division 09 finishes final

7/23/2019 Division 09 Finishes Final

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AL FATEH UNIVERSITY ODAC

H90 TENSILE FABRIC COVERINGS

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Al LABINA / AL MANARin partnership with Hamza/ ECH/ LCE JV


To be read in conjunction with General Requirements.

GENERAL

110 SINGLE LAYER FABRIC COVERING SYSTEM - Type ES1- System manufacturer: Architen Landrell Associates Ltd. (Station Road,

Chepstow, Monmouthshire NP16 5PF, Telephone +44 (0) 1291 638 200, [email protected]) or equivalent and approved.

- Fabric: Polytetrafluoroethylene (PTFE).- Warp and weft: To specialist contractors specification.- Strength: To specialist contractors specification.- Stiffness: To specialist contractors specification.- Bow: To specialist contractors specification .- Coating: Polytetrafluoroethylene (PTFE).

Coverage: To specialist contractors specification.

Surface quality: Smooth with no significant discontinuities or blemishes whenviewed externally from a distance of 4 m in directional sunlight.- Colour: White.- Fire resistance: - Integrity: Half hour

- Surface spread of flame: European class BROOF(t4).- Testing of and classification of membrane to:

- External fire exposure roof test: BS 476-3.- Fire propagation: BS 476-6.- Spread of flame BS 476-7.- Non combustibility of substrate: BS 7837

In the event of a fire the structural integrity of the system must be maintainedeven when large sections of fabric are lost.

- Translucency: 25%.- Seams: To specialist contractors specification.- Connection to supporting structure: To specialist contractors specification.- Fixings: To specialist contractors specification.- Supports: To specialist contractors specification.

150 CONTRACTOR DESIGN- Tensile fabric coverings: Complete detailed design of the tensile fabric roof and

associated features and submit before commencement of fabrication.- Related works: Coordinate with supporting structure and interfaces in detailed

design.

155 CONTRACTOR DESIGN PROPOSALS- The general arrangement drawings indicate design intent but do not preclude

submission with the tender of reasonable alternative proposals forconsideration.

156 INFORMATION TO BE PROVIDED AFTER ACCEPTANCE OF TENDER- Submit to the CA within 4 weeks of appointment the following tensile fabric

roof assembly particulars:- A schedule of detailed drawings and dates for submission for comment.


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- A schedule of loads that will be transmitted from the tensile fabric roofassembly to the structure.

- Proposed fixing anchor details relevant to structural design and construction.- A detailed testing programme in compliance with the Main Contract master

programme.- A detailed fabrication and installation programme in compliance with the Main

Contract master programme.

157 INFORMATION TO BE PROVIDED BEFORE COMMENCEMENT OF TESTINGOR FABRICATION OF TENSILE FABRIC ROOF

- Submit the following curtain particulars:- Detailed drawings to fully describe fabrication and installation.- Detailed calculations to prove compliance with design/ performance

requirements.- Project specific fabrication, handling and installation method statements.- Certification for incorporated components manufactured by others confirming

their suitability for proposed locations.- Recommendations for spare parts for future repairs or replacements.- Recommendations for safe dismantling and recycling or disposal of products.

160 EVIDENCE OF PERFORMANCE- Certification: Provide independently certified evidence that incorporated

components comply with specified performance.

170 TESTING FABRIC MATERIAL- Material: PTFE.

- Undertake tests with reference to BS 3424-0.- Test results: Submit.

PERFORMANCE

220 VERIFICATION OF PERFORMANCE- Reports and calculations: Based on approved laboratory testing or computer

modelling. Submit before commencement of work.

240 INTEGRITY: CONTRACTOR DETERMINED PARAMETERS- Requirement: Tensile fabric coverings and supporting structure must resist wind

loads, dead loads and design live loads and accommodate deflections andthermal movements without damage.

- Design wind loads: Calculate in accordance with BS 6399-2.

245 FACTOR OF SAFETY- Requirement: All components shall be designed to give minimum factor of safety:

- Permanent long term (dead load and pre-stress): 6 or greater.- Transient short term (dead load, pre-stress and wind load): 6 or greater.- Medium term (dead load, pre-stress and snow load): 6 or greater.


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246 TOLERANCE- Shall be provided for the tensile fabric roof design to enable it to be installed

within agreed limits to be set by reference to the building tolerances required bythe CA. The Contractor shall also take into account the relationship of his workwith other adjacent trades and the tolerances thereon.

247 MATERIALS- All materials used shall be compatible with one another and with the building

fabric. Where required between contact surfaces of concrete, galvanised orstainless steel, or aluminium, particularly in damp conditions, a separatingmembrane shall be introduced. The selection of metal types and grades, for usein the tensile fabric roof construction shall, notwithstanding any otherrequirements of this specification, take into account the requirement to preventthe occurrence of electrolytic action between metal.

248 INTEGRITY- Requirement: The tensile fabric roof assembly must resist wind loads, dead loads

and design live loads, and accommodate deflections and movements withoutdamage.- Design wind pressure: Calculate in accordance with BS 6399-2 with a minimum

design wind pressure of 1200 Pa.- Permanent imposed loads: To structural engineers direction

251 DESIGN LIFE OF TENSILE FABRIC ROOF ASSEMBLY- Duration (minimum): 30 years.- Maintenance: Submit a schedule for maintenance and for replacement of

secondary components.

252 ATMOSPHERIC CONDITIONS

- During the life of the tensile fabric roof assembly exposure to sunlight shall notreduce the performance or visual appearance.

253 SAFETY- The finished surfaces of curtain walling in all accessible internal and external

areas must not:- Have irregularities capable of inflicting personal injury.- Release irritant or staining substances.

290 SOLAR AND LIGHT CONTROL- Tensile fabric coverings must have:

- Total solar energy transmission of normal incident solar radiation (maximum):

15%- Reflectivity of normal incident solar radiation (minimum): 70% .- Translucency (minimum) 15%.

PRODUCTS

310 PRODUCT SAMPLES- Before commencing detailed design, submit labelled samples of: Fabric (as 110),

Clamping plates (as 320), Rods (as 350) and Wire ropes (as 360) .


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315 FIXING SAMPLES- General: During detailed design, submit labelled samples of each type of fixing,

with details of methods of adjustment and tolerances.

320 CLAMPING PLATES- Type: Stainless Steel .- Manufacturer: Architen Landrell or equivalent and approved.- Size: To specialist contractors specification- Radius to corners/ edges in contact with fabric (minimum): To specialist

contractors specification.- Bolts: To specialist contractors specification.- Other requirements: To specialist contractors specification.

330 STRAPS- Type: PTFE .- Manufacturer: Architen Landrell or equivalent and approved.- Weave: To specialist contractors specification. .

- Size: To specialist contractors specification.- Extension at break (maximum): To specialist contractors specification.- Attachment: To specialist contractors specification.- Other requirements: To specialist contractors specification.

350 RODS- Type: Stainless Steel.- Manufacturer: Architen Landrell.- Size: To specialist contractors specification.- Accessories: To specialist contractors specification.

360 WIRE ROPES

- Type: Stainless Steel.- Manufacturer: Architen Landrell.- Size: To specialist contractors specification. .- Testing construction stretch (measured at 15% MBL): To specialist contractors

specification.- Test results: Submit.

- Accessories: To specialist contractors specification.

370 CORNER PLATES- Type: Stainless Steel.- Manufacturer: Architen Landrell or equivalent and approved.- Size: To specialist contractors specification.

375 PACKING ANDSHIMS- General: To be of aluminium or austenitic stainless steel.

380 FIXING ANCHORS- Dimensions: Not less than recommended by their manufacturers.- Adjustment capability: Sufficient in three dimensions to accommodate building

structure and curtain walling fabrication/ installation tolerances.


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391 METALWORK- Requirement: As section Z11, unless specified otherwise in this section.

FABRICATION

610 SETTING OUT OF FABRIC COVERINGS- Centre line of panel: Along and perpendicular to the centre line of the roll.

- Accuracy: 1 mm.- Diagonal distortion of weave, faults, small tears or miscuts: Not permitted.

620 FABRICATING CABLE CUFFS- Type: To specialist contractors specification.- Width (minimum): To specialist contractors specification.- Attachment: To specialist contractors specification. .- Testing: Demonstrate structural capacity of cable cuffs is equal to attacing

membrane.- Test results: Submit.

630 FABRICATING PANELS- Accuracy:

- Tolerance in weft direction (maximum): 15mm.- Tolerance in position of cable and belt lines (maximum): +0-10 mm rela.

- Testing: One strip tensile test in warp and weft directions per 100 m2of fabric.One trapezoidal tear test in warp and weft directions per 200m- Test results: Submit.

640 FACTORY SEAMING OF PANELS- Junctions: Minimize number of layers to be joined.- Method: Ironed and pressure bonded .

- Seam:- Width: To specialist contractors specification.- Number of rows/ Spacing of stitches: To specialist contractors specification.- Quality: Continuous and of uniform width.- Distance from edge: To specialist contractors specification.

- Seam sealing: To specialist contractors specification.- Seam testing: Demonstrate ultimate strength capacity of welded seams by

physical test. Establish 100% fabric strength at 200C and long term loading of60kN/m at 700C.- Frequency of testing: Submit proposals .- Test results: Submit.

- Integrity of coating: Maintain during joining process to exclude water and air.

