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Masterblock Concrete blocks - technical manual

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Masterblock Concrete blocks - technical manual

Contents02

0304_Block co-ordination and setting out

05_Cleaning and maintenance (commodity blockwork)

0608_Health and safety

0910_Mortars

1113_Fire resistance

1418_U-value summary tables

1922_Thermal 2010

2324_Precast concrete products

2528_Structural stability of non loading-bearing panels

29_Normalised strengths when designing to eurocode 6

3033_Movement control

3436_Plastering rendering and jointing

03 Block co-ordination and setting out

Ideally buildings should be set out in block co-ordination ( unit size + mortar joint ) to provide the best aesthetics and reduced costs due to minimising the amount of cut units onsite Setting out the building will include the position and size of the openings within the length and height of the wall The following diagrams and tables gives advice regarding the setting out and use of masonry units

Block module tolerances Co-ordinated dimensions

Aggregate Industries manufactures to BS EN 771-3 The co-ordinated dimension (CO) is the nominal block size + tolerance category D1 as follows the mortar joint typically 10mm

Length +3mm - 5mm Co-ordinated size (CO)

Width +3mm - 5mm ie block panels with opposite return ends or quoin

Height +3mm -5mm return end (external to internal corner)

Bradstone walling range is manufactured to BS EN 771-5 tolerance category D3

CO

Co-ordinated size plus a joint (CO+) ie door an window openings

CO+

CO+

return end (internal to internal corner)

Co-ordinated size minus a joint (CO-) ie block piers or panels between openings

CO-

opening panel between openingRadial walls

eP CO-

Curve using full-length blocks

Curve using half-length blocks

Oh

04 Block co-ordination and setting out

Overhang and perpend joint width for radius walls

The table (below) gives the relevant overhang and increased perpend joint size dependant upon wall radius and block thickness For Fairfaced work overhangs of 2mm and below are acceptable with the exception of polished blockwork where ideally no overhang should be present

Where the blockwork is being plasteredrendered or plasterboard on dabs is being used a maximum of 6mm overhang is recommended

Face size 440 x 215mm Face size 215 x 215mm

Block thickness (mm) 94 100 140 94 100 140

Wall radius (mm) Oh eP Oh eP Oh eP Oh eP Oh eP Oh eP 600 44 81 44 86 44 120 10 45 10 50 10 68 800 32 63 32 68 32 93 8 36 8 40 8 53 1000 25 52 25 56 25 76 6 31 6 34 6 44 1200 21 45 21 48 21 65 5 28 5 29 5 29 1400 18 40 18 43 18 57 4 25 4 27 4 34 1600 16 36 16 39 16 51 4 23 4 24 4 31 1800 14 33 14 36 14 46 3 22 3 23 3 28 2000 12 31 12 33 12 42 3 21 3 22 3 26 2500 10 27 10 28 10 36 2 18 2 19 2 23 3000 8 24 8 25 8 31 2 17 2 18 2 21 3500 7 22 7 23 7 28 2 16 2 17 2 19 4000 6 21 6 21 6 26 1 15 1 16 1 18 4500 5 19 5 20 5 24 1 15 1 15 1 17 5000 5 18 5 19 5 23 1 14 1 15 1 16 6000 4 17 4 18 4 21 1 14 1 14 1 15 7000 4 16 4 17 4 19 08 13 08 13 08 15 8000 3 15 3 15 3 18 07 13 07 13 07 14 9000 3 15 3 15 3 17 06 12 06 12 06 14 10000 2 14 2 15 2 16 06 12 06 12 06 13

Masonry bonds

The horizontal distance between cross jointsperpends in successive masonry courses should normally be not less than one-quarter of the length of the masonry unit but in no case less than 50mm for brick size units or 75mm for block size unitsUnless specified to the contrary units should be laid half lap stretcher bond with a nominal 10mm joint

Permissible deviations in built blockwork

The table (right) is based upon guidance given in BS 8000 pt 3 Code of practice for masonry

NOTE 1 These deviations are generally derived from BS 56061990 and

represent the level which can be reasonably expected for general brick and

block masonry

NOTE 2 These deviations should be measured in accordance with the methods

described in BS 56061990 Annex D

Height of lifts

No leaf or raked back corner should be higher that 12m above the general blockwork level Except where permitted by a proprietary system do not carry up any leaf higher than 15m in any day Where dense low absorption units are concerned this lift height per day may have to be reduced to less than 12m

Table Permissible deviations in masonry (other than stone masonry)

Dimensions Permissible deviation (mm)

Position in plan of any point or face in relation to the specified building reference line andor point at the small level

plusmn10

Straightness in any 5mm length plusmn5 Verticality up to 3m height plusmn10 Verticality up to 7m height plusmn14 Overall thickness of walls plusmn10 Level of bed joints up to 5m for brick masonry plusmn11 Level of bed joints up to 5m for block masonry plusmn13

05 Cleaning and maintenance (commodity blockwork)

Facing Masonry units and cast stone are intended to be maintenance free However the environment that the blocks are subjected to will influence whether or not the blockwork at some point in time requires cleaning

Under no circumstances do we recommend the use of pressure washes however in some circumstances such as paint spills or graffiti a high pressure steam cleaner may be used We would normally recommend the following treatments

Cleaning of blockwork is no substitute for maintenance of high standards of site work practice such as careful block handling and laying use of mortar and adequate protection of the finished work Prevention is better than cure

The cleaning of blockwork using cleaning agents inevitably requires a reasonable element of skill and should be carried out on a trial area first under supervision Appropriate PPE equipment (gloves and goggles) must be worn Cleaning the face of the material may need more than one application This will depend on the extent of the problem the deposits and the texture or profile of the block involved

All the following cleaning methods should be carried out on an inconspicuous area first to establish suitability and the effect of the process

Fair faced blocks

1 Mortar and Plaster lsquoSnotsrsquo

Where there is a build up of dry set mortar it should be removed by placing the edge of a block of wood next to it and tapping the block sideways to lift the mortar off the face

2 Mortar and Plaster Smears

Where dried mortar smears or stains occur the residue can be cleaned by use of a cleaning agent Generally those used contain Hydrochloric Acid The cleaning agent should never be used undiluted and needs to be diluted in accordance with the manufacturers recommendations

Using acid cleaners can affect the colour and texture of the block and it may require the whole wall treating to give a uniform appearance

Using a bristle brush or mist sprayer the spot or smear should be dampened with water then apply the dilute cleaner The mortar will be seen to dissolve and when judged to be clean the area must be flushed with clean water again using a brush or mist sprayer

Where wall surfaces have multiple smears and mortar deposits over the whole face of the wall initially treat any particularly heavy deposits as described above Subsequently dampen the area and apply the cleaning agent over the whole face using a mist sprayer and then thoroughly flushing down the face with clean water

Provided these recommendations are followed mortar joints will be no more affected than the surface of the blockwork always provided a cement lime sand mortar has been used If a plasticiser has been incorporated in the mortar mix a check should be made on the constituents for salt content as cleaning agents can be detrimental to some plasticisers

NOTE Hydrochloric Acid based cleaners can attack other surfaces such as

galvanised steel and care should therefore be taken in their application

3 Paint

It is essential that the type of paint and its solvent is identified - this is likely to be water benzene turpentine (pure) acetone or similar thinners The solvent is applied to the affected area whether splashes or drips using an appropriate sized brush it should be left for a little time to soften the paint When softened the area being cleaned is lsquomoppedrsquo with the moist brush used for application of the solvent the brush being squeezed after each mopping to clean it When most of the paint is cleaned from the surface of the blockwork it must be allowed to dry When dry a further application of the cleaning agent in accordance with point 2 above may be necessary finally to clean the blockwork Alternatively proprietary paint removers such as Polycell Advanced paint stripperLess Mess paint strippercan be used This gel can remove most paint types however the gel may have to be left in place for up to 6 hours

NOTE It is recommended that the paint manufacturer is contacted to advise on

the most suitable solvent to use or alternatively specialist graffiti removal

company can be used to carry out any work required

4 Oil grease bitumen and tar based materials

Solvents must be identified These may be Benzole Tetrachloroethylene lsquoDabit Offrsquo or lsquoGunkrsquo de-greasant The technique is the same as for the paint but a trial and error approach may be necessary depending on the extent of the contamination

5 Finger-marks

Apply a mist spray of clean water followed by judicious use of household detergent and a nail brush Finally mist spray again with clean water and allow to dry Repeat as necessary

06 Health and safety

Handling Building Blocks

This guidance by the Construction Industry Advisory Committee (CONIAC) covers the safe handling of building blocks by which the committee means all masonry units and blocks including those made of clay concrete reconstituted stone or any similar man-made or natural material

Handling of heavy building blocks can give rise to a wide range of injuries including serious injuries where the damage is gradual and progressive over a substantial period of time

To reduce the risk of injury the blockwork design site conditions and the way in which the work is organised should be properly planned Practical advice on these matters should help designers specifiers and those managing work on site as well as those handling the blocks

Risk Assessment

1 To minimise the risk of injury

bull All hazards involved need to be identified

bull The significant risks estimated and

bull Suitable precautions to avoid or reduce these risks incorporated into safe systems of work

2 The main hazards are

bull Heavy loads and poor posture excessive stress and strain causing injury to muscles and tendons particularly where handling involves bending twisting or other difficult postures

bull Slips trips and falls including damage caused by lsquodropped blocksrsquo

bull Sharp edges cuts and abrasions to the skin

bull Skin hazards dermatitis burns and similar conditions caused by contact with mortar (see HSE construction information sheet No 26 Cement)

3 With block handling the risk of injury is largely determined by the weight of the block - the heavier the block the higher the risk of injury

4 After taking account of expert opinion and the long history of complaints over handling heavy blocks CONIAC has concluded that there is a high risk of injury in the single-handed repetitive manual handling of blocks heavier than 20kg (44 lbs)

5 If single person handling is needed either blocks of 20kg or lighter should be specified and used or as a last resort where special units are necessary over 20kg such as quion blocks the laying rate should reduced to less than 15 unitshour and restricted to a maximum of 2 hoursday

The work area should be organised to restrict the amount of bending and stretching especially below knee high and above shoulder height

6 With blocks weighing less than 20kg Manual handling risks are still significant and suitable precautions should be taken to minimise these risks as much as possible

Precautions

Designers and specifiers should take the weight guideline into account at the design and specification stage of the project

Where special units such as pad stones quoins are required that are over 20 kg measures to provide intermediate staging should be specified to ensure bending and stretching is minimised

Project planners and contractors should follow the weight guidelines and ensure that the precautions listed opposite are taken into account when planning the work and when devising safe systems of work

Contractors should also give instruction and exercise supervision to ensure that workers follow these plans and systems of work

The Task

Handle and lay building blocks in accordance with the following

bull Plan to stack blocks close to where they will be used

bull Stack on a level firm base and wherever possible without double stacking of block packs

bull Keep manhandling of blocks to a minimum and use mechanical lifting and handling aids as much as possible such as cranes fork-lift trucks with pallets trolleys and telescopic handlers

NOTE ensure that the landing area of scaffolding is adequate for the temporary

loading of blocks

bull Always use mechanical lifting and handling or operate a two person system for blocks weighting more than 20kg

bull Arrange work to avoid over-reaching or twisting when handling blocks

bull Ensure good grip and secure foot placement in the working area when handling blocks

Arrange the work so that blocks only need to be handled up to shoulder height Go higher by using staging for instance

NOTE further protection against falls may be necessary if the effective height of

guard rails is reduced) Particular care and attention is needed for higher risk

block laying such as when head room is restricted under soffits or below

working platform level

07 Health and safety

The Working Environment

Prepare roads and hard standing first and before blocks are on site In areas where blocks are carried or handled keep the site clear of obstacles or tripping hazards such as discarded block wrappings or stack ties Uneven slippery or unstable ground conditions increase the risk of injury Blocks should be protected from the weather to avoid them getting wet and increasing in weight

Training

Workers should be given information and training on the systems of work and procedures to be used on that site to ensure safe manual handling of blocks Suitable training will also be necessary for designers specifiers and those managing contracts

Personal Protective Equipment

When handling blocks the normal protective equipment needed for use on building sites should be provided by employers and worn by individual workers in particular safety helmets safety footwear with protective toe caps and suitable gloves

Wall Ties

Serious injuries have occurred during blockwork when building double skin walls due to contact with the sharp ends and edges of some types of wall ties The exposed sharp edges should be covered or safer wall ties used

References and Reading List

Manual Handling Guidance L23 HMSO 1992 ISBN 0 11 886335 5

BS EN 1996 Design of Masonry Structures

BS 5628 1985 Code of Practice for use of masonry BSI

Contemporary Ergonomics 1989 Block laying in the construction industry Tracy M F and Gray M I

Proceedings of the Ergonomics Societyrsquos 1989 Annual Conference Ergonomics - designing progress E D Taylor and Francis 1989 ISBN 085 066 484

Safe handling and use of concrete blocks

Consideration of the points listed below will contribute significantly to safe working and manual handling

bull Minimise manual handling by delivering units as close to the place of use as safety considerations permit

bull Move units in packs and by mechanical means whenever possible

bull Load units out to above knee height

Reduce unit weight by 25 or reduce repetition by 25

Reduce unit weight by 25 or reduce repetition by 25

20kg maximum weight based upon repetition rate of 20 unitshour

The above diagram gives the typical repetitive weight limits for the laying of masonry

units based upon good site practice with adequate clean dry working areas

Special units above 20kg can be used however their use will be subject to a

specific risk assessment

bull Ensure that normal protective equipment appropriate to construction sites is both provided and used

bull Ensure that appropriate eye protection and dust suppression or extraction measures are provided when mechanically cutting or chasing units

Additional considerations include

bull Manual Handling Operations Regulations requires employers to carry out a risk assessment on all manual handling tasks

bull The Construction (Design and Management) Regulations places duties in the form of a mandatory Health and Safety system on clientsdesignerscontractors

In an attempt to provide practical guidance for meeting the requirements of these two regulations the Health and Safety Executive (HSE) has issued Construction Sheet 37 lsquoHandling Building Blocksrsquo which advises that

bull There is a risk of injury in the singlehanded repetitive manual handling of blocks heavier than 20kg

The HSE guidance does not prevent an individual handling manually small numbers of units of greater than 20kg In particular ancillary units such as quoins or reveals would fall into this category and would not be expected to be handled by a two person team

08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

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Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

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Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

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Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

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Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

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Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

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Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

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Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

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Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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Contents02

0304_Block co-ordination and setting out

05_Cleaning and maintenance (commodity blockwork)

0608_Health and safety

0910_Mortars

1113_Fire resistance

1418_U-value summary tables

1922_Thermal 2010

2324_Precast concrete products

2528_Structural stability of non loading-bearing panels

29_Normalised strengths when designing to eurocode 6

3033_Movement control

3436_Plastering rendering and jointing

03 Block co-ordination and setting out

Ideally buildings should be set out in block co-ordination ( unit size + mortar joint ) to provide the best aesthetics and reduced costs due to minimising the amount of cut units onsite Setting out the building will include the position and size of the openings within the length and height of the wall The following diagrams and tables gives advice regarding the setting out and use of masonry units

Block module tolerances Co-ordinated dimensions

Aggregate Industries manufactures to BS EN 771-3 The co-ordinated dimension (CO) is the nominal block size + tolerance category D1 as follows the mortar joint typically 10mm

Length +3mm - 5mm Co-ordinated size (CO)

Width +3mm - 5mm ie block panels with opposite return ends or quoin

Height +3mm -5mm return end (external to internal corner)

Bradstone walling range is manufactured to BS EN 771-5 tolerance category D3

CO

Co-ordinated size plus a joint (CO+) ie door an window openings

CO+

CO+

return end (internal to internal corner)

Co-ordinated size minus a joint (CO-) ie block piers or panels between openings

CO-

opening panel between openingRadial walls

eP CO-

Curve using full-length blocks

Curve using half-length blocks

Oh

04 Block co-ordination and setting out

Overhang and perpend joint width for radius walls

The table (below) gives the relevant overhang and increased perpend joint size dependant upon wall radius and block thickness For Fairfaced work overhangs of 2mm and below are acceptable with the exception of polished blockwork where ideally no overhang should be present

Where the blockwork is being plasteredrendered or plasterboard on dabs is being used a maximum of 6mm overhang is recommended

Face size 440 x 215mm Face size 215 x 215mm

Block thickness (mm) 94 100 140 94 100 140

Wall radius (mm) Oh eP Oh eP Oh eP Oh eP Oh eP Oh eP 600 44 81 44 86 44 120 10 45 10 50 10 68 800 32 63 32 68 32 93 8 36 8 40 8 53 1000 25 52 25 56 25 76 6 31 6 34 6 44 1200 21 45 21 48 21 65 5 28 5 29 5 29 1400 18 40 18 43 18 57 4 25 4 27 4 34 1600 16 36 16 39 16 51 4 23 4 24 4 31 1800 14 33 14 36 14 46 3 22 3 23 3 28 2000 12 31 12 33 12 42 3 21 3 22 3 26 2500 10 27 10 28 10 36 2 18 2 19 2 23 3000 8 24 8 25 8 31 2 17 2 18 2 21 3500 7 22 7 23 7 28 2 16 2 17 2 19 4000 6 21 6 21 6 26 1 15 1 16 1 18 4500 5 19 5 20 5 24 1 15 1 15 1 17 5000 5 18 5 19 5 23 1 14 1 15 1 16 6000 4 17 4 18 4 21 1 14 1 14 1 15 7000 4 16 4 17 4 19 08 13 08 13 08 15 8000 3 15 3 15 3 18 07 13 07 13 07 14 9000 3 15 3 15 3 17 06 12 06 12 06 14 10000 2 14 2 15 2 16 06 12 06 12 06 13

Masonry bonds

The horizontal distance between cross jointsperpends in successive masonry courses should normally be not less than one-quarter of the length of the masonry unit but in no case less than 50mm for brick size units or 75mm for block size unitsUnless specified to the contrary units should be laid half lap stretcher bond with a nominal 10mm joint

Permissible deviations in built blockwork

The table (right) is based upon guidance given in BS 8000 pt 3 Code of practice for masonry

NOTE 1 These deviations are generally derived from BS 56061990 and

represent the level which can be reasonably expected for general brick and

block masonry

NOTE 2 These deviations should be measured in accordance with the methods

described in BS 56061990 Annex D

Height of lifts

No leaf or raked back corner should be higher that 12m above the general blockwork level Except where permitted by a proprietary system do not carry up any leaf higher than 15m in any day Where dense low absorption units are concerned this lift height per day may have to be reduced to less than 12m

Table Permissible deviations in masonry (other than stone masonry)

Dimensions Permissible deviation (mm)

Position in plan of any point or face in relation to the specified building reference line andor point at the small level

plusmn10

Straightness in any 5mm length plusmn5 Verticality up to 3m height plusmn10 Verticality up to 7m height plusmn14 Overall thickness of walls plusmn10 Level of bed joints up to 5m for brick masonry plusmn11 Level of bed joints up to 5m for block masonry plusmn13

05 Cleaning and maintenance (commodity blockwork)

Facing Masonry units and cast stone are intended to be maintenance free However the environment that the blocks are subjected to will influence whether or not the blockwork at some point in time requires cleaning

Under no circumstances do we recommend the use of pressure washes however in some circumstances such as paint spills or graffiti a high pressure steam cleaner may be used We would normally recommend the following treatments

Cleaning of blockwork is no substitute for maintenance of high standards of site work practice such as careful block handling and laying use of mortar and adequate protection of the finished work Prevention is better than cure

The cleaning of blockwork using cleaning agents inevitably requires a reasonable element of skill and should be carried out on a trial area first under supervision Appropriate PPE equipment (gloves and goggles) must be worn Cleaning the face of the material may need more than one application This will depend on the extent of the problem the deposits and the texture or profile of the block involved

All the following cleaning methods should be carried out on an inconspicuous area first to establish suitability and the effect of the process

Fair faced blocks

1 Mortar and Plaster lsquoSnotsrsquo

Where there is a build up of dry set mortar it should be removed by placing the edge of a block of wood next to it and tapping the block sideways to lift the mortar off the face

2 Mortar and Plaster Smears

Where dried mortar smears or stains occur the residue can be cleaned by use of a cleaning agent Generally those used contain Hydrochloric Acid The cleaning agent should never be used undiluted and needs to be diluted in accordance with the manufacturers recommendations

Using acid cleaners can affect the colour and texture of the block and it may require the whole wall treating to give a uniform appearance

Using a bristle brush or mist sprayer the spot or smear should be dampened with water then apply the dilute cleaner The mortar will be seen to dissolve and when judged to be clean the area must be flushed with clean water again using a brush or mist sprayer

Where wall surfaces have multiple smears and mortar deposits over the whole face of the wall initially treat any particularly heavy deposits as described above Subsequently dampen the area and apply the cleaning agent over the whole face using a mist sprayer and then thoroughly flushing down the face with clean water

Provided these recommendations are followed mortar joints will be no more affected than the surface of the blockwork always provided a cement lime sand mortar has been used If a plasticiser has been incorporated in the mortar mix a check should be made on the constituents for salt content as cleaning agents can be detrimental to some plasticisers

NOTE Hydrochloric Acid based cleaners can attack other surfaces such as

galvanised steel and care should therefore be taken in their application

3 Paint

It is essential that the type of paint and its solvent is identified - this is likely to be water benzene turpentine (pure) acetone or similar thinners The solvent is applied to the affected area whether splashes or drips using an appropriate sized brush it should be left for a little time to soften the paint When softened the area being cleaned is lsquomoppedrsquo with the moist brush used for application of the solvent the brush being squeezed after each mopping to clean it When most of the paint is cleaned from the surface of the blockwork it must be allowed to dry When dry a further application of the cleaning agent in accordance with point 2 above may be necessary finally to clean the blockwork Alternatively proprietary paint removers such as Polycell Advanced paint stripperLess Mess paint strippercan be used This gel can remove most paint types however the gel may have to be left in place for up to 6 hours

NOTE It is recommended that the paint manufacturer is contacted to advise on

the most suitable solvent to use or alternatively specialist graffiti removal

company can be used to carry out any work required

4 Oil grease bitumen and tar based materials

Solvents must be identified These may be Benzole Tetrachloroethylene lsquoDabit Offrsquo or lsquoGunkrsquo de-greasant The technique is the same as for the paint but a trial and error approach may be necessary depending on the extent of the contamination

5 Finger-marks

Apply a mist spray of clean water followed by judicious use of household detergent and a nail brush Finally mist spray again with clean water and allow to dry Repeat as necessary

06 Health and safety

Handling Building Blocks

This guidance by the Construction Industry Advisory Committee (CONIAC) covers the safe handling of building blocks by which the committee means all masonry units and blocks including those made of clay concrete reconstituted stone or any similar man-made or natural material

Handling of heavy building blocks can give rise to a wide range of injuries including serious injuries where the damage is gradual and progressive over a substantial period of time

