cchecklist for supervision

7/30/2019 Cchecklist for Supervision

http://slidepdf.com/reader/full/cchecklist-for-supervision 1/46

CHECK LISTS FOR SUPERVSION

2. INVESTIGATION AND PREPARATION OF SITE

CHECK: -

2.1 The site visually if underground utilities cross it

2.2 The site on maps showing the location of underground structures and utilities to avoid

breaking them during construction.

2.3 The site plan and lay out of buildings and swear system specially concerning levels

and soil condition. If changes are necessary submit a written report to the designer.

2.4 The area to be cleared off and take measurements.

2.5 The trees and bushes with in the foundation to be cut and rooted up as given in thestandard technical specification.

2.6permission is obtained from local authorities to cut down trees outside the foundation

areas.

2.7 Besides lines are agreed with local municipality and corner stones placed.

2.8 The connection points for water and electricity are agreed up on with local

authorities.

2.9 All necessary temporary drains are considered to keep the site free of water.

3.SETTING OUT

CHECK: -

3.1 The setting out is done correctly with proper measuring tape and accurate leveling

instrument.

3.2 All measurements to confirm the accuracy and correct locations of working areas are

properly stated out.

3.3 The elevation reference point in accordance with the survey map, and confirm.

3.4 All bottom of trenches and floor levels are according to the elevations Shown on the

drawings.

4. EXCAVATION & EARTH WORK

CHECK :-



4.1 Check all top soil is excavated separately

4.2 Decide the place to pile up the suitable excavated material and check it is 12 meters

out side the building perimeter.

4.3 Decide the place for the cart away, which is not necessary for backfilling or terracing.

4.4 For sites where blasting is proposed, the explosives are used in the qualities and

manner recommended by the manufactures. Check a written consent is obtained on each

occasion the contractor wished to use explosives.

4.5 All excavations are carried out to the lines, levels, widths and depths shown on the

drawings.

4.6 Any Discrepancies in levels, depositions etc. are reported to the engineer prior to

proceeding with the works.

4.7 all Necessary temporary drains and culverts are constructed to keep the site free of

water.

4.8 Slopes to embankments, cuttings, shoulders, ditches etc; are trimmed to the

dimensions and inclinations shown on drawings.

4.9 Cut for roads s carried out until a level of suitable material in allowed.

4.10 Excavation are suitable by trimmed and leveled before any concrete or masonry

work is placed.

4.11 In location where the soil is subject to softening during excavation, a bottom layer of

soil removed immediately before the placing of concrete in accordance with the standard

technical specification.

5. FOUNDATION TRENCH & PIT EXCAVATION

CHECK

5.1 The foundation drawings to correspond with the conditions on the site, if not prepared

a written report and submit to the designer immediately.

5.2 The foundation depth, width, line and levels to correspond the drawings

5.3 The excavation or foundation is executed 25cm. wider on each side than the thickness

or the foundation wall as given in the standard technical specification.

5.4 The trench and pits to be clean from grass, busbes and piecen of wood.

5.5 The trench and pits to be kept free of water by pumping or other means.



5.6 The foundation engineer has accepted the excavated foundation depth by filling from

No 005.

5.7 The foundation excavation is suitably trimmed and leveled before concrete of


5.8 In the event of over excavation, without approval the area to be filled with selected

excavation or borrowed material or class 5 concrete in accordance with the standard


5.9 The faces of excavation is retained with sheeting the Bering, strutting and shoring to

protect workmen and prevent damage where necessary.

6. FOUNDATION IN STONE MASONRY

CHECK: -

6.1 The trench to be cleaned from grass, bushes and pieces of wood.

6.2 The stone is of the type given on specifications.

6.3 The stone to be hard, sound, free from cracks and decay and not weathered.

6.4 The stone is freshly quarried from an approved quarry.

6.5 The stone masonry excavation is with specified mortar and with well filled joints.

6.6 The stone masonry during excavation is kept free from solid and other kind of dirt.

6.7 The strength of stone does not exceed three times its height.

6.8 The mix proportion of mortar is correct.

7. BACK FILLING

CHECK:-

7.1 All internal backfilling is done with approved material, if possible with material

excavated on this site.

7.2 All external backfilling around foundation walls and behind retaining walls should be

done with approved selected materials, if possible with material excavated on the site,

which is capable of being composted and from a stable filling.



7.3 All organic materials, such as pieces of wood, roots, bushes and block cotton soil are

removed from all back fill material.

7.4 All ground trenches and places where backfilling shall be executed are clean from

grass, bushes and pieces of wood.

7.5 Where pipes and electrical cables are in connection with the backfilling, the work

shall be executed very carefully, so they do not break or get damaged.

7.6 All Backfilling to be in layers and compacted to 95% of maximum dry density in

accordance with the standard technical specification.

7.7 Each layer to be well remained and consolidated with the addition of water as

necessary to achieve the required compaction.

7.8 The maximum layer of fill for one time compaction does not exceed 20 cm, thickness

in accordance with the standard technical specification.

7.9 Depressions or voids that are created during trimming of slopes to embankments,

cutting, shoulders, ditches etc. are filled with suitable material and to approved

compaction.

7.10 Any material which after repeated compactions does not fulfill the requirements

shall be removed and replaced.

8 HARD CORE

CHECK: -

8.1 stone for hard-core is sound and approved quality.

8.2 All stone in the hard-core are of approximately equal and recommended size.

8.3 All hard-core is wall rammed and consolidated with the top surface blinded with

crushed aggregate of 20 mm thickness in accordance with the standard technical

specification.