EXECUTION

701 GENERALLY:- Fabricate and install the tensile fabric roof in accordance with this specification

and the final detailed drawings.- Select and align all products to ensure uniformity of appearance.- Joints must only occur at positions indicated on final detailed drawings.- Isolate dissimilar metals to prevent electrolytic corrosion.


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- All fixings must be concealed unless indicated on final detailed drawings. Whereexposed they must match the material and finish of the products fixed.

- Machine cut and drill all products in the workshop wherever possible.- Mark or tag all products to facilitate identification during assembly, handling,

storage and installation. Do not mark surfaces visible in the completeinstallations.

- Joints between frames and building surrounds shall be sealed internally wherenecessary and bedded and sealed externally.

- Aluminium surfaces in contact with cementitious surfaces shall be protected by abitumen coating to BS 3416 type 1.

710 ADVERSE WEATHER- Installation of fabric coverings: Unless effective temporary cover is provided,

suspend work:- At temperatures below: 50C .- In wet or damp conditions.

- Unfinished areas of coverings: Keep dry and protect from wind action.

760 INSPECTION:- All fabrication and assembled units must be carefully inspected for match with

approved samples and for compliance with this specification and the final detaileddrawings before dispatch to site.

- Give adequate notice of inspection arrangements to enable the CA and/or otheraffected parties to be present.

761 PROTECTION:- All fabrications and assembled units must be protected against damage,

corrosion and disfigurement during handling, installation and subsequent siteoperations.

- Protective coverings must be applied before dispatch to site and must not bedetrimental to curtain walling products, finishes or installation procedures.

762 HANDLING AND STORAGE- Do not deliver to site any tensile fabric roof products and units which cannot be

installed immediately or unloaded into a suitable well protected storage area.

763 SUITABILITY OF SUPPORTING STRUCTURE- Pre-installation survey: Submit report if required accuracy or security of curtain

walling installation cannot be achieved.

764 FIXING ANCHOR INSTALLATION- Site drill or cut into structure only in approved locations.- Distances between all fixing components and edges of concrete must not be less

than recommended by manufacturers.- Obtain approval before carrying out corrective fabrication to fixing anchors.

770 WELDING- Is permitted, subject to completion of a hot work permit form and compliance

with its requirements.


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775 DAMAGE- Do not repair the tensile fabric roof without approval. Such approval will not be

given where products and units are badly damaged or where the proposed repairwill impair performance or appearance.

- Repairs may require additional site testing at the discretion of the CA.- Schedule repairs or record on drawings for inclusion in the maintenance manual.

COMPLETION

910 INSPECTION- Interim and final covering inspections: Submit report.

920 TESTING OF FABRIC- Standard: To the relevant parts of BS EN ISO 1421.- Timing of test: On completion of installation .- Test results: Submit on completion of testing.

925 PROJECT TESTING (LABORATORY)- At an agreed stage in detailed design work arrange for laboratory testing of a

specimen of tensile fabric in accordance with relevant clauses of thisspecification.

- The costs of such tests shall be identified in the tender.- Fabrication and installation of tensile fabric roof assembly must not commence

until test results and reports showing compliance with this specification havebeen submitted to the CA.

926 PROJECT TESTING (SITE)- At an agreed stage during preliminary installation on site, arrange for testing of a

section of tensile fabric roof assembly in accordance with relevant clauses of thisspecification.

- Protect building structure, components and finishes from any damageconsequent upon testing.

- Installation of general areas of curtain walling must not continue until site testresults and reports showing compliance with this specification have beensubmitted to the CA.

930 DOCUMENTATION- Submit:

- Manufacturer's maintenance instructions.- Guarantees, warranties and test certificates.

940 COMPLETION- Cables: Not damaged, crushed or kinked.- Fabric:

- Cable cuffs: Unwrinkled.- Colour and translucency: Consistent, free from discontinuities and

discolouration.- Required prestress: Verified.- Surfaces: Clean and smooth, fully sealed, weathertight and free draining.


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- Completed coverings: Protect against damage from adjacent or high levelworking.

995 MAINTENANCE- Prepare a maintenance manual. Unless otherwise instructed or agreed the

manual must be completed and handed over to the CA at Practical Completion.


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H92 RAINSCREEN CLADDING

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TYPES OF RAINSCREEN CLADDING

120 CERAMIC RAINSCREEN CLADDING: Type CW6Drained and back ventilated Ceramic Granite system, comprising fired clayceramic granite tiles on aluminium support bracketry.

- Primary Support Structure: Dense concrete frame, blockwork.- Rainscreen Cladding System:- Manufacturer: James and Taylor Ltd, Mitchell House, 2 Montem Road, New

Malden, Surrey,KT3 3QW. Tel: 0208 942 3688. Fax: 020 8336 2036Email: [email protected] equal and approved.

- Reference: Ceramic Granite Rainscreen System.

- Type: Fully drained and back ventilated.- Rainscreen panel:- Manufacturer: James and Taylor Ltd, as above.- Product Reference: Ceramic Granite Rainscreen System.- Material: Ceramic tiles, free from cracks, fissures, discolorations or any other

defects, which may adversely affect strength, durability or appearance. Tiletolerances as below.Length max: 0.25%Height max: 1.0%Thickness max: 1.0mmFlatness max 0.5% over lengthFormat Size: 1200 x 600mm

Impact Loads : Suitable for wall categories: C/D/E/F : BS 8200;1985:7.2 Table 2Other System Components: Undercut anchors fixed to holes drilled in the rear ofthe ceramic tiles (4 No per tile) fixed to standard, adjustable and fixed systembrackets and ref AR/130 horizontal aluminium rail.

- Thickness: Tile thickness 12mm. System thickness 46 mm from rear of horizontalrail to front face of tile.

- Finish: TBA- Colour: TBA- Fasteners: Individual tiles are secured to the AR/130 Horizontal Support Rails by

means of standard, adjustable and fixed brackets.- Number and Location of Fasteners: Each tile is to be secured by 4No fasteners.- Joint Type:

Horizontal Joint: Open joint.Vertical Joint: Open joint.Joint Width: Horizontal Joint; 8mm: Vertical joint, 8mm.

- Air Gap: Not less than 50mm, as CWCT requirements for open jointed rainscreensystems. This 50mm to be measured from the rear face of the Ceramictiles.Secondary Support/ Framing System: Ceramic Granite Rainscreen Systemto be fixed to blockwork support structure using requisite cleats, verticalaluminium extrusions etc, to achieve adequate performance.

- Manufacturer: James and Taylor as above.


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- Product Reference: Consult James and Taylor for recommendations and details.- Material: Typically secondary aluminium support rails, with aluminium fixed and

floating cleats as necessary. Stainless steel rivets to be used to connect theCeramic Granite Rainscreen System to the secondary support.

- Fasteners: Consult James and Taylor for recommendations and details.Number and Location: Consult James and Taylor for recommendations and

details.- Backing Wall: Dense concrete blockwork.

- Thermal insulation: 100mm Rockwool Rainscreen duo insulation.- Breather membrane: Tyvek frame wrap.

130 ALUMINIUM PANEL RAINSCREEN CLADDING: Type CW7

To be read with Preliminaries/ General conditions.

- MATRIX 1 HONEYCOMB RAINSCREEN SYSTEM

P1.1.1 METAL PROFILED COMPOSITE RAINSCREEN CLADDING FOREXTERNAL WALLSManufacturer and reference: PSP metal faade solutions

Unit 11, all saints industrial estateShildon, co. Durham, UK. DL4 2RDTEL 01388 770 490FAX 01388 778 068

Metal panel drained/back ventilated rainscreen cladding Structurally laminateddouble skin and honeycomb core composite panel Bespoke.

Panel thickness: Nominal 30 mmFront skin 0.9mm coloured anodised aluminium sheeting grade

EN AW-3004.Internal skin material Rear skin: 0.7mm Galvatite substrate of hot dipped

zinc coated steel to BS EN 10 147

Internal skin finish White liner (nominal thickness) coating of pre finishedpolyester stoved to the substrate.

Internal skin colour Standard white.

Core: Commercial grade aluminium honeycomb designed tooffer the following features:

Use Temperatures up to 350oFHigh Thermal ConductivityFlame ResistantExcellent Moisture and Corrosion ResistanceFungi ResistantLow Weight/High Strength


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Standard core thickness 28mm(alternative core thicknesses are available to suitspan and wind loading criteria)

Panel Supports2 invertedgalvanised channels fixed vertically, with front cloaking channel to matchfrom skin. Size, gauge and locations to be determined by span.

Structural supportStructural concrete Framing and masonry walls.

Joints: Nominal 15mm recessed Horizontal.

Fixings: Panels secret fixed direct to vertical channels.Channels fixed direct to steelwork

FIXING CLADDING

P2.1 Structure:All primary structure is the responsibility of others. Contractors should note thefollowing:-

The primary structure should be designed to take all loads imposed by the claddingsystem.

In order to achieve an acceptable elevational line on the finished facade the tolerancesof the primary structure must be considered.

The primary structure must be within tolerance before handover to following trades.

P2.6 Manufacturer/Installers:

The system, manufactured by PSP LTD, must be detailed and installed by a PSPApproved Installation Contractor.

P2.6.1 Design: All design details/specifications are to be approved by Architect/Agent before

manufacture.

P2.6.2 Production Information: Drawings and manufacturing information will be prepared, based upon information

provided under P2.6 standard specifications and details (non-project specific) areavailable on request.