To reduce the risk of injury the blockwork design site conditions and the way in which the work is organised should be properly planned Practical advice on these matters should help designers specifiers and those managing work on site as well as those handling the blocks

Risk Assessment

1 To minimise the risk of injury

bull All hazards involved need to be identified

bull The significant risks estimated and

bull Suitable precautions to avoid or reduce these risks incorporated into safe systems of work

2 The main hazards are

bull Heavy loads and poor posture excessive stress and strain causing injury to muscles and tendons particularly where handling involves bending twisting or other difficult postures

bull Slips trips and falls including damage caused by lsquodropped blocksrsquo

bull Sharp edges cuts and abrasions to the skin

bull Skin hazards dermatitis burns and similar conditions caused by contact with mortar (see HSE construction information sheet No 26 Cement)

3 With block handling the risk of injury is largely determined by the weight of the block - the heavier the block the higher the risk of injury

4 After taking account of expert opinion and the long history of complaints over handling heavy blocks CONIAC has concluded that there is a high risk of injury in the single-handed repetitive manual handling of blocks heavier than 20kg (44 lbs)

5 If single person handling is needed either blocks of 20kg or lighter should be specified and used or as a last resort where special units are necessary over 20kg such as quion blocks the laying rate should reduced to less than 15 unitshour and restricted to a maximum of 2 hoursday

The work area should be organised to restrict the amount of bending and stretching especially below knee high and above shoulder height

6 With blocks weighing less than 20kg Manual handling risks are still significant and suitable precautions should be taken to minimise these risks as much as possible

Precautions

Designers and specifiers should take the weight guideline into account at the design and specification stage of the project

Where special units such as pad stones quoins are required that are over 20 kg measures to provide intermediate staging should be specified to ensure bending and stretching is minimised

Project planners and contractors should follow the weight guidelines and ensure that the precautions listed opposite are taken into account when planning the work and when devising safe systems of work

Contractors should also give instruction and exercise supervision to ensure that workers follow these plans and systems of work

The Task

Handle and lay building blocks in accordance with the following

bull Plan to stack blocks close to where they will be used

bull Stack on a level firm base and wherever possible without double stacking of block packs

bull Keep manhandling of blocks to a minimum and use mechanical lifting and handling aids as much as possible such as cranes fork-lift trucks with pallets trolleys and telescopic handlers

NOTE ensure that the landing area of scaffolding is adequate for the temporary

loading of blocks

bull Always use mechanical lifting and handling or operate a two person system for blocks weighting more than 20kg

bull Arrange work to avoid over-reaching or twisting when handling blocks

bull Ensure good grip and secure foot placement in the working area when handling blocks

Arrange the work so that blocks only need to be handled up to shoulder height Go higher by using staging for instance

NOTE further protection against falls may be necessary if the effective height of

guard rails is reduced) Particular care and attention is needed for higher risk

block laying such as when head room is restricted under soffits or below

working platform level

07 Health and safety

The Working Environment

Prepare roads and hard standing first and before blocks are on site In areas where blocks are carried or handled keep the site clear of obstacles or tripping hazards such as discarded block wrappings or stack ties Uneven slippery or unstable ground conditions increase the risk of injury Blocks should be protected from the weather to avoid them getting wet and increasing in weight

Training

Workers should be given information and training on the systems of work and procedures to be used on that site to ensure safe manual handling of blocks Suitable training will also be necessary for designers specifiers and those managing contracts

Personal Protective Equipment

When handling blocks the normal protective equipment needed for use on building sites should be provided by employers and worn by individual workers in particular safety helmets safety footwear with protective toe caps and suitable gloves

Wall Ties

Serious injuries have occurred during blockwork when building double skin walls due to contact with the sharp ends and edges of some types of wall ties The exposed sharp edges should be covered or safer wall ties used

References and Reading List

Manual Handling Guidance L23 HMSO 1992 ISBN 0 11 886335 5

BS EN 1996 Design of Masonry Structures

BS 5628 1985 Code of Practice for use of masonry BSI

Contemporary Ergonomics 1989 Block laying in the construction industry Tracy M F and Gray M I

Proceedings of the Ergonomics Societyrsquos 1989 Annual Conference Ergonomics - designing progress E D Taylor and Francis 1989 ISBN 085 066 484

Safe handling and use of concrete blocks

Consideration of the points listed below will contribute significantly to safe working and manual handling

bull Minimise manual handling by delivering units as close to the place of use as safety considerations permit

bull Move units in packs and by mechanical means whenever possible

bull Load units out to above knee height

Reduce unit weight by 25 or reduce repetition by 25

Reduce unit weight by 25 or reduce repetition by 25

20kg maximum weight based upon repetition rate of 20 unitshour

The above diagram gives the typical repetitive weight limits for the laying of masonry

units based upon good site practice with adequate clean dry working areas

Special units above 20kg can be used however their use will be subject to a

specific risk assessment

bull Ensure that normal protective equipment appropriate to construction sites is both provided and used

bull Ensure that appropriate eye protection and dust suppression or extraction measures are provided when mechanically cutting or chasing units

Additional considerations include

bull Manual Handling Operations Regulations requires employers to carry out a risk assessment on all manual handling tasks

bull The Construction (Design and Management) Regulations places duties in the form of a mandatory Health and Safety system on clientsdesignerscontractors

In an attempt to provide practical guidance for meeting the requirements of these two regulations the Health and Safety Executive (HSE) has issued Construction Sheet 37 lsquoHandling Building Blocksrsquo which advises that

bull There is a risk of injury in the singlehanded repetitive manual handling of blocks heavier than 20kg

The HSE guidance does not prevent an individual handling manually small numbers of units of greater than 20kg In particular ancillary units such as quoins or reveals would fall into this category and would not be expected to be handled by a two person team

08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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03 Block co-ordination and setting out

Ideally buildings should be set out in block co-ordination ( unit size + mortar joint ) to provide the best aesthetics and reduced costs due to minimising the amount of cut units onsite Setting out the building will include the position and size of the openings within the length and height of the wall The following diagrams and tables gives advice regarding the setting out and use of masonry units

Block module tolerances Co-ordinated dimensions

Aggregate Industries manufactures to BS EN 771-3 The co-ordinated dimension (CO) is the nominal block size + tolerance category D1 as follows the mortar joint typically 10mm

Length +3mm - 5mm Co-ordinated size (CO)

Width +3mm - 5mm ie block panels with opposite return ends or quoin

Height +3mm -5mm return end (external to internal corner)

Bradstone walling range is manufactured to BS EN 771-5 tolerance category D3

CO

Co-ordinated size plus a joint (CO+) ie door an window openings

CO+

CO+

return end (internal to internal corner)

Co-ordinated size minus a joint (CO-) ie block piers or panels between openings

CO-

opening panel between openingRadial walls

eP CO-

Curve using full-length blocks

Curve using half-length blocks

Oh

04 Block co-ordination and setting out

Overhang and perpend joint width for radius walls

The table (below) gives the relevant overhang and increased perpend joint size dependant upon wall radius and block thickness For Fairfaced work overhangs of 2mm and below are acceptable with the exception of polished blockwork where ideally no overhang should be present

Where the blockwork is being plasteredrendered or plasterboard on dabs is being used a maximum of 6mm overhang is recommended

Face size 440 x 215mm Face size 215 x 215mm

Block thickness (mm) 94 100 140 94 100 140

Wall radius (mm) Oh eP Oh eP Oh eP Oh eP Oh eP Oh eP 600 44 81 44 86 44 120 10 45 10 50 10 68 800 32 63 32 68 32 93 8 36 8 40 8 53 1000 25 52 25 56 25 76 6 31 6 34 6 44 1200 21 45 21 48 21 65 5 28 5 29 5 29 1400 18 40 18 43 18 57 4 25 4 27 4 34 1600 16 36 16 39 16 51 4 23 4 24 4 31 1800 14 33 14 36 14 46 3 22 3 23 3 28 2000 12 31 12 33 12 42 3 21 3 22 3 26 2500 10 27 10 28 10 36 2 18 2 19 2 23 3000 8 24 8 25 8 31 2 17 2 18 2 21 3500 7 22 7 23 7 28 2 16 2 17 2 19 4000 6 21 6 21 6 26 1 15 1 16 1 18 4500 5 19 5 20 5 24 1 15 1 15 1 17 5000 5 18 5 19 5 23 1 14 1 15 1 16 6000 4 17 4 18 4 21 1 14 1 14 1 15 7000 4 16 4 17 4 19 08 13 08 13 08 15 8000 3 15 3 15 3 18 07 13 07 13 07 14 9000 3 15 3 15 3 17 06 12 06 12 06 14 10000 2 14 2 15 2 16 06 12 06 12 06 13

Masonry bonds

The horizontal distance between cross jointsperpends in successive masonry courses should normally be not less than one-quarter of the length of the masonry unit but in no case less than 50mm for brick size units or 75mm for block size unitsUnless specified to the contrary units should be laid half lap stretcher bond with a nominal 10mm joint

Permissible deviations in built blockwork

The table (right) is based upon guidance given in BS 8000 pt 3 Code of practice for masonry

NOTE 1 These deviations are generally derived from BS 56061990 and

represent the level which can be reasonably expected for general brick and

block masonry

NOTE 2 These deviations should be measured in accordance with the methods

described in BS 56061990 Annex D

Height of lifts

No leaf or raked back corner should be higher that 12m above the general blockwork level Except where permitted by a proprietary system do not carry up any leaf higher than 15m in any day Where dense low absorption units are concerned this lift height per day may have to be reduced to less than 12m

Table Permissible deviations in masonry (other than stone masonry)

Dimensions Permissible deviation (mm)

Position in plan of any point or face in relation to the specified building reference line andor point at the small level

plusmn10

Straightness in any 5mm length plusmn5 Verticality up to 3m height plusmn10 Verticality up to 7m height plusmn14 Overall thickness of walls plusmn10 Level of bed joints up to 5m for brick masonry plusmn11 Level of bed joints up to 5m for block masonry plusmn13

05 Cleaning and maintenance (commodity blockwork)

Facing Masonry units and cast stone are intended to be maintenance free However the environment that the blocks are subjected to will influence whether or not the blockwork at some point in time requires cleaning

Under no circumstances do we recommend the use of pressure washes however in some circumstances such as paint spills or graffiti a high pressure steam cleaner may be used We would normally recommend the following treatments

Cleaning of blockwork is no substitute for maintenance of high standards of site work practice such as careful block handling and laying use of mortar and adequate protection of the finished work Prevention is better than cure

The cleaning of blockwork using cleaning agents inevitably requires a reasonable element of skill and should be carried out on a trial area first under supervision Appropriate PPE equipment (gloves and goggles) must be worn Cleaning the face of the material may need more than one application This will depend on the extent of the problem the deposits and the texture or profile of the block involved

All the following cleaning methods should be carried out on an inconspicuous area first to establish suitability and the effect of the process

Fair faced blocks

1 Mortar and Plaster lsquoSnotsrsquo

Where there is a build up of dry set mortar it should be removed by placing the edge of a block of wood next to it and tapping the block sideways to lift the mortar off the face

2 Mortar and Plaster Smears

Where dried mortar smears or stains occur the residue can be cleaned by use of a cleaning agent Generally those used contain Hydrochloric Acid The cleaning agent should never be used undiluted and needs to be diluted in accordance with the manufacturers recommendations

Using acid cleaners can affect the colour and texture of the block and it may require the whole wall treating to give a uniform appearance

Using a bristle brush or mist sprayer the spot or smear should be dampened with water then apply the dilute cleaner The mortar will be seen to dissolve and when judged to be clean the area must be flushed with clean water again using a brush or mist sprayer

Where wall surfaces have multiple smears and mortar deposits over the whole face of the wall initially treat any particularly heavy deposits as described above Subsequently dampen the area and apply the cleaning agent over the whole face using a mist sprayer and then thoroughly flushing down the face with clean water

Provided these recommendations are followed mortar joints will be no more affected than the surface of the blockwork always provided a cement lime sand mortar has been used If a plasticiser has been incorporated in the mortar mix a check should be made on the constituents for salt content as cleaning agents can be detrimental to some plasticisers

NOTE Hydrochloric Acid based cleaners can attack other surfaces such as

galvanised steel and care should therefore be taken in their application

3 Paint

It is essential that the type of paint and its solvent is identified - this is likely to be water benzene turpentine (pure) acetone or similar thinners The solvent is applied to the affected area whether splashes or drips using an appropriate sized brush it should be left for a little time to soften the paint When softened the area being cleaned is lsquomoppedrsquo with the moist brush used for application of the solvent the brush being squeezed after each mopping to clean it When most of the paint is cleaned from the surface of the blockwork it must be allowed to dry When dry a further application of the cleaning agent in accordance with point 2 above may be necessary finally to clean the blockwork Alternatively proprietary paint removers such as Polycell Advanced paint stripperLess Mess paint strippercan be used This gel can remove most paint types however the gel may have to be left in place for up to 6 hours

NOTE It is recommended that the paint manufacturer is contacted to advise on

the most suitable solvent to use or alternatively specialist graffiti removal

company can be used to carry out any work required

4 Oil grease bitumen and tar based materials

Solvents must be identified These may be Benzole Tetrachloroethylene lsquoDabit Offrsquo or lsquoGunkrsquo de-greasant The technique is the same as for the paint but a trial and error approach may be necessary depending on the extent of the contamination

5 Finger-marks

Apply a mist spray of clean water followed by judicious use of household detergent and a nail brush Finally mist spray again with clean water and allow to dry Repeat as necessary

06 Health and safety

Handling Building Blocks

This guidance by the Construction Industry Advisory Committee (CONIAC) covers the safe handling of building blocks by which the committee means all masonry units and blocks including those made of clay concrete reconstituted stone or any similar man-made or natural material

Handling of heavy building blocks can give rise to a wide range of injuries including serious injuries where the damage is gradual and progressive over a substantial period of time

To reduce the risk of injury the blockwork design site conditions and the way in which the work is organised should be properly planned Practical advice on these matters should help designers specifiers and those managing work on site as well as those handling the blocks

Risk Assessment

1 To minimise the risk of injury

bull All hazards involved need to be identified

bull The significant risks estimated and

bull Suitable precautions to avoid or reduce these risks incorporated into safe systems of work

2 The main hazards are

bull Heavy loads and poor posture excessive stress and strain causing injury to muscles and tendons particularly where handling involves bending twisting or other difficult postures

bull Slips trips and falls including damage caused by lsquodropped blocksrsquo

bull Sharp edges cuts and abrasions to the skin

bull Skin hazards dermatitis burns and similar conditions caused by contact with mortar (see HSE construction information sheet No 26 Cement)

3 With block handling the risk of injury is largely determined by the weight of the block - the heavier the block the higher the risk of injury

4 After taking account of expert opinion and the long history of complaints over handling heavy blocks CONIAC has concluded that there is a high risk of injury in the single-handed repetitive manual handling of blocks heavier than 20kg (44 lbs)

5 If single person handling is needed either blocks of 20kg or lighter should be specified and used or as a last resort where special units are necessary over 20kg such as quion blocks the laying rate should reduced to less than 15 unitshour and restricted to a maximum of 2 hoursday

The work area should be organised to restrict the amount of bending and stretching especially below knee high and above shoulder height

6 With blocks weighing less than 20kg Manual handling risks are still significant and suitable precautions should be taken to minimise these risks as much as possible

Precautions

Designers and specifiers should take the weight guideline into account at the design and specification stage of the project

Where special units such as pad stones quoins are required that are over 20 kg measures to provide intermediate staging should be specified to ensure bending and stretching is minimised

Project planners and contractors should follow the weight guidelines and ensure that the precautions listed opposite are taken into account when planning the work and when devising safe systems of work

Contractors should also give instruction and exercise supervision to ensure that workers follow these plans and systems of work

The Task

Handle and lay building blocks in accordance with the following

bull Plan to stack blocks close to where they will be used

bull Stack on a level firm base and wherever possible without double stacking of block packs

bull Keep manhandling of blocks to a minimum and use mechanical lifting and handling aids as much as possible such as cranes fork-lift trucks with pallets trolleys and telescopic handlers

NOTE ensure that the landing area of scaffolding is adequate for the temporary

loading of blocks

bull Always use mechanical lifting and handling or operate a two person system for blocks weighting more than 20kg

bull Arrange work to avoid over-reaching or twisting when handling blocks

bull Ensure good grip and secure foot placement in the working area when handling blocks

Arrange the work so that blocks only need to be handled up to shoulder height Go higher by using staging for instance

NOTE further protection against falls may be necessary if the effective height of

guard rails is reduced) Particular care and attention is needed for higher risk

block laying such as when head room is restricted under soffits or below

working platform level

07 Health and safety

The Working Environment

Prepare roads and hard standing first and before blocks are on site In areas where blocks are carried or handled keep the site clear of obstacles or tripping hazards such as discarded block wrappings or stack ties Uneven slippery or unstable ground conditions increase the risk of injury Blocks should be protected from the weather to avoid them getting wet and increasing in weight

Training

Workers should be given information and training on the systems of work and procedures to be used on that site to ensure safe manual handling of blocks Suitable training will also be necessary for designers specifiers and those managing contracts

Personal Protective Equipment

When handling blocks the normal protective equipment needed for use on building sites should be provided by employers and worn by individual workers in particular safety helmets safety footwear with protective toe caps and suitable gloves

Wall Ties

Serious injuries have occurred during blockwork when building double skin walls due to contact with the sharp ends and edges of some types of wall ties The exposed sharp edges should be covered or safer wall ties used

References and Reading List

Manual Handling Guidance L23 HMSO 1992 ISBN 0 11 886335 5

BS EN 1996 Design of Masonry Structures

BS 5628 1985 Code of Practice for use of masonry BSI

Contemporary Ergonomics 1989 Block laying in the construction industry Tracy M F and Gray M I

Proceedings of the Ergonomics Societyrsquos 1989 Annual Conference Ergonomics - designing progress E D Taylor and Francis 1989 ISBN 085 066 484

Safe handling and use of concrete blocks

Consideration of the points listed below will contribute significantly to safe working and manual handling

bull Minimise manual handling by delivering units as close to the place of use as safety considerations permit

bull Move units in packs and by mechanical means whenever possible

bull Load units out to above knee height

Reduce unit weight by 25 or reduce repetition by 25

Reduce unit weight by 25 or reduce repetition by 25

20kg maximum weight based upon repetition rate of 20 unitshour

The above diagram gives the typical repetitive weight limits for the laying of masonry

units based upon good site practice with adequate clean dry working areas

Special units above 20kg can be used however their use will be subject to a

specific risk assessment

bull Ensure that normal protective equipment appropriate to construction sites is both provided and used

bull Ensure that appropriate eye protection and dust suppression or extraction measures are provided when mechanically cutting or chasing units

Additional considerations include

bull Manual Handling Operations Regulations requires employers to carry out a risk assessment on all manual handling tasks

bull The Construction (Design and Management) Regulations places duties in the form of a mandatory Health and Safety system on clientsdesignerscontractors

In an attempt to provide practical guidance for meeting the requirements of these two regulations the Health and Safety Executive (HSE) has issued Construction Sheet 37 lsquoHandling Building Blocksrsquo which advises that

bull There is a risk of injury in the singlehanded repetitive manual handling of blocks heavier than 20kg

The HSE guidance does not prevent an individual handling manually small numbers of units of greater than 20kg In particular ancillary units such as quoins or reveals would fall into this category and would not be expected to be handled by a two person team

08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH ltFEFF004e006100750064006f006b0069007400650020016100690075006f007300200070006100720061006d006500740072007500730020006e006f0072011700640061006d00690020006b0075007200740069002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b00750072006900650020006c0061006200690061007500730069006100690020007000720069007400610069006b007900740069002000610075006b01610074006f00730020006b006f006b007900620117007300200070006100720065006e006700740069006e00690061006d00200073007000610075007300640069006e0069006d00750069002e0020002000530075006b0075007200740069002000500044004600200064006f006b0075006d0065006e007400610069002000670061006c006900200062016b007400690020006100740069006400610072006f006d00690020004100630072006f006200610074002000690072002000410064006f00620065002000520065006100640065007200200035002e0030002000610072002000760117006c00650073006e0117006d00690073002000760065007200730069006a006f006d00690073002egt LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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04 Block co-ordination and setting out

Overhang and perpend joint width for radius walls

The table (below) gives the relevant overhang and increased perpend joint size dependant upon wall radius and block thickness For Fairfaced work overhangs of 2mm and below are acceptable with the exception of polished blockwork where ideally no overhang should be present

Where the blockwork is being plasteredrendered or plasterboard on dabs is being used a maximum of 6mm overhang is recommended

Face size 440 x 215mm Face size 215 x 215mm

Block thickness (mm) 94 100 140 94 100 140

Wall radius (mm) Oh eP Oh eP Oh eP Oh eP Oh eP Oh eP 600 44 81 44 86 44 120 10 45 10 50 10 68 800 32 63 32 68 32 93 8 36 8 40 8 53 1000 25 52 25 56 25 76 6 31 6 34 6 44 1200 21 45 21 48 21 65 5 28 5 29 5 29 1400 18 40 18 43 18 57 4 25 4 27 4 34 1600 16 36 16 39 16 51 4 23 4 24 4 31 1800 14 33 14 36 14 46 3 22 3 23 3 28 2000 12 31 12 33 12 42 3 21 3 22 3 26 2500 10 27 10 28 10 36 2 18 2 19 2 23 3000 8 24 8 25 8 31 2 17 2 18 2 21 3500 7 22 7 23 7 28 2 16 2 17 2 19 4000 6 21 6 21 6 26 1 15 1 16 1 18 4500 5 19 5 20 5 24 1 15 1 15 1 17 5000 5 18 5 19 5 23 1 14 1 15 1 16 6000 4 17 4 18 4 21 1 14 1 14 1 15 7000 4 16 4 17 4 19 08 13 08 13 08 15 8000 3 15 3 15 3 18 07 13 07 13 07 14 9000 3 15 3 15 3 17 06 12 06 12 06 14 10000 2 14 2 15 2 16 06 12 06 12 06 13

Masonry bonds

The horizontal distance between cross jointsperpends in successive masonry courses should normally be not less than one-quarter of the length of the masonry unit but in no case less than 50mm for brick size units or 75mm for block size unitsUnless specified to the contrary units should be laid half lap stretcher bond with a nominal 10mm joint

Permissible deviations in built blockwork

The table (right) is based upon guidance given in BS 8000 pt 3 Code of practice for masonry

NOTE 1 These deviations are generally derived from BS 56061990 and

represent the level which can be reasonably expected for general brick and

block masonry

NOTE 2 These deviations should be measured in accordance with the methods

described in BS 56061990 Annex D

Height of lifts

No leaf or raked back corner should be higher that 12m above the general blockwork level Except where permitted by a proprietary system do not carry up any leaf higher than 15m in any day Where dense low absorption units are concerned this lift height per day may have to be reduced to less than 12m

Table Permissible deviations in masonry (other than stone masonry)

Dimensions Permissible deviation (mm)