8.4 The thickness of the hard-core satisfies the specification or design.8.5 The placing of stones to result in minimum voids.

9 CONCRETE

CHECK: -



9.1 All ingredients cement, aggregates and water are of the type and quality specified.

9.2 Cement is fresh, not older than six months and is delivered to the site in the

manufacture’ s original sealed bags.

9.3 Cement is stored in a dry and well-ventilated store, on a wooden floor raised

minimum 20 cm above the ground.

9.4 Cement is stocked separately

9.5 The cement has marking the type and date of consignment pinned to it and check it is

used in the order of its arrival.

9.6 Cement more than six months old after production is tested to satisfy the specified

requirements,

9.7 Sand or fine aggregate to be clean river or pits sand of approved quality and consist of

hard, dense durable uncoated rock fragments.

9.8 Sand to be clear of impurities like dust mica & organic matter.

9.9 Rejected samples of aggregates are removed from the site with in 254 hours.

9.10 Coarse aggregate to be crushed basaltic stone or gravel of approved quality.

9.11 Coarse aggregate to be hard, dense, durable non-porous and uncoated rock

fragments.

9.12 Coarse aggregate to be free from impurities like clay, soft thin elongated or

laminated piece shall be free from alkali and organic matter.

9.13 The graduation of coarse aggregate to comply with the standard technical

specification.

9.14 Before any coarse aggregate is delivered to the site, the quality is approved at the

quarry by the designer.

9.15 Aggregated are store on clear hard surface to prevent contamination by soil.

9.16 Different grades are stocked independently.

9.17 Water used for mixing concrete is clean and free from injurious amounts of oil,

acids, alkalis, and organic materials.

9.18 Water is not taken from see or tidal rivers to be used for structural concrete. If

possible water shall be piped or otherwise stored in an enclosed container free from

contamination.



9.19 If there are any doubts about the quality of the water a sample shall be sent to the

designer or consultant for testing.

9.20 If the temperature of the water exceeds 600c it is first mixed with the aggregate

before the cement is added.

9.21 The concrete is mixed to a uniform colour and consistency prior to placing.

9.22 Hand mixing is not allowed be if available shall be used only for class II concrete

and shall under no circumstance be allowed for concrete of class C-20 and higher.

9.23 Concrete is mixed in an approved mechanical batch mixer machine; the mixer is

thoroughly cleaned from hardened concrete and other kind of dirt before use.

9.24 Mixer which has been out of use for more than 20 minutes is thoroughly washed

before any fresh concrete is mixed as specified in the standard technical specification.

9.25 The mixer drum is tight to avoid loss of mortar. The valve must not lack mixing

water.

9.26 The specified mixing time is carefully adhere to nut in no case shall the mixing

discontinue for less than 2 minutes after adding water as specified in the standard


9.27 The batch capacity. The contractor must not be allowed to exceed the rated capacity

of the specification.

9.28 The materials enter the drum rapidly

9.29 The whole of the mixed batch is removed before materials for fresh batch enter the

mixer.

9.30 Mixed concrete is not modified by the addition of extra water or cement, in order to

facilitate handling or any other purpose

9.31 Before any casting starts at the site test cube of side dimension 15x15x15 or

cylinders of diameter 15cm and length 30cm of wood or steel are made ready.

9.32 For any one structure samples are made at the same time from the same batch and

the date clearly marked on each cube.

9.33 Test cubes are when directed but not less than one set of nine cubes from each

100m3 of concrete placed or if the rate of placing is less than 100m 3 then each 10 days or

every floor for multi-storey structures in accordance with the standard technical

specification.



9.34 These cubes of each set are tested at 3 and 7 or 7 and 14 days and the third at 28

days all in accordance with the code of practice.

9.35 In the absence of approved design mix that the standard mixes in table 8,5, 3a and

table 8,5,3b or the mix design given in the standard technical specification are followed.

9.36 Before any casting starts the consistence of fresh concrete must be measured using

the slump test from the same batch for test cubes.

9.37 Concrete is so transported as rapidly as practicable and placed such that

contamination, segregation or loss of constitute materials does not occur.

9.38 All placing of concrete starts from one end and continue in the some direction with

out any break.

9.39 Concrete is deposit as near a practicable and on concrete is dropped from a beight

exceeding & meters as specified on the standard technical specification.

9.40 When chutings is used the inclination of the chute shall be such as to allow the

concrete to flow with out the use of water in excess of the specified volume for mix and

without segregation or loss of the ingredients details of any proposed chutting plant must

be approved before the plant is delivered.

9.41 The vibration is carefully done and continues until a dense homogeneous mass is

produced and surface is fairly smooth.

9.42 Concrete is not over vibrated so that the consistency of the concrete is maintained

and separation of materials is caused.

9.43 If construction joints are necessary they are approved by the designer.

9.44 When concrete casting continues on a construction joint, the joint is clean from

foreign matter.

9.45 When concrete casting continues on a construction joint, the surface of the joint is

roughened and aggregate is exposed with out being damaged.

9.46 The roughened surface of the construction joint is wetted with thin layer of mortar

prior to concreting.

9.47 After casting is completed and for 7 days thereafter, that the concrete is kept damp

(cured) to minimize loss of moisture from the concrete.

9.48 Inspection prior to concreting.

CHECK :-



♦ The rigidity of the scaffolding and shuttering

♦ The leck-tightness of joints between formwork elements

♦ Conformity of the dimensions of the formwork with the (drawings)

♦

The cleanliness of the formwork ♦ The surface condition of the reinforcement

♦ The position and size of reinforcement

♦ The rigidity of the reinforcement securing systems, and the quality of the joints

between bars.

