Construction Of RCC Road & Laying Of Paver Block at Keshavanagar Area Road, Shanti Nagar Area Road & On Diff. TP Roads in Stadium Ward Of West Zone.

Name of Work : - Construction Of RCC Road & Laying Of Paver Block on Different road From MP,

MLA & Councilor Budget in Stadium Ward Of West Zone.

Sr QTY. DESCRIPTION PER RATE AMOUNT

1a 75.00 Demolition of Brickwork and stonemasonry 314.50 Cmt

including stacking of serviceable materilas and

disposal of unserviceable materials with all lead and

lift. (i) In Cement Mortar.

b 75.00 Demolition including stacking of serviceable 604.74 Cmt

material sand disposal of unserviceable materials

with all lead and lift. (i) R.C.C. work

2 Extra rate over item of excavation of earth for

excavation of asphalt pavement / RCC of thickness

up to 0.20 meter including demolishing the asphalt

carpet, metal,s oiling/cutting Reinforcement

etc.comp. with stacking the material as directed.

a 423.00 up to 0.20 meter thickness 71.10 Smt

b 3384.00 Up to 0.30 meter (By any type of Breaker Machine 177.76 Smt

or R.C.C.Cutter machine including cost of operator,

fuel, & transportation etc complete.

c 423.00 0.30 meter & above (By any type of Breaker 311.08 Smt

Machine or R.C.C.Cutter machine including cost of

operator, fuel, & transportation etc complete.

3 846.00 Excavation for foundation up to 1.5 mt. depth 127.13 Cmt

including sorting out stacking of useful material &

disposing of excavated stuff up to 50 mt. lead loose

or soft soil (As per Building SOR 2015-16)

4 846.00 Conveyance charge of earth, lime, murrum, building 52.42 Cmt

rubbish,manual garbage, sludge, excavated rock ,fly

ash, aggregate of any kind etc. comp.up to 5.0 Km.

lead (Based on Building SOR 2015-16, P-589 - Item

25.00 From 5.00 km to 10.00 km 78.54 Cmt

5 352.67 Removing any kind of pavement incl stacking of 12.32 Smt

serviceble material disposal of unserviceble material

with 50 meter lead and lift.

6 423.00 Providing and laying cement concrete 1:4:8 (1- 1979.12 Cmt

Cement : 4- coarse sand : 8- hand broken stone

aggregates 40 mm nominal size) and curing complete

excluding cost of formwork in (A) Foundation and

Plinth (upto 10 ton)

7 1410.00 Providing and Laying of Rubber Moulded Paver 501.60 smt

Block Grey/Coloured 60 mm thick, M-35 Grade of

any size ;shape (Usually Uni-Paver Blocks) using

black trap good quality aggragate of 20 mm nominal

size for footpath,parking areas, service lanes and

other areas as mentioned in the drawing / instruction

of engineer in charge. Cost includes formworks using

rubber mould, Rate providing and laying paver

blocks as per required grading and specification. The

paver block shall be mechanically compacted. The

work of paving blocks shall be executed in line and

level by skill mason of flooring work only. It should

be laid in such a way that the no cutting of the paver

block to be necessary. if cutting of paver block

necessary then it should be cut by machine only and

carting. The finished surface of the paver block shall

have resonably good, plain finished.Paver blocks

shall be compacted and shall be relaid if necessary.

Gravel or such type of materials shall not be allowed

for production. Laying on 5 cms thick sand bedding.

8 75.00 Supplying and fixing of 300 mm-L x 150 mm-B x 350.89 Rmt

380 mm-H Kerb block for Footpath in M-20 grade

using 20 mm nominal size black trap aggregate of

Sevaliya/Timba or equivalent quality for pre-cast

blocks, reasonably exposed finish/ formwork , mould

with well equipped with vibratory system for kerb

stones of approved design including curing, etc.

complete, including the cost of formwork etc.

complete. The rate shall also include necessary

cutting of asphalt, fixing the Kerb stones in line and

level on 5 cm thick sand bedding with necessary

equipments and materials. The rate shall also include

the flush pointing in CM (1:3) for all joints of the

kerbstones. Filling of zari alone the sides of the kerb

stone fixed with Bituminous concrete mixed in

proper position as directed by Engineer in change to

form a portable mixture. In any case Gravel or such

type of materials shall not be allowed for production.