Position in plan of any point or face in relation to the specified building reference line andor point at the small level

plusmn10

Straightness in any 5mm length plusmn5 Verticality up to 3m height plusmn10 Verticality up to 7m height plusmn14 Overall thickness of walls plusmn10 Level of bed joints up to 5m for brick masonry plusmn11 Level of bed joints up to 5m for block masonry plusmn13

05 Cleaning and maintenance (commodity blockwork)

Facing Masonry units and cast stone are intended to be maintenance free However the environment that the blocks are subjected to will influence whether or not the blockwork at some point in time requires cleaning

Under no circumstances do we recommend the use of pressure washes however in some circumstances such as paint spills or graffiti a high pressure steam cleaner may be used We would normally recommend the following treatments

Cleaning of blockwork is no substitute for maintenance of high standards of site work practice such as careful block handling and laying use of mortar and adequate protection of the finished work Prevention is better than cure

The cleaning of blockwork using cleaning agents inevitably requires a reasonable element of skill and should be carried out on a trial area first under supervision Appropriate PPE equipment (gloves and goggles) must be worn Cleaning the face of the material may need more than one application This will depend on the extent of the problem the deposits and the texture or profile of the block involved

All the following cleaning methods should be carried out on an inconspicuous area first to establish suitability and the effect of the process

Fair faced blocks

1 Mortar and Plaster lsquoSnotsrsquo

Where there is a build up of dry set mortar it should be removed by placing the edge of a block of wood next to it and tapping the block sideways to lift the mortar off the face

2 Mortar and Plaster Smears

Where dried mortar smears or stains occur the residue can be cleaned by use of a cleaning agent Generally those used contain Hydrochloric Acid The cleaning agent should never be used undiluted and needs to be diluted in accordance with the manufacturers recommendations

Using acid cleaners can affect the colour and texture of the block and it may require the whole wall treating to give a uniform appearance

Using a bristle brush or mist sprayer the spot or smear should be dampened with water then apply the dilute cleaner The mortar will be seen to dissolve and when judged to be clean the area must be flushed with clean water again using a brush or mist sprayer

Where wall surfaces have multiple smears and mortar deposits over the whole face of the wall initially treat any particularly heavy deposits as described above Subsequently dampen the area and apply the cleaning agent over the whole face using a mist sprayer and then thoroughly flushing down the face with clean water

Provided these recommendations are followed mortar joints will be no more affected than the surface of the blockwork always provided a cement lime sand mortar has been used If a plasticiser has been incorporated in the mortar mix a check should be made on the constituents for salt content as cleaning agents can be detrimental to some plasticisers

NOTE Hydrochloric Acid based cleaners can attack other surfaces such as

galvanised steel and care should therefore be taken in their application

3 Paint

It is essential that the type of paint and its solvent is identified - this is likely to be water benzene turpentine (pure) acetone or similar thinners The solvent is applied to the affected area whether splashes or drips using an appropriate sized brush it should be left for a little time to soften the paint When softened the area being cleaned is lsquomoppedrsquo with the moist brush used for application of the solvent the brush being squeezed after each mopping to clean it When most of the paint is cleaned from the surface of the blockwork it must be allowed to dry When dry a further application of the cleaning agent in accordance with point 2 above may be necessary finally to clean the blockwork Alternatively proprietary paint removers such as Polycell Advanced paint stripperLess Mess paint strippercan be used This gel can remove most paint types however the gel may have to be left in place for up to 6 hours

NOTE It is recommended that the paint manufacturer is contacted to advise on

the most suitable solvent to use or alternatively specialist graffiti removal

company can be used to carry out any work required

4 Oil grease bitumen and tar based materials

Solvents must be identified These may be Benzole Tetrachloroethylene lsquoDabit Offrsquo or lsquoGunkrsquo de-greasant The technique is the same as for the paint but a trial and error approach may be necessary depending on the extent of the contamination

5 Finger-marks

Apply a mist spray of clean water followed by judicious use of household detergent and a nail brush Finally mist spray again with clean water and allow to dry Repeat as necessary

06 Health and safety

Handling Building Blocks

This guidance by the Construction Industry Advisory Committee (CONIAC) covers the safe handling of building blocks by which the committee means all masonry units and blocks including those made of clay concrete reconstituted stone or any similar man-made or natural material

Handling of heavy building blocks can give rise to a wide range of injuries including serious injuries where the damage is gradual and progressive over a substantial period of time

To reduce the risk of injury the blockwork design site conditions and the way in which the work is organised should be properly planned Practical advice on these matters should help designers specifiers and those managing work on site as well as those handling the blocks

Risk Assessment

1 To minimise the risk of injury

bull All hazards involved need to be identified

bull The significant risks estimated and

bull Suitable precautions to avoid or reduce these risks incorporated into safe systems of work

2 The main hazards are

bull Heavy loads and poor posture excessive stress and strain causing injury to muscles and tendons particularly where handling involves bending twisting or other difficult postures

bull Slips trips and falls including damage caused by lsquodropped blocksrsquo

bull Sharp edges cuts and abrasions to the skin

bull Skin hazards dermatitis burns and similar conditions caused by contact with mortar (see HSE construction information sheet No 26 Cement)

3 With block handling the risk of injury is largely determined by the weight of the block - the heavier the block the higher the risk of injury

4 After taking account of expert opinion and the long history of complaints over handling heavy blocks CONIAC has concluded that there is a high risk of injury in the single-handed repetitive manual handling of blocks heavier than 20kg (44 lbs)

5 If single person handling is needed either blocks of 20kg or lighter should be specified and used or as a last resort where special units are necessary over 20kg such as quion blocks the laying rate should reduced to less than 15 unitshour and restricted to a maximum of 2 hoursday

The work area should be organised to restrict the amount of bending and stretching especially below knee high and above shoulder height

6 With blocks weighing less than 20kg Manual handling risks are still significant and suitable precautions should be taken to minimise these risks as much as possible

Precautions

Designers and specifiers should take the weight guideline into account at the design and specification stage of the project

Where special units such as pad stones quoins are required that are over 20 kg measures to provide intermediate staging should be specified to ensure bending and stretching is minimised

Project planners and contractors should follow the weight guidelines and ensure that the precautions listed opposite are taken into account when planning the work and when devising safe systems of work

Contractors should also give instruction and exercise supervision to ensure that workers follow these plans and systems of work

The Task

Handle and lay building blocks in accordance with the following

bull Plan to stack blocks close to where they will be used

bull Stack on a level firm base and wherever possible without double stacking of block packs

bull Keep manhandling of blocks to a minimum and use mechanical lifting and handling aids as much as possible such as cranes fork-lift trucks with pallets trolleys and telescopic handlers

NOTE ensure that the landing area of scaffolding is adequate for the temporary

loading of blocks

bull Always use mechanical lifting and handling or operate a two person system for blocks weighting more than 20kg

bull Arrange work to avoid over-reaching or twisting when handling blocks

bull Ensure good grip and secure foot placement in the working area when handling blocks

Arrange the work so that blocks only need to be handled up to shoulder height Go higher by using staging for instance

NOTE further protection against falls may be necessary if the effective height of

guard rails is reduced) Particular care and attention is needed for higher risk

block laying such as when head room is restricted under soffits or below

working platform level

07 Health and safety

The Working Environment

Prepare roads and hard standing first and before blocks are on site In areas where blocks are carried or handled keep the site clear of obstacles or tripping hazards such as discarded block wrappings or stack ties Uneven slippery or unstable ground conditions increase the risk of injury Blocks should be protected from the weather to avoid them getting wet and increasing in weight

Training

Workers should be given information and training on the systems of work and procedures to be used on that site to ensure safe manual handling of blocks Suitable training will also be necessary for designers specifiers and those managing contracts

Personal Protective Equipment

When handling blocks the normal protective equipment needed for use on building sites should be provided by employers and worn by individual workers in particular safety helmets safety footwear with protective toe caps and suitable gloves

Wall Ties

Serious injuries have occurred during blockwork when building double skin walls due to contact with the sharp ends and edges of some types of wall ties The exposed sharp edges should be covered or safer wall ties used

References and Reading List

Manual Handling Guidance L23 HMSO 1992 ISBN 0 11 886335 5

BS EN 1996 Design of Masonry Structures

BS 5628 1985 Code of Practice for use of masonry BSI

Contemporary Ergonomics 1989 Block laying in the construction industry Tracy M F and Gray M I

Proceedings of the Ergonomics Societyrsquos 1989 Annual Conference Ergonomics - designing progress E D Taylor and Francis 1989 ISBN 085 066 484

Safe handling and use of concrete blocks

Consideration of the points listed below will contribute significantly to safe working and manual handling

bull Minimise manual handling by delivering units as close to the place of use as safety considerations permit

bull Move units in packs and by mechanical means whenever possible

bull Load units out to above knee height

Reduce unit weight by 25 or reduce repetition by 25

Reduce unit weight by 25 or reduce repetition by 25

20kg maximum weight based upon repetition rate of 20 unitshour

The above diagram gives the typical repetitive weight limits for the laying of masonry

units based upon good site practice with adequate clean dry working areas

Special units above 20kg can be used however their use will be subject to a

specific risk assessment

bull Ensure that normal protective equipment appropriate to construction sites is both provided and used

bull Ensure that appropriate eye protection and dust suppression or extraction measures are provided when mechanically cutting or chasing units

Additional considerations include

bull Manual Handling Operations Regulations requires employers to carry out a risk assessment on all manual handling tasks

bull The Construction (Design and Management) Regulations places duties in the form of a mandatory Health and Safety system on clientsdesignerscontractors

In an attempt to provide practical guidance for meeting the requirements of these two regulations the Health and Safety Executive (HSE) has issued Construction Sheet 37 lsquoHandling Building Blocksrsquo which advises that

bull There is a risk of injury in the singlehanded repetitive manual handling of blocks heavier than 20kg

The HSE guidance does not prevent an individual handling manually small numbers of units of greater than 20kg In particular ancillary units such as quoins or reveals would fall into this category and would not be expected to be handled by a two person team

08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU ltFEFF00560065007200770065006e00640065006e0020005300690065002000640069006500730065002000450069006e007300740065006c006c0075006e00670065006e0020007a0075006d002000450072007300740065006c006c0065006e00200076006f006e002000410064006f006200650020005000440046002d0044006f006b0075006d0065006e00740065006e002c00200076006f006e002000640065006e0065006e002000530069006500200068006f006300680077006500720074006900670065002000500072006500700072006500730073002d0044007200750063006b0065002000650072007a0065007500670065006e0020006d00f60063006800740065006e002e002000450072007300740065006c006c007400650020005000440046002d0044006f006b0075006d0065006e007400650020006b00f6006e006e0065006e0020006d006900740020004100630072006f00620061007400200075006e0064002000410064006f00620065002000520065006100640065007200200035002e00300020006f0064006500720020006800f600680065007200200067006500f600660066006e00650074002000770065007200640065006e002egt ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE ltFEFF0041006e007600e4006e00640020006400650020006800e4007200200069006e0073007400e4006c006c006e0069006e006700610072006e00610020006f006d002000640075002000760069006c006c00200073006b006100700061002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e007400200073006f006d002000e400720020006c00e4006d0070006c0069006700610020006600f60072002000700072006500700072006500730073002d007500740073006b00720069006600740020006d006500640020006800f600670020006b00760061006c0069007400650074002e002000200053006b006100700061006400650020005000440046002d0064006f006b0075006d0065006e00740020006b0061006e002000f600700070006e00610073002000690020004100630072006f0062006100740020006f00630068002000410064006f00620065002000520065006100640065007200200035002e00300020006f00630068002000730065006e006100720065002egt TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

05 Cleaning and maintenance (commodity blockwork)

Facing Masonry units and cast stone are intended to be maintenance free However the environment that the blocks are subjected to will influence whether or not the blockwork at some point in time requires cleaning

Under no circumstances do we recommend the use of pressure washes however in some circumstances such as paint spills or graffiti a high pressure steam cleaner may be used We would normally recommend the following treatments

Cleaning of blockwork is no substitute for maintenance of high standards of site work practice such as careful block handling and laying use of mortar and adequate protection of the finished work Prevention is better than cure

The cleaning of blockwork using cleaning agents inevitably requires a reasonable element of skill and should be carried out on a trial area first under supervision Appropriate PPE equipment (gloves and goggles) must be worn Cleaning the face of the material may need more than one application This will depend on the extent of the problem the deposits and the texture or profile of the block involved

All the following cleaning methods should be carried out on an inconspicuous area first to establish suitability and the effect of the process

Fair faced blocks

1 Mortar and Plaster lsquoSnotsrsquo

Where there is a build up of dry set mortar it should be removed by placing the edge of a block of wood next to it and tapping the block sideways to lift the mortar off the face

2 Mortar and Plaster Smears

Where dried mortar smears or stains occur the residue can be cleaned by use of a cleaning agent Generally those used contain Hydrochloric Acid The cleaning agent should never be used undiluted and needs to be diluted in accordance with the manufacturers recommendations

Using acid cleaners can affect the colour and texture of the block and it may require the whole wall treating to give a uniform appearance

Using a bristle brush or mist sprayer the spot or smear should be dampened with water then apply the dilute cleaner The mortar will be seen to dissolve and when judged to be clean the area must be flushed with clean water again using a brush or mist sprayer

Where wall surfaces have multiple smears and mortar deposits over the whole face of the wall initially treat any particularly heavy deposits as described above Subsequently dampen the area and apply the cleaning agent over the whole face using a mist sprayer and then thoroughly flushing down the face with clean water

Provided these recommendations are followed mortar joints will be no more affected than the surface of the blockwork always provided a cement lime sand mortar has been used If a plasticiser has been incorporated in the mortar mix a check should be made on the constituents for salt content as cleaning agents can be detrimental to some plasticisers

NOTE Hydrochloric Acid based cleaners can attack other surfaces such as

galvanised steel and care should therefore be taken in their application

3 Paint

It is essential that the type of paint and its solvent is identified - this is likely to be water benzene turpentine (pure) acetone or similar thinners The solvent is applied to the affected area whether splashes or drips using an appropriate sized brush it should be left for a little time to soften the paint When softened the area being cleaned is lsquomoppedrsquo with the moist brush used for application of the solvent the brush being squeezed after each mopping to clean it When most of the paint is cleaned from the surface of the blockwork it must be allowed to dry When dry a further application of the cleaning agent in accordance with point 2 above may be necessary finally to clean the blockwork Alternatively proprietary paint removers such as Polycell Advanced paint stripperLess Mess paint strippercan be used This gel can remove most paint types however the gel may have to be left in place for up to 6 hours

NOTE It is recommended that the paint manufacturer is contacted to advise on

the most suitable solvent to use or alternatively specialist graffiti removal

company can be used to carry out any work required

4 Oil grease bitumen and tar based materials

Solvents must be identified These may be Benzole Tetrachloroethylene lsquoDabit Offrsquo or lsquoGunkrsquo de-greasant The technique is the same as for the paint but a trial and error approach may be necessary depending on the extent of the contamination

5 Finger-marks

Apply a mist spray of clean water followed by judicious use of household detergent and a nail brush Finally mist spray again with clean water and allow to dry Repeat as necessary

06 Health and safety

Handling Building Blocks

This guidance by the Construction Industry Advisory Committee (CONIAC) covers the safe handling of building blocks by which the committee means all masonry units and blocks including those made of clay concrete reconstituted stone or any similar man-made or natural material

Handling of heavy building blocks can give rise to a wide range of injuries including serious injuries where the damage is gradual and progressive over a substantial period of time

To reduce the risk of injury the blockwork design site conditions and the way in which the work is organised should be properly planned Practical advice on these matters should help designers specifiers and those managing work on site as well as those handling the blocks

Risk Assessment

1 To minimise the risk of injury

bull All hazards involved need to be identified

bull The significant risks estimated and

bull Suitable precautions to avoid or reduce these risks incorporated into safe systems of work

2 The main hazards are

bull Heavy loads and poor posture excessive stress and strain causing injury to muscles and tendons particularly where handling involves bending twisting or other difficult postures

bull Slips trips and falls including damage caused by lsquodropped blocksrsquo

bull Sharp edges cuts and abrasions to the skin

bull Skin hazards dermatitis burns and similar conditions caused by contact with mortar (see HSE construction information sheet No 26 Cement)

3 With block handling the risk of injury is largely determined by the weight of the block - the heavier the block the higher the risk of injury

4 After taking account of expert opinion and the long history of complaints over handling heavy blocks CONIAC has concluded that there is a high risk of injury in the single-handed repetitive manual handling of blocks heavier than 20kg (44 lbs)

5 If single person handling is needed either blocks of 20kg or lighter should be specified and used or as a last resort where special units are necessary over 20kg such as quion blocks the laying rate should reduced to less than 15 unitshour and restricted to a maximum of 2 hoursday

The work area should be organised to restrict the amount of bending and stretching especially below knee high and above shoulder height

6 With blocks weighing less than 20kg Manual handling risks are still significant and suitable precautions should be taken to minimise these risks as much as possible

Precautions

Designers and specifiers should take the weight guideline into account at the design and specification stage of the project

Where special units such as pad stones quoins are required that are over 20 kg measures to provide intermediate staging should be specified to ensure bending and stretching is minimised

Project planners and contractors should follow the weight guidelines and ensure that the precautions listed opposite are taken into account when planning the work and when devising safe systems of work

Contractors should also give instruction and exercise supervision to ensure that workers follow these plans and systems of work

The Task

Handle and lay building blocks in accordance with the following

bull Plan to stack blocks close to where they will be used

bull Stack on a level firm base and wherever possible without double stacking of block packs

bull Keep manhandling of blocks to a minimum and use mechanical lifting and handling aids as much as possible such as cranes fork-lift trucks with pallets trolleys and telescopic handlers

NOTE ensure that the landing area of scaffolding is adequate for the temporary

loading of blocks

bull Always use mechanical lifting and handling or operate a two person system for blocks weighting more than 20kg

bull Arrange work to avoid over-reaching or twisting when handling blocks

bull Ensure good grip and secure foot placement in the working area when handling blocks

Arrange the work so that blocks only need to be handled up to shoulder height Go higher by using staging for instance

NOTE further protection against falls may be necessary if the effective height of

guard rails is reduced) Particular care and attention is needed for higher risk

block laying such as when head room is restricted under soffits or below

working platform level

07 Health and safety

The Working Environment

Prepare roads and hard standing first and before blocks are on site In areas where blocks are carried or handled keep the site clear of obstacles or tripping hazards such as discarded block wrappings or stack ties Uneven slippery or unstable ground conditions increase the risk of injury Blocks should be protected from the weather to avoid them getting wet and increasing in weight

Training

Workers should be given information and training on the systems of work and procedures to be used on that site to ensure safe manual handling of blocks Suitable training will also be necessary for designers specifiers and those managing contracts

Personal Protective Equipment

When handling blocks the normal protective equipment needed for use on building sites should be provided by employers and worn by individual workers in particular safety helmets safety footwear with protective toe caps and suitable gloves

Wall Ties

Serious injuries have occurred during blockwork when building double skin walls due to contact with the sharp ends and edges of some types of wall ties The exposed sharp edges should be covered or safer wall ties used

References and Reading List

Manual Handling Guidance L23 HMSO 1992 ISBN 0 11 886335 5

BS EN 1996 Design of Masonry Structures

BS 5628 1985 Code of Practice for use of masonry BSI

Contemporary Ergonomics 1989 Block laying in the construction industry Tracy M F and Gray M I

Proceedings of the Ergonomics Societyrsquos 1989 Annual Conference Ergonomics - designing progress E D Taylor and Francis 1989 ISBN 085 066 484

Safe handling and use of concrete blocks

Consideration of the points listed below will contribute significantly to safe working and manual handling

bull Minimise manual handling by delivering units as close to the place of use as safety considerations permit

bull Move units in packs and by mechanical means whenever possible

bull Load units out to above knee height

Reduce unit weight by 25 or reduce repetition by 25

Reduce unit weight by 25 or reduce repetition by 25

20kg maximum weight based upon repetition rate of 20 unitshour

The above diagram gives the typical repetitive weight limits for the laying of masonry

units based upon good site practice with adequate clean dry working areas

Special units above 20kg can be used however their use will be subject to a

specific risk assessment

bull Ensure that normal protective equipment appropriate to construction sites is both provided and used

bull Ensure that appropriate eye protection and dust suppression or extraction measures are provided when mechanically cutting or chasing units

Additional considerations include

bull Manual Handling Operations Regulations requires employers to carry out a risk assessment on all manual handling tasks

bull The Construction (Design and Management) Regulations places duties in the form of a mandatory Health and Safety system on clientsdesignerscontractors

In an attempt to provide practical guidance for meeting the requirements of these two regulations the Health and Safety Executive (HSE) has issued Construction Sheet 37 lsquoHandling Building Blocksrsquo which advises that

bull There is a risk of injury in the singlehanded repetitive manual handling of blocks heavier than 20kg

The HSE guidance does not prevent an individual handling manually small numbers of units of greater than 20kg In particular ancillary units such as quoins or reveals would fall into this category and would not be expected to be handled by a two person team

08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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ltFEFF00560065007200770065006e00640065006e0020005300690065002000640069006500730065002000450069006e007300740065006c006c0075006e00670065006e0020007a0075006d002000450072007300740065006c006c0065006e00200076006f006e002000410064006f006200650020005000440046002d0044006f006b0075006d0065006e00740065006e002c00200076006f006e002000640065006e0065006e002000530069006500200068006f006300680077006500720074006900670065002000500072006500700072006500730073002d0044007200750063006b0065002000650072007a0065007500670065006e0020006d00f60063006800740065006e002e002000450072007300740065006c006c007400650020005000440046002d0044006f006b0075006d0065006e007400650020006b00f6006e006e0065006e0020006d006900740020004100630072006f00620061007400200075006e0064002000410064006f00620065002000520065006100640065007200200035002e00300020006f0064006500720020006800f600680065007200200067006500f600660066006e00650074002000770065007200640065006e002egt ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK 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06 Health and safety

Handling Building Blocks

This guidance by the Construction Industry Advisory Committee (CONIAC) covers the safe handling of building blocks by which the committee means all masonry units and blocks including those made of clay concrete reconstituted stone or any similar man-made or natural material

Handling of heavy building blocks can give rise to a wide range of injuries including serious injuries where the damage is gradual and progressive over a substantial period of time

To reduce the risk of injury the blockwork design site conditions and the way in which the work is organised should be properly planned Practical advice on these matters should help designers specifiers and those managing work on site as well as those handling the blocks

Risk Assessment

1 To minimise the risk of injury

bull All hazards involved need to be identified

bull The significant risks estimated and

bull Suitable precautions to avoid or reduce these risks incorporated into safe systems of work

2 The main hazards are

bull Heavy loads and poor posture excessive stress and strain causing injury to muscles and tendons particularly where handling involves bending twisting or other difficult postures

bull Slips trips and falls including damage caused by lsquodropped blocksrsquo

bull Sharp edges cuts and abrasions to the skin

bull Skin hazards dermatitis burns and similar conditions caused by contact with mortar (see HSE construction information sheet No 26 Cement)