♦ Cover to reinforcement is correct.

♦ Class of concrete, mix design and water cement ratio.

9.49 Precast concrete is cast under sheds and remain in the moulds for 3 days and further 7 days after removal from the moulds. then removed from the sheds and stocked in the

open for at least 7 days to season.

9.50 Random load testing is made on the prior units and the damaged ones immediately

replaced.

9.51 Precast units are casted and placed in proper position in such a way as to avoid

overstressing or damaging the units nor causing damage to previously erected structure.

9.52 If any doubt about the quality of aggregate, cement, reinforcement and water arises

resample are sent for testing.

10 PLESTRESSED CONCRETE

CHECK :-

10.1 All prestressing components are stored in clean dry conditions.

10.2 All prestressing component are clean and free from loose must at the time of fixing

in position and subsequent concreting.

10.3 All prestressing tendons are not welded with in the length to be tensioned.

10.4 All prestressing tendons (cables) are not twisted and individual wires of standards

are identifiable at each member.

10.5 All ducts and tendons are respectively sealed and protected until the tendon is

threaded through and the stressing operations are commenced



10.6 All anchor cones; blocks and plates are positioned and maintained during concreting

such that the centerline of the duct passes axially through the anchorage assembly.

10.7 All bearing surface of the anchorages are clean prior to concreting and tensioning.

10.8 The tendons immediately and during stressing do not exceed the strength specified.

10.9 Stressing is from both ends unless required or agreed by the engineer.

10.10 The tendons are anchored only if the prestressing is applied to the satisfaction of

the engineer

10.11 The jack pressure in releaned in such a way as to avcid shock to the anchorage or

tendons.

10.12 If the pull-in of the tendons at completion of anchoring is greater than that agreed

by the engineer, the load shall be released slowly and tensioning carried out afreab.

10.13 Sufficient that cubes are taken and specified transfer strength is attained.

10.14 The tendons are not cropped or cut prior to 3 days after grouting

10.15 Full records of all tensioning operations including the measured extensions,

pressure guage of load all readings and the amount of pull-in at each anchorage are kept.

10.16 All ducts are thoroughly leaned by compressed air or method specified prior to

grouting.

10.17 All achorages are sealed before grouting

10.18 The ducts are completely filled with ground

10.19 The field ducts are protected to the satisfaction of the engineer that they are not

subjected to a back or vibration for one day.

10.20 Full records of grouting including the date each duch was grouted is kept.

10.21 The grout mixer produces a grout of colloidal and uniform consistency.

10.22 The grout is mixed for a minimum of two minutes unless otherwise specified.

10.23 No admixtures like ebloride or nitrates are used. But if other admixture may be

used a written permission must be submitted from the engineer and check it is spilled

strictly with the manufacture’s insurrection.

10.24 The grcut consists only of ordinary Portland cement and water unless otherwise

specified.

10.25 Prestressed members are lifted of supported only at the points specified and

handled and placed with out impact.



10.26 Beams are prevented from moving laterally during the placing of the in situ

concrete.

10.27 The engineer informed in advance of the data of commencement of manufacture

and the dates when tensioning of tendons, casting of members and transfer of stress will

be undertaken for the first time for each type of beam.

20.28 All prestressed concrete construction comply with the standard technical

specification.

11 FORMWORK

CHECK:-

11.1 Formwork is so constructed that it can be stripped from the bardened concrete easily

without bammering of with out such shock or vibration in order to protect the concrete or

reduce labour cost.

11.2 The bracing of the formwork. The formwork must be strong enough to carry the

load until the concrete is strong enough to carry itself and hardened sufficiently.

11.3 The inside surface of formworks shall, except for permanent formworks, of unless

otherwise agreed by the engineer, are coated with a releases agent.

11.4 Release agents do not come in to contact with the reinforcement and acnchborages,

and should not be visible on the finished works.

11.5 Wooden formworks for unexposed concrete surface, are executed of sawed boards

with sharp edges and of the same thickness.

11.6 Wooden formworks for exposed concrete surface are generally of tongued and

grooved boards of the same thickness and free from knots, holes, cracks, and splits.

11.7 Formwork timber shall be kept under shed and in varying thickness and width and

shall be constantly aerated and under weight to prevent it from decay.

11.8 Before and concreting starts, check the formwork has the right dimension and is

level and straight.

11.9 Before and concreting starts, all form works are thoroughly cleaned out and free

from holes and dirt.

11.10 The top level of the formwork is at the same level as the top of the finished

concrete.



11.11 All formwork is removed without any damage to the concrete during the striking.

11.12 After removed of the formwork remedial treatment to surfaces of the hardened

concrete is carried out immediately with out delay and period of removal is as follows.

For vertical formwork to columns walls & beams ----------------16 hrs,

For soffit formwork to slab ------------------------------------------ 21 days

For propos to slab ----------------------------------------------------- 14 days

For soffit formwork to beams --------------------------------------- 21 days

For propos to beams --------------------------------------------------- 14 days

In accordance with the standard technical specification

11.13 Where intended to re-use formwork it is throughly cleaned and made good to the

satisfaction of the engineer.

11.14 Stripping of formwork not to be done until concrete is set i.e should ring under a

hammer below. In on circumstance shall formwork be struck until the concrete stains

cube strength of at least twice the street to which it may be subjected at the time of

striking.

11.15 All formwork construction and quality comply the standard technical specification.

12 STEEL REINFORCEMENT

CHECK:-12.1 Steel reinforcement is stored in clean condition. It should be free from loose rust.