9 423.00 Providing and laying in position Ready Mixed M- 3922.86 Cmt

200 grade concrete for reinforced cement conctere

work , using cement content as per approved Design

Mix manufactured in fully automatic batching plant

and transported to site of work in transit mixer for a

lead up to 10 kms having continuous agitated mixer,

manufactured as per mix design of specified grade

for reinforced cement concrete work including

pumping of R.M.C. from transit mixer to site of

laying, excluding the cost of centering shuttering

finishing and reinforcement including cost of

admixtures in recommended proportions as per IS:

9103 to accelerate/ retard setting of concrete,

improve workability without impairing strength and

durability as per direction of the Engineer - in -

charge. Without Fly Ash (Min cement level as per

latest IS 456 shall be maintained)

10 350.00 Provdg. Form work of ordinary timber planking so as 102.19 Smt

to give a rough finish incl. centering, shuttering,

strutting and propping etc. height of propping and

centering below supporting floor to ceiling not

exceeding 4 M & removal of the same for in situ

reinforced concrete and plain concrete work in (A)

Foundation, footing, base of column & mass concrete

11 7614.00 Providign thermo Mechanically treated bars (TMT 55.90 Kg

BARS) confirming to IS 1786/FC 415 for R.C.C

works includings bendings, binding and placing in

position complete upto floor two level.

12 2820.00 P/A Trimix with dewatering machine and floater 54.00 Smt

machine on constructed RCC work incl.cost of

machine and labour etc comp as directed

13 1000.00 Making 15 mm groove in RCC work on road and 30.00 Rmt

filling it with polysulfied selant and finished it good

incl.all labour charges etc comp as directed.

14 Repairing damaged M.H. incl. removing damaged

brick and repairing by masonry in C.M. 1:5 and

plaster in C.M. 1:3 and fixing C.I. steps and M.H.

and carting the same as directed. (Drainage SOR

40.00 (A) up to 0.15 mt. (@ Two Coarse) 721.60 No.

2.00 (B) up to 0.35mt. (@ Four Coarse) 1144.00 No.

0.00 (C) up to 0.65 mt. (@ Seven Coarse) 1768.80 No

15 RCC Precast M.H.Frame & Cover Manufacture

supply & Delivery at store or at side of work Precast

RCC M200 Frame & Cover Suitable to drainage

M.H. and as per type design & Drawing including

cost of reinforcement M.S. Angles or Flat , cutting

mold work etc.(GWSSB SOR 2021-22)

a 25.00 Frame Suitable for 50 Cm opening of MH 1255.00 No.

b 25.00 Cover Suitable for 50Cm Opening Of MH 1314.00 No

a 10.00 Frame Suitable for 50 Cm opening of MH 1120.00 No.

b 10.00 Cover Suitable for 50Cm Opening Of MH 1194.00 No

House connection Chamber Light Duty

a 0.00 Frame 911.00 No.

b 0.00 Cover 1030.00 No

Contractor'sSign Addl.C.E.

MobilNo:- (westzone)

AHMEDABADMUNICIPALCORPORATIONENGINEERDEPARTMENT

TECHNICALSPECIFICATION

Nameof Work :- Construction Of RCC Road & Laying Of Paver Block at Keshavanagar

Area Road, Shanti Nagar Area Road & On Diff. TP Roads in Stadium Ward Of West Zone.

GeneralTechnicalSpecificationSection

FollowingtechnicalspecificationsshallbeapplicabletotherelevantitemsofBOQ

Demolition of brickwork & stonemasonry including stacking of serviceable

material sand disposal of unserviceable materials with all lead and lift. (III) In

Demolition including stacking of serviceable material sand disposal of

unserviceable materials with all lead and lift. (I) R.C.C work.

This item includes removing any kind of paving of existing footpath & pavement All demolishing material shall be stacked

on site as per instruction of Engineer in charge of work.

If necessary demolishing may be done in stages as per site condition.The ground shall be properly leveled and dressed

after demolishing as directed.

The mode of measurnment shall be on smt basis.

Item No: 2 Extra rate over item of excavation of earth for excavation of asphalt pavement / RCC of thickness up

to 0.20 meter including demolishing the asphalt carpet, metal,s oiling/cutting Reinforcement

etc.comp. with stacking the material as directed.

up to 0.20 meter thickness (By Manual)

Up to 0.30 meter (By any type of Breaker Machine or R.C.C.Cutter machine including cost of operator,

fuel, & transportation etc complete.

0.30 meter & above (By any type of Breaker Machine or R.C.C.Cutter machine including cost of

operator, fuel, & transportation etc complete.

Extra rate for excavation of asphalt payment of any thickness including demolishing the asphalt carpet,

metal, soiling etc. complete with stacking the materials as directed. The road surface of asphalt shall

carefully be opened to full width as directed by the Engineer in charge so as to remove all cracks or other

damaged portions of road either manually or with the soiling shall be first be stripped off for the whole width

of trenches. All the materials shall be separately deposited in such places as may be determined by the

Engineer-in-charge. In case rubble not being so deposited or being mixed up with the excavated materials

will not be allowed for refilling. The cost of materials shall be charged from the contractor. The decision of

the C.E. shall be final and binding to the contractor.