P2.7 MANUFACTURING ACCURACY

P2.7.1Finished dimensions of completed units to be such that the cladding, when erected,

complies with clause P2.8.1 and all sizes fall within the indicated permissibledeviations.


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P2.8 SYSTEM TOLERANCES

P2.8.1 PANELS

1. Permitted deviation of overall panel width +1.5mm -1.5mm2. Permitted deviation in panel length

For panel lengths up to 2400mm +1.5mm -1.5mmFor panel lengths over 2400mm +2mm - 2mm

3. Maximum permitted deviation in length oftwo opposite sides of panels + 1mm - 1mm

4. Squareness of panels:

When the longest of two adjacent sides of panel is taken as the base line, thedeviation of the shorter side measured from a perpendicular to the baseline shallnot exceed. +1.5mm -1.5mm

5. Flatness:

The cellular honeycomb core is cut to 0.2mm tolerance, which provides anexceptionally flat surface for skin bonding. This method of composite assemblyprovides extreme optical panel flatness.

To establish panel flatness, panels should be measured under ambient factorytemperature and humidity. The tolerances do not take into account any thermalexpansion or contraction.

ManufactureMetal skins are coated with a non-flammable, two part polyurethane basedlaminating adhesive, which has a low viscosity and provides foaming to ensuremaximum coverage is achieved. The adhesive is applied by an automateddiamond bead application system which has a co-ordinated conveyor-feed

system to ensure all items achieve consistent coverage. The core is positionedbetween the metal skins and the assembly is structurally bonded within a heatedplaten press.

P4.1 FASTENINGS GENERALLY: Type(s), size(s), material(s) and finish(s) asspecified, or in the absence of such specification, as recommended for thepurpose by fixing specialist, as recommended in BS 5427, clause 23.

P4.2 SUB-STRUCTURE:Contractors should note the following:-

The sub-structure should be designed to transfer all loads back to the primarystructure.

In order to achieve an acceptable elevational line on the finished facade, thetolerances between the sub-structure and the primary structure must beconsidered and a means of adjustment should be incorporated.

Secondary steelwork tolerance must be 5mm.The sub-structure must be within tolerance before the installation of the claddingsystem.

TECHNICAL INFORMATION AND SPECIFICATIONS STATED WITHIN THISDOCUMENT ARE A GENERAL GUIDE ONLY AND ARE SUBJECT TO


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CHANGE WITHOUT NOTICE. PSP LtdDO NOT ACCEPT RESPONSIBILITYFOR ERRORS OR FOR ANY INFORMATION FOUND TO BE MISLEADING.PLEASE CHECK WITH PSPLtdTO CONFIRM INDIVIDUAL PROJECTSPECIFICATIONS

GENERAL REQUIREMENTS/ PREPARATORY WORK

210 DESIGN- Rainscreen cladding system and associated features: Complete detailed design

in accordance with this specification and the preliminary design drawings andsubmit before commencement of fabrication.

- Related works: Coordinate in detailed design.

220 SPECIFICATION- Compliance standards: The Centre for Window and Cladding Technology

(CWCT) Standard for systemised building envelopes.- Reference information: For the duration of the contract, keep available at the

design office, workshop and on site copies of:- The Centre for Window and Cladding Technology (CWCT) Standard forsystemised building envelopes.

- Publications invoked by the CWCT Standard for systemised buildingenvelopes.

230 INFORMATION TO BE PROVIDED DURING DETAILED DESIGN- Submit the following cladding particulars:

- A schedule of detailed drawings and dates for submission for comment.- A schedule of loads that will be transmitted from the rainscreen cladding to the

structure.- Proposed fixing details and systems relevant to the structural design and

construction with methods of adjustment and tolerances.- A schedule of fabrication tolerances/ size tolerances.- A detailed testing programme in compliance with the Main Contract master

programme.- A detailed fabrication and installation programme in compliance with the Main

Contract master programme.- Proposals to support outstanding applications for Building Regulation consents

or relaxations.

232 Quality plan- Requirement: Submit during detailed design.- Content: In accordance with BS 5750 and including the following:

- Name of the quality manager.- Quality assessment procedures.- Inspection procedures to be adopted in checking the work.- Stages at which check lists will be used and samples of the lists.- List of work procedures on the correct use of materials or components, both off

site and on site.- List of product information with latest revisions.- Subcontractors involved in the work.- Subcontractors quality plans.


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- Storage, handling, transport and protection procedures.- Procedure for registering and reporting non compliances.- Maintenance procedures and calibration records.- Certification that completed work complies with specification.- Check list register to ensure all items have been inspected and non

compliances discharged.

235 INFORMATION TO BE PROVIDED BEFORE COMMENCEMENT OF TESTINGOR MANUFACTURE OF RAINSCREEN CLADDING SYSTEM

- Submit the following cladding particulars:- Detailed drawings to fully describe fabrication and installation.- Detailed calculations to prove compliance with design/ performance

requirements.- Project specific fabrication, handling and installation method statements.- Certification for incorporated components manufactured by others confirming

their suitability for proposed locations in the rainscreen cladding.- Recommendations for spare parts for future repairs or replacements.

- Recommendations for safe dismantling and recycling or disposal of products.

250 SAMPLES OF FIXINGS- General: During detailed design, submit labelled samples of each type of fixing,

together with manufacturers' recommended torque figures.

260 FABRICATION SAMPLES- General: During detailed design, submit samples of: Typical honeycomb panel

and sill flashingObtain approval of appearance before proceeding.

DESIGN/ PERFORMANCE REQUIREMENTS

310 CWCT 'STANDARD FOR SYSTEMISED BUILDING ENVELOPES'- General: Unless specified or agreed otherwise comply with:

Part 2 - Loads, fixings and movement.Part 3 - Air, water and wind resistance.Part 4 - Operable components, additional elements and means of access.Part 5 - Thermal, moisture and acoustic performance.Part 6 - Fire performance.Part 7 - Robustness, durability, tolerances and workmanship.

- Project performance requirements specified in this subsection: Read inconjunction with CWCT performance requirements.

335 INTEGRITY OF VENTILATED RAINSCREEN CLAD WALLS- Requirement: Determine sizes and thickness of panels, sizes, number and

spacing of fixings, configuration and location of secondary support systems andincorporation of other accessories and fittings to ensure the cladding system,primary support structure and other elements forming the rainscreen wall willresist factored dead, imposed and design live loads, and accommodatedeflections and movements without damage.


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- Wind loads: Calculate to BS 6399-2 appropriate to location, exposure, height,building shape and size, taking account of existing and known future adjacentstructures.

- Hard body impact loads to BS 8200:- Location and category: All areas

- Soft body impact loads to BS EN 14019: Location and classification: All areas- Temporary imposed loads: All areas

350 DEFLECTION UNDER WIND LOAD- Requirement: For listed components, at positive and negative applications of the

design wind pressure, normal deflections are not to exceed: To ContractorsDetermination

- Additional stiffness to CWCT Standard for systemised building envelopes clause3.5.4.2: To Contractors Determination

360 WIND RESISTANCE - CYCLIC LOADING- Requirement: No reduction in the integrity of the rainscreen cladding must occur

when subjected to the test sequence given in CWCT Standard for systemisedbuilding envelopes, clause 8.14.6.- Test method: As clause 665.

370 APPEARANCE AND FIT- Requirement: Design rainscreen wall:

- To ensure position and alignment of all parts and features as shown onpreliminary design drawings.

- To accommodate deviations in the primary support structure.- Primary support structure: Before commencing installation of rainscreen cladding

system, carry out survey sufficient to verify that required accuracy of erection canbe achieved.

- Give notice: If the structure will not allow the required accuracy or security oferection.

380 GENERAL MOVEMENT- Requirement: Rainscreen cladding must accommodate anticipated building

movements as follows: To Structural Engineers Determination

385 THERMAL MOVEMENT - SERVICE TEMPERATURE RANGES- Requirement: To CWCT Standard for systemised building envelopes clause

2.7.2

420 WATER PENETRATION

- Watertightness class to BS EN 12154- Peak test pressure: To CWCT table 1.1

425 Wind load serviceability and safety of rainscreen panels - cyclic wind loading- Method of determination: To CWCT standard for systemised building envelopes


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440 AVOIDANCE OF CONDENSATION- Requirement: Psychrometric conditions under which condensation must not form

within or on the interior surface of the rainscreen wall or any surface of the wallthat is on the warm side of insulation are:- Notional outdoor psychrometric conditions as BS 6229, table A1.- Notional indoor psychrometric conditions:

Temperature: 20C .Relative humidity: 50%Vapour pressure: 1.17kPa

- Winter interstitial condensate:- Calculated amount (maximum): 0.35 kg/m.

Calculated annual net retention: Nil.

450 VAPOUR CONTROL LAYER- Interstitial condensation risk within rainscreen wall: Determine using the method

described in BS 5250, Annex D. If necessary, provide a suitable vapour controllayer to ensure that damage and nuisance from interstitial condensation does not

occur. Refer to Detail drawings CD/65662/201 - 218

495 DURABILITY- Relevant agents or degradation mechanisms: Coastal situation- Design life of the rainscreen cladding system: Not less than 50 years- Secondary components: Submit details together with required maintenance

regime, replacement periods and methods of replacement.