12.2 All reinforcement bars are of the specified quality and in accordance with the

standard technical specification

12.3 Given in the design in case where certificates for ultimate tensile strength, yield

stress, elongation and cold bend tests are not issued by the manufactures.

12.4 The dimension length and shape of the reinforcement bars is according to the

drawings and specifications.

12.5 Bending of reinforcement bars is done with adequate to bending tools, But heat is

strictly not allowed for bending of reinforcement bars.

12.6 All bars with cracks or splits at the bend are not used for construction.

12.7 All mild steel have their ends, blocks, and the bending radius meets the

specification.



12.8 All reinforcement bars are clean and free from close rust, grease, oil or tar and other

kind of dirt.

12.9 The reinforcement bars are placed in position according to the drawings, and firmly

bound together with mild steel wire, diameter 1.6 mm in accordance with the standard


12.10 Before any casting concrete starts, that pre cast concrete blocks or spacers or metal

chairs are prepared and all reinforcement bars are placed on them.

12.11 These blocks or spacers do not turn cover when concrete is casted.

12.12 The thickness of concrete cover is according to the requirements of the drawing

and specification.

12.13 And approve the placing of the reinforcement and formwork conditions before and

concrete is casted

12.14 The reinforcement in structures are not welded unless permitted by the designer.

12.15 All reinforcement quality and work comply the standard technical specification.

13 MORTAR

CHECK

13.1 All mortar is if possible mixed in an approved mechnical batch mixer. If not

possible it could be mixed by hand until its color and consistency are uniform.

13.2 Lime for matter is freshly burnt limestone, lime shall be delivered to the site in large

sumps, slaked, run to putty and mature for not less than two weeks before use.

13.3 If hydraulic lime is used, it is stored in the same manners as described for cement.

13.4 Cement used in mortar is Portland cement and have quality as described for concrete

works.

13.5 Sand for mortar is quality as described for concrete works.

13.6 Water is of quality described for concrete works.

13.7 Cement mortar consist of cement and sand as specified. If not given in the

specification, check that cement mortar consists of one part cement to three parts of sand

(1:3) measured by volume.



13.8 Compo mortar consist of cement, line and sand as specified, If not specified, check

that the compo mortar is composed of one part cement two parts of lime and nine parts of

sand 1:2:9) measured by volume.

13.9 Cement mortar is used with in 30 minutes of the duration of cement.

14 STONE MASONRY WALL

CHECK:-

14.1 Stone is of type given as specification

14.2 The stone is hard sound, free from cracks and decay and not weathered.

14.3 The stone is freshly quarried from an approved quarry.

14.4 The stone masonry execution is with specified mortar and with well finished joints.

14.5 All mortar for stone masonry bedding and jointing 20mm thick.

14.6 Stone masonry during execution is kept free from sclid and other kind of dirt.

16.7 Stone walling is carried up with no portion more than 1000 mm above adjacent wall

at any one time.

16.8 The wall is in plumb with in 3m.

16.9 Sample panel of wall not less than 1m2 in area including joint pointing as specified

is prepared and approved.

16.10 The type size and pattern of laying is as detailed on drawing.

14.11 All stone masonry walling comply with the standard technical specification.

15 HOLLOW CONCRETE BLOCK WALL

CHECK :-

15.1 The hollow concrete blocks are free from lamination, cracks and other defects that

would impair the proper seating, or permanence of the construction.

15.2 The hollow concrete blocks are well-compacted, properly cured and uniform color

and texture.



15.3 The hollow concrete blocks manufactures on the site have the quality of cement and

aggregate as described for concrete works.

15.4 All blocks are manufactured in an approved special hollow block machine and under

shed.

15.5 Before any manufacturing in big scale starts on the site, test samples are made cured

and sent for testing and test results are approved by the designer.

15.6 For curing of hollow blocks, that they are kept moist, at less for seven days after

castings.

15.7 That the blocks are properly dried under shade for at least 14 days before they are

under for construction.

15.8 Damage of blocks with defects in the walls are placed with good ones at the expence

of the contractor.

15.9 Hollow blocks and the walls are kept for from soil and other kind of dirt during

execution.

15.10 All joins vertical and horizontal are well filled with specified mortar.

15.11 Walling is carried up with no mortion more than 1000mm. Above adjacent wall at

any one time.

15.12 Partition wall are well bonded to elevation walls.

15.13 That the joints and the walls are in plumb with in 3m.

15.14 If the wall is designed on laod bearing by the designer and special care is taken for

the execution of the work.

15.15 A minimum of 6 blocks per 1000 pcs, for site manufactured blocks are tested.

15.16 the thickness of the joints do not exceed 15mm.

15.17 The compo meters is used only above ground level.

15.18 The drawings carefully before any wall construction if extra. reinforcement of

expansion joints are prescribed.

15.19 The minimum compressive strength class A, class B & class C, hollow concrete

blocks is as follows according to the standard technical specification.

CLASS AVERAGE 6 BLOCKS INDIVIDUAL BLOCKS



Class A 42kg/cm2 38kg/cm2

Class B 35kg/cm2 32kg/cm2

Class C 20kg/cm2 18kg/cm2

15.20 All hollow concrete block walling comply with the standard technical specification

16 WALLS WITH BRICKS

CHECKS:-

16.1 Bricks are not dumped on site but stocked in regular tires as they are unloaded.

16.2 Bricks to be used for different situation are stocked separately on a clean place.

16.3 Bricks are soaked in water for a minimum period of one day before use.

16.4 Sample panels of not less than 1m2 for each type of brickwork including joint

pointing for painted surfaces are prepared.