Mode of measurement

Measurement shall be paid by Smt basis.

Item No. 3 :: Excavation for foundation up to 1.5 tm. depth in all type of hard and soft soil including sorting

out tacking of useful material & disposing of excavated stuff up to 50 tm. lead loose or soft soil,

girding, lighting, fencing the trenches', and pits. (depth measured from GL).

Road way excavation shall consists of excavation in all sorts of soil incl. removal and satisfactory disposal of all excavated materials

and necessary for the construction of roadway, side ditches and water ways, in accordance with the requirements of those

specifications and in the lines, and cross sections shown on the drawings of indicated by the Engineer. This work shall include the

hauling and stacking of or hauling to sites of also the disposal of unsuitable cut materials in specified manner the training and

finishing of the road way.

Construction operations :

After the site has been cleared, the limits of excavation shall be set out true to lines, curves slopes grades and sections as shown on

the drawings or as directed by the Engineer. The contractor shall provide all labour survey instruments and materials, such as strings,

pegs, nails, bamboos, stones, lime mortar, concrete etc. required in connection with the setting out of works and establishment of

bench marks. The contractor shall be responsible for the maintenance of bench marks and other marks and stacks as long as they

required for the work in the opinion of the Engineer.

Excavation – General :

All excavation shall be carried out in conformity with the directions laid here in under and in a manner approved by the available

from excavation are satisfactorily utilized as decided upon before hand.

The earthen shoulders of the road shall be excavated to match the profile or the chamber of the asphalt road.

The excavation shall conform to the lines, grades side sloes and levels shown on the drawings or as directed by the Engineer. The

contractor shall not excavate outside the slopes or below the established grades or loosen material outside the limits of excavation.

Subject to the permitted tollerance any excess depth excavated below the specified levels on the roadway shall be made good at the

cost of the contractor with suitable material of similar characteristics to that removed and compacted to the requirements.

All debris and loose material on the slopes of cuttings shall be removed. No back filling shall be allowed to obtain required slopes

excepting that when boulders or as directed by the Engineer. While doing so, care shall be taken to see the no portion of the existing

payment, pavement designated to the retained, is loosened or dis-loosened or disturbed.

Dispose of Excavated Material :-

If there be any stone in the excavated materials, suitable for rubble packing, road metal or for building or any other Municipal

purposes, it shall be separated and stated above, and without extra charges.

Preservation of Property :

The contractor shall take all reasonable precautions for the protection and preservations of any or all existing road side trees, drains,

sewers or other subsurface drains, pipes, conduits and any other structure under or above ground. the excavation for the road work

will be paid on the basis of sectional measurements irrespective of the work.

Measurement shall be paid by Cmt basis.

Item No: 4 Conveyance charge of earth, lime, murrum, building rubbish, manual garbage, sludge, excavated

rock , fly ash, aggregate of any kind etc complete up to 5.0 KM lead.

All the surplus earth etc. shall be carried away immediately from the site of work to a place within 5km. distance or as directed and

ordered by the Engineer, so as not to cause any inconvenience to the public traffic finding which in view of public safety and traffic

convenience. The corporation shall carry out the work by any other agency at the contractor’s risk and cost. If the instructions are not

completed within 7 days from the date of order to cart the surplus materials and clear the site, the said work shall be carried out by

the Municipal Corporation at the risk and cost of the contractor and no claim or dispute shall be entertained in this respect.

If the filling in trenches after settlement of the earth filling in trenches is to be done and the same shall be carried out by the

contractor without asking any extra rate. The contractor shall have to cart the surplus earth after the trenches we will watered and

refilled with the sand. The rate of carting including carting of brickbats, metal, rubble vegetable and garbage, if necessary to clear the

The rate shall be for a unit of one cubic meter.

Item No : 5 Removing any kind of pavement incl stacking of serviceble material disposal of

unserviceble material with 50 meter lead and lift.

Item No : 6 Providing & laying cement concrete 1:4:8 (1 cement : 4 coarse sand : 8 hand broken stone

aggregates 40 mm nominal size) and curing complete excluding cost of form work in

Foundation and plinth

1.0. Materials :

1.1. Water shall conform to M-1. Sand shall conform M-6. Cement shall conform to M-3. Stone aggregate 40 mm.

nominal size shall conform to M-12.

2.0. Workmanship :

2.1.1. Before starting concrete bed of foundation treaches shall be cleared of all loose materials, leveled, watered, and

rammed as directed.

1.1. Proportion of Mix :

1.1.1. The proportion of cement, sand and coarse aggregate shall be one part of cement, 3 parts of sand, 6 parts of stone

aggregates and shall so measured by volume.