497 LIGHTNING PROTECTION SYSTEM- Rainscreen components used as part of lightning protection system: To

Engineers Determination

TESTING

520 PROJECT TESTING (SITE)- Timing of testing: At an agreed stage during preliminary installation on site

arrange for testing of a section of rainscreen cladding in accordance with relevantclauses of this specification.

- Continuation of installation of general areas of rainscreen cladding: Not until sitetest results and reports showing compliance with this specification have beensubmitted.

530 TESTING AUTHORITY

- Requirement: Project testing must be carried out by a United KingdomAccreditation Service (UKAS) approved independent laboratory.

535 TESTING AUTHORITY- Requirement: Project testing must be carried out by the rainscreen cladding

manufacturer/ contractor and is to be witnessed and certified by: agreed with CA

665 WIND LOAD FATIGUE TEST, SMALL SPECIMEN


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- Requirement: To CWCT Standard for systemised building envelopes, Standardtest methods for building envelopes Section 14.- Test sequence: to be agreed with CA- Effective wind pressure: As clause 360.

672 SITE TESTING OF FIXINGS- Requirement: To CWCT Standard for systemised building envelope, Standard

test methods for building envelopes Section 19.- Type of test: Serviceability

- Peak load: 1.5 times design load- Number and location of test fixings: To be agreed with CA

680 SITE SPRAY BAR TEST- Requirement: To CWCT Standard for systemised building envelopes, Standard

test methods for building envelopes Section 10.- Area to be tested: To be agreed with CA- Pressure difference across rainscreen wall: NA

685 SITE HOSE TEST- Requirement: To CWCT Standard for systemised building envelopes, Standard

test methods for building envelopes Section 9.- Joints to be tested: To be agreed with CA

PRODUCTS

710 ALUMINIUM ALLOY FRAMING SECTIONS- Standards: To BS EN 755 alloy EN AW-6063 and suitable for the specified finish.- Structural members: To comply with BS 8118.

712 ALUMINIUM ALLOY SHEET- Standards: To BS EN 485, BS EN 515 and BS EN 573.- Alloy, temper and thickness: Suitable for the application and specified finish.

715 CARBON STEEL FRAMING SECTIONS/ REINFORCEMENT- Standards: To the relevant parts of BS 7668, BS EN 10029, BS EN 10025, and

BS EN 10210.- Thickness: Suitable for the application, and for galvanizing or other protective

coating.

717 CARBON STEEL SHEET

- Standards: To the relevant parts of BS 1449-1, BS EN 10048, BS EN 10051, BSEN 10111, BS EN 10131, BS EN 10132, BS EN 10139, BS EN 10140, BS EN10149, BS EN 10209, and BS EN 10268.

- Grade and thickness: Suitable for the application, and suitable for galvanizing orother protective coating.

720 STAINLESS STEEL SHEET- Standards: To the relevant parts of BS EN 10029, BS EN 10048, BS EN 10051,

BS EN 10095, BS EN 10258, BS EN 10259.


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- Grade: To BS EN 10088-2, austenitic 1.4301 (304) generally, 1.4301 (316) whenused externally or in severely corrosive environments.

- Thickness: Suitable for the application.

725 TIMBER BATTENS- General: Regularized softwood free from decay, insect attack (except ambrosia

beetle damage) and with no knots wider than half the width of the section.- Preservative treatment: As section Z12 and British Wood Preserving and Damp-

proofing Association Commodity Specification C8.- Type: To be agreed with CA

- Moisture content at time of fixing (maximum): 19%.

730 MECHANICAL FIXINGS - MECHANICAL REQUIREMENTS- Stainless steel: To BS EN ISO 3506 grade A2 generally, grade A4 when used in

severely corrosive environments.- Carbon steel: To BS 4190 and suitable for galvanizing or other protective coating.- Aluminium: To BS EN 755.

732 ADHESIVES- General: Not degradable by moisture or water vapour.

735 FIXINGS AND FASTENERS- Type and use: Reviewed and approved by manufacturers. Submit confirmatory

information on request.- Dimensions: Not less than recommended by their manufacturers.- Adjustment capability: Sufficient in three dimensions to accommodate primary

support structure and rainscreen cladding fabrication/ installation tolerances.

760 GASKETS

- Material:- Noncellular rubber to BS 4255-1.- Cellular rubber to ASTM-C509.

- Durability: Resistant to oxidation, ozone and UV degradation.

765 WEATHERSTRIPPING OF OPENING UNITS- Material:

- Noncellular rubber to BS 4255-1.- Cellular rubber to ASTM-C509.- Polypropylene woven pile, silicone treated.

- Installation: Fixed in undercut grooves in framing sections using preformedcorners with any joints in the length.

770 GENERAL SEALANTS- Selection: In accordance with BS 6213 from:

- Silicone to BS 5889.- One part polysulfide to BS 5215.- Two part polysulfide to BS 4254.- One or two part polyurethane.

- Classification and requirements: To BS EN ISO 11600.- Reaction to contact products and finishes: Stable and compatible.


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775 THERMAL INSULATION- Material: DuoSlab rock wool insulation as per drawings 06562/CD/201 - 218

- Properties: Durable, rot and vermin proof and not degradable by moisture orwater vapour.

- Fixing: Attached to the outer face or supported within the backing wall so as notto bulge, sag, delaminate or detach during installation or in situ during the life ofthe rainscreen cladding.

780 VAPOUR CONTROL LAYER- Material: Visqueen vapour barrier

- Minimum vapour resistance: 200MN.s/g- ManufacturerVisqueen Building Products, Maerdy Industrial Estate, Rhymney,

Tredegar, NP22 5PYtel: 01685 840672fax: 01685 842580

Product reference: Visqueen Vapour Barrier- Continuity: No breaks and with the minimum of joints.

- Penetrations and abutments: Seal to vapour control layer. If necessary, primesubstrates to achieve full bond.- Sheet laps: Not less than 150 mm, seal with tape. Prime substrates as

necessary to achieve full bond.- Sheet tape: Double sided sealant with vapour resistivity not less than the vapour

control sheet.- Size (width and thickness): 2.45m &125mu

- Sheet repairs and punctures: Seal with lapped patch of vapour control membraneand continuous band of sealant tape along edges.

785 BREATHER MEMBRANE- Material: vapour permeable membrane

- Manufacturer: Tyvek Housewrap- Product reference: Tyvek Housewrap (1060b)- Continuity: No breaks. Minimize joints.

- Penetrations and abutments: Attach to breather membrane with tape. Achievefull bond.

- Laps: Not less than 150 mm, bond with tape. Achieve full bond.- Tape: As recommended by breather membrane manufacturer.- Repairs: Lapped patch of breather membrane material secured with continuous

band of tape on edges.- Junctions at flashings, sills, gutters etc. Overlap and allow free drainage to

exterior.

FINISHES

810 PROTECTIVE COATING OF CARBON STEEL FRAMING SECTIONS/REINFORCEMENT

- Treatment: All surfaces to one of the following:- Hot dip galvanized to BS EN ISO 1461.- An appropriate equivalent coating to BS 5493, BS EN ISO 12944 and BS EN

ISO 14713.


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820 PROTECTIVE COATING OF CARBON STEEL MECHANICAL FIXINGS- Treatment: All surfaces to one of the following:

- Hot dip galvanized to BS EN ISO 1461.- Sherardized to BS 4921, class 1 coating thickness and passivated.- Zinc plated to BS EN 12329, coating designation of FE//Zn//C for an iridescent

(yellow passivate) chromate conversion coating or FE//Zn//D for an opaque(olive green) chromate conversion coating.

830 POWDER COATING- Requirement: As section Z31.

840 ANODIZING- Requirement: As section Z33.-

850 Polyvinylidene fluoride (pvdf) coating- Standards: To BS 4842, AAMA 2604-05 or AAMA 2605-05, subject to minimum

coating thicknesses recommended by the manufacturer on all significant

surfaces.- Applicator: Contractors determinationProduct reference: Contractors determination

- Process: Prepare base metals, prime, PVDF coat, test samples, protectcomponents and repair damage in accordance with manufacturer'srecommendations.

- Sequence: Wherever possible, apply coatings after fabrication is complete.- Fabrication of prefinished lengths: Submit proposals beforehand.- Uncoated edges: Invisible in completed assemblies.

FABRICATION AND INSTALLATION

910 GENERALLY- Electrolytic corrosion: Take necessary measures to prevent.- Identification of products: Mark or tag to facilitate identification during assembly,

handling, storage and installation. Do not mark surfaces visible in the completeinstallation.

912 METALWORK- Requirement: As section Z11, unless specified otherwise in this section.

915 TIMBER TREATMENT- Requirement: As section Z12, unless specified otherwise in this section.- Exposed cut and drilled surfaces: Treat with two flood coats of a solution

recommended for the purpose by main treatment solution manufacturer.

920 GLAZING- Requirement: As section L40, unless specified otherwise in this section.- Directional patterned/ wired glass: Fix generally parallel to surround and align

adjacent panes where seen together at close quarters.

922 FIXINGS/ ADHESIVES APPLICATION- Requirement: As section Z20, unless specified otherwise in this section.


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925 SEALANT APPLICATION- Requirement: As section Z22, unless specified otherwise in this section.

930 ASSEMBLY- Location: Carry out as much assembly as possible in the workshop.- Joints: Other than movement joints and designed open joints, must be rigidly

secured, reinforced where necessary and fixed with hairline abutments.- Displacement of components in assembled units: Submit proposals for

reassembly on site.