16.5 All brickwork are laid in good English boned even and true to line plumb with in

3m, level and all joints accurately kept.

16.6 All joints vertical and horizontal are well field with specified mortar.

16.7 The thickness of the joints do not exceed 10mm.

16.8 All bricks of the same dimensions are only used in to the same wall.

16.9 Brick samples are taken at random from the load apporeded and also manufactures

test certificate submitted.

16.10 All brick walling comply with the standard technical specification.

17 WOODEN WALLS



CHECK

17.1 The quality and dimensions of wood are according to specifications and drawings.

17.2 All wood for wall are well-seasoned, free from major knots, worms split and bends.

17.3 All wood for construction are stored free from the ground and well protected against

rain.

17.4 All wood if specified is treated with anti termite, liquid.

17.5 Dimension, placing and number of nails is according to drawings, unless indicated

on the drawing on wood structure shall be jointed.

17.6 The wall is plumb and level.

18 PLASTER AND POINTING

CHECK:-

18.1 The cement plaster and compo plaster quality mixture; thickness and type of surface

are according to the specification & drawing.

18.2 The cement plaster is used where water affect is expected such as in toilets,

laundries and external walls while compo mortar is used in all cases unless otherwise

specified.

18.3 Before any plaster is applied, the wall is thoroughly cleaned from dirt and dust.

18.4 All plaster is mixed in a mechanical mixer of approved type if possible.

18.5 The well depending in the material is kept wet for some time before any plaster is

applied, it’s not enough to sprinkle water just before plastering.

18.6 All pointing if pointing is prescribed is done with cement mortar.

18.6 All pointing is plumb and level.

18.8 All plastering and pointing comply with the standard technical specification.



19. STRUCTURAL STEEL WORK

CHECK

19.1 The shape and size of structural steel members comply with the requirements of the

specification and the manufacturers standards.

19.2 Size, location, elevation and plumbing of ancher holts

19.3 condition and capacity of welding equipment

19.4 conformity of electrodes to specifications and correct usage

19.5 production and assembly of steel is carried out in accordance with the detail

drawings and specification.

19.6 Steel before and after fabrication is straight and free from twist of other damages.

19.7 Cutting is done by shearing, cropping sawing or machine flame cutting.

19.8 Cutting by hand-operated flame is approved.

19.9 Sheared or cropped edges are dressed to a neat machine work and are prepared for

welding finish.

19.10 Welded sections are inspected and approved prior to priming.

19.11 The maximum gap for butt welded sections is less than 3m.

19.12 Each weld is continuous sound and with out interruption and free of creaters.

19.13 Slag is taken away immediately after welding and the weld cleared with metal

brush.

19.14 All ends of rectangular, squared and circular sections (BMS, CHS) are selected by

welding to prevent entrance of moisture.

19.15 The steel structure is security belthed to plated, channels of angles cleates during

erection.

19.16 Direct bolting to sides of steel hollow sections is not carried on.19.17 Holes for fixing electrical fittings, partitions, etc.... are correctly positioned.

19.18 All structural steel is protected from chemical solutions.

19.19 All structural steel ready to erect is prevented from water of dirt accumulated.

19.20 All steel which will have concrete cost against them are clean and free from loose

rust at the time of concreting.



19.21 All structural steel work comply with the standard technical specification.

20 PAVION (TILES PAVIOR)

CHECK:-

20.1 Before any paving starts, the mass concrete is completely free from standard water.

20.2 Cement tiles conform with the standards.

20.3 In the mass concrete surface immediately before the bedding is laid, a slurry of

cement and water is brushed, unless specified.

20 .4 The bedding is not cement mortar, one part cement to four parts sand (1:4) and the

slump in 2-5 cm and over.

20.5 The bedding thickness is 2-3cm.

20.6 The tiles are gently knocked down in to the bedding to the mortar will be forced up

in joints approximately 5cm.

20.7 When the bedding is hard enough usually after one day the joints which shall be 2-4

mm wide are filled with cements mortar.

20.8 Expansion joints are exceeded as indicated on drawings.

20.9 The complete floor under construction is protected for the first 14 days and kept wet

and is protected against damage.

21 WALL TILES

CHECK:-

21.1 Wall tiles are soaked in clean water before laying and taken out just before use.

21.2 Tiles are bedded with straight joints in cement and sand (1:3) and grouted in while

cement.

21.3 The work when completed is cleaned property before approval.

21.4 only tiles free from defects are used for the construction.



22 P.V.C TILES

CHECK :-

22.1 P.V.C tiles are laid on floor screeds with approved gule and in accordance with

manufacture’s instruction.

22.2 Only tiles free from duties are used for the construction

22.3 Damaged tiles are replaced with good ones at the contractor’s expense.

23 ROOFING AND CLADDING

CHECK :-

23.1 Asbestos cement sheets are free from visible defacts.

23.2 The surface of asbestos cement sheets of uniform texture and smooth on one.

22.3 The edges of asbestos cement sheet are square, straight and cleans.

23.4 Asbestos cement sheet unless otherwise specified is 6 mm thick when used for

roofing.

23.5 Asbestos cement accessories match the pitch of the sheets.

23.6 Galvanized plain and corrugated sheets comply the manufacture’s specifications.

23.7 Steel black bolt and nuts are zinc coated, the size and use of which shall be as per


23.8 Fixing of rooting and flashing is made fully water tight and performed to the

standard of best workmanship.

23.9 Chiseler diamond adges and convey bead mails made of mild steel round wires are

used to fix galvanized steel sheet roofing and flashing to timber members.