1.2.1. The concrete shall be mixed in a mechanical mixer at the site of work. Hand mixing may however be allowed for

smaller quantity of work if approved by the Engineer-in-charge. When hand mixing is permitted by the Engineer-

in-charge incase of break-down of machinery’s and in the interest of the work. it shall be carried out on a water

tight platform and care shall be taken to ensure that mixing is continued until the mass is uniform in colour and

consistency. However in such cases 10% more cement than otherwise required shall have to be used without any

extra cost. The mixing in mechanical mixer shall be done for a period 1 to 2 minutes. The quantity of water shall

be sufficient to produce a dense concrete of required workability for the purpose.

1.3. Transporting & Placing the concrete :

1.3.1. The concrete shall be handled from the place of mixing to the final position in not more than 15 minutes by the

method as directed and shall be placed into its final position, compacted and finished within 30 minutes of mixing

with water i.e. before the setting commences.

1.3.2. The concrete shall be laid in layers of 15 cms. to 20 cms.

1.4. Compacting :

1.4.1. The concrete shall be rammed with heavy iron rammers and rapidly to get the required compaction and to allow all

the interstriees to be filled with mortar.

1.5.1. After the final set, the concrete shall be kept continuously wet, if required by pounding for a period of not less than

7 days from the date of placement.

2.7. Mode of measurement and payment :

2.7.1 The concrete shall be measured for its length breadth and depth, limiting dimensions to those specified on plan or

2.7.2 The rate shall be for a unit of one cubic meter.

Item No: 6, Providing and laying in position Ready Mixed M-200 grade concrete for reinforced cement conctere work

using cement content as per approved Design Mix manufactured in fully automatic batching plant and

transported to site of work in transit mixer for a lead up to 10 kms having continuous agitated mixer,

manufactured as per mix design of specified grade for reinforced cement concrete work including pumping of

R.M.C. from transit mixer to site of laying, excluding the cost of centering shuttering finishing and

reinforcement including cost of admixtures in recommended proportions as per IS: 9103 to accelerate/ retard

setting of concrete, improve workability without impairing strength and durability as per direction of the

Engineer - in - charge. Without Fly Ash (Min cement level as per latest IS 456 shall be maintained) Materials :

a. Water shall conform to M-1. Cement shall conform to M-3. Sand shall conform to M-6. Grit shall conform to M-8.

Coarse aggregate shall conform M-12 B.

a. The relevant specifications of item no. 5.4.1 of ordinary concrete shall be followed except that the concrete mix shall

be designed from preliminary tests, the proportioning of cement and aggregates shall be done by weight and

necessary precautions shall be taken in the production to ensure that the required work cube strength is attained

and maintained. The controlled concrete shall be in grades of M-100, M-150, M-200, M-250, M-300, M-350, M-400,

with prefix controlled added to it. The letter ‘M’ refers to mix and numbers specify 28 days works cube compressive

strength of 150 mm cubes of the mix expressed in Kg. / Cmt.

b. The porportion of cement, sand and coarse aggregates shall be determined by weight. the weight batch machine

shall be used for maintaining proper control over the porportion of aggregates as per mix design.

The strength requirements of different grades of concrete shall be as under:

Grade of Concrete Compressive strength of 15 cms cubes in Kg./Cmt. at

28 days conducted in with I.S. 516-1959

accordance Preliminary test

In all cases, the 28 days compressive strength specified in above table above be the criteria for acceptance or

rejection of the concrete.

Where the strength of a concrete mix as indicated by tests, lies in between the strength of any two grades

specified in the above table such concrete shall be classified in for all purposes as concrete belonging to the

lower of the two grades between which its strength lies.

c. The proportions for ingredients chosen shall be such that concrete has adequate workability for conditions

prevailing on the work in question and can be properly compacted with means available except where it can

be shown to the satisfaction of the Engineer-in-charge, that the supply of properly graded aggregate of

uniform quality can be maintained till the completion of work. Grading of aggregate shall be controlled by

obtaining the coarse aggregates, in different sizes and being in them in the right proportions as required.

Aggregate of different sizes shall be stocked in separate stock piles. The required quantity of material shall be

stock piled several hours, preferably a day before use. The grading of coarse and fine aggregate shall be

checked as frequently as possible, the frequency for a given job being determined by the Engineer-in-charge

to ensure that the suppliers are maintaining the uniform grading as approved for samples used in the

preliminary tests.

d. In proportioning concrete, the quantity of both cement and aggregate shall be determined by weight. Where

the weight of cement is determined by accepting the maker’s weight per bag a reasonable number of bags

shall be weighted separately to check the net weight. Water shall either be measured by volume in calibrated

tanks or weighed. All measuring equipments shall be maintained in clean and serviceable condition. Their

accuracy shall be periodically checked.

e. In is most important to keep the specified water cement ratio constant and at