960 PRELIMINARY RAINSCREEN CLADDING INSTALLATION- Requirement: Complete an area of cladding as set out below for inspection and

approval of appearance.Eest facade adjacent to existing flint building

970 RAINSCREEN CLADDING INSTALLATION- Tightening mechanical fasteners: To manufacturer's recommended torque

figures. Do not overtighten fasteners intended to permit differential movement.- Protective coverings: Remove only where necessary to facilitate installation andfrom surfaces which will be inaccessible on completion.

975 WELDING- In situ welding: Not allowed

980 INTERFACES- Installation: Locate flashings, closers etc. correctly and neatly overlap cladding to

form a weathertight junction.

985 Damage

- Repairs: Do not repair cladding without approval.- Approval: Will not be given where the proposed repair will impair performance

or appearance.- Record of repairs: Prepare schedule or record on drawings for inclusion in the

maintenance manual.

995 Maintenance- Maintenance manual: Incorporate details within the Building Manual in

accordance with CWCT Standard for systemised building envelopes clause7.6.1.


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K10 PLASTERBOARD DRY LININGS/ PARTITIONS/ CEILINGS

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TYPES OF DRY LINING

110 METAL STUD PARTITION SYSTEM.Refer to GAs for location of partition type.

- Partition type: single row studs 70mm, double layer linings.- Partition height: maximum 4400mm.- Head condition: concrete floor slab soffit.

- Deflection allowance: 15mm maximum.- Structural performance: severe.

- Strength grade to BS 5234-2: SD.Additional tests: none.

- Air pressure and deflection: 200N/m and 1/240.

- Other requirements: at underside of roof extend into deck profile and form airtight seal with foil faced tape.- Fire resistance of complete partition assembly: to BS 476-20 and -22, 60/60

minutes (integrity/insulation) partition fire rating to suit location.- Airborne sound insulation:

- Weighted sound reduction index Rw (minimum) to BS EN ISO 717-1: 53dB.- Board and Framing Manufacturer: British Gypsum Limited.- Stud centres: 600mm.- Insulation: Isover - Isowool apr 1200.

- Thickness: 50mm.- Linings: One layer of 13mm Wall board.- Finishing: seamless jointing as clause 670.

- Other requirements: fire stopping around services as section P12.

205 LINING ON TIMBER TO DUCTS- Background: 50 mm x 100mm timber studs at 400mm centres.- Metal resilient (acoustic) bars: As required by manufacturer.- Linings: 13mm plasterboard to BS 1230.

- Fixing: nails.- Finishing:Jointing as clause 670.

- Primer/ Sealer: As required by manufacturer.- Accessories: As required by manufacturer.

- Other requirements: Fire stopping around service penetrations as section P31.Insulate around pipes concealed within ducts.

225 SUSPENDED CEILING SYSTEM WITH PLASTERBOARD FINISH Type C3

- Manufacturer: British Gypsum Limited .- Product reference: Casoline MF concealed grid.

- Structural soffits: Concrete.- Suspension system:

- Hanger type: steel strap hangers.Top fixings: screwed to deck.


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- Primary grid centres: 1200mm.Hanger centres: 1200mm.

- Secondary grid centres: 600mm.- Linings: 13mm Gyproc wallboard.- Insulation: none.- Access units: panels to clause 431.- Finishing: seamless jointing as clause 670.- Other requirements:

- services fittings luminaries and ventilation grilles (lay-in grid and cut-outs),fire alarm detectors, drop rods for patient hoist track.

- Requirements: drop rods for luminaries in double height spaces, fitting firealarm detectors

INSTALLATION

335 ADDITIONAL SUPPORTS

- Framing: Accurately position and securely fix to give full support to:- Partition heads running parallel with, but offset from main structural supports.- Fixtures, fittings and service outlets. Mark framing positions clearly and

accurately on linings.- Board edges and lining perimeters, as recommended by board manufacturer to

suit type and performance of lining.

375 NEW WET LAID BASES- Dpcs: Install under full width of partitions/ freestanding wall linings.

- Material: Bituminous sheet or plastics.

435 DRY LININGS GENERALLY

- General: Use fixing, jointing, sealing and finishing materials, components andinstallation methods recommended by board manufacturer.

- Cutting plasterboards: Neatly and accurately without damaging core or tearingpaper facing.- Cut edges: Minimize, and position at internal angles wherever possible. Maskwith bound edges of adjacent boards at external corners.

- Fixing boards: Securely and firmly to suitably prepared and accurately levelledbackgrounds.

- Finishing: Neatly to give flush, smooth, flat surfaces free from bowing and abruptchanges of level.

445 CEILINGS

- Sequence: Fix boards to ceilings before dry lined walls and partitions.- Orientation of boards: Fix with bound edges at right angles to supports and with

ends staggered in adjacent rows.- Two layer boarding: Stagger joints between layers.

455 METAL FRAMING FOR PARTITIONS/ WALL LININGS- Setting out: Accurately aligned and plumb.

- Frame/ Stud positions: Equal centres to suit specified linings, maintainingsequence across openings.


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- Additional studs: To support vertical edges of boards.- Fixing centres at perimeters (maximum): 600 mm.- Openings: Form accurately.

- Doorsets: Use sleeved or boxed metal studs and/ or suitable timber framing toachieve strength grade requirements for framing assembly and adequatelysupport weight of door.

- Services penetrations: Allow for associated fire stopping.

475 METAL FURRINGS FOR WALL LININGS- Setting out: Accurately aligned and plumb.

- Vertical furring positions: Equal vertical centres to suit specified linings,maintaining sequence across openings. Position adjacent to angles andopenings.

- Additional vertical furrings: To support vertical edges of boards and at junctionswith partitions.

- Horizontal furring positions: To provide continuous support to edges of boards.- Adhesive bedding to furrings:

- Dabs: Length 200 mm (minimum). Located at ends of furrings and thereafter at450 mm (maximum) centres.- Junctions with partitions: Continuous bed with no gaps across cavity.

485 SUSPENDED CEILING GRIDS- Setting out: Accurately aligned and level.

- Grid members and hangers: Centres to suit specified linings and imposedloads.

- Additional grid members: Provide bracing and stiffening at upstands, partitionheads, access hatches, etc.

- Fixing: Securely at perimeters, grid joints, top and bottom hanger fixings.

505 INSTALLING MINERAL WOOL INSULATION- Fitting insulation: Closely butted joints and no gaps. Use fasteners to prevent

slumping or displacement.- Services:

- Electrical cables overlaid by insulation: Sized accordingly.- Ceilings: Cut insulation around electrical fittings, etc.

510 SEALING GAPS AND AIR PATHS- Location of sealant: To perimeter abutments and around openings.

- Pressurized shafts and ducts: At board-to-board and board-to-metal framejunctions.

- Application: To clean, dry and dust free surfaces as a continuous bead with no

gaps.- Gaps greater than 6 mm between floor and underside of plasterboard: After

sealing, fill with jointing compound.

555 FIRE STOPPING AT PERIMETERS OF DRY LINING SYSTEMS- Material: Tightly packed mineral wool or intumescent mastic/ sealant.- Application: To perimeter abutments to provide a complete barrier to smoke and

flame.


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560 JOINTS BETWEEN BOARDS- Tapered edged plasterboards:

- Bound edges: Lightly butted.- Cut/ Unbound edges: 3 mm gap.

- Square edged plasterboards: 3 mm gap.- Square edged fibre reinforced gypsum boards: 5 mm gap.

565 VERTICAL JOINTS- Joints: Centre on studs.

- Partitions: Stagger joints on opposite sides of studs.- Two layer boarding: Stagger joints between layers.

570 HORIZONTAL JOINTS- Surfaces exposed to view: Horizontal joints not permitted. Seek instructions

where height of partition/ lining exceeds maximum available length of board.- Two layer boarding: Stagger joints between layers by at least 600 mm.- Edges of boards: Support using additional framing.

- Two layer boarding: Support edges of outer layer.

580 INSULATION BACKED PLASTERBOARD- General: Do not damage or cut away insulation to accommodate services.- Installation at corners: Carefully cut back insulation or plasterboard as

appropriate along edges of boards to give a continuous plasterboard face, with nogaps in insulation.

590 FIXING PLASTERBOARD TO METAL FRAMING/ FURRINGS- Partitions/ Wall linings: Fix securely and firmly at the following centres

(maximum):

- Single layer boarding: To all framing at 300 mm centres. Reduce to 200 mmcentres at external angles.

- Multi-layer boarding: Face layer at 300 mm centres, and previous layersaround perimeters at 300 mm centres.

- Ceilings: 230 mm. Reduce to 150 mm at board ends and at lining perimeters.- Position of screws from edges of boards (minimum): 10 mm.

- Screw heads: Set in a depression. Do not break paper or gypsum core.

592 FIXING INSULATION BACKED PLASTERBOARD TO METAL FURRINGS- Fixing to furrings: In addition to screw fixings apply continuous beads of adhesive

sealant to furrings.

610 FIXING PLASTERBOARD TO TIMBER- Fixing to timber: Securely at the following centres (maximum):

- Nails: 150 mm.- Screws to partitions/ wall linings: 300 mm. Reduce to 200 mm at external

angles.- Screws to ceilings: 230 mm.

- Position of nails/ screws from edges of boards (minimum):- Bound edges: 10 mm.- Cut/ Unbound edges: 13 mm.