23.10 Steel bock bolts and nuts are used to fix galvanized steel sheets and asbestos

roofing to steel and wooden truss members and purlins.



23.11 Fixing holes are drilled in crown of corrugation of roofing sheets.

23.12 Holes are 5mm larger in diameter than bolts of screw.

23.13 Holes are 40mm far from edges of sheet.

23.14 Sheets are laid with laps not less than 150 mm.

23.15 Side laps of sheets are minimum one and helf corrugations.

23.16 Upper laps of sheets are constructed away from prevailing wind.

23.17 No person other workman in roofing habe access to toof area.

23.18 All roofing work comply with the standard technical specification.

24 GUTTERS AND DOWN PIPES

CHECK:-

24.1 Gutters and down pipes are found with the specified guage galvanizd mild steel flat

sheet from suitable lengths and to shapes shown on the drawings.

24.2 Gutter handers and down pipe supports are 2.25mm anti-rust painted flat sheet

spaced at 1meter center maximum unless otherwise specified.

24.3 Joints of gutter are lapped 15cm and welded.

24.4 Joints of gutters after welding treated with three coats of zinc paint.

25 CARPENTRY AND JOINERY

CHECK

25.1 Timber for carpentry and joinery is a specified and of best quality.

25.2 Timber is responsibly straight grained and obtained from an approved source.

25.3 And inspect the timber as it arrives, any timber not approved is removed

25.4 Timber is pen stacked for so long as possible before use.

25.5 Timber and assembly wood work are protected from rain and sun.

25.6 Timber and assembled wood work are stored in such a way as to prevent attack by

termites, insects of decayed fungi.



25.7 Timber ready for use is free from live borer bottle or other insect attack.

25.8 All measures to eradcate insect attack of timber are approved.

25.9 Timber is seasoned to measure content of not more than 20% for carpentry and 12%

for joinery.

25.10 All timber surface exposed by cutting are treated with three coats of approved

preservations.

25.11 All pressure impregnated timber in treated with preservative chemicals at a

pressure of not less than 10 atmospheres and in accordance with the chemical


25.12 Fixed joinery is completely protected from damage until the completion of

construction.

25.13 profile of sections is not modified from those shown drawings with out approval

25.14 Each type of door is fixed in the right place and that the door swing in accordance

to the drawing.

25.15 Door from and window frames are fixed straight and in plumb

25.16 Hinges, locks, laches and bandels are of approved type and properly fixed.

25.17 Window panels are of the right thickness and properly fixed

25.18 All carpentry and joinery to comply with the standard technical specification.

26 CEILING

CHECK :-

26.1 Material and dimensions are according to the specifications and the drawing.

26.2 Before any mounting, painting of parts in connection with the ceiling such as steel

guides and walls is completed.

26.3 The ceilling is cleanded and well fixed when the work is completed.

26.4 The application and proper uses of putty.



27 PAINTING

CHECKS :-

27.1 The kind of paints is according to the specification and designers instruction.27.2 The painting is done according to the manufacturers instructions

27.3 The paint is not diluted unless specified by the manufacture.

27.4 All surface to be painted is clean from dust and dirt.

27.5 All surface to be painted is absolutly dry and free from defects before painting.

27.6 All brushes and tins used for painting are clean and free from old paint.

27.7 The room is closed until paint dries.

27.8 All electrical appliances, iron and brass works are removed before painting and

properly refixed after painting.

28 GLAZING

CHECK :-

28.1 Framers are fixed straight and in plumb

28.2 The type and thickness of glass is according to the specification and drawings.

28.3 The application and properness of putty

29 WATER WELL

CHECK:-

29.1 The water well is dug according to the specification and drawings, if possible dug

during the dry season.

29.2 If septic tanks, sock away pits and dry latrines are situated near by and inform the

designer to change the poition of the well.

29.3 The water is tested and approved after the digging is completed.

29.4 The masonry work is not started before the test result is known and approved.



30 WATER SUPPLY LINES

CHECK :-

30.1 The dimensions and types, tubes, values and water towers in accordance to thespecifications and drawings.

30.2 All values, unless otherwise specified is burned in the growing to a minimum depth

of 30cm.

30.3 All values are placed according to the drawing.

30.4 Inspect and approve the supply line before any backfilling starts.

31 PLUMBING AND SANITARY INSTALLATION

CHECK:-

31.1 The dimensions and types, tubes, values and water tower is according to the

specification and drawing.

31.2 All pipes and tubes to be installed in the floor are placed in position.

31.3 All joints before mass concrete is cast

31.4 Pipes and tubes are placed in the hard core with minimum 10 cm covering layer of

sand of in channels of floors as indicated on the drawings.

31.5 all sanitary work is properly fixed in its correct position.

31.6 All connection between sanitary work and over system is done with the prescribed

syphon.

31.7 all exposed pipes and tubes are well cleaned and pointed as specified

31.8 All sanitary work comply with the standard technical specification.

32 SEWER SYSTEM

CHECK :-



32.1 Dimensioning and types of pipes and inspection pips is according to the

specifications and the drawings.

32.2 The excavation measurements of the sewer lines is according to the drawing

32.3 The excavation is cone is straight lines between the manholes.

32.4 All Trenches before pipes are laid.

32.5 Unless otherwise specified, the pipes are laid on a sand bed with a minimum

thickness of 10 cm and in an absolutely straight line with an even slope of minimum

1:100 and covering soil layer is minimum 50cm.

32.6 The joining of concrete to pipes is always done with cement mortar, the joint

completely filled all around.