3 With block handling the risk of injury is largely determined by the weight of the block - the heavier the block the higher the risk of injury

4 After taking account of expert opinion and the long history of complaints over handling heavy blocks CONIAC has concluded that there is a high risk of injury in the single-handed repetitive manual handling of blocks heavier than 20kg (44 lbs)

5 If single person handling is needed either blocks of 20kg or lighter should be specified and used or as a last resort where special units are necessary over 20kg such as quion blocks the laying rate should reduced to less than 15 unitshour and restricted to a maximum of 2 hoursday

The work area should be organised to restrict the amount of bending and stretching especially below knee high and above shoulder height

6 With blocks weighing less than 20kg Manual handling risks are still significant and suitable precautions should be taken to minimise these risks as much as possible

Precautions

Designers and specifiers should take the weight guideline into account at the design and specification stage of the project

Where special units such as pad stones quoins are required that are over 20 kg measures to provide intermediate staging should be specified to ensure bending and stretching is minimised

Project planners and contractors should follow the weight guidelines and ensure that the precautions listed opposite are taken into account when planning the work and when devising safe systems of work

Contractors should also give instruction and exercise supervision to ensure that workers follow these plans and systems of work

The Task

Handle and lay building blocks in accordance with the following

bull Plan to stack blocks close to where they will be used

bull Stack on a level firm base and wherever possible without double stacking of block packs

bull Keep manhandling of blocks to a minimum and use mechanical lifting and handling aids as much as possible such as cranes fork-lift trucks with pallets trolleys and telescopic handlers

NOTE ensure that the landing area of scaffolding is adequate for the temporary

loading of blocks

bull Always use mechanical lifting and handling or operate a two person system for blocks weighting more than 20kg

bull Arrange work to avoid over-reaching or twisting when handling blocks

bull Ensure good grip and secure foot placement in the working area when handling blocks

Arrange the work so that blocks only need to be handled up to shoulder height Go higher by using staging for instance

NOTE further protection against falls may be necessary if the effective height of

guard rails is reduced) Particular care and attention is needed for higher risk

block laying such as when head room is restricted under soffits or below

working platform level

07 Health and safety

The Working Environment

Prepare roads and hard standing first and before blocks are on site In areas where blocks are carried or handled keep the site clear of obstacles or tripping hazards such as discarded block wrappings or stack ties Uneven slippery or unstable ground conditions increase the risk of injury Blocks should be protected from the weather to avoid them getting wet and increasing in weight

Training

Workers should be given information and training on the systems of work and procedures to be used on that site to ensure safe manual handling of blocks Suitable training will also be necessary for designers specifiers and those managing contracts

Personal Protective Equipment

When handling blocks the normal protective equipment needed for use on building sites should be provided by employers and worn by individual workers in particular safety helmets safety footwear with protective toe caps and suitable gloves

Wall Ties

Serious injuries have occurred during blockwork when building double skin walls due to contact with the sharp ends and edges of some types of wall ties The exposed sharp edges should be covered or safer wall ties used

References and Reading List

Manual Handling Guidance L23 HMSO 1992 ISBN 0 11 886335 5

BS EN 1996 Design of Masonry Structures

BS 5628 1985 Code of Practice for use of masonry BSI

Contemporary Ergonomics 1989 Block laying in the construction industry Tracy M F and Gray M I

Proceedings of the Ergonomics Societyrsquos 1989 Annual Conference Ergonomics - designing progress E D Taylor and Francis 1989 ISBN 085 066 484

Safe handling and use of concrete blocks

Consideration of the points listed below will contribute significantly to safe working and manual handling

bull Minimise manual handling by delivering units as close to the place of use as safety considerations permit

bull Move units in packs and by mechanical means whenever possible

bull Load units out to above knee height

Reduce unit weight by 25 or reduce repetition by 25

Reduce unit weight by 25 or reduce repetition by 25

20kg maximum weight based upon repetition rate of 20 unitshour

The above diagram gives the typical repetitive weight limits for the laying of masonry

units based upon good site practice with adequate clean dry working areas

Special units above 20kg can be used however their use will be subject to a

specific risk assessment

bull Ensure that normal protective equipment appropriate to construction sites is both provided and used

bull Ensure that appropriate eye protection and dust suppression or extraction measures are provided when mechanically cutting or chasing units

Additional considerations include

bull Manual Handling Operations Regulations requires employers to carry out a risk assessment on all manual handling tasks

bull The Construction (Design and Management) Regulations places duties in the form of a mandatory Health and Safety system on clientsdesignerscontractors

In an attempt to provide practical guidance for meeting the requirements of these two regulations the Health and Safety Executive (HSE) has issued Construction Sheet 37 lsquoHandling Building Blocksrsquo which advises that

bull There is a risk of injury in the singlehanded repetitive manual handling of blocks heavier than 20kg

The HSE guidance does not prevent an individual handling manually small numbers of units of greater than 20kg In particular ancillary units such as quoins or reveals would fall into this category and would not be expected to be handled by a two person team

08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 RUM 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07 Health and safety

The Working Environment

Prepare roads and hard standing first and before blocks are on site In areas where blocks are carried or handled keep the site clear of obstacles or tripping hazards such as discarded block wrappings or stack ties Uneven slippery or unstable ground conditions increase the risk of injury Blocks should be protected from the weather to avoid them getting wet and increasing in weight

Training

Workers should be given information and training on the systems of work and procedures to be used on that site to ensure safe manual handling of blocks Suitable training will also be necessary for designers specifiers and those managing contracts

Personal Protective Equipment

When handling blocks the normal protective equipment needed for use on building sites should be provided by employers and worn by individual workers in particular safety helmets safety footwear with protective toe caps and suitable gloves

Wall Ties

Serious injuries have occurred during blockwork when building double skin walls due to contact with the sharp ends and edges of some types of wall ties The exposed sharp edges should be covered or safer wall ties used

References and Reading List

Manual Handling Guidance L23 HMSO 1992 ISBN 0 11 886335 5

BS EN 1996 Design of Masonry Structures

BS 5628 1985 Code of Practice for use of masonry BSI

Contemporary Ergonomics 1989 Block laying in the construction industry Tracy M F and Gray M I

Proceedings of the Ergonomics Societyrsquos 1989 Annual Conference Ergonomics - designing progress E D Taylor and Francis 1989 ISBN 085 066 484

Safe handling and use of concrete blocks

Consideration of the points listed below will contribute significantly to safe working and manual handling

bull Minimise manual handling by delivering units as close to the place of use as safety considerations permit

bull Move units in packs and by mechanical means whenever possible

bull Load units out to above knee height

Reduce unit weight by 25 or reduce repetition by 25

Reduce unit weight by 25 or reduce repetition by 25

20kg maximum weight based upon repetition rate of 20 unitshour

The above diagram gives the typical repetitive weight limits for the laying of masonry

units based upon good site practice with adequate clean dry working areas

Special units above 20kg can be used however their use will be subject to a

specific risk assessment

bull Ensure that normal protective equipment appropriate to construction sites is both provided and used

bull Ensure that appropriate eye protection and dust suppression or extraction measures are provided when mechanically cutting or chasing units

Additional considerations include

bull Manual Handling Operations Regulations requires employers to carry out a risk assessment on all manual handling tasks

bull The Construction (Design and Management) Regulations places duties in the form of a mandatory Health and Safety system on clientsdesignerscontractors

In an attempt to provide practical guidance for meeting the requirements of these two regulations the Health and Safety Executive (HSE) has issued Construction Sheet 37 lsquoHandling Building Blocksrsquo which advises that

bull There is a risk of injury in the singlehanded repetitive manual handling of blocks heavier than 20kg

The HSE guidance does not prevent an individual handling manually small numbers of units of greater than 20kg In particular ancillary units such as quoins or reveals would fall into this category and would not be expected to be handled by a two person team

08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE ltFEFF0041006e007600e4006e00640020006400650020006800e4007200200069006e0073007400e4006c006c006e0069006e006700610072006e00610020006f006d002000640075002000760069006c006c00200073006b006100700061002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e007400200073006f006d002000e400720020006c00e4006d0070006c0069006700610020006600f60072002000700072006500700072006500730073002d007500740073006b00720069006600740020006d006500640020006800f600670020006b00760061006c0069007400650074002e002000200053006b006100700061006400650020005000440046002d0064006f006b0075006d0065006e00740020006b0061006e002000f600700070006e00610073002000690020004100630072006f0062006100740020006f00630068002000410064006f00620065002000520065006100640065007200200035002e00300020006f00630068002000730065006e006100720065002egt TUR ltFEFF005900fc006b00730065006b0020006b0061006c006900740065006c0069002000f6006e002000790061007a006401310072006d00610020006200610073006b013100730131006e006100200065006e0020006900790069002000750079006100620069006c006500630065006b002000410064006f006200650020005000440046002000620065006c00670065006c0065007200690020006f006c0075015f007400750072006d0061006b0020006900e70069006e00200062007500200061007900610072006c0061007201310020006b0075006c006c0061006e0131006e002e00200020004f006c0075015f0074007500720075006c0061006e0020005000440046002000620065006c00670065006c0065007200690020004100630072006f006200610074002000760065002000410064006f00620065002000520065006100640065007200200035002e003000200076006500200073006f006e0072006100730131006e00640061006b00690020007300fc007200fc006d006c00650072006c00650020006100e70131006c006100620069006c00690072002egt UKR 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08 Health and safety

The guidance given in Construction Sheet 37 is not mandatory but gives a method of meeting the requirements of the regulations

Where previously units greater than 20 kg would have been specified consideration should be given to using either less dense units or smaller unit sizes or alternative masonry wall constructions The appropriate choice from the options available will depend on the unit or wall properties dictated by the application

Choices include

bull Using lighter solid units having sufficiently similar properties

bull Using cellularhollow units instead of solid units (having almost identical properties to solid units)

bull Using alternative construction techniques such as i) Laying units flat to form a 190 or 215mm width wall (suitable for finishes such as plastering or drylining) ii) Collar joining units to form a 190 or 215mm width wall (particularly suited to facing applications)

Whenever making the choice of units it is essential to ensure that the desired performance characteristics of the finished wall are not compromised

Collar jointing is laying units back to back in normal aspect with a 10-15mm mortar joint between the adjoining faces of the units The two leaves may be tied together If tied either normal ties or bed joint reinforcement may be used Collar jointed walls are not suitable for separating walls in dwellings

COSHH data

Full COSHH data on the Masterblock range is available on request Please call the Technical helpline on 01285 646800

09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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09 Mortars

Masonry mortars may be specified as designed mixes (Strength Performance) or prescribed mixes (Recipe)both types of mortar can be either factory made or site made Traditionally prescribed mixes have been used in the UK and have a proven durability

PD 6678 2005 (Guide to the specification of masonry mortar) gives guidance on the specification of mortar and although BS EN 998-2 applies to factory made mortars it can be referred to for site made mortars

Where coloured mortars are used to avoid inconsistencies it is now common practice to use dry silo mortar or alternatively retarded ready to use mortars When specifying mortars consideration should be given to minimising the number of different mortar mixes to be used on a single project to reduce the risk of confusion arising onsite

Euro-code 6 categorises the exposure levels by MX numbers and in most cases in the UK the most severe exposure S relates to exposure category level MX 32 lsquo exposed to severe wetting and freeze thaw cycles but not exposed to external sources of significant levels of sulfates t or aggressive chemicals lsquo in this instance mortar designation II is required

Table Masonry mortars

In most locations in the UK masonry above dpc excluding parapets walls and copings a designation III mortar is suitable for most masonry unit types

In general the stronger the mix designation (ie I) the greater the strength and durability however the weaker the mix designation (ie IV) the least strong it is however it has the greatest ability to accommodate thermal and moisture movement The use of mortar mixes stronger than the masonry unit strength can result in cracking in the built wall causing the actual masonry unit to crack

Typically in the UK a designation III mortar is suitable for most locations and masonry units however a degree of caution has to be taken when specifying a designed mortar as a M4 mortar may well have a strength well in-excess of 40Nmm2 and as such is not suitable for masonry units of a 36 Nmm2 strength and may not be suitable even for a 73Nmm2 masonry unit

Details of the relevant mortar designations are provided in the table below

Mortar designation

Compressive strength class

Prescribed mortars (proportion of materials by volume) (see notes a and b)

Compressive strength at

28 days (Nmm2)

Cementc lime sand with or without air

entrainment

Cementc sand with or without air

entrainment

Masonry cementd

sand

Masonry cemente

sand

Increasing ability to accommodate movement eg due to

(i) M12 10 to 143 13 Not suitable Not suitable 12

(ii) M6 1124 to 412 13 to 4 1212 to 312 13 6

settlement temperature and moisture changes

(iii) M4 115 to 6 15 to 6 14 to 5 1312 to 4 4

(iv) M2 128 to 9 17 to 8 1512 to 612 1412 2

NOTES

a) Proportioning by mass will give more accurate batching than proportioning by volume provided that the bulk densities of the materials are checked on site

b) When the sand portion is given as for example 5 to 6 the lower figure should be used with sands containing a higher proprtion of fines whilst the higher figure

should be used with sands containing a lower proportion of fines

c) Cement conforming to BS EN 197-1 Notation CEM I (Portland cement) Cement conforming to BS EN 197-1 Notation CEM IIA-S or CEM IIB-S (Portland slag

cement) or CEM IIA-L or CEM IIA-LL (Portland Limestone cement) or CEM IIA-V or CEM IIB-V (portland fly ash cement) or a combination with equivalent

proportions and properties to one of these cements

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and ground granulated blast furnace slag conforming to BS

6699 where the proportions and properties conform to CEM IIA-S or CEM IIB-S of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and limestone fines conforming to BS 7979 where the

proportions and properties conform to CEM IIA-L or CEM IIA-LL of BS EN 197-12000 except Clause 9 of that standard

bull Combinations produced in the mortar mixer from Portland cement CEM I conforming to BS EN 197-1 and pulverized fuel ash conforming to BS 3892-1 or to BS

EN 450-1 where the proportions and properties confirm to CEM IIA-V or CEM IIB-V or BS EN 197-12000 except Clause 9 of that standard

d) Masonry cement conforming to BS EN 413-1 Class MC 125 (inorganic filler other than lime) not less than 65 by mass of Portland cement clinker as defined in

BS EN 197-1

e) Masonry cement conforming to BS EN 413-1 Class MC 125 (lime) not less than 65 by mass of Portland cement clinker as defined in BS EN 197-1

f) Table 33 is based on data from EC6 and the National Annex

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE ltFEFF0041006e007600e4006e00640020006400650020006800e4007200200069006e0073007400e4006c006c006e0069006e006700610072006e00610020006f006d002000640075002000760069006c006c00200073006b006100700061002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e007400200073006f006d002000e400720020006c00e4006d0070006c0069006700610020006600f60072002000700072006500700072006500730073002d007500740073006b00720069006600740020006d006500640020006800f600670020006b00760061006c0069007400650074002e002000200053006b006100700061006400650020005000440046002d0064006f006b0075006d0065006e00740020006b0061006e002000f600700070006e00610073002000690020004100630072006f0062006100740020006f00630068002000410064006f00620065002000520065006100640065007200200035002e00300020006f00630068002000730065006e006100720065002egt TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

10 Mortars

Bedding and jointing Flush or bag rubbed joint

Where solid or cellular units are being used these should be This finish gives maximum bearing area and is laid on a full bed of mortar and in the case of cellular units often favoured when coarse textured units are the solid end should be laid upwards to allow for a full bed used With some masonry unit types the finish may of mortar to be applied Perpend joints should be fully filled appear a little irregular as failure to do so will effect the built strength weather and

Curved recessed (bucket handle) air tightness of the structure

This joint can give an improved appearance over a The choice of joint profile will depend upon the appearance

flush joint with negligible reduction in strength It is required and the degree of exposure Tooled and non

generally considered that this joint gives the best recessed joints provide the best resistance to rain

weather resistance due to the smoothing of the penetration in comparison with non tooled joints

joint and the superior bond this achieves It is Recessed joints increase the risk of water penetration and perhaps the most commonly used joint as such when used external facades they should have a

Struck or weathered minimal recess (typically 5mm) and wherever possible this should be tooled Weathered bed joints produce an interplay of light

and shadow on the masonry Such joints when Flush jointing can be difficult to achieve especially with

correctly made have excellent strength and textured blocks and can result in mortar smears on the face

weather resistance and as such is not recommended for blockwork to be built fair

Overhung struck

This finish gives a slightly different appearance of light and shade to struck weathered jointing Unfortunately it allows rain to lodge on the horizontal faces of the masonry units and thus to penetrate the units and joints causing discolouration and possible front damage For these reasons it should be confined to lightly stressed interior walls and external walls using appropriate quality units

Square recessed

This joint when used with durable masonry units can produce a very pleaseing effect but its weather resistance and strength will be considerably less than struck flush or curved recess joints With heavily perforated units where the perforations occur near to the face a recessed joint may be inadvisable because resistance to water penetration may be impaired

For complementary mortar colours and bond patterns please refer to the following data sheets

Bradstone walling range

See Aggregate Industries technical information manual Bradstone walling guide

11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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11 Fire resistance

The following tables are based upon BS EN 1996-1-2 2005

The Tables are only valid for walls complying with BS EN 1996 part 1-1 part 2 and part 3 For walls designed in accordance with BS 5628 see individual product data sheets

Under BS EN 1996-1-2 masonry members must be considered against various criteria in relation to their fire resistance for standard fire exposure these being

R - Mechanical resistance

E - Integrity

I - Insulation

M - Mechanical impact (not relevant in the UK)

The form and function of the masonry walls in relation to their nominal fire exposure criterion are as follows

Load-bearing only - Criterion R

Separating only - Criterion EI

Separating and Load-bearing - Criterion REI

The thickness given in the tables below are for masonry alone excluding finishes For each specification the top row of figures are for walls without applied finishes or just a thin renderparge

The values in brackets are for walls having a applied finish of gypsum premixed plaster to BS EN 13279-1 or plaster type LW or T in accordance with BS EN 998-1

Plaster is assumed to be at least 10mm thick and in the case of a single leaf wall this is required both sides or in the case of a cavity wall it is assumed to be on fire exposed face

Note - Sand Cement render is not considered to increase the fire resistance of the wall

Lightweight aggregate units include (Masterlite Pro Masterlite Ultra Masterlite ProAcoustic and EnviroBlock lightweight)

Dense aggregate units include (StoneMaster Bradstone walling range Ashlar Masterdenz Masterdenz Fairfaced and Enviroblock Dense)

Group 1 Units All solid units and 100mm Cellular (Check with Sales Office)

Group 2 Units All Cellular Multicell and Hollow units of 140mm thickness and higher (Check with Sales Office)

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating non-loadbearing separating walls (criteria El) for fire resistance classifications

Material properites gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700 50 70 75 75 90 100

(50) (50) (60) (70) (75) (75)

Dense aggregate 1200 le p le 2400 50 70 90 90 100 100

(50) (50) (70) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

Dense aggregate 720 le p le 1800 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

NOTE This table is based on data from NA to EC6 Part 1-2

12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

ltlt ASCII85EncodePages false AllowTransparency false AutoPositionEPSFiles true AutoRotatePages None Binding Left CalGrayProfile (Dot Gain 20) CalRGBProfile (sRGB IEC61966-21) CalCMYKProfile (US Web Coated 050SWOP051 v2) sRGBProfile (sRGB IEC61966-21) CannotEmbedFontPolicy Error CompatibilityLevel 14 CompressObjects Tags CompressPages true ConvertImagesToIndexed true PassThroughJPEGImages true CreateJobTicket false DefaultRenderingIntent Default DetectBlends true DetectCurves 00000 ColorConversionStrategy CMYK DoThumbnails false EmbedAllFonts true EmbedOpenType false ParseICCProfilesInComments true EmbedJobOptions true DSCReportingLevel 0 EmitDSCWarnings false EndPage -1 ImageMemory 1048576 LockDistillerParams false MaxSubsetPct 100 Optimize true OPM 1 ParseDSCComments true ParseDSCCommentsForDocInfo true PreserveCopyPage true PreserveDICMYKValues true PreserveEPSInfo true PreserveFlatness true PreserveHalftoneInfo false PreserveOPIComments true PreserveOverprintSettings true StartPage 1 SubsetFonts true TransferFunctionInfo Apply UCRandBGInfo Preserve UsePrologue false ColorSettingsFile () AlwaysEmbed [ true ] NeverEmbed [ true ] AntiAliasColorImages false CropColorImages true ColorImageMinResolution 300 ColorImageMinResolutionPolicy OK DownsampleColorImages true ColorImageDownsampleType Bicubic ColorImageResolution 300 ColorImageDepth -1 ColorImageMinDownsampleDepth 1 ColorImageDownsampleThreshold 150000 EncodeColorImages true ColorImageFilter DCTEncode AutoFilterColorImages true ColorImageAutoFilterStrategy JPEG ColorACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt ColorImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000ColorACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000ColorImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasGrayImages false CropGrayImages true GrayImageMinResolution 300 GrayImageMinResolutionPolicy OK DownsampleGrayImages true GrayImageDownsampleType Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA ltFEFF005500740069006c006900730065007a00200063006500730020006f007000740069006f006e00730020006100660069006e00200064006500200063007200e900650072002000640065007300200064006f00630075006d0065006e00740073002000410064006f00620065002000500044004600200070006f0075007200200075006e00650020007100750061006c0069007400e90020006400270069006d007000720065007300730069006f006e00200070007200e9007000720065007300730065002e0020004c0065007300200064006f00630075006d0065006e00740073002000500044004600200063007200e900e90073002000700065007500760065006e0074002000ea0074007200650020006f007500760065007200740073002000640061006e00730020004100630072006f006200610074002c002000610069006e00730069002000710075002700410064006f00620065002000520065006100640065007200200035002e0030002000650074002000760065007200730069006f006e007300200075006c007400e90072006900650075007200650073002egt GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI ltFEFF0049007a006d0061006e0074006f006a00690065007400200161006f00730020006900650073007400610074012b006a0075006d00750073002c0020006c0061006900200076006500690064006f00740075002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006100730020006900720020012b00700061016100690020007000690065006d01130072006f00740069002000610075006700730074006100730020006b00760061006c0069007401010074006500730020007000690072006d007300690065007300700069006501610061006e006100730020006400720075006b00610069002e00200049007a0076006500690064006f006a006900650074002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006f002000760061007200200061007400760113007200740020006100720020004100630072006f00620061007400200075006e002000410064006f00620065002000520065006100640065007200200035002e0030002c0020006b0101002000610072012b00200074006f0020006a00610075006e0101006b0101006d002000760065007200730069006a0101006d002egt NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR ltFEFF004200720075006b00200064006900730073006500200069006e006e007300740069006c006c0069006e00670065006e0065002000740069006c002000e50020006f0070007000720065007400740065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e00740065007200200073006f006d00200065007200200062006500730074002000650067006e0065007400200066006f00720020006600f80072007400720079006b006b0073007500740073006b00720069006600740020006100760020006800f800790020006b00760061006c0069007400650074002e0020005000440046002d0064006f006b0075006d0065006e00740065006e00650020006b0061006e002000e50070006e00650073002000690020004100630072006f00620061007400200065006c006c00650072002000410064006f00620065002000520065006100640065007200200035002e003000200065006c006c00650072002000730065006e006500720065002egt POL 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 PTB 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents 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12 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of separating loadbearing single-leaf walls (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 90 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (100)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 50 70 75 100 115 115