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- Position of nails/ screws from edges of timber supports (minimum): 6 mm.

620 FIXING PLASTERBOARD WITH ADHESIVE DABS- Setting out boards: Accurately aligned and plumb.- Fixing to substrates: Securely using adhesive dabs.- Adhesive dab spacings for each board:

- Horizontally: One row along top edge and one continuous dab along bottomedge.

- Vertically: One row along each edge and thereafter at intermediate spacings tosuit size of board:

Thickness (mm) Width (mm) Dab centres (mm)9.5 1200 4009.5/12.5 900 45012.5 1200 600

- Adhesive dab dimensions (width x length): At least 50-75 mm x 250 mm.- Position of dabs from edges/ ends of boards (minimum): 25 mm.

625 FIXING INSULATION BACKED PLASTERBOARD WITH ADHESIVE DABS- Fixing to substrates: In addition to adhesive dab fixings, secure boards withnailable plugs in locations recommended by board manufacturer.

630 FIXING INSULATION BACKED PLASTERBOARD WITH ADHESIVE SPOTS- Setting out boards: Accurately aligned and plumb.- Fixing to substrates: Securely using adhesive spots and mechanical fastenings.- Adhesive spot spacings to each board: Four vertical rows, at 400 mm centres in

each row.- Adhesive spot diameters (minimum): 25 mm.- Mechanical fasteners: Nailable plugs in locations recommended by board

manufacturer.

FINISHING

650 LEVEL OF DRY LINING ACROSS JOINTS- Sudden irregularities: Not permitted.- Joint deviations: Measure from faces of adjacent boards using methods and

straightedges (450 mm long with feet/ pads) to BS 8212, clause 3.3.5.- Tapered edge joints:

Permissible deviation (maximum) across joints when measured with feetresting on boards: 3 mm.

- External angles:Permissible deviation (maximum) for both faces: 4 mm.

- Internal angles:Permissible deviation (maximum) for both faces: 5 mm.

670 SEAMLESS JOINTING TO PLASTERBOARDS- Cut edges of boards: Lightly sand to remove paper burrs.- Filling and taping: Fill joints, gaps and internal angles with jointing compound and

cover with continuous lengths of paper tape, fully bedded.- Protection of edges/ corners: Reinforce external angles, stop ends, etc. with

specified edge/ angle bead.


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- Finishing: Apply jointing compound. Feather out each application beyondprevious application to give a flush, smooth, seamless surface.

- Nail/ Screw depressions: Fill with jointing compound to give a flush surface.- Minor imperfections: Remove by light sanding.

680 SKIM COAT PLASTER FINISH- Plaster type: As required by board manufacturer.

- Thickness: 2-3 mm.- Joints: Fill and tape except where coincident with metal beads.- Finish: Tight, matt, smooth surface with no hollows, abrupt changes of level or

trowel marks.

695 INSTALLING BEADS/ STOPS- Cutting: Neatly using mitres at return angles.- Fixing: Securely using longest possible lengths, plumb, square and true to line

and level, ensuring full contact of wings with substrate.- Finishing: After joint compounds/ plasters have been applied, remove surplus

material while still wet from surfaces of beads exposed to view.

725 REPAIRS TO EXISTING PLASTERBOARD- Filling small areas with broken cores: Cut away paper facing, remove loose core

material and fill with jointing compound.- Finish: Flush, smooth surface suitable for redecoration.

- Large patch repairs: Cut out damaged area and form neat hole with rectangularsides. Replace with matching plasterboard.- Fixing: Use methods to suit type of dry lining, ensuring full support to all edges

of existing and new plasterboard.- Finishing: Fill joints, tape and apply jointing compound to give a flush, smooth

surface suitable for redecoration.


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K21 WOOD STRIP/ BOARD FINE FLOORING/ LININGS

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To be read with Preliminaries/ General conditions

TYPES OF FLOORING/ LINING

145 LAMINATE FLOORING AND SKIRTING: type F12 and SK12- Substrate: Concrete Screed- Preparation: Allow screed finish to fully dry prior to installation of finishes..- Underlay: Quick step Combi floor underlay.- Flooring:

- Manufacturer: UNILIN Flooring - Quick-StepOoigemstraat 38710 WielsbekeBelgium. tel. +32 56 675211

- Standard: To BS EN 13329.Class: Class 33.

- Colour/ Pattern: U896 Natural varnished oak planks.- Method of fixing: None: Floating floor with click-fix T&G joints.- Accessories: 100mm high skirtings in finish to match.

160 WOOD WALL LINING ON BATTENS- Substrate: New blockwork walling- Battens: Regularized softwood free from decay and active insect attack and with

no knots wider than half the width of the section.- Finished size: 25x18mm.- Moisture content at time of fixing: Not more than 14%.- Spacing: 400mm ctrs .- Method of fixing: plugged and screwed.

- Strips/ Boards: Free from decay, through splits and insect attack (includingambrosia beetle damage, unless permitted in the appearance class specified).Planed to a smooth surface free from rippling.

- Wood species: Oak.- Appearance class/ Grade: Clear graded .- Profile: Tougued and grooved V jointed.- Finished face width: 100mm.- Finished thickness: 18.- Moisture content at time of fixing: 9-13%.

- Fixing: Secret nailed.- Fasteners: 35mm oval lost head nails .

- Finish: Clear varnish finish.

GENERAL/ PREPARTION

210 WORKMANSHIP GENERALLY- Moisture content of timber supports: 12-14%.- Methods of fixing and fasteners: As section Z20 where not specified.- Protection: Protect from dirt, stains and damage using suitable coverings and

boards laid as the work proceeds.


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220 ENVIRONMENTAL CONDITIONS- General requirements prior to starting work specified in this section: Building

weathertight, wet trades completed and affected areas dried out.- Temperature and humidity before, during and after installing strips/ boards:

Maintained at levels approximating to those which will prevail after building isoccupied.

250 FIXTURES- Fixtures around which strip flooring is to be fixed: Installed before starting work

specified in this section.

260 DRYNESS OF CONCRETE/ SCREED SUBSTRATES FOR FLOORING- Relative humidity above substrate when tested with a hygrometer to BS 8201,

Appendix A (maximum): 75%. Test points: All corners, around perimeter, and random points over area being

tested.- Drying aids: Turned off for not less than four days before testing.

270 STRIP/ BOARD MOISTURE CONTENT TESTING- Test regime and equipment: Submit proposals.- Test results: Submit record of tests and results.

FIXING/ FINISHING

330 FIXING BATTENS- General: Battens spaced evenly, packed or adjusted as necessary to give a true,

level, finished surface, and fixed securely.

335 TREATED TIMBER

- Surfaces exposed by minor cutting and drilling: Treated with two flood coats of asolution recommended for the purpose by main treatment solution manufacturer.

350 FIXING STRIPS/ BOARDS- Strips/ Boards: Fixed securely to each support with flat, true surfaces free from

undulations, splits, hammer marks, scratches and protruding fastenings.- Movement of timber: Allowed for when positioning strips/ boards and fastenings

to prevent cupping, springing, opening of joints or other defects.- Heading joints (where permitted): End matched, butted and, where applicable,

positioned centrally over supports and distributed across the flooring to achieve arandom effect.

360 EXPANSION PROVISION- Expansion gaps:

Edges of flooring: Parallel to lie of strips/ boards and 10mm wide. Ends of flooring: 10 mm wide.

- Spacer blocks and debris: Removed before fixing skirtings/ cover fillets.- Intermediate expansion/ movement joints: Formed as recommended by flooring

manufacturer/ supplier.


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380 FINISH TO LINING- Exposed fastener heads: Punched or set below surface and filled with stopping to

match wood.- Strips/ Boards: Sanded to give a clean, smooth and flush surface free from score

marks.- Finish: Clear Varnish


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K32 PANEL CUBICLES

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K32 PANEL CUBICLES


120 PANEL CUBICLES TO TOILET AND SHOWER AREASProduct Reference UltimaManufacturer: Amwell Systems Ltd, Thundridge Business Park, Cambridge Road,Thunbridge, Herts, SG12 0SU Tel +44 (0)1920 486793 Fax +44 (0)1920 486829

Or equal and approved

- Duct Wall, Partition Panels, Pilasters & Doors:- Core material: 19mm high density melamine faced moisture and shower

resistant chipboard .- Finish/Colour to Partition Panels, Pilasters & Doors: To be agreed.- Finish/Colour To be agreed.- Edge treatment: 1 mm solid impact resistant PVC lipping to all visible edges of

panels. Colour matched with light textured panel facing .- Headrails: Powder coated aluminium P style head rail section with 1mm PVCinsert. Colour ref: Dark Grey.

- Legs: Adjustable polyester powder coated aluminium pedestal, through fixed, withintegrated polypropylene floor shroud. Colour ref: To be agreed.

- Ironmongery/ Accessories:- Continuous slender powder coated aluminium hinge, with integrated clip in

cover and nylon adjustable bearing cams. Colour ref: To be agreed.- Powder coated aluminium lock body and slider, with polished ABS face plate.

Colour ref: To be agreed.- Polypropylene coat hooks. Colour ref: To be agreed.

- Other requirements: Pilasters to be fabricated from 17mm thick high density

melamine faced moisture resistant chipboard faced both sides with 1mm thicktextured high-pressure laminate with vertical edges in Quadra 8 pencil radius,with polyolephin enhanced core.