32.7 Joining of asbestos cement pipes is done according to the manufacture’s instruction

32.8 Inspection pipe is according to the drawing before backfilling.

32.9 all pipes connected to the inspection pit come approximately on the same level and

check channl formed in concrete at the bottom of the pit.

32.10 Backfill soil is of good quality free from stones and it is not top soil.

32.11 Back filling is in layers of minimum 20cm, if vibrating on roller machine is used

the thickness of the layer can be 40 cm unless otherwise specified.

32.12 Each layer of backfill is well rammed and consolidated with the addition of water

is necessary.

32.13 Measure the correct position of the water and sewer systems and prepare a sketch

on the site plan to sand to the designer for preparing drawing showing their correct

positions as built on site.

33. SEPINC TANK AND SOAK AWAY PIT

CHECK :-

33.1 Dimension and type of septic tank & soak away pit is according to the specifications

and drawings.

31.2 The position of septic tank and sock away pit of situated near by water well, and

inform the designer for the change of the positions.



31.3 Level of overflow pipes between different chambers and inlet and outlet pipes are

according to the drawing.

31.4 All plastering in and is with cement plaster with thickness and mixture according to

specifications and drawings.

31.5 All water proofing to specifications and drawings.

33 ELECTRICAL INSTALLATIONS

CHECK:-

34.1 The electrical installation is approved by EELPA or the designed professional.

34.2 Materials to be used for the installation strictly follow the specifications and the

drawings.

34.3 The electrical subcontractor has a valid certificate issued by EELPA before he starts

his work and his Forman is competent.

34.4 The conduits are free from defects and over the wires all the way.

34.5 All switches and outlets are properly fixed according to the drawing.

34.6 The connection of wires are always done in junction boxes.

34.7 All external cables are placed with a minimum 10cm depth in concrete or asbestos

cement pipes and 40cm depth in ground, unless otherwise specified.

34.8 The excavation is in straight line between the inspection pits.

34.9 The inspection pits are constructed every 30cm unless otherwise specified.

34.10 All trenches before pipes are laid.

34.11 The pipes are laid on minimum 10 cm thick sand bed unless otherwise specified.

34.12 The joining of asbestos cement pipes is done with cement mortar, the joint.

Completely filled around.



34.13 The joining of asbestos cement pipes is done according to the manufacture “s”

instruction.

34.14 The inspection pits, pipes and joints before backfilling.

34.15 The backfill soil is of good quality free from stones and it is not topsoil.

34.16 The backfilling is in layers of minimum 20cm if vibrating or roller machine is used

the thickness of the layer can be 40 cm unless otherwise specified.

34.17 Each layer of backfill is well rammed and consolidated with the addition of water if

necessary.

34.18 All underground cable joints are done special watertight junction box approved by

EELPA of designed professional.

34.19 All junction boxes used are placed in the inspection pipes.

34.20 Measure the correct length of all trenches and cables.

34.21 The correct position of external cables and pits and prepare a sketch on the site

plan to send designer for preparing drawings showing their correct positions as built on

site.

34.22 All electrical installation comply with the standard technical specification.

RETAINING WALLSCHECKS:-

35.1 The trench to be free from louse soil, roots and pieces of wood before construction.

35.2 The depth and width of trench to correspond with the drawings.

35.3 All stones are of good and approved quality.

35.4 All stones and the wall are kept free from soil and other kind of dirt during

execution.

35.5 No borrow pits are to be opened in the vicinity.

35.6 If expansion joints are executed as in the drawings.

36.7 The mix preparation of mortar.?

35.8 All retaining wall construction comply with the standard technical specification.



36 SITE WORKS

CHECK:-

36.1 The clearing of buildings is up to 2 meters from elevation walls on all sides, andcheck this limit is approved by the designer.

36.2 The clearing for root, foot paths and parking areas is up to I Meter from their

boundaries and check this limit is approved by the designer.

36.3 All roots are taken out with in the building area, under roads foot paths and parking

lots and transported away from the site.

36.4 The place for the dawn trees and check they are with in the building site.

36.5 All top soil is excavated separately.

36.6 And decide the place to pile up the excavated top soil and check it is 2 meters

outside the building perimeter.

36.7 And decide the place for the cart away which is not necessary for backfilling or

terracing.

36.8 All backfilling and terracing is done in layers not exceeding 20cm and if vibrating.

or roller machine is used the thickness must be 40cm.

36.9 Each layer of backfilling and tracing well rammed and consolidated.

36.10 All site work comply with the standard technical specification.

ROADS AND FOOTHPATHS

CHECK:-

37.1 Excavation for roads, footpaths is executed to bottom of hard core.

37.2 Backfilling for roads and footpaths is cone with non expansive selected material.

37.3 All Backfilling is done in layers not exceeding 20 cm and if vibrating of roler

maching is used the thickness must be 40cm.

37.4 Each layer of backfilling is well rammed and consolidated with addition of water if

necessary.



37.5 Before backfilling start the ground is free from top soil grass, bushes foots and

pieces of wood.

37.6 Stone for hard-core is not less than specified

37.7All stone is the hard-core are of approximately equal size.

37.8 The hard-core is well remained, consolidated and the top tightened with crushed

stones of gravel.

37.9 The thickness of hard-core is not less than specified.

37.10 The hard-core as well as the top surface is executed with a minimum slope of 1:100

to wares the sides.