(50) (50) (70) (75) (90) (100)

a le 06 90 100 125 140 140 140

(70) (80) (90) (100) (125) (125)

Dense aggregate 720 le p le 1800

a le 10 100 100 140 140 140 190

(90) (100) (100) (140) (140) (150)

a le 06 90 100 100 140 140 150

(75) (90) (90) (125) (125) (140)

NOTES This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA ltFEFF005500740069006c006900730065007a00200063006500730020006f007000740069006f006e00730020006100660069006e00200064006500200063007200e900650072002000640065007300200064006f00630075006d0065006e00740073002000410064006f00620065002000500044004600200070006f0075007200200075006e00650020007100750061006c0069007400e90020006400270069006d007000720065007300730069006f006e00200070007200e9007000720065007300730065002e0020004c0065007300200064006f00630075006d0065006e00740073002000500044004600200063007200e900e90073002000700065007500760065006e0074002000ea0074007200650020006f007500760065007200740073002000640061006e00730020004100630072006f006200610074002c002000610069006e00730069002000710075002700410064006f00620065002000520065006100640065007200200035002e0030002000650074002000760065007200730069006f006e007300200075006c007400e90072006900650075007200650073002egt GRE 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HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN ltFEFF004b0069007600e1006c00f30020006d0069006e0151007300e9006701710020006e0079006f006d00640061006900200065006c0151006b00e90073007a00ed007401510020006e0079006f006d00740061007400e100730068006f007a0020006c006500670069006e006b00e1006200620020006d0065006700660065006c0065006c0151002000410064006f00620065002000500044004600200064006f006b0075006d0065006e00740075006d006f006b0061007400200065007a0065006b006b0065006c0020006100200062006500e1006c006c00ed007400e10073006f006b006b0061006c0020006b00e90073007a00ed0074006800650074002e0020002000410020006c00e90074007200650068006f007a006f00740074002000500044004600200064006f006b0075006d0065006e00740075006d006f006b00200061007a0020004100630072006f006200610074002000e9007300200061007a002000410064006f00620065002000520065006100640065007200200035002e0030002c0020007600610067007900200061007a002000610074007400f3006c0020006b00e9007301510062006200690020007600650072007a006900f3006b006b0061006c0020006e00790069007400680061007400f3006b0020006d00650067002egt ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH ltFEFF004e006100750064006f006b0069007400650020016100690075006f007300200070006100720061006d006500740072007500730020006e006f0072011700640061006d00690020006b0075007200740069002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b00750072006900650020006c0061006200690061007500730069006100690020007000720069007400610069006b007900740069002000610075006b01610074006f00730020006b006f006b007900620117007300200070006100720065006e006700740069006e00690061006d00200073007000610075007300640069006e0069006d00750069002e0020002000530075006b0075007200740069002000500044004600200064006f006b0075006d0065006e007400610069002000670061006c006900200062016b007400690020006100740069006400610072006f006d00690020004100630072006f006200610074002000690072002000410064006f00620065002000520065006100640065007200200035002e0030002000610072002000760117006c00650073006e0117006d00690073002000760065007200730069006a006f006d00690073002egt LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL ltFEFF0055007300740061007700690065006e0069006100200064006f002000740077006f0072007a0065006e0069006100200064006f006b0075006d0065006e007400f300770020005000440046002000700072007a0065007a006e00610063007a006f006e00790063006800200064006f002000770079006400720075006b00f30077002000770020007700790073006f006b00690065006a0020006a0061006b006f015b00630069002e002000200044006f006b0075006d0065006e0074007900200050004400460020006d006f017c006e00610020006f007400770069006500720061010700200077002000700072006f006700720061006d006900650020004100630072006f00620061007400200069002000410064006f00620065002000520065006100640065007200200035002e0030002000690020006e006f00770073007a0079006d002egt PTB 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 RUM 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 RUS ltFEFF04180441043f043e043b044c04370443043904420435002004340430043d043d044b04350020043d0430044104420440043e0439043a043800200434043b044f00200441043e043704340430043d0438044f00200434043e043a0443043c0435043d0442043e0432002000410064006f006200650020005000440046002c0020043c0430043a04410438043c0430043b044c043d043e0020043f043e04340445043e0434044f04490438044500200434043b044f00200432044b0441043e043a043e043a0430044704350441044204320435043d043d043e0433043e00200434043e043f0435044704300442043d043e0433043e00200432044b0432043e04340430002e002000200421043e043704340430043d043d044b04350020005000440046002d0434043e043a0443043c0435043d0442044b0020043c043e0436043d043e0020043e0442043a0440044b043204300442044c002004410020043f043e043c043e0449044c044e0020004100630072006f00620061007400200438002000410064006f00620065002000520065006100640065007200200035002e00300020043800200431043e043b043504350020043f043e04370434043d043804450020043204350440044104380439002egt SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK 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13 Fire resistance

Table Dense and lightweight aggregate concrete masonry minimum thickness of each leaf of separating loadbearing cavity walls with one leaf loaded (criteria REl) for fire resistance classifications

Material properties gross density p (kgm3)

Minimum wall thickness tF (mm) for fire resistance classification El for time tfid (mins) of

30 60 90 120 180 240

Group 1 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 400 le p le 1700

a le 10 90 90 100 100 140 150

(90) (90) (90) (100) (100) (100)

a le 06 70 75 90 90 100 100

(60) (60) (75) (75) (90) (90)

Dense aggregate 1200 le p le 2400

a le 10 90 90 100 100 140 150

(90) (90) (90) (90) (100) (100)

a le 06 75 75 90 90 100 140

(60) (75) (75) (75) (90) (125)

Group 2 units

Mortar general purpose thin layer lightweight

Lightweight aggregate 240 le p le 1300

a le 10 90 100 100 100 140 150

(90) (90) (90) (100) (140) (140)

a le 06 70 90 90 100 125 140

(70) (70) (70) (90) (100) (125)

Dense aggregate 720 le p le 1800

a le 10 90 100 100 100 140 190

(90) (90) (100) (100) (140) (150)

a le 06 90 100 100 100 140 150

(70) (90) (90) (125) (125) (140)

NOTES The tabulated thicknesses are for the loaded leaves of cavity walls where the loaded leaf is subjected to fire

The non-loaded leaf may be of a dissililar material to the loaded leaf but should otherwise conform to the relevant material specifications In such cases the

respective thickness of each leaf should conform to that specified in the appropriate material table

This table is based on data from NA to EC6 Part 1-2

a lt 06 should be used when the vertical load capacity is only 06 that of the permitted design vertical resistance is being used

a lt 10 should be used when more than o6 of the permitted capacity is being used

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

ltlt ASCII85EncodePages false AllowTransparency false AutoPositionEPSFiles true AutoRotatePages None Binding Left CalGrayProfile (Dot Gain 20) CalRGBProfile (sRGB IEC61966-21) CalCMYKProfile (US Web Coated 050SWOP051 v2) sRGBProfile (sRGB IEC61966-21) CannotEmbedFontPolicy Error CompatibilityLevel 14 CompressObjects Tags CompressPages true ConvertImagesToIndexed true PassThroughJPEGImages true CreateJobTicket false DefaultRenderingIntent Default DetectBlends true DetectCurves 00000 ColorConversionStrategy CMYK DoThumbnails false EmbedAllFonts true EmbedOpenType false ParseICCProfilesInComments true EmbedJobOptions true DSCReportingLevel 0 EmitDSCWarnings false EndPage -1 ImageMemory 1048576 LockDistillerParams false MaxSubsetPct 100 Optimize true OPM 1 ParseDSCComments true ParseDSCCommentsForDocInfo true PreserveCopyPage true PreserveDICMYKValues true PreserveEPSInfo true PreserveFlatness true PreserveHalftoneInfo false PreserveOPIComments true PreserveOverprintSettings true StartPage 1 SubsetFonts true TransferFunctionInfo Apply UCRandBGInfo Preserve UsePrologue false ColorSettingsFile () AlwaysEmbed [ true ] NeverEmbed [ true ] AntiAliasColorImages false CropColorImages true ColorImageMinResolution 300 ColorImageMinResolutionPolicy OK DownsampleColorImages true ColorImageDownsampleType Bicubic ColorImageResolution 300 ColorImageDepth -1 ColorImageMinDownsampleDepth 1 ColorImageDownsampleThreshold 150000 EncodeColorImages true ColorImageFilter DCTEncode AutoFilterColorImages true ColorImageAutoFilterStrategy JPEG ColorACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt ColorImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000ColorACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000ColorImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasGrayImages false CropGrayImages true GrayImageMinResolution 300 GrayImageMinResolutionPolicy OK DownsampleGrayImages true GrayImageDownsampleType Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY ltFEFF0054006900650074006f0020006e006100730074006100760065006e0069006100200070006f0075017e0069007400650020006e00610020007600790074007600e100720061006e0069006500200064006f006b0075006d0065006e0074006f0076002000410064006f006200650020005000440046002c0020006b0074006f007200e90020007300610020006e0061006a006c0065007001610069006500200068006f0064006900610020006e00610020006b00760061006c00690074006e00fa00200074006c0061010d00200061002000700072006500700072006500730073002e00200056007900740076006f00720065006e00e900200064006f006b0075006d0065006e007400790020005000440046002000620075006400650020006d006f017e006e00e90020006f00740076006f00720069016500200076002000700072006f006700720061006d006f006300680020004100630072006f00620061007400200061002000410064006f00620065002000520065006100640065007200200035002e0030002000610020006e006f0076016100ed00630068002egt SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

14 U value summary tables

Description above the table indicates the external leaf NOTE Full fill cavities assume air-gap correction level 0 and cavities gt 100mm

assumes a 50mm2 Stainless steel wall tie 296m2

construction and insulation type Partial Cavity fill assumes a air-gap correction level 1 and cavities gt 100mm

Table indicates insulation thickness and the relevant U value assumes a 50mm2 Stainless steel wall tie 296m2

dependant upon inner leaf block type and internal finish

Full cavity fill

Rendered Masterdenz and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 033 034 038 035 037

85 033 031 033 NA 030 031 034 032 034

100 028 027 028 NA 026 027 029 028 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 020 019 020

Rendered Masterdenz and Standard Dritherm λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 041 038 041 NA 036 039 043 040 042

85 037 035 037 NA 033 035 038 036 038

100 032 031 032 NA 022 023 024 023 024

150 024 023 024 NA 022 023 024 023 024

170 022 022 022 NA 021 022 023 022 023

200 020 019 019 NA 019 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

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Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE ltFEFF03a703c103b703c303b903bc03bf03c003bf03b903ae03c303c403b5002003b103c503c403ad03c2002003c403b903c2002003c103c503b803bc03af03c303b503b903c2002003b303b903b1002003bd03b1002003b403b703bc03b903bf03c503c103b303ae03c303b503c403b5002003ad03b303b303c103b103c603b1002000410064006f006200650020005000440046002003c003bf03c5002003b503af03bd03b103b9002003ba03b103c42019002003b503be03bf03c703ae03bd002003ba03b103c403ac03bb03bb03b703bb03b1002003b303b903b1002003c003c103bf002d03b503ba03c403c503c003c903c403b903ba03ad03c2002003b503c103b303b103c303af03b503c2002003c503c803b703bb03ae03c2002003c003bf03b903cc03c403b703c403b103c2002e0020002003a403b10020005000440046002003ad03b303b303c103b103c603b1002003c003bf03c5002003ad03c703b503c403b5002003b403b703bc03b903bf03c503c103b303ae03c303b503b9002003bc03c003bf03c103bf03cd03bd002003bd03b1002003b103bd03bf03b903c703c403bf03cd03bd002003bc03b5002003c403bf0020004100630072006f006200610074002c002003c403bf002000410064006f00620065002000520065006100640065007200200035002e0030002003ba03b103b9002003bc03b503c403b103b303b503bd03ad03c303c403b503c103b503c2002003b503ba03b403cc03c303b503b903c2002egt HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR ltFEFF004200720075006b00200064006900730073006500200069006e006e007300740069006c006c0069006e00670065006e0065002000740069006c002000e50020006f0070007000720065007400740065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e00740065007200200073006f006d00200065007200200062006500730074002000650067006e0065007400200066006f00720020006600f80072007400720079006b006b0073007500740073006b00720069006600740020006100760020006800f800790020006b00760061006c0069007400650074002e0020005000440046002d0064006f006b0075006d0065006e00740065006e00650020006b0061006e002000e50070006e00650073002000690020004100630072006f00620061007400200065006c006c00650072002000410064006f00620065002000520065006100640065007200200035002e003000200065006c006c00650072002000730065006e006500720065002egt POL ltFEFF0055007300740061007700690065006e0069006100200064006f002000740077006f0072007a0065006e0069006100200064006f006b0075006d0065006e007400f300770020005000440046002000700072007a0065007a006e00610063007a006f006e00790063006800200064006f002000770079006400720075006b00f30077002000770020007700790073006f006b00690065006a0020006a0061006b006f015b00630069002e002000200044006f006b0075006d0065006e0074007900200050004400460020006d006f017c006e00610020006f007400770069006500720061010700200077002000700072006f006700720061006d006900650020004100630072006f00620061007400200069002000410064006f00620065002000520065006100640065007200200035002e0030002000690020006e006f00770073007a0079006d002egt PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

15 U value summary tables

Brick and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 036 034 036 NA 032 034 037 035 037

85 032 031 032 NA 029 031 033 031 033

100 028 027 028 NA 026 027 029 027 029

115 026 025 026 NA 024 025 027 026 027

130 024 023 023 NA 022 023 024 023 024

150 021 020 021 NA 020 020 021 021 021

175 019 019 019 NA 018 019 019 019 019

Brick and Dritherm Standard λ 0037

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 040 038 040 NA 036 038 042 039 042

85 036 034 036 NA 033 034 038 035 037

100 032 030 032 NA 029 030 033 031 033

150 024 023 024 NA 022 023 024 023 024

170 022 021 022 NA 021 022 022 022 022

200 019 019 019 NA 019 019 020 019 020

Bradstone range and Dritherm 32

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

85 033 031 033 NA 030 031 034 032 034

100 029 027 029 NA 026 027 029 028 029

115 027 025 026 NA 025 026 027 026 027

130 024 023 024 NA 022 023 024 023 024

150 021 021 021 NA 020 021 022 021 021

175 019 019 019 NA 019 019 020 019 020

200 017 017 017 NA 017 017 018 017 018

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP ltFEFF005500740069006c0069006300650020006500730074006100200063006f006e0066006900670075007200610063006900f3006e0020007000610072006100200063007200650061007200200064006f00630075006d0065006e0074006f00730020005000440046002000640065002000410064006f0062006500200061006400650063007500610064006f00730020007000610072006100200069006d0070007200650073006900f3006e0020007000720065002d0065006400690074006f007200690061006c00200064006500200061006c00740061002000630061006c0069006400610064002e002000530065002000700075006500640065006e00200061006200720069007200200064006f00630075006d0065006e0074006f00730020005000440046002000630072006500610064006f007300200063006f006e0020004100630072006f006200610074002c002000410064006f00620065002000520065006100640065007200200035002e003000200079002000760065007200730069006f006e0065007300200070006f00730074006500720069006f007200650073002egt ETI ltFEFF004b00610073007500740061006700650020006e0065006900640020007300e4007400740065006900640020006b00760061006c006900740065006500740073006500200074007200fc006b006900650065006c007300650020007000720069006e00740069006d0069007300650020006a0061006f006b007300200073006f00620069006c0069006b0065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e00740069006400650020006c006f006f006d006900730065006b0073002e00200020004c006f006f0064007500640020005000440046002d0064006f006b0075006d0065006e00740065002000730061006100740065002000610076006100640061002000700072006f006700720061006d006d006900640065006700610020004100630072006f0062006100740020006e0069006e0067002000410064006f00620065002000520065006100640065007200200035002e00300020006a00610020007500750065006d006100740065002000760065007200730069006f006f006e00690064006500670061002e000d000agt FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM ltFEFF005500740069006c0069007a00610163006900200061006300650073007400650020007300650074010300720069002000700065006e007400720075002000610020006300720065006100200064006f00630075006d0065006e00740065002000410064006f006200650020005000440046002000610064006500630076006100740065002000700065006e0074007200750020007400690070010300720069007200650061002000700072006500700072006500730073002000640065002000630061006c006900740061007400650020007300750070006500720069006f006100720103002e002000200044006f00630075006d0065006e00740065006c00650020005000440046002000630072006500610074006500200070006f00740020006600690020006400650073006300680069007300650020006300750020004100630072006f006200610074002c002000410064006f00620065002000520065006100640065007200200035002e00300020015f00690020007600650072007300690075006e0069006c006500200075006c0074006500720069006f006100720065002egt RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

16 U value summary tables

Bradstone range and Xtratherm Cavity Therm

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

75 026 025 026 NA 024 025 027 026 027

100 020 020 020 NA 019 020 021 020 020

Partial cavity fill

Rendered Masterdenz and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 037 035 037 NA 033 035 038 036 038

45 032 031 032 NA 029 031 033 031 033

50 030 029 030 NA 027 029 031 029 031

55 029 028 027 NA 027 028 030 029 030

60 028 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 027

75 023 022 023 NA 021 022 023 022 023

100 019 018 019 NA 018 018 019 018 019

Rendered Masterdenz and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 025 NA 023 024 025 024 025

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV ltFEFF005400650020006e006100730074006100760069007400760065002000750070006f0072006100620069007400650020007a00610020007500730074007600610072006a0061006e006a006500200064006f006b0075006d0065006e0074006f0076002000410064006f006200650020005000440046002c0020006b006900200073006f0020006e0061006a007000720069006d00650072006e0065006a016100690020007a00610020006b0061006b006f0076006f00730074006e006f0020007400690073006b0061006e006a00650020007300200070007200690070007200610076006f0020006e00610020007400690073006b002e00200020005500730074007600610072006a0065006e006500200064006f006b0075006d0065006e0074006500200050004400460020006a00650020006d006f0067006f010d00650020006f0064007000720065007400690020007a0020004100630072006f00620061007400200069006e002000410064006f00620065002000520065006100640065007200200035002e003000200069006e0020006e006f00760065006a01610069006d002egt SUO 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 SVE ltFEFF0041006e007600e4006e00640020006400650020006800e4007200200069006e0073007400e4006c006c006e0069006e006700610072006e00610020006f006d002000640075002000760069006c006c00200073006b006100700061002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e007400200073006f006d002000e400720020006c00e4006d0070006c0069006700610020006600f60072002000700072006500700072006500730073002d007500740073006b00720069006600740020006d006500640020006800f600670020006b00760061006c0069007400650074002e002000200053006b006100700061006400650020005000440046002d0064006f006b0075006d0065006e00740020006b0061006e002000f600700070006e00610073002000690020004100630072006f0062006100740020006f00630068002000410064006f00620065002000520065006100640065007200200035002e00300020006f00630068002000730065006e006100720065002egt TUR 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 UKR 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can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

17 U value summary tables

Brick and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

40 036 034 036 NA 032 034 037 035 037

45 032 030 032 NA 029 030 033 031 033

50 030 028 030 NA 027 028 030 029 030

55 029 028 029 NA 027 028 030 028 029

60 027 026 027 NA 025 026 028 027 028

65 026 025 026 NA 024 025 027 026 026

75 023 022 023 NA 021 022 023 022 023

100 019 018 018 NA 018 018 019 018 019

Brick and Xtratherm Thin R Plus

Insulation Masterlite Pro Masterlite Ultra Masterdenz

thickness PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 029 028 029 NA 027 028 030 029 030

60 027 026 027 NA 025 026 028 027 028

70 025 024 024 NA 023 024 025 024 025

Bradstone range and Kingspan K8

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

45 033 031 032 NA 029 031 034 032 033

50 030 029 030 NA 028 029 031 029 031

55 029 028 029 NA 027 028 030 029 030

60 028 027 028 NA 026 027 028 027 028

65 026 025 026 NA 025 026 027 026 027

75 023 022 023 NA 022 022 023 023 023

100 019 018 019 NA 018 018 019 018 019

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

18 U value summary tables

Bradstone range and Xtratherm Thin R Plus

Insulation thickness

Masterlite Pro Masterlite Ultra Masterdenz

PG P on D Plaster PG P on D Plaster PG P on D Plaster

50 030 028 030 NA 027 029 031 039 031

60 028 026 028 NA 026 027 038 027 028

70 025 024 025 NA 023 024 025 024 025

75 024 023 024 NA 022 023 024 023 024

80 023 022 023 NA 021 022 023 022 023

100 019 019 019 NA 018 019 020 019 020

NOTES

PG = Paint grade

P on D = Plasterboard on dabs

Plaster = Sand cement

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 DEU 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 ESP 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 ETI 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HEB 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HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

19 Thermal 2010

The revised Conservation of Fuel and Power regulations for England and Wales and the approved documents

L1A (New Dwellings)

L1B (Existing Dwellings)

L2A (New non Dwellings)

L2B (Existing non Dwellings)

Came into effect on 1st October 2010 the key changes are as follows (ADL1A)

bull 25 reduction of the buildings CO2 output in relation to the 2006 regulations in addition to the loss taken into account by the party wall

bull Separating wallparty wall heat loss to be taken into account (see table)

bull Importance of linear bridging becoming of greater importance note each linear thermal bridge has now to be taken into account the use of a default y of 008 Wm2

when using accredited construction details is no longer allowed (See table K1 for appropriate psi values when using accredited construction details) Unless values are provided by a government approved Accredited Details Scheme the psi value should be degraded by either 25 or 002WmK which ever is the greater

bull Air permeability testing requirement increased and lower values are required however backstop remains at 10m3 hourm2 50 pascals Note if the dwelling has not been tested a confidence factor of + 20m3 similar in principal to that required in psi values has to be applied therefore a target 80 has to be achieved

bull A minimum 75 low energy light fittings must be installed extra will contribute to the TER

bull Assumption of 10 of heating is provided by a secondary heating appliance has been withdrawn unless a chimney or flue and no appliance is installed

Tables 1 and 2 below show indicative element values required to meet the 25 CO2 reduction requirements however trade-offs can be made between different elements to achieve the required DER figure

Tables 7 to 10 give indicative wall U value based upon different constructions and insulant types

Tables 1 and 2

The Tables below show indicative details required to meet the relevant approved documents

Table 1

Domestic building specifications - Flat 25 option

Detached Semi detached Mid terrace Electric flat

Roof (U-value) 018 018 019 016

Walls (U-value) 023 024 023 018

Party walls (U-value) NA 000 000 000

Floor (U-Value) 021 021 021 019

Windows and door (U-value) 17 17 16 13

Gas boilers (seasonal efficiency) 90 90 90 NA

Electric heat emitters (seasonal efficiency) NA NA NA 100

Secondary heating None None None NA

Air permeability (m3hm-2) 5 5 5 5

Thermal bridging (y) 004 004 004 004

Hot water cylinder insulation (mm) 100 100 100 100

Ventilation system Natural Natural Natural Natural

Lighting - CFLs 100 100 100 100

20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA ltFEFF005500740069006c006900730065007a00200063006500730020006f007000740069006f006e00730020006100660069006e00200064006500200063007200e900650072002000640065007300200064006f00630075006d0065006e00740073002000410064006f00620065002000500044004600200070006f0075007200200075006e00650020007100750061006c0069007400e90020006400270069006d007000720065007300730069006f006e00200070007200e9007000720065007300730065002e0020004c0065007300200064006f00630075006d0065006e00740073002000500044004600200063007200e900e90073002000700065007500760065006e0074002000ea0074007200650020006f007500760065007200740073002000640061006e00730020004100630072006f006200610074002c002000610069006e00730069002000710075002700410064006f00620065002000520065006100640065007200200035002e0030002000650074002000760065007200730069006f006e007300200075006c007400e90072006900650075007200650073002egt GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents 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20 Thermal 2010

Table 2

Specifications for aggregate 25 approach - non-domestic building

ldquoRoof-litrdquo ldquoSide-litrdquo

Roofs (U-value) 018 018

Walls (U-value) 026 026

Floors (U-value) 022 022

Windows doors and rooflights (U-value) 18 18

Air permeability 5 5

Lighting (ImW) 55 55

Multiburner radiant system (thermalradiant efficiency) 8665 -

Central mechanical ventilation (SFP) 18 18

Fan coil units (SFP) - 05

Gas boilers (seasonal efficiency) 90 88

Cooling (SEER) 45 45

DX Cooling (SEER) - 35

Values of yen (psi) for different types of junctions conforming with Accredited Construction Details

Junction detail yen (WmK)

Junctions with an external wall

Steel lintel with perforated steel base plate 050

Other lintels (including other steel lintels) 030

Sill 004

Jamb 005

Ground floor 016

Intermediate floor within a dwelling 007

Intermediate floor between dwellings (in blocks of flats) a) 007

Balcony within a dwelling b) 000

Balcony between dwellings a) b) 002

Eaves (insulation at ceiling level) 006

Eaves (insulation at rafter level) 004

Gable (insulation at ceiling level) 024

Gable (insulation at rafter level) 004

Flat roof 004

Flat roof with parapet 028

Corner (normal) 009

Corner (inverted - internal area greater than external area -009

Party wall between dwellings a) 006

Junctions with a party wall a)

Ground floor 008

Intermediate floor within a dwelling 000

Intermediate floor between dwellings (in blocks of flats) 000

Roof (insulation at ceiling level) 012

Roof (insulation at rafter level) 002

The table (left) gives the relevant psi values to be used when calculating the relevant linear thermal bridging when using the Accredited Construction details available from wwwplanningportalgovukengland professionalsen1115314255826

a) Value of yen is applied to each dwelling

b) This is an externally supported balcony (the balcony slab is not a continuation of the floor slab) where the wall insulation is contiuous and not bridged by the balcony slab

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

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Email aggregatesaggregatecom

Asphalt

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Tel 0844 557 8396

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Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

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Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

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Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 ESP 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HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE ltFEFF0041006e007600e4006e00640020006400650020006800e4007200200069006e0073007400e4006c006c006e0069006e006700610072006e00610020006f006d002000640075002000760069006c006c00200073006b006100700061002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e007400200073006f006d002000e400720020006c00e4006d0070006c0069006700610020006600f60072002000700072006500700072006500730073002d007500740073006b00720069006600740020006d006500640020006800f600670020006b00760061006c0069007400650074002e002000200053006b006100700061006400650020005000440046002d0064006f006b0075006d0065006e00740020006b0061006e002000f600700070006e00610073002000690020004100630072006f0062006100740020006f00630068002000410064006f00620065002000520065006100640065007200200035002e00300020006f00630068002000730065006e006100720065002egt TUR ltFEFF005900fc006b00730065006b0020006b0061006c006900740065006c0069002000f6006e002000790061007a006401310072006d00610020006200610073006b013100730131006e006100200065006e0020006900790069002000750079006100620069006c006500630065006b002000410064006f006200650020005000440046002000620065006c00670065006c0065007200690020006f006c0075015f007400750072006d0061006b0020006900e70069006e00200062007500200061007900610072006c0061007201310020006b0075006c006c0061006e0131006e002e00200020004f006c0075015f0074007500720075006c0061006e0020005000440046002000620065006c00670065006c0065007200690020004100630072006f006200610074002000760065002000410064006f00620065002000520065006100640065007200200035002e003000200076006500200073006f006e0072006100730131006e00640061006b00690020007300fc007200fc006d006c00650072006c00650020006100e70131006c006100620069006c00690072002egt UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

21 Thermal 2010

Compliance to satisfy Part L can be demonstrated by following five criteria as shown The appropriate Approved Document provides guidance and procedures for satisfying each of the criteria

Demonstrating complicance

Dwellings Buildings other than dwellings

Criterion 1 The calculated rate of CO2 emissions from the dwelling (the Dwelling Emission Rate DER) must not be greater than the Target Emission Rate (TER)

The calculated CO2 emission rate for the building (the Building Emmission Rate BER) must not be greater than the Target CO2 emission rate (TER)

Criterion 2 The performance of the building fabric and the fixed building services should achieve reasonable overall standards of energy efficiency following procedures given in the Approved Document (See lsquoLimits on Design Flexibilityrsquo)

The performance of the building fabric and the heating hot water and fixed lighting systems should achieve reasonable overall standards of energy efficiency

Criterion 3 The dwelling should have appropriate passive control measures to limit the effect of solar gains on indoor temperatures in summer irrespective of whether or not the dwelling has mechanical cooling

Demonstrate that the building has appropriate passive control measures to limit solar gains

Criterion 4 The performance of the dwelling as built should be consistent with the DER

The performance of the building as built should be consistent with the BER

Criterion 5 The necessary provisions for energy efficient operation of the dwelling should be put in place

The necessary provisions for enabling energy-efficient operation of the building should be put in place

For design purposes the limiting U-values shown should not be exceeded The values stated are area-weighted average values for all elements of that type In practice the envelope standards would need to be considerably better than the limiting values

Limits on design flexibility - limiting fabric parameters

Element Dwellings Buildings other than dwelllings

Roof 020 Wm2K 025 Wm2K

Wall 030 Wm2K 035 Wm2K

Floor 025 Wm2K 025 Wm2K

Party wall 020 Wm2K -

Windows roof windows glazed roof lights curtain walling and pedestrian doors

200 Wm2K 22 Wm2K

Vehicle access and similar large doors - 15 Wm2K

High-usage entrance doors - 35 Wm2K

Roof ventilators (inc smoke vents) - 35 Wm2K

Air permeability 1000m3hm2 at 50 Pa 1000m3hm2 at 50 Pa

22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI ltFEFF004b00610073007500740061006700650020006e0065006900640020007300e4007400740065006900640020006b00760061006c006900740065006500740073006500200074007200fc006b006900650065006c007300650020007000720069006e00740069006d0069007300650020006a0061006f006b007300200073006f00620069006c0069006b0065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e00740069006400650020006c006f006f006d006900730065006b0073002e00200020004c006f006f0064007500640020005000440046002d0064006f006b0075006d0065006e00740065002000730061006100740065002000610076006100640061002000700072006f006700720061006d006d006900640065006700610020004100630072006f0062006100740020006e0069006e0067002000410064006f00620065002000520065006100640065007200200035002e00300020006a00610020007500750065006d006100740065002000760065007200730069006f006f006e00690064006500670061002e000d000agt FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI ltFEFF0049007a006d0061006e0074006f006a00690065007400200161006f00730020006900650073007400610074012b006a0075006d00750073002c0020006c0061006900200076006500690064006f00740075002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006100730020006900720020012b00700061016100690020007000690065006d01130072006f00740069002000610075006700730074006100730020006b00760061006c0069007401010074006500730020007000690072006d007300690065007300700069006501610061006e006100730020006400720075006b00610069002e00200049007a0076006500690064006f006a006900650074002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006f002000760061007200200061007400760113007200740020006100720020004100630072006f00620061007400200075006e002000410064006f00620065002000520065006100640065007200200035002e0030002c0020006b0101002000610072012b00200074006f0020006a00610075006e0101006b0101006d002000760065007200730069006a0101006d002egt NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB ltFEFF005500740069006c0069007a006500200065007300730061007300200063006f006e00660069006700750072006100e700f50065007300200064006500200066006f0072006d00610020006100200063007200690061007200200064006f00630075006d0065006e0074006f0073002000410064006f0062006500200050004400460020006d00610069007300200061006400650071007500610064006f00730020007000610072006100200070007200e9002d0069006d0070007200650073007300f50065007300200064006500200061006c007400610020007100750061006c00690064006100640065002e0020004f007300200064006f00630075006d0065006e0074006f00730020005000440046002000630072006900610064006f007300200070006f00640065006d0020007300650072002000610062006500720074006f007300200063006f006d0020006f0020004100630072006f006200610074002000650020006f002000410064006f00620065002000520065006100640065007200200035002e0030002000650020007600650072007300f50065007300200070006f00730074006500720069006f007200650073002egt RUM 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 RUS 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22 Thermal 2010

U-Values for party walls

Party wall construction U-value (Wm2K)

Solid eg Masterdenz RD 00

Unfilled cavity with no effective edge sealing 05

Unfilled cavity with effective sealing around all exposed edges and in line with insulation layers in abutting elements 02

A fully filled cavity with effective sealing at all exposed edges and in line with insulation layers in abutting elements 00

L1B (New extensions)

Wall to be 028 wm2K area weighted or better or use SAP for compliance Glazing up to 25 of the floor area without further proof of compliance

L2A (New non dwellings)

BER (Building Emission Rate) to be no worse than TER building fabric backstop limits

Wall 035Wm2K

Air Permeability 10m3m2h50pascals

L2B (Extensions)

Wall to be 028Wm2K area weighted or better

23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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23 Precast concrete products

1 Identification of the substance

Concrete blocks lintels walling products roofing slates architectural dressings and bricks

2 Compositioninformation on ingredients

Precast concrete products are manufactured from a mix of raw materials including

bull Sand and gravel aggregates

bull Pulverised fuel ash (PFA)

bull Cement

bull Limestone dust

bull Crushed rock

bull Inert pigments

3 Hazards identification

There is a potential for respirable dust including an element of respirable crystalline silica (quartz) to be released if the product is drilled cut sawn crushed or accidentally broken up This could pose a health hazard if inhaled over a prolonged period of time

Concrete products and dust particles can also cause abrasion or irritation to skin and eyes

The weight of the product could pose a health hazard if inappropriate manual handling techniques are employed

For further guidance see HSE Publications EH44 Dust General Principles of Protection Getting to Grips with Manual Handling a Short Guide and Information Sheet Number 26 (Revision 2) - Cement

4 First aid measures

General

Unlikely to be hazardous if handled correctly

Inhalation

Remove to a dust free area and seek medical attention if breathing difficulties are experienced

Skin

Wash with soap and water If prolonged contact causes irritation seek medical attention

Eyes

Irrigate with plenty of water and seek medical attention if soreness continues

Ingestion

5 Fire fighting measures

No fire or explosive hazard

6 Accidental release measures

Personal precautions

Wear a dust mask or respirator

Environmental measures

No precautions required

Method of cleaning

If possible avoid dry sweeping which generates dust Vacuum dust where practical

7 Handling and storage

Handling

The product should be handled in a manner that will minimise the generation of airborne dust

Manual handling of the product should be avoided so far as is reasonably practical Where this is not possible an assessment should be made taking into account the load environment task and individual capability and training Always employ good lifting techniques

Storage

No restrictions

8 Exposure controlspersonal protection

Workplace Exposure limits

bull Total Inhalable Nuisance Dust 100 mgm3 (WEL)

bull Total Respirable Nuisance Dust 40 mgm3 (WEL)

bull Respirable Crystalline Silica 01 mgm3 (WEL)

All are given as maximum concentrations and expressed as an 8 Hour Time Weighted Average (8 Hr TWA)

Prevention measures

Use dust extraction and containment where possible

Respiratory protection

Dust masks or respirators should be worn during handling and use of the product to accord with the relevant WEL listed above particularly during drilling cutting and sawing activities

Protection of skin and eyes

Gloves or barrier cream overalls and goggles should be worn during handling and use of the product

Give water to drink and seek medical advice

24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 DAN 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 DEU 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 ESP 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 ETI ltFEFF004b00610073007500740061006700650020006e0065006900640020007300e4007400740065006900640020006b00760061006c006900740065006500740073006500200074007200fc006b006900650065006c007300650020007000720069006e00740069006d0069007300650020006a0061006f006b007300200073006f00620069006c0069006b0065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e00740069006400650020006c006f006f006d006900730065006b0073002e00200020004c006f006f0064007500640020005000440046002d0064006f006b0075006d0065006e00740065002000730061006100740065002000610076006100640061002000700072006f006700720061006d006d006900640065006700610020004100630072006f0062006100740020006e0069006e0067002000410064006f00620065002000520065006100640065007200200035002e00300020006a00610020007500750065006d006100740065002000760065007200730069006f006f006e00690064006500670061002e000d000agt FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS ltFEFF04180441043f043e043b044c04370443043904420435002004340430043d043d044b04350020043d0430044104420440043e0439043a043800200434043b044f00200441043e043704340430043d0438044f00200434043e043a0443043c0435043d0442043e0432002000410064006f006200650020005000440046002c0020043c0430043a04410438043c0430043b044c043d043e0020043f043e04340445043e0434044f04490438044500200434043b044f00200432044b0441043e043a043e043a0430044704350441044204320435043d043d043e0433043e00200434043e043f0435044704300442043d043e0433043e00200432044b0432043e04340430002e002000200421043e043704340430043d043d044b04350020005000440046002d0434043e043a0443043c0435043d0442044b0020043c043e0436043d043e0020043e0442043a0440044b043204300442044c002004410020043f043e043c043e0449044c044e0020004100630072006f00620061007400200438002000410064006f00620065002000520065006100640065007200200035002e00300020043800200431043e043b043504350020043f043e04370434043d043804450020043204350440044104380439002egt SKY 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 SLV 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 SUO 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24 Precast concrete products

9 Physical chemical properties

Appearance

Precast concrete products in a range of colours sizes and finishes

Other chemical properties

Not applicable worn during handling and use of the product

10 Stability and reactivity

Conditions and materials to avoid

Not applicable

11 Toxicological information

Natural aggregates contain a wide range of particle types and the behaviour deposition fate of and response to any particular particle after entry into the human respiratory system depends on their nature and size

Respirable dust approximates to the fraction that penetrates to the gas exchange region of the lung and is associated with health effects

12 Ecological information

No environmental hazard

13 Disposal considerations

Handling of any residueswaste products

As an inert material an approved solid waste disposal or landfill site may be used Do not burn shrink wrap or other packaging material

14 Transport information

Special carriage precautions

Not applicable

15 Regulatory information

Not classified

The following risk and safety phrases are however recommended

bull R4820 Harmful danger of serious damage to health by prolonged exposure through inhalation

bull S22 Do not breathe dust

16 Other information

Training advice

Wear and use PPE

Employ good manual handling techniques

Recommended uses

Industrial domestic and public works

Further information sources

Aggregate Industries UK Limited Hulland Ward Ashbourne Derbyshire DE6 3ET

Tel (01335) 372222 Fax (01335) 372223

Sources of key data used to compile data sheet

EH40 2005 Workplace Exposure Limits (supplementary amendment 01 October 2006)

PPE Regulations 1992

Manual Handling Regulations 1992 (as amended)

COSHH Regulations 2002 (as amended)

COSHH (Amendment) Regulations 2004

Legal notice

The information contained in this Safety Data Sheet was considered the best available at the date of issue However no warranty is made or implied that the information is accurate or complete It is the users obligation to evaluate and use this product safely and to comply with all applicable laws and regulations

25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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HEB 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25 Structural stability of non load-bearing panels

The following tables are based upon BS EN 1996 11 walls subject to lateral loads only

All walls are assumed to be a minimum 100mm thick and in the case of cavity walls one leaf of the cavity wall has to be at least 100mm thick

Panels with lateral restraint top and bottom only

Panels with lateral restraint on all four ages

The wall thickness t in the case of a single leaf wall should be taken as the block thickness in the case of a cavity wall this should be taken as the effective thickness tef which should be calculated as below

tef = 3 t13 + t2

3 using the UK National Annex

NOTE Walls quoted as 94mm thick are based upon non-loadbearing partition

walls in accordance with BS 5628 pt 3

Block thickness (mm)

94 100 140 190 219

Maximum wall height (metres) 28 30 42 57 645

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

28 84 80 112 152 172

30 84 80 112 152 172

42 48 49 112 152 172

57 43 46 686 152 172

64 41 43 673 114 172

70 39 42 658 1083 1376

80 36 40 644 912 1118

90 32 37 60 90 105

100 29 35 57 89 103

110 28 32 55 86 100

120 30 53 82 97

130 50 80 94

140 48 78 90

150 45 76 88

160 43 73 86

170 42 70 84

180 67 83

190 65 81

200 62 78

210 59 75

220 57 73

230 70

240 68

250 66

260 64

26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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26 Structural stability of non load-bearing panels

Panels with lateral restraint top bottom and one vertical edge

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

10 28 70 98 133 150

20 28 70 98 133 150

30 28 60 95 133 150

40 28 50 85 130 150

50 28 40 75 119 142

60 28 30 65 110 133

70 28 30 55 100 123

80 28 30 45 90 115

90 28 30 42 80 103

100 28 30 42 70 93

110 28 30 42 60 83

120 42 57 73

130 42 57 64

42 57 64

Panels with lateral restraint bottom and two sides

Block thickness (mm)

Wall length (metres) 94 100 140 190 215

30 80 80 112 152 172

40 45 80 112 152 172

50 25 33 112 152 172

60 14 19 73 152 172

70 14 18 46 152 172

80 14 18 27 103 172

90 14 17 26 76 118

100 NA 16 25 50 91

110 15 25 37 64

120 15 24 37 43

130 NA 23 35 41

140 23 35 40

150 22 34 39

160 21 33 39

170 NA 32 38

180 31 37

190 31 36

200 30 36

210 29 35

220 28 35

230 NA 34

240 33

250 32

260 NA

27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 ETI 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 FRA 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 GRE ltFEFF03a703c103b703c303b903bc03bf03c003bf03b903ae03c303c403b5002003b103c503c403ad03c2002003c403b903c2002003c103c503b803bc03af03c303b503b903c2002003b303b903b1002003bd03b1002003b403b703bc03b903bf03c503c103b303ae03c303b503c403b5002003ad03b303b303c103b103c603b1002000410064006f006200650020005000440046002003c003bf03c5002003b503af03bd03b103b9002003ba03b103c42019002003b503be03bf03c703ae03bd002003ba03b103c403ac03bb03bb03b703bb03b1002003b303b903b1002003c003c103bf002d03b503ba03c403c503c003c903c403b903ba03ad03c2002003b503c103b303b103c303af03b503c2002003c503c803b703bb03ae03c2002003c003bf03b903cc03c403b703c403b103c2002e0020002003a403b10020005000440046002003ad03b303b303c103b103c603b1002003c003bf03c5002003ad03c703b503c403b5002003b403b703bc03b903bf03c503c103b303ae03c303b503b9002003bc03c003bf03c103bf03cd03bd002003bd03b1002003b103bd03bf03b903c703c403bf03cd03bd002003bc03b5002003c403bf0020004100630072006f006200610074002c002003c403bf002000410064006f00620065002000520065006100640065007200200035002e0030002003ba03b103b9002003bc03b503c403b103b303b503bd03ad03c303c403b503c103b503c2002003b503ba03b403cc03c303b503b903c2002egt HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB ltFEFF005500740069006c0069007a006500200065007300730061007300200063006f006e00660069006700750072006100e700f50065007300200064006500200066006f0072006d00610020006100200063007200690061007200200064006f00630075006d0065006e0074006f0073002000410064006f0062006500200050004400460020006d00610069007300200061006400650071007500610064006f00730020007000610072006100200070007200e9002d0069006d0070007200650073007300f50065007300200064006500200061006c007400610020007100750061006c00690064006100640065002e0020004f007300200064006f00630075006d0065006e0074006f00730020005000440046002000630072006900610064006f007300200070006f00640065006d0020007300650072002000610062006500720074006f007300200063006f006d0020006f0020004100630072006f006200610074002000650020006f002000410064006f00620065002000520065006100640065007200200035002e0030002000650020007600650072007300f50065007300200070006f00730074006500720069006f007200650073002egt RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents 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27 Structural stability of non load-bearing panels

The tables below give the maximum sizes of chases and recesses which are permitted in masonry without further calculation as permitted in the UK national Annex to BS EN 1996-1-1

The maximum depth of chasesrecesses in hollow and cellular blocks should not be in-excess of half the shell thickness of the unit unless verified by calculation

Sizes of horizontal and inclined chases in masonry allowed without calculation

Thickness of wall t (mm) Maximum depth tchh (mm)

Unlimited length lch Length lch le 1250mm

75 - 84 0 0

85 - 115 0 0

116 - 175 0 15

176 - 225 10 20

226 - 300 15 25

over 300 20 30

NOTES

a) The maximum depth of the chase should include the

depth of any hole reached when forming the chase

b) The horizontal distance between the end of a chase

and an opening should not be less than 500mm

c) The horizontal distance between adjacent chases of

limited length whether they occur on the same side

or on opposite sides of the wall should be not less

than twice the length of the longest chase

d) In walls of thickness greater than 115mm the

permitted depth of the chase may be increased by

10mm if the chase is nmachine cut accurately to the

required depth If machine cuts are used chases up

to 10mm deep may be cut in both sides of walls of

thickness not less than 225mm

e) The width of chase should not exceed the residual

thickness of the wall

f) This table is based on data from NA to EC6 Part 1-1

t Wall elevation

X

X

cht

Wc

ttchh r

X-X

Wall elevation

Wc NOTES

trW le (see above)c 2 a For walls thicker than 175mm tchh may be

increased by 10mm if accurate machine

cutting is used

b Horizontal chases should be positioned within

one eighth of the clear height of the wall

(above or below a floor)

c The rules for horizontal chases also apply to

Chases may be on opposite faces of wall inclined chases

Edge of

opening

ch1t

ch Max

ch2t

MinMin 500 2 x t

Fig 63 Horizontal and inclined chases in loading masonry walls - limitations (read with table 62)

28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS ltFEFF04180441043f043e043b044c04370443043904420435002004340430043d043d044b04350020043d0430044104420440043e0439043a043800200434043b044f00200441043e043704340430043d0438044f00200434043e043a0443043c0435043d0442043e0432002000410064006f006200650020005000440046002c0020043c0430043a04410438043c0430043b044c043d043e0020043f043e04340445043e0434044f04490438044500200434043b044f00200432044b0441043e043a043e043a0430044704350441044204320435043d043d043e0433043e00200434043e043f0435044704300442043d043e0433043e00200432044b0432043e04340430002e002000200421043e043704340430043d043d044b04350020005000440046002d0434043e043a0443043c0435043d0442044b0020043c043e0436043d043e0020043e0442043a0440044b043204300442044c002004410020043f043e043c043e0449044c044e0020004100630072006f00620061007400200438002000410064006f00620065002000520065006100640065007200200035002e00300020043800200431043e043b043504350020043f043e04370434043d043804450020043204350440044104380439002egt SKY 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28 Structural stability of non load-bearing panels

Sizes of vertical chases and recesses in masonry allowed without calculation

Chases and recesses formed after construction of masonry

Chases and recesses formed during construction of masonry

Thickness of wall t (mm) max depth tchh (mm) max width Wc (mm) minimum wall thickness remaining tr (mm)

max width Wc (mm)

75 - 89 30 75 60 300

90 - 115 30 100 70 300

116 - 175 30 125 90 300

176 - 225 30 150 140 300

226 - 300 30 175 175 300

gt 300 30 200 215 300

NOTES

a) The maximum depth of the chase should include the depth of any hole reached when forming the chase

b) Vertical chases that do not extend more than one third of the storey height above floor level may have a depth of up to 80mm and a width of up to 120mm if the

thickness of the wall is 225mm or more

c) The horizontal distance between adjacent chases or between a chase and recess or an opening should not be less than 225mm

d) The horizontal distance beteen any two adjacent recesses whether they occur on the same side or on opposite sides of the wall or between a recess and an

opening should not be less than twice the width of the wider of the two recesses

e) The cumulative width of vertical chases and recesses should not exceed 013 times the length of the wall

f) This table is based on data from NA to EC6 Part 1-1

Formed after construction Formed during construction

t t tr tch v

le 30mm

Wc le 300mm Plan Plan

Chases on eitherSpacing of chases

t Edge of

opening

side of wall

gt225gt225 or gt2 xWc1 Wc2Wc whichever is greater Plan

Chases in bottom section of wall in walls ge 225mm thick

h

Max

120

Max 80

XX h

2 le

X-X Wall elevation NOTE The cumulative width of vertical chases le 013 times length of wall

Fig 62 Vertical chases in loadbearing masonry

29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

ltlt ASCII85EncodePages false AllowTransparency false AutoPositionEPSFiles true AutoRotatePages None Binding Left CalGrayProfile (Dot Gain 20) CalRGBProfile (sRGB IEC61966-21) CalCMYKProfile (US Web Coated 050SWOP051 v2) sRGBProfile (sRGB IEC61966-21) CannotEmbedFontPolicy Error CompatibilityLevel 14 CompressObjects Tags CompressPages true ConvertImagesToIndexed true PassThroughJPEGImages true CreateJobTicket false DefaultRenderingIntent Default DetectBlends true DetectCurves 00000 ColorConversionStrategy CMYK DoThumbnails false EmbedAllFonts true EmbedOpenType false ParseICCProfilesInComments true EmbedJobOptions true DSCReportingLevel 0 EmitDSCWarnings false EndPage -1 ImageMemory 1048576 LockDistillerParams false MaxSubsetPct 100 Optimize true OPM 1 ParseDSCComments true ParseDSCCommentsForDocInfo true PreserveCopyPage true PreserveDICMYKValues true PreserveEPSInfo true PreserveFlatness true PreserveHalftoneInfo false PreserveOPIComments true PreserveOverprintSettings true StartPage 1 SubsetFonts true TransferFunctionInfo Apply UCRandBGInfo Preserve UsePrologue false ColorSettingsFile () AlwaysEmbed [ true ] NeverEmbed [ true ] AntiAliasColorImages false CropColorImages true ColorImageMinResolution 300 ColorImageMinResolutionPolicy OK DownsampleColorImages true ColorImageDownsampleType Bicubic ColorImageResolution 300 ColorImageDepth -1 ColorImageMinDownsampleDepth 1 ColorImageDownsampleThreshold 150000 EncodeColorImages true ColorImageFilter DCTEncode AutoFilterColorImages true ColorImageAutoFilterStrategy JPEG ColorACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt ColorImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000ColorACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000ColorImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasGrayImages false CropGrayImages true GrayImageMinResolution 300 GrayImageMinResolutionPolicy OK DownsampleGrayImages true GrayImageDownsampleType Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE ltFEFF03a703c103b703c303b903bc03bf03c003bf03b903ae03c303c403b5002003b103c503c403ad03c2002003c403b903c2002003c103c503b803bc03af03c303b503b903c2002003b303b903b1002003bd03b1002003b403b703bc03b903bf03c503c103b303ae03c303b503c403b5002003ad03b303b303c103b103c603b1002000410064006f006200650020005000440046002003c003bf03c5002003b503af03bd03b103b9002003ba03b103c42019002003b503be03bf03c703ae03bd002003ba03b103c403ac03bb03bb03b703bb03b1002003b303b903b1002003c003c103bf002d03b503ba03c403c503c003c903c403b903ba03ad03c2002003b503c103b303b103c303af03b503c2002003c503c803b703bb03ae03c2002003c003bf03b903cc03c403b703c403b103c2002e0020002003a403b10020005000440046002003ad03b303b303c103b103c603b1002003c003bf03c5002003ad03c703b503c403b5002003b403b703bc03b903bf03c503c103b303ae03c303b503b9002003bc03c003bf03c103bf03cd03bd002003bd03b1002003b103bd03bf03b903c703c403bf03cd03bd002003bc03b5002003c403bf0020004100630072006f006200610074002c002003c403bf002000410064006f00620065002000520065006100640065007200200035002e0030002003ba03b103b9002003bc03b503c403b103b303b503bd03ad03c303c403b503c103b503c2002003b503ba03b403cc03c303b503b903c2002egt HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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29 Normalised strengths when designing to eurocode 6

When designing to Eurocode 6 normalised strengths are used taking into account the shape factor and bringing the unit strength back to a 100mm cube equivalent

As the UK quote actual block strengths as apposed to a cube strength the tables below show the shape factor conversion and the equivalent normalised strength in accordance with BS EN 772-1 table A1

Shape Factor correction factor (based upon a 215mm height block)

Block Width mm

X Factor

75

143

94

139

100

138

140

130

190

120

215

116

Normalised Compressive Strength

Unit Width (mm)

Block Strength 75 94 100 140 190 215

36 51 50 50 47 43 42

73 104 101 101 95 88 85

104 149 144 143 135 125 121

140 200 195 193 182 168 162

175 NA 243 241 227 210 203

225 NA 313 310 292 NA NA

300 NA 417 414 390 NA NA

30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

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Building products

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Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 CHS 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 DAN 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 DEU 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 ESP ltFEFF005500740069006c0069006300650020006500730074006100200063006f006e0066006900670075007200610063006900f3006e0020007000610072006100200063007200650061007200200064006f00630075006d0065006e0074006f00730020005000440046002000640065002000410064006f0062006500200061006400650063007500610064006f00730020007000610072006100200069006d0070007200650073006900f3006e0020007000720065002d0065006400690074006f007200690061006c00200064006500200061006c00740061002000630061006c0069006400610064002e002000530065002000700075006500640065006e00200061006200720069007200200064006f00630075006d0065006e0074006f00730020005000440046002000630072006500610064006f007300200063006f006e0020004100630072006f006200610074002c002000410064006f00620065002000520065006100640065007200200035002e003000200079002000760065007200730069006f006e0065007300200070006f00730074006500720069006f007200650073002egt ETI 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 FRA 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 GRE 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HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI ltFEFF0049007a006d0061006e0074006f006a00690065007400200161006f00730020006900650073007400610074012b006a0075006d00750073002c0020006c0061006900200076006500690064006f00740075002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006100730020006900720020012b00700061016100690020007000690065006d01130072006f00740069002000610075006700730074006100730020006b00760061006c0069007401010074006500730020007000690072006d007300690065007300700069006501610061006e006100730020006400720075006b00610069002e00200049007a0076006500690064006f006a006900650074002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006f002000760061007200200061007400760113007200740020006100720020004100630072006f00620061007400200075006e002000410064006f00620065002000520065006100640065007200200035002e0030002c0020006b0101002000610072012b00200074006f0020006a00610075006e0101006b0101006d002000760065007200730069006a0101006d002egt NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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30 Movement control

All structures move during their lifetime either due to settlement loading thermal movement changes in moisture movement and even chemical changes Irrespective of the cause this can lead to cracking which can effect the structural integrity weather-tightness or purely aesthetics of the structure With structures designed in accordance with BS 5628 or Eurocode 6 moisture movement of concrete blocks typically has the greatest movement characteristics Here we are considering how to control this movement and to minimise its impact

Materials react in different ways to changes in temperature and moisture clay bricks tend to expand due to moisture take up and thermal expansion whilst concrete blocks tend to shrink due to drying shrinkage

As blocks shrink this puts the structureproduct into tension as apposed to expanding bricks which put the product into compression

Masonry as a whole has a fraction of compressive strength when put into tension and as such requires more frequent

spacing of movement joints

Positioning

Lateral movement control

General Advice

bull As a general rule of thumb movement joints in unreinforced blockwork should be spaced at approximately 6 metre centres in any linear run

bull Movement joints should also be positioned within 3 metres of any cornerreturnpier

bull Inclusion of ladder type bed joint reinforcement should be included in two courses above and below all openings extending at least 600mm either side

Detailed location

bull Movement joint spacing should not exceed 3x the height of the panel (note this aspect ratio is frequently exceeded below long windows)

bull Changes in wall height or wall thickness

bull Changes in loading

bull Abutments to walls and columns

bull Expansion joints in floorsfoundations

bull Deep chases or recesses

bull Junctions with dissimilar materials (especially clay bricks)

bull Along the side of large openings

The spacing of movement joints can be increased by the inclusion of ladder type bed joint reinforcement as detailed below

It should however be noted that the inclusion of bed joint reinforcement does not guarantee that there will be no cracking in the built masonry but it will be limited to hairline cracks which will not effect the structural integrity of the wall

Continuous Ladder type BJR at the folowing vertical centres

Un-reinforced 675mm 450mm 215mm

Spacing of movement joints

6mm 9mm 11mm 13mm

bull NOTE Bed joint reinforcement should never bridge the movement joint

bull Where Stackbonded blockwork is being built BJR should be at 225mm vertical centres and movement joints at 6m centres

Joint Detail

Ideally the joint should be 10mm wide (to co-ordinate with blockmortar joint module) The joint should be filled with a pre compressed filler such as a polyethelene foam strip with a bond breaker to prevent the masticsealer bonding to it Note this is a contraction joint (the joint will open up)

Vertical movement control

The limitation on the uninterrupted height of a masonry wall in accordance with BS 5628 pt 1 2005 clause 25321 states that the outerleaf should be supported at intervals not exceeding every third storey or every 9 metres which ever is the less However if the building does not exceed four storeys or 12 metres height which ever is the less the outer leaf may be uninterrupted for its full height

31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

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Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

ltlt ASCII85EncodePages false AllowTransparency false AutoPositionEPSFiles true AutoRotatePages None Binding Left CalGrayProfile (Dot Gain 20) CalRGBProfile (sRGB IEC61966-21) CalCMYKProfile (US Web Coated 050SWOP051 v2) sRGBProfile (sRGB IEC61966-21) CannotEmbedFontPolicy Error CompatibilityLevel 14 CompressObjects Tags CompressPages true ConvertImagesToIndexed true PassThroughJPEGImages true CreateJobTicket false DefaultRenderingIntent Default DetectBlends true DetectCurves 00000 ColorConversionStrategy CMYK DoThumbnails false EmbedAllFonts true EmbedOpenType false ParseICCProfilesInComments true EmbedJobOptions true DSCReportingLevel 0 EmitDSCWarnings false EndPage -1 ImageMemory 1048576 LockDistillerParams false MaxSubsetPct 100 Optimize true OPM 1 ParseDSCComments true ParseDSCCommentsForDocInfo true PreserveCopyPage true PreserveDICMYKValues true PreserveEPSInfo true PreserveFlatness true PreserveHalftoneInfo false PreserveOPIComments true PreserveOverprintSettings true StartPage 1 SubsetFonts true TransferFunctionInfo Apply UCRandBGInfo Preserve UsePrologue false ColorSettingsFile () AlwaysEmbed [ true ] NeverEmbed [ true ] AntiAliasColorImages false CropColorImages true ColorImageMinResolution 300 ColorImageMinResolutionPolicy OK DownsampleColorImages true ColorImageDownsampleType Bicubic ColorImageResolution 300 ColorImageDepth -1 ColorImageMinDownsampleDepth 1 ColorImageDownsampleThreshold 150000 EncodeColorImages true ColorImageFilter DCTEncode AutoFilterColorImages true ColorImageAutoFilterStrategy JPEG ColorACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt ColorImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000ColorACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000ColorImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasGrayImages false CropGrayImages true GrayImageMinResolution 300 GrayImageMinResolutionPolicy OK DownsampleGrayImages true GrayImageDownsampleType Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA ltFEFF06270633062A062E062F0645002006470630064700200627064406250639062F0627062F0627062A002006440625064606340627062100200648062B062706260642002000410064006F00620065002000500044004600200645062A064806270641064206290020064406440637062806270639062900200641064A00200627064406450637062706280639002006300627062A0020062F0631062C0627062A002006270644062C0648062F0629002006270644063906270644064A0629061B0020064A06450643064600200641062A062D00200648062B0627062606420020005000440046002006270644064506460634062306290020062806270633062A062E062F062706450020004100630072006F0062006100740020064800410064006F006200650020005200650061006400650072002006250635062F0627063100200035002E0030002006480627064406250635062F062706310627062A0020062706440623062D062F062B002E0635062F0627063100200035002E0030002006480627064406250635062F062706310627062A0020062706440623062D062F062B002Egt BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH ltFEFF004e006100750064006f006b0069007400650020016100690075006f007300200070006100720061006d006500740072007500730020006e006f0072011700640061006d00690020006b0075007200740069002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b00750072006900650020006c0061006200690061007500730069006100690020007000720069007400610069006b007900740069002000610075006b01610074006f00730020006b006f006b007900620117007300200070006100720065006e006700740069006e00690061006d00200073007000610075007300640069006e0069006d00750069002e0020002000530075006b0075007200740069002000500044004600200064006f006b0075006d0065006e007400610069002000670061006c006900200062016b007400690020006100740069006400610072006f006d00690020004100630072006f006200610074002000690072002000410064006f00620065002000520065006100640065007200200035002e0030002000610072002000760117006c00650073006e0117006d00690073002000760065007200730069006a006f006d00690073002egt LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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31 Movement control

Max 2H

H

Dissimilar materials Change of loading Aspect ratio

Junctions with columns Change of height Movement joint in floor slab

Change in thickness Deep chasesrecesses

32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL ltFEFF0055007300740061007700690065006e0069006100200064006f002000740077006f0072007a0065006e0069006100200064006f006b0075006d0065006e007400f300770020005000440046002000700072007a0065007a006e00610063007a006f006e00790063006800200064006f002000770079006400720075006b00f30077002000770020007700790073006f006b00690065006a0020006a0061006b006f015b00630069002e002000200044006f006b0075006d0065006e0074007900200050004400460020006d006f017c006e00610020006f007400770069006500720061010700200077002000700072006f006700720061006d006900650020004100630072006f00620061007400200069002000410064006f00620065002000520065006100640065007200200035002e0030002000690020006e006f00770073007a0079006d002egt PTB 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 RUM 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32 Movement control

Junction details

Movement joint to internal wall Movement joint to internal wall

Sealant where required 25 x 3mm flat section metal Sealant where required

tie with one end de-bonded

Joint filler at 450mm vertical centres

Joint filler

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bondedJoint filler at 450mm vertical centres

Plaster finish Propriety type

movement bead

Junction details - junctions at columns

Movement joint at concrete column

Sealant where

reqiured

25 x 3mm flat section metal Concrete

ties with one end de-bondingcolumn

at 450mm vertical centres

Joint

filler

Dovetail channel Concrete

cast into column column

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Movement joint to internal wall

25 x 3mm flat section metal

tie with one end de-bonded

at 450mm vertical centres

Joint filler

Sealant where required

Wall ties at maximum vertical centres

Movement joint to blockwork at internal steel column

Sealant 75mm min

Joint filler

Flexible ties at max

300mm vertical centres

Fire and acoustic

protection column Column

2 layers of 125mm

plasterboard with

staggered joints Mineral wool

10kgm3

33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR ltFEFF004200720075006b00200064006900730073006500200069006e006e007300740069006c006c0069006e00670065006e0065002000740069006c002000e50020006f0070007000720065007400740065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e00740065007200200073006f006d00200065007200200062006500730074002000650067006e0065007400200066006f00720020006600f80072007400720079006b006b0073007500740073006b00720069006600740020006100760020006800f800790020006b00760061006c0069007400650074002e0020005000440046002d0064006f006b0075006d0065006e00740065006e00650020006b0061006e002000e50070006e00650073002000690020004100630072006f00620061007400200065006c006c00650072002000410064006f00620065002000520065006100640065007200200035002e003000200065006c006c00650072002000730065006e006500720065002egt POL 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 PTB ltFEFF005500740069006c0069007a006500200065007300730061007300200063006f006e00660069006700750072006100e700f50065007300200064006500200066006f0072006d00610020006100200063007200690061007200200064006f00630075006d0065006e0074006f0073002000410064006f0062006500200050004400460020006d00610069007300200061006400650071007500610064006f00730020007000610072006100200070007200e9002d0069006d0070007200650073007300f50065007300200064006500200061006c007400610020007100750061006c00690064006100640065002e0020004f007300200064006f00630075006d0065006e0074006f00730020005000440046002000630072006900610064006f007300200070006f00640065006d0020007300650072002000610062006500720074006f007300200063006f006d0020006f0020004100630072006f006200610074002000650020006f002000410064006f00620065002000520065006100640065007200200035002e0030002000650020007600650072007300f50065007300200070006f00730074006500720069006f007200650073002egt RUM 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 RUS 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33 Movement control

plasterboard with

staggered joints

225mm max

Column

Fire and

acoustic protection

to column

40mm min

Movement joint to blockwork at steel column in cavity wall

2 layers fo 125mm Mineral wool 10kgm3

Flat screen metal ties

de-bonding sleeves at

vertical centres Allow

100mm embedment

Ties fixed to column

(eg shot fired)

Wall ties at maximum

300mm vertical centres

Outer leaf

Internal blockwork butting steel frame

Movement joint to blockwork at steel frame - blockwork encasing column

De-bonded tie every second course Flexible ties with suitable drip

Note that clearance must be given to

allow for steelwork movement

De-bonded tie fixed to steelwork

Note that clearnace must be given

to allow for steelwork movement

Joint filled with polyethylene foam or

similar sealant used where required

Head restraint

500mm min

25mm max

215mm

Min 600mm

34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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ltFEFF04180437043f043e043b043704320430043904420435002004420435043704380020043d0430044104420440043e0439043a0438002c00200437043000200434043000200441044a0437043404300432043004420435002000410064006f00620065002000500044004600200434043e043a0443043c0435043d04420438002c0020043c0430043a04410438043c0430043b043d043e0020043f044004380433043e04340435043d04380020043704300020043204380441043e043a043e043a0430044704350441044204320435043d0020043f04350447043004420020043704300020043f044004350434043f0435044704300442043d04300020043f043e04340433043e0442043e0432043a0430002e002000200421044a04370434043004340435043d043804420435002000500044004600200434043e043a0443043c0435043d044204380020043c043e0433043004420020043404300020044104350020043e0442043204300440044f0442002004410020004100630072006f00620061007400200438002000410064006f00620065002000520065006100640065007200200035002e00300020043800200441043b0435043404320430044904380020043204350440044104380438002egt CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI ltFEFF0049007a006d0061006e0074006f006a00690065007400200161006f00730020006900650073007400610074012b006a0075006d00750073002c0020006c0061006900200076006500690064006f00740075002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006100730020006900720020012b00700061016100690020007000690065006d01130072006f00740069002000610075006700730074006100730020006b00760061006c0069007401010074006500730020007000690072006d007300690065007300700069006501610061006e006100730020006400720075006b00610069002e00200049007a0076006500690064006f006a006900650074002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b006f002000760061007200200061007400760113007200740020006100720020004100630072006f00620061007400200075006e002000410064006f00620065002000520065006100640065007200200035002e0030002c0020006b0101002000610072012b00200074006f0020006a00610075006e0101006b0101006d002000760065007200730069006a0101006d002egt NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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34 Plastering rendering and jointing

Plastering

The Masterblock range of concrete masonry affords an excellent base for plastering The choice of plaster and its application should be carried out in accordance with BS 8000 - 10 Code of practice for plastering and Rendering and also BS EN 13914 pt 1 and 2

Groups of plastering mixes

bull Mixes based on cement or cement and lime

bull Lightweight cement plasters

bull Premixed gypsum plasters

bull Premixed lightweight gypsum plasters

bull Mixes based on gypsum plasters gauged with lime

Cement or cement and lime based plasters are normally limited to the undercoat for general two coat plaster work as it is often difficult to obtain a very smooth finish with mixes containing sand This being the case the final coat is normally a gypsum or lightweight plaster mix compatible with a cement based undercoat For general purpose work the mix for the undercoat is the same as that given for designation (iii) in the table opposite for rendering mixes

The overall thickness of two coat work in cement-based or gypsum plaster on masonry should be nominally up to 13mm

Bond

The background should provide a satisfactory key Backgrounds may be improved by

bull Raking out masonry joints

bull Hacking and scratching

bull Applying a spatter-dash coat or stipple coat

bull Applying a bonding agent

Plaster mixes for different backgrounds

Note To increase the resistance to impact damage or to be denser for sound

reduction a 116 cementlimesand should be used

The table below gives guidance on the compatibility of background undercoat and finish for general purpose work

Before the plaster is applied the background to be plastered should be reasonably dry and free from dirt dust grease or any other contaminates which could affect the bond between the blockwork and plaster

Dense plastering - recommended mix

Dense (sand and cement) plasters

116 Cementlimeplastering sand or equivalent with plasticiser

129 Cementlimeplastering sand

Finish coat A skim coat of gypsum plaster should be used as recommended by the manufacturer

Lightweight plaster

Total thickness of plaster is 13mm when applied to blockwork in two coats The base of the undercoat should be approximately 10mm thick and finish skim coat of 3mm

Dry lining

Both standard plasterboard and laminated thermal boards can be fixed by bonding directly to the blockwork using proprietary dabs or adhesive

Background Undercoat Finish

Type Suction Key or bond Lightweight Cement based

Masterdenz Masterdenz-Paint Grade

Low Can be improved by raking of joints Bonding treatment recommended with based plasters

Bonding or Hardwall (iii) (iii)

Gypsum Lightweight

Masterlite Pro Medium Generally good an assessment should be made prior to plaster application With particularly smooth blocks a bonding treatment may be necessary

Browning (iii) (iii)

Gypsum Lightweight

35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA ltFEFF005500740069006c0069007a007a006100720065002000710075006500730074006500200069006d0070006f007300740061007a0069006f006e00690020007000650072002000630072006500610072006500200064006f00630075006d0065006e00740069002000410064006f00620065002000500044004600200070006900f900200061006400610074007400690020006100200075006e00610020007000720065007300740061006d0070006100200064006900200061006c007400610020007100750061006c0069007400e0002e0020004900200064006f00630075006d0065006e007400690020005000440046002000630072006500610074006900200070006f00730073006f006e006f0020006500730073006500720065002000610070006500720074006900200063006f006e0020004100630072006f00620061007400200065002000410064006f00620065002000520065006100640065007200200035002e003000200065002000760065007200730069006f006e006900200073007500630063006500730073006900760065002egt JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR ltFEFF004200720075006b00200064006900730073006500200069006e006e007300740069006c006c0069006e00670065006e0065002000740069006c002000e50020006f0070007000720065007400740065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e00740065007200200073006f006d00200065007200200062006500730074002000650067006e0065007400200066006f00720020006600f80072007400720079006b006b0073007500740073006b00720069006600740020006100760020006800f800790020006b00760061006c0069007400650074002e0020005000440046002d0064006f006b0075006d0065006e00740065006e00650020006b0061006e002000e50070006e00650073002000690020004100630072006f00620061007400200065006c006c00650072002000410064006f00620065002000520065006100640065007200200035002e003000200065006c006c00650072002000730065006e006500720065002egt POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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35 Plastering rendering and jointing

Jointingpointing

The choice of mortar pointing will depend upon the appearance required and degree of exposure It should be made in conjunction with the colour and texture of the mortar and type of masonry unit For instance good flush pointing may be difficult to achieve with some textured bricks

In exposed conditions particularly if full cavity fill is used raked joints should be avoided Water can also collect on the exposed top of the masonry units which may increase the risk of frost damage or efflorescence

Bucket handle and weather struck joints have the best weather resistant properties but need more care to obtain uniform shades

As the type of joint profile (see Fig 1) can affect cost it is advisable to include a full description at the specification stage

a) Curved Recessed (Bucket Handle) Joint

Most commonly used gives excellent weather resistance and can be used to highlight the accuracy of masonry units

b) Square Recessed Joint

Can give a precise effect to masonry units but may be unsuitable for use in exposed conditions or where full cavity fill is utilised Should be limited to a maximum depth of 10mm

c) Struck Off Weathered Joint

Gives good weathering characteristics and can produce interesting shadow effects on masonry walls

d) Flush Joint

Frequently used on selected common or painted masonry Not recommended for external use due to lack of weathering

Rendering

Several factors including the appearance desired exposure conditions nature of the background and the functional requirements determine the choice of render mix According to experience a porous render not stronger than that required for adequate durability and with an open or rough textured finish is likely to give the best results in the majority of circumstances Mixes that are too strong can cause problems It is important that successive render coats are specified as being no stronger than the previous coat or background and no thicker than the previous coat except in the case of a single coat (refer to specialist manufacturers for guidance and specifications)

Prior to applying the render the background should be sound and clean and assessed for its suitability to receive direct application of the undercoat

A render normally comprises of at least two layers namely an undercoat and a final coat Metal lathing sometimes used in severe exposure conditions or on weak backgrounds should have two undercoats

Where improved resistance to rain penetration is desired two undercoats should be used Normally undercoats are between 8-12mm thick with the final coat approximately 6mm thick Overall the rendering thickness should not be less than 20mm for three coat work and 16mm for two coat work

Two important factors in determining the mixes to be used are the suction and key of the background Standard lightweight blocks are medium suction and generally provide adequate surface key to allow direct application of the undercoat though an assessment should be made in case a pre-treatment is necessary in the case of unusually smooth blocks Facing blocks have low suction and relatively poor keying properties It is therefore recommended that the joints are raked back squarely 10mm to 12mm deep A stipple coatspatterdash coat should consist of 1 part cement to 2 parts sharp sand mixed to a thick creamy consistency with water and a bonding agent (eg SBR)

For a stipple coat the slurry should be vigorously brushed onto the wall to coat the surface and then immediately stippled with a freshly loaded prush to provide a stipple brush texture Alternatively a spatterdash is applied by throwing the mixture onto the wall to give a rough texture The treated surface should be protected from drying out for the first day and then allowed to dry and harden for a further day prior to applying the firstundercoat of render Alternatively a adhesive slurry can be applied to the surface

In the case of the adhesive slurry in order to avoid an effective debonding layer forming it is essential that the rendering undercoat is applied immediately whilst the slurry is wet

However the advice from the individual manufacturer should be followed in the case of proprietary adhesives

Tables 1 and 2 give general information on mixes suitable for render and specification for various finishes in moderate and sheltered exposure It should be noted that movement joints should be provided at 6 metre centres and within 3 metres of any cornerreturn

Further information on external rendering can be obtained by reference to BS EN 13914 Code of practice for external rendering together with BS 8000 Part 10 Workmanship on building sites code of practice for plastering and rendering

36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN ltFEFF004b0069007600e1006c00f30020006d0069006e0151007300e9006701710020006e0079006f006d00640061006900200065006c0151006b00e90073007a00ed007401510020006e0079006f006d00740061007400e100730068006f007a0020006c006500670069006e006b00e1006200620020006d0065006700660065006c0065006c0151002000410064006f00620065002000500044004600200064006f006b0075006d0065006e00740075006d006f006b0061007400200065007a0065006b006b0065006c0020006100200062006500e1006c006c00ed007400e10073006f006b006b0061006c0020006b00e90073007a00ed0074006800650074002e0020002000410020006c00e90074007200650068006f007a006f00740074002000500044004600200064006f006b0075006d0065006e00740075006d006f006b00200061007a0020004100630072006f006200610074002000e9007300200061007a002000410064006f00620065002000520065006100640065007200200035002e0030002c0020007600610067007900200061007a002000610074007400f3006c0020006b00e9007301510062006200690020007600650072007a006900f3006b006b0061006c0020006e00790069007400680061007400f3006b0020006d00650067002egt ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH ltFEFF004e006100750064006f006b0069007400650020016100690075006f007300200070006100720061006d006500740072007500730020006e006f0072011700640061006d00690020006b0075007200740069002000410064006f00620065002000500044004600200064006f006b0075006d0065006e007400750073002c0020006b00750072006900650020006c0061006200690061007500730069006100690020007000720069007400610069006b007900740069002000610075006b01610074006f00730020006b006f006b007900620117007300200070006100720065006e006700740069006e00690061006d00200073007000610075007300640069006e0069006d00750069002e0020002000530075006b0075007200740069002000500044004600200064006f006b0075006d0065006e007400610069002000670061006c006900200062016b007400690020006100740069006400610072006f006d00690020004100630072006f006200610074002000690072002000410064006f00620065002000520065006100640065007200200035002e0030002000610072002000760117006c00650073006e0117006d00690073002000760065007200730069006a006f006d00690073002egt LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY ltFEFF0054006900650074006f0020006e006100730074006100760065006e0069006100200070006f0075017e0069007400650020006e00610020007600790074007600e100720061006e0069006500200064006f006b0075006d0065006e0074006f0076002000410064006f006200650020005000440046002c0020006b0074006f007200e90020007300610020006e0061006a006c0065007001610069006500200068006f0064006900610020006e00610020006b00760061006c00690074006e00fa00200074006c0061010d00200061002000700072006500700072006500730073002e00200056007900740076006f00720065006e00e900200064006f006b0075006d0065006e007400790020005000440046002000620075006400650020006d006f017e006e00e90020006f00740076006f00720069016500200076002000700072006f006700720061006d006f006300680020004100630072006f00620061007400200061002000410064006f00620065002000520065006100640065007200200035002e0030002000610020006e006f0076016100ed00630068002egt SLV 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 SUO 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 SVE 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 TUR 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36 Plastering rendering and jointing

Mixes suitable for rendering

Mix designation Mix proportions by volume based on damp sand

Cementready mixed limesand

Cementlimesand Ready mixed limesand

Cementready mixed material

Cementsand (using plasticizer)

Masonry cementsand

ii 1124-412 19124-412 14-412 13-4 1212-312

iii 115-6 16 15-6 15-6 14-5

iv 128-9 1412 18-9 17-8 1512-612

With fine or poorly graded sands the lower volume of sand should be used For other mixes please refer to BS EN 13914 or BS EN 998

Recommended rendering specifications - moderate and sheltered exposure

Background Undercoat Final coat

Designation (see table above)

Thickness Finish Mix proportions by volume of designation

(see table above)

All block types III 8-12 Trowel applied Woodfloat Scrapped Patterned

Tooled IV

Efflorescence

Causes

Efflorescence is caused by a combination of circumstances the material must contain soluble salts there must be moisture to dissolve the soluble salts evaporation or hydrostatic pressure must cause the solution to move toward the surface and the solution must evaporate to leave salts behind as an efflorescence

Deposits vary in amount and character according to the nature of the soluble materials and atmospheric conditions

Weather conditions particularly affect efflorescence Even after long rainy periods moisture evaporates so quickly that comparatively small amounts of salt are brought to the surface Efflorescence is usually more common in winter when a slower rate of evaporation allows migration of salts to the surface Over time efflorescence becomes lighter and less extensive unless there is an external source of salt Dark surfaces show up the deposits much more than lightshycoloured surfaces

Efflorescence producing salts are usually carbonates of calcium potassium and sodium sulphates of sodium potassium magnesium calcium and iron (ferrous)

bicarbonate of sodium or silicate of sodium In most cases salts causing efflorescence come from beneath the surface but chemicals in the materials can also react with chemicals in the atmosphere

If soluble salts are eliminated and water passage through the mass is prevented then efflorescence will not occur

Eliminating the Salts

1 Never use unwashed sand

2 Use low-alkali cement

3 Use dehydrated lime free from calcium sulphate when using lime for mortar or stucco

37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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37 Aggregate Industries The complete service

Aggregate Industries is a leading player in the construction industry We produce and supply a wide range of construction materials including

Aggregates

We supply crushed rock sand and gravel stone and fill materials for construction These can be delivered by road rail or marine transport We also produce silica and specialist sands

Tel 01455 285200

Email aggregatesaggregatecom

Asphalt

We are a leading supplier of a full range of coated materials with over 40 locations in the UK serving major conurbations including sites for collect business

Tel 0844 557 8396

Email asphaltaggregatecom

Commercial landscaping

Flag paving block paving and kerb products are available in both concrete and natural stone Surface water drainage products are also part of a wide ranging portfolio

Tel 01335 372222 Email landscapingaggregatecom

Overseas

Aggregate Industries Overseas supplies high quality aggregates to Europe from bases in the UK Poland Germany Norway and Latvia

Tel 01530 512025

Email overseassalesaggregatecom

Building products

We produce decorative masonry building blocks reconstructed stone walling architectural cast stone dressings and roofing slates

Tel 01285 646884

Email buildingproductsaggregatecom

Contracting

We strengthen our construction materials portfolio through our involvement in infrastructure surfacing and civil contracting works

Tel 01530 510066

Email contractingaggregatecom

Garden landscaping

Bradstone is one of the UKs leading ranges of natural and reconstituted stone paving walling edging and coping block paving and decorative aggregates

Tel 01335 372222 Email bradstonegardenaggregatecom

Concrete

We offer a complete range of ready-mixed concretes and screeds operating from over 70 sites We also have an operation that caters for smaller collect loads

Tel 01283 714187

Email concreteaggregatecom

Cementitious materials

We import grey and white cement from Northern Europe and supply Fly Ash to ready-mixed precast mortar screed and render companies

Tel 01530 512000 Email cementitiousaggregatecom

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

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PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN 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 DEU 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 ESP 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 ETI 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 FRA 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 GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR ltFEFF04120438043a043e0440043804410442043e043204430439044204350020044604560020043f043004400430043c043504420440043800200434043b044f0020044104420432043e04400435043d043d044f00200434043e043a0443043c0435043d044204560432002000410064006f006200650020005000440046002c0020044f043a04560020043d04300439043a04400430044904350020043f045604340445043e0434044f0442044c00200434043b044f0020043204380441043e043a043e044f043a04560441043d043e0433043e0020043f0435044004350434043404400443043a043e0432043e0433043e0020043404400443043a0443002e00200020042104420432043e04400435043d045600200434043e043a0443043c0435043d0442043800200050004400460020043c043e0436043d04300020043204560434043a0440043804420438002004430020004100630072006f006200610074002004420430002000410064006f00620065002000520065006100640065007200200035002e0030002004300431043e0020043f04560437043d04560448043e04570020043204350440044104560457002egt ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice

Aggregate Industries North End Farm Works Ashton Keynes Wiltshire SN6 6QX

Tel 01285 646811 Fax 01285 646895

wwwaggregatecom

copy Aggregate Industries UK Ltd 2013 Registered address Bardon Hall Copt Oak Road Markfield Leicestershire LE67 9PJ No 00245717 CODE

ltlt ASCII85EncodePages false AllowTransparency false AutoPositionEPSFiles true AutoRotatePages None Binding Left CalGrayProfile (Dot Gain 20) CalRGBProfile (sRGB IEC61966-21) CalCMYKProfile (US Web Coated 050SWOP051 v2) sRGBProfile (sRGB IEC61966-21) CannotEmbedFontPolicy Error CompatibilityLevel 14 CompressObjects Tags CompressPages true ConvertImagesToIndexed true PassThroughJPEGImages true CreateJobTicket false DefaultRenderingIntent Default DetectBlends true DetectCurves 00000 ColorConversionStrategy CMYK DoThumbnails false EmbedAllFonts true EmbedOpenType false ParseICCProfilesInComments true EmbedJobOptions true DSCReportingLevel 0 EmitDSCWarnings false EndPage -1 ImageMemory 1048576 LockDistillerParams false MaxSubsetPct 100 Optimize true OPM 1 ParseDSCComments true ParseDSCCommentsForDocInfo true PreserveCopyPage true PreserveDICMYKValues true PreserveEPSInfo true PreserveFlatness true PreserveHalftoneInfo false PreserveOPIComments true PreserveOverprintSettings true StartPage 1 SubsetFonts true TransferFunctionInfo Apply UCRandBGInfo Preserve UsePrologue false ColorSettingsFile () AlwaysEmbed [ true ] NeverEmbed [ true ] AntiAliasColorImages false CropColorImages true ColorImageMinResolution 300 ColorImageMinResolutionPolicy OK DownsampleColorImages true ColorImageDownsampleType Bicubic ColorImageResolution 300 ColorImageDepth -1 ColorImageMinDownsampleDepth 1 ColorImageDownsampleThreshold 150000 EncodeColorImages true ColorImageFilter DCTEncode AutoFilterColorImages true ColorImageAutoFilterStrategy JPEG ColorACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt ColorImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000ColorACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000ColorImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasGrayImages false CropGrayImages true GrayImageMinResolution 300 GrayImageMinResolutionPolicy OK DownsampleGrayImages true GrayImageDownsampleType Bicubic GrayImageResolution 300 GrayImageDepth -1 GrayImageMinDownsampleDepth 2 GrayImageDownsampleThreshold 150000 EncodeGrayImages true GrayImageFilter DCTEncode AutoFilterGrayImages true GrayImageAutoFilterStrategy JPEG GrayACSImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt GrayImageDict ltlt QFactor 015 HSamples [1 1 1 1] VSamples [1 1 1 1] gtgt JPEG2000GrayACSImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt JPEG2000GrayImageDict ltlt TileWidth 256 TileHeight 256 Quality 30 gtgt AntiAliasMonoImages false CropMonoImages true MonoImageMinResolution 1200 MonoImageMinResolutionPolicy OK DownsampleMonoImages true MonoImageDownsampleType Bicubic MonoImageResolution 1200 MonoImageDepth -1 MonoImageDownsampleThreshold 150000 EncodeMonoImages true MonoImageFilter CCITTFaxEncode MonoImageDict ltlt K -1 gtgt AllowPSXObjects false CheckCompliance [ None ] PDFX1aCheck false PDFX3Check false PDFXCompliantPDFOnly false PDFXNoTrimBoxError true PDFXTrimBoxToMediaBoxOffset [ 000000 000000 000000 000000 ] PDFXSetBleedBoxToMediaBox true PDFXBleedBoxToTrimBoxOffset [ 000000 000000 000000 000000 ] PDFXOutputIntentProfile () PDFXOutputConditionIdentifier () PDFXOutputCondition () PDFXRegistryName () PDFXTrapped False CreateJDFFile false Description ltlt ARA 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 BGR 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 CHS ltFEFF4f7f75288fd94e9b8bbe5b9a521b5efa7684002000410064006f006200650020005000440046002065876863900275284e8e9ad88d2891cf76845370524d53705237300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c676562535f00521b5efa768400200050004400460020658768633002gt CHT ltFEFF4f7f752890194e9b8a2d7f6e5efa7acb7684002000410064006f006200650020005000440046002065874ef69069752865bc9ad854c18cea76845370524d5370523786557406300260a853ef4ee54f7f75280020004100630072006f0062006100740020548c002000410064006f00620065002000520065006100640065007200200035002e003000204ee553ca66f49ad87248672c4f86958b555f5df25efa7acb76840020005000440046002065874ef63002gt CZE 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 DAN ltFEFF004200720075006700200069006e0064007300740069006c006c0069006e006700650072006e0065002000740069006c0020006100740020006f007000720065007400740065002000410064006f006200650020005000440046002d0064006f006b0075006d0065006e007400650072002c0020006400650072002000620065006400730074002000650067006e006500720020007300690067002000740069006c002000700072006500700072006500730073002d007500640073006b007200690076006e0069006e00670020006100660020006800f8006a0020006b00760061006c0069007400650074002e0020004400650020006f007000720065007400740065006400650020005000440046002d0064006f006b0075006d0065006e0074006500720020006b0061006e002000e50062006e00650073002000690020004100630072006f00620061007400200065006c006c006500720020004100630072006f006200610074002000520065006100640065007200200035002e00300020006f00670020006e0079006500720065002egt DEU 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 ESP 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 ETI 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 FRA ltFEFF005500740069006c006900730065007a00200063006500730020006f007000740069006f006e00730020006100660069006e00200064006500200063007200e900650072002000640065007300200064006f00630075006d0065006e00740073002000410064006f00620065002000500044004600200070006f0075007200200075006e00650020007100750061006c0069007400e90020006400270069006d007000720065007300730069006f006e00200070007200e9007000720065007300730065002e0020004c0065007300200064006f00630075006d0065006e00740073002000500044004600200063007200e900e90073002000700065007500760065006e0074002000ea0074007200650020006f007500760065007200740073002000640061006e00730020004100630072006f006200610074002c002000610069006e00730069002000710075002700410064006f00620065002000520065006100640065007200200035002e0030002000650074002000760065007200730069006f006e007300200075006c007400e90072006900650075007200650073002egt GRE 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 HEB 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 HRV (Za stvaranje Adobe PDF dokumenata najpogodnijih za visokokvalitetni ispis prije tiskanja koristite ove postavke Stvoreni PDF dokumenti mogu se otvoriti Acrobat i Adobe Reader 50 i kasnijim verzijama) HUN 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 ITA 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 JPN ltFEFF9ad854c18cea306a30d730ea30d730ec30b951fa529b7528002000410064006f0062006500200050004400460020658766f8306e4f5c6210306b4f7f75283057307e305930023053306e8a2d5b9a30674f5c62103055308c305f0020005000440046002030d530a130a430eb306f3001004100630072006f0062006100740020304a30883073002000410064006f00620065002000520065006100640065007200200035002e003000204ee5964d3067958b304f30533068304c3067304d307e305930023053306e8a2d5b9a306b306f30d530a930f330c8306e57cb30818fbc307f304c5fc59808306730593002gt KOR ltFEFFc7740020c124c815c7440020c0acc6a9d558c5ec0020ace0d488c9c80020c2dcd5d80020c778c1c4c5d00020ac00c7a50020c801d569d55c002000410064006f0062006500200050004400460020bb38c11cb97c0020c791c131d569b2c8b2e4002e0020c774b807ac8c0020c791c131b41c00200050004400460020bb38c11cb2940020004100630072006f0062006100740020bc0f002000410064006f00620065002000520065006100640065007200200035002e00300020c774c0c1c5d0c11c0020c5f40020c2180020c788c2b5b2c8b2e4002egt LTH 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 LVI 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 NLD (Gebruik deze instellingen om Adobe PDF-documenten te maken die zijn geoptimaliseerd voor prepress-afdrukken van hoge kwaliteit De gemaakte PDF-documenten kunnen worden geopend met Acrobat en Adobe Reader 50 en hoger) NOR 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 POL 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 PTB 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 RUM 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 RUS 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 SKY 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 SLV 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 SUO 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 SVE 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 TUR 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 UKR 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 ENU (Use these settings to create Adobe PDF documents best suited for high-quality prepress printing Created PDF documents can be opened with Acrobat and Adobe Reader 50 and later) gtgt Namespace [ (Adobe) (Common) (10) ] OtherNamespaces [ ltlt AsReaderSpreads false CropImagesToFrames true ErrorControl WarnAndContinue FlattenerIgnoreSpreadOverrides false IncludeGuidesGrids false IncludeNonPrinting false IncludeSlug false Namespace [ (Adobe) (InDesign) (40) ] OmitPlacedBitmaps false OmitPlacedEPS false OmitPlacedPDF false SimulateOverprint Legacy gtgt ltlt AddBleedMarks false AddColorBars false AddCropMarks false AddPageInfo false AddRegMarks false ConvertColors ConvertToCMYK DestinationProfileName () DestinationProfileSelector DocumentCMYK Downsample16BitImages true FlattenerPreset ltlt PresetSelector MediumResolution gtgt FormElements false GenerateStructure false IncludeBookmarks false IncludeHyperlinks false IncludeInteractive false IncludeLayers false IncludeProfiles false MultimediaHandling UseObjectSettings Namespace [ (Adobe) (CreativeSuite) (20) ] PDFXOutputIntentProfileSelector DocumentCMYK PreserveEditing true UntaggedCMYKHandling LeaveUntagged UntaggedRGBHandling UseDocumentProfile UseDocumentBleed false gtgt ]gtgt setdistillerparamsltlt HWResolution [2400 2400] PageSize [612000 792000]gtgt setpagedevice