210 SAMPLES- General: Before placing orders submit representative samples of the following:

Items listed in clause 120.- Delivered materials/ products: To match samples.

230 PROTECTION- Doors and panels: Stack flat on bearers and separate by spacers where

necessary to prevent damage to or from projections.

- Completed cubicles: Keep clean and dry, and adequately protect from damageuntil completion.

250 INSTALLATION- Programming: Do not install cubicles before building is weathertight, wet trades

have finished their work, wall and floor finishes are complete, and the building iswell dried out.

- Accuracy: Set out to ensure frames and/ or panels and doors are plumb, leveland accurately aligned.


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K32 PANEL CUBICLES

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- Modifications: Do not cut, plane or sand prefinished components except whereshown on drawings.

- Method of fixing: Secure cubicle components using methods and fastenersrecommended by the cubicle manufacturer. Do not distort frames, panels anddoors.

- Hinges: Adjust so that doors hang open or closed with CA approval.


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K40 DEMOUNTABLE SUSPENDED CEILINGS

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TYPES OF CEILING SYSTEM

110 UNIT SUSPENDED CEILING SYSTEM Type C1- Structural soffits: Concrete Slab.- Ceiling system manufacturer: SAS International Ltd. 31 Suttons Business Park,

London Road, Reading. RG6 1AZ. Tel: 0118-929 0900, Fax: 0118-929 0902, orequal and approved.- Product reference: SAS System 150.- Grid form: Non-interlocking.- Grid exposure: Concealed.

- Access: Fully demountable.

- Ceiling module: Generally 600mm x 600mm.- Ceiling soffit above finished floor level: Generally 2700mm.- Components:- Suspension system: SAS concealed clip-in Omega section.- Perimeter trim: SAS polyester powder coated aluminium extrusion TCA

0128.- Access units: SAS Zintec polyester powder coated steel ceiling panels with a

bevel edge and twin locating pips, tile RAL 9010 20% gloss. Panels to have aplain unperforated face. Panels required to receive integrated services to besupplied with factory formed rectangular apertures to appropriate dimensionsCircular, nonflanged, apertures can be provided for downlighters, sprinklers etc.

- Colour/Finish: All visible components to be finished in Polyester powder Anti

Bacterial coating Ral 9010 with 20% gloss level. Coating to be applied atmanufacturers own facility with powder from a single batch and source of supplyto ensure best colour match. Specialist ceiling contractor is to provide prior tocommencement on site, 2 number samples (hand sized) of all polyester paintcomponents to be incorporated in the works with Manufacturers/Supplierscertification of 1000 hour Salt Spray (Fog) test performance.

112 UNIT SUSPENDED CEILING SYSTEM Type C2- Structural soffits: Concrete Slab.- Ceiling system manufacturer: SAS International Ltd. 31 Suttons Business Park,

London Road, Reading. RG6 1AZ. Tel: 0118-929 0900, Fax: 0118-929 0902, orsimilar approved.

- Product reference: SAS System 205.- Grid form: Non-interlocking.- Grid exposure: Concealed.

- Access: Fully demountable.- Ceiling module: 250mm x 1685mm.- Ceiling soffit above finished floor level: Generally 2350mm.- Components:- Suspension system: Suspension bracket 50 x 100 x 1.6mm with J-Bar

suspension rail 38 x 35 x 1.25mm.


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- Perimeter trim: Closure Angle 35 x 100 x 0.7mm.- Access units: 1685mm x 300mm SAS Zintec polyester powder coated steel

ceiling panels with a bevel edge and twin locating pips, tile RAL 9010 20% gloss.Perforation pattern 1522 with a nominal 10mm plain border. A fully enclosedmineral fibre pad incorporating black acoustic fleece shall be sealed into the tilesin order to achieve an acoustic absorption coefficient of 0.86.

- Fixed units: 1685mm x 300mm SAS Zintec polyester powder coated steel ceilingpanels with a bevel edge and twin locating pips, tile RAL 9010 20% gloss.Perforation pattern 1522 with a nominal 10mm plain border. Luminaire mountedwithin site-formed opening centred on panel face. A fully enclosed mineral fibrepad incorporating black acoustic fleece shall be sealed into the tiles in order toachieve an acoustic absorption coefficient of 0.86.

- Colour/Finish: All visible components to be finished in Polyester powder AntiBacterial coating Ral 9010 with 20% gloss level. Coating to be applied atmanufacturers own facility with powder from a single batch and source of supplyto ensure best colour match. Specialist ceiling contractor is to provide prior tocommencement on site, 2 number samples (hand sized) of all polyester paint

components to be incorporated in the works with Manufacturers/Supplierscertification of 1000 hour Salt Spray (Fog) test performance.

GENERAL/ PERFORMANCE

203 DEFINITIONS- Ceiling: Items collectively constituting the ceiling surface i.e. infill units/boards,

access units and grid.- Ceiling system: Ceiling plus suspension system and integrated services fittings.

COMPONENTS

215 SAMPLES- General: Submit representative samples.

217 SUSPENSION SYSTEM- Extent of system: Include hangers, fixings, main runners, cross members, primary

channels, perimeter trims, splines, noggings, clips, bracing, bridging, etc., whichare necessary to complete the ceiling system and achieve performance.

- Materials: galvanised steel- Top fixings: as recommended by manufacturer.- Hangers: flexible.- Grid type: T15 main runner.- Finish: standard manufacturers.

- Colour: white 010.

219 PERIMETER TRIMS- Type: Connect angle trim, finish to match main grid.

- Fixings to perimeters: plug and screw to masonry.- Fixing centres (maximum): 450mm.

INSTALLATION


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305 SETTING OUT- General: Accurate, continuous, even, and jointed at regular intervals.

- Soffits: Free from undulations, lipping and distortions in grid members.- Infill and access units, integrated services: Fitted correctly and aligned.- Edge/ perimeter infill units size (minimum): Half standard width or length.- Corner infill units size (minimum): Half standard width and length.- Grid: Position to suit infill unit sizes.

- Permitted deviations from nominal sizes: Allow for.- Infill joints and exposed suspension members: Straight, aligned and parallel to

walls.- Suitability of construction:Give notice where building elements and features to

which the ceiling systems relate are not square, straight or level.

310 BRACING

- General: Secure, with additional bracing and stiffening to give a stable ceilingsystem resistant to design loads and pressures.

315 PROTECTION- Loading: Do not apply loads for which the suspension system is not designed.- Ceiling materials: Remove and replace correctly using special tools and clean

gloves, etc. as appropriate.

320 TOP FIXING- Building structure: Verify suitability.

- Concrete: Drill and insert suitable expanding anchors.- Aerated concrete: Fix through from the top of the concrete unit and provide a

system of primary channels.- Structural steel: Drill, or use suitable proprietary clips/ adaptors.

- Hollow structural members: Submit fixing proposals.- Cartridge or powder activated methods: Do not use.

360 INSTALLING HANGERS- Wire hangers: Straighten and tension before use.- Installation: Install vertical or near vertical without bends or kinks. Do not allow

hangers to press against fittings, services, insulation covering ducts/pipes.- Obstructions: Where obstructions prevent vertical installation, either:

- brace diagonal hangers against lateral movement; or- hang ceiling system on an appropriate rigid sub-grid bridging across

obstructions and supported to prevent lateral movement.- Extra hangers: Provide as required to carry additional loads.

- Fixing:- Wire hangers: Tie securely at top with tight bends to loops to prevent vertical

movement.- Angle/strap hangers: Do not rivet for top fixing.

- Spacings: 450mm.

380 INSTALLING PERIMETER TRIMS- Jointing: Neat and accurate, without lipping or twisting.

- External and internal corners: Mitre joints.


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- Intermediate butt joints: Minimize. Use longest available lengths of trim. Alignadjacent lengths.

- Fixing: Fix firmly to perimeter wall or other building structure.- Fixing centres: 450mm.

384 CONCEALED GRIDS- Grid fixings:- Primary support channels: Install level. Adjust level with supporting hangers taut.

Do not level by kinking or bending hangers.- Wire hangers wrapped around primary channels: Wrap twice and tightly form

loops.- Angle/strap hangers: Do not rivet for bottom fixing.

- Splines: Locate between infill units to level adjacent units and to resist airmovement at joints.

- Spring-tee grids: Do not omit primary channel.

386 INSTALLING INFILL UNITS

- General:- Cut perimeter infill units: Trim to full space between last grid member andperimeter trim. Prevent subsequent movement.

- Deeply textured infill units: Minimize variations in apparent texture and colour.In particular, avoid patchiness.

- Concealed grids: Install infill units uniform, straight and aligned. Avoid dimensioncreep.- Infill units around recessed luminaires and similar openings: Prevent

movement and displacement.

387 UPSTANDS AND BULKHEADS- Vertical ceiling systems: Support and brace to provide alignment and stability.

- High upstands: Provide support at base of upstand.

390 OPENINGS IN CEILING MATERIALS- General: Neat and accurate. Suit sizes and edge details of fittings. Do not distort

ceiling system.

395 INTEGRATED SERVICES- General: Position services accurately, support adequately. Align and level in

relation to the ceiling and suspension system. Do not diminish performance ofceiling system.

- Small fittings: Support with rigid backing boards or other suitable means. Do notdamage or distort the ceiling.

- Surface spread of flame rating of additional supporting material: Match ceilingmaterial.