37.11 The top surface is executed with material on the specification of drawings.

38 DRAIN CHANNELS AND CULVERTS

CHECK:-

38.1 Drain channels are according to the measurements on the drawings.

38.2 Drain channels to have minimum slope of 1:200, unless otherwise specified.

38.3 Stone channels to be on a bed hard-core or well compacted gravel with joints and

pointing in cement mortar (1:3)

38.4 Channels of half-concrete pipes are on a well compacted layer of fine aggregate with

a thickness not less than 10cm.

38.5 Half concrete pipes are laid in and joined with cement mortar (1:3)

38.6 Stone channels and culverts are constructed according to the drawings and

specification.

38.7 All pipes are laid on that each is in contact with the bed through out the length of its

barrel.

39 FENCING &GATE

CHECK: -

39.1 The tyoe fenc and gate are according to the specification and drawings.



39.2 The foundations of fence and gate according to the specifications and drawings.

40 PREPARATION OF PAYMENT CERTIFICATE

CHECK: -40.1 Payment certificate should be prepared on official formats

40.2 Payment certificate should be prepared in sufficient copies as needed

40.3 Payment certificate should be signed by: -

a) The supervisor

b) consultant if there is contract provisions for such supervisors.

c) The investor

40.4 The supervisor shall check payment against:-

a) Arithmatic error

b) Contract prices

c) Contract quantities

d) Contract time

e) Actual measurement sheets

f) Variation orders

g) Supplementary agreements

h) Validity of performance bond

i) Progress reports

41 INFORMATION ON CONSTRUCTION PROCEDURES

41.1 Check a site book is kept for any construction work and the following information is

including:-

Dates on which excavation, concreting, stripping of formwork, backfilling, site

work has taken place.



Acceptance of materials and components

Type of cement and aggregate

Inspection and measurements reports of the positioning of reinforcement

Important instruction received Description of any incidents.



6.NET TECHNICAL MANAGERIAL STAFFS AND

SUPERVISION TEAM COMPOSITION

Managerial staffing of our office has two divisions administration and finance staff and

technical managerial staff the later being the main division it is classified in to three

subdivisions. Since during the consultation process the technical managerial staff of net

consult will be a supporting technical staff for the design team to be assigned for the

particular task. For provision of better communication between the employer and the

consultant we have presented our staffing in three parts.

i. Technical managerial organization structure

This part presents managerial hierarchy of net consult

ii. Technical managerial staffing

This part presents technical managerial staffs of net consult

iii. Supervision team composition

This part presents the composition of the supervision team, which is to be assigned

to perform the particular task and the responsibilities of each professional.

NB. The supervision team composition is not limited to those specified but could be

upgraded or improved in consultation with the employer.



i) NET technical managerial staff

Name Position

1) Ato Dawit Assefa General manager

2) Ato Ambachew Fikadeneh Deputy General manager

3) Ato Wondirad worku High way & bridge design & supervision head

4) Ato Alula Habteab Buildings works & design & supervision head

5) Ato Zenebe Miruts Water works design & supervision head

Technical Managerial organization structure of Net consult



High way and bridge design

AndSupervision department

General manager

Deputy manager

Building works design

And

Supervision department

ii. Proposed supervision team composition for TREB

Water works design

AndSupervision dept



Name Position /Responsibility Experience

1) Ato Abdul wasie Resident engineer Nine years (9 years)

2) Ato Alula Habteab Associate Resident

engineer

Two years (3 years)

3) Ato Ermias Amare Periodic architectural

supervisor

Four years (4 years)

4) Ato Siyum Niguse Periodic Sanitary

supervisor

Four years (4 years)

6) Ato Michael Sibho Periodic Electrical

supervisor

Four years (3years)

ii. Proposed supervision team hierarchy for the supervision of TREB



7.ACTIVITY TIME SCHEDULE

Resident Engineer

Architectural

periodic supervisor

Structural periodicsupervisor

Sanitary periodic

supervisor

Electrical periodicsupervisor

Inspector



The activity schedule of our supervision team will depend on the

contractor’s actual working schedule, which will be checked and

approved by us in consultation with the employer.

8.MANNING TIME SCHEDULE

This Time schedule presents mobilization of the supervisors as a function of time



we have tried to give a brief description of availability of periodic supervisors as a

function of time and critical activity where as for the standby supervisors it is clear

that they will appear in the project always at the site.

The schedule is attached on the next page on tabular format with bar charts.



9. PREVIOUS COMPANY PERFORMANCE



Net consult consulting engineers and architects being a group of more than 20

engineers and architects specialized in civil works design and implementation. The

regional police office project near to hawzen hotel that is being supervised by us

could be a good reference to you in addition to those tabulated on the attached pages.

To give you some information’s on the sucessfully-completed supervisions and on

going supervisions we have summarized the projects as described on the following

pages on the following three main parts.

i. Water works supervision

ii. Roads and bridges supervision

iii. Buildings supervision



10.Special advantages gained by working with NET CONSULT



Net consult being the only consulting office established with its head office in

Mekelle, our client could get many special advantages from our office situated some

400-500 mts distance from our clients (TREB) office which it could not get from the

other consultants.

1) Net consult being a local consultant the supervision will comprise all local

information, local comments & local interests of the clients with out additional

cost.

2) Net consult being the only consultant with nearest office to TREB, TREB could

have day to day information regarding to the supervision process and discussion

on the design modifications with out the regular meeting days to be fixed

(arranged).

3) The communication between the client (TREB) & Net consult will be face to face

from engineers level to the top managerial staffs.

4) Since all our professionals are in the vicinity of Mekelle the client could access

them with out any problem and additional cost for comments & suggestions.

Reference

1) Relief society of Tigray

2) Mekelle Zone works & urban development department

3) Tigray Region Police head Quarter

cchecklist for supervision

Documents