- Services outlets:- Supported by ceiling system: Provide additional hangers.- Independently supported: Provide flanges to support ceiling system.

396 CEILING MOUNTED LUMINAIRES- Support: independent


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- Independently supported luminaires: Adjustable suspension to line and level ofceiling.

- Ceiling supported luminaires:- Surface mounted luminaires: Do not inhibit designed grid expansion in fire.- Modular fluorescent recessed luminaires: Compatible with ceiling module.

Extension boxes must not foul ceiling system.- Recessed rows of luminaires: Provide flanges for support of grid and infill units,

unless mounted above grid flanges. Retain in place with lateral restraint.- Fire protecting/resisting ceiling systems: Luminaires must maintain protection

integrity of ceiling system.- Access: Provide access for maintenance of luminaires.

398 MECHANICAL SERVICES- Fan coil units:

- Inlet and outlet grilles: Trim ceiling grid and infill units to suit.- Space beneath: Sufficient for ceiling system components.- Suspension and connections: Permit accurate setting out and levelling of fan

coil units.- Air grilles and diffusers:- Setting out: Accurate and level.- Linear air diffusers: Provide flanges for support of grid and infill units. Provide

for displacement of ceiling grid. Retain in place with lateral restraint.- Grille/diffuser ceiling joints: Provide smudge rings and edge seals.

- Smoke detectors and PA speakers:- Infill units: Scribe to suit.- Independent suspension: as required by Mechanical Engineer/Structural

Engineer- Flexible connections: Required.

- Sprinkler heads: Carefully set out and level.

400 INSTALLING INSULATION- Fitting: Fit accurately and firmly with closely butted joints and no gaps.- Insulation within individual infill units: Fit closely. Secure to prevent displacement

when infill units are installed or subsequently lifted. Reseal cut dustproof sleeving.- Width: Lay insulation in the widest practical widths to suit grid member spacings.- Services: Do not cover electrical cables not sized accordingly. Cut insulation

carefully around electrical fittings, etc. Do not lay insulation over luminaires.- Sloping and vertical areas of ceiling system: Fasten insulation to prevent

displacement.

425 INSTALLING CAVITY FIRE BARRIERS

- Fire resistance to BS 476-20:- Integrity/ insulation: 30 minutes .

- Material: Fire Barrier 50mm thickness .- Ceiling void subdivision areas (maximum): 20 metres .- Fixing:

- General: Fix firmly to channels or angles at abutments to building structure.- At perimeters and joints: Secure. Provide permanent stability and continuity

with no gaps. Provide a complete barrier to smoke and flame.- Joints: Form to preserve integrity in fire.


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- Service penetrations: Cut and pack to maintain barrier integrity. Sleeve flexiblematerials. Adequately support services passing through the barrier.

- Ceiling systems intended for fire protection: Do not impair fire resistingperformance of ceiling system.

- Ceiling systems not intended for fire protection: Do not mechanically interlinkbarriers with ceiling system.

500 ELECTRICAL CONTINUITY AND EARTH BONDING- Substantial conductive parts of the ceiling system: Electrically continuous and

fully earth bonded to carry prospective earth fault currents.- Standard: To BS 7671.

- Sequence: Complete earth bonding as soon as possible after completion of eachindependent area of suspension system.

- Testing: After completion of the ceiling system, associated services and fittings,test conductive parts of suspension system required to carry earth fault current,or used as bonding connections. Give notice before testing.- Electrical continuity: Measure from various distant conductive points of ceiling

system and to earth bar in distribution board serving the area.- Test current: Sufficient to indicate probable electrical performance under faultconditions.

- Test instrument: Type providing a pulse of about 25 A at safe voltage for safeduration, and indicating resistance in ranges 0-2 W and 0-20 W.

- Resistance of measuring conductors: Deduce from test instrument readings.- Test readings: Record and certify. Add results to resistance of other parts of

the path forming the earth fault loop.

COMPLETION

520 USER INSTRUCTIONS- Contents: Include the following:

- Correct methods for removing and replacing infill units and other components.- Cleaning methods and materials.- Recommendations for redecoration.- Ceiling systems intended for fire protection: Limitations placed on subsequent

alterations and maintenance procedures, to ensure that their fire performanceis not impaired.

- Maximum number, position and value of point loads that can be applied toceiling system after installation.

530 SPARES

- General: At Practical Completion supply the following: 1 box of each of the infilltile types.


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M10 CEMENT BASED LEVELLING/ WEARING SCREEDS

1




TYPES OF SCREED

111 CEMENT:SAND LEVELLING SCREED TO REINFORCED CONCRETE FLOOR- Base: In situ concrete slab.- Screed type: Partially Bonded as clause 270.- Nominal thickness:.

- Thickness): 65 mm.- In situ crushing resistance (ISCR): As clause 335 Class condition B.

- Mass of test weight: Test to BS 8204-1, Annex D.- Depth of indentation (maximum): 4mm.

- Flatness/ Surface regularity: Maximum permissible deviation when measured asclause 346: 5mm.

- Finish:- Method: Trowelled as clause 540.

112 CEMENT:SAND LEVELLING SCREED TO REINFORCED CONCRETE ROOFSLAB

- Base: In situ concrete slab.- Screed type: Partially Bonded as clause 270.- Nominal thickness:.

- Thickness): 20 mm min 65mm max. Laid to 1:60 falls- In situ crushing resistance (ISCR): As clause 335 Class condition B.

- Mass of test weight: Test to BS 8204-1, Annex D.- Depth of indentation (maximum): 4mm.

- Flatness/ Surface regularity: Maximum permissible deviation when measured asclause 346: 5mm.

- Finish:- Method: Trowelled as clause 540.

GENERALLY/ PREPARATION

205 DESIGN LIFE OF SCREEDS- Duration: 50 years.

- Subject to reasonable wear and tear.- Location: All areas with floor screed.- Condition of use: Subject to correct loading and traffic usage throughout duration.

210 SUITABILITY OF BASES- General:

- Suitable for specified levels and flatness/ regularity of finished surfaces.Consider permissible minimum and maximum thicknesses of screeds.

- Sound and free from significant cracks and gaps.- Cleanliness: Remove plaster, debris and dirt.


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- Moisture content: To suit screed type. New concrete slabs to receive fully orpartially bonded construction must be dried out by exposure to the air forminimum six weeks.

215 SURFACE HARDNESS OF BASES TO RECEIVE POLYMER MODIFIEDWEARING SCREEDS

- General: Bases must restrain stresses that occur during setting and hardening ofwearing screeds.

- Test for surface hardness: To BS EN 12504-2 using a rebound hammer withcompliance values selected from the following:- Screed thickness Rebound hammer value

15 mm or less Greater than 25Greater than 15 mm Greater than 30

- Report: Submit details of areas where base surface hardness does not complywith these values.

220 PROPRIETARY LEVELLING/ WEARING SCREEDS- General: Materials, mix proportions, mixing methods,: minimum/ maximumthickness and workmanship must be in accordance with recommendations ofscreed manufacturer.

270 PARTIALLY BONDED CONSTRUCTION- Preparation: Generally in accordance with BS 8204-1.- Base surface: Brushed finish with no surface laitance.

- Texture of surface: Suitable to accept screed and achieve a bond overcomplete area.

- Bonding coat: Slurry as clause 275 .

275 CEMENT SLURRY BONDING- Slurry type: SBR polymer modified cement.- Application: Shortly before laying screed, thoroughly wash clean the surface and

keep well wetted for several hours. Remove free water then brush in cementslurry bonding coat of creamy consistency.

- Screeding: While slurry is still wet.

BATCHING/ MIXING

305 AGGREGATE STANDARDS- Cement: Portland to BS EN 197-1, class 42.5 or Portland blast furnace to BS

146, class 42.5.- Sand: To BS EN 12620.

- Grading limit: To BS 8204-1, table 1.- Coarse aggregate: To BS EN 12620.

330 MIXING- Water content: Minimum necessary to achieve full compaction, low enough to

prevent excessive water being brought to surface during compaction.


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- Mixing: Mix materials thoroughly to uniform consistency. Mixes other than no-fines must be mixed in a suitable forced action mechanical mixer. Do not use afree fall drum type mixer.

- Consistency: Use while sufficiently plastic for full compaction.- Ready-mixed retarded screed mortar: Use within working time and site

temperatures recommended by manufacturer. Do not retemper.

335 IN SITU CRUSHING RESISTANCE (ISCR)- Standards and category: To BS 8204-1, table 4.

- For testing of bonded screeds refer to Annex D.- For testing of floating screeds refer to Annex E.

Class Service Indentationconditions depthA Heavy use 3 mmB Normal use 4 mm

C Light use 5 mm

340 ADVERSE WEATHER- Screeds surface temperature: Maintain above 5 C for a minimum of four days

after laying.- Hot weather: Prevent premature setting or drying out.

LAYING

345 LEVEL OF SCREED SURFACES- Permissible deviation: 10 mm from datum (allowing for thickness of coverings).

355 FLATNESS/ SURFACE REGULARITY OF FLOOR SCREEDS- Sudden irregularities: Not permitted.- Deviation of surface: Measure from underside of a 3 m straightedge (between

points of contact), placed anywhere on surface using a slip gauge to BS 8204-1or -2 (or equivalent).

- Surface regularity standards:- SR1: 3 mm high standard.- SR2: 5 mm normal standard.- SR3: 10 mm ut

division 09 finishes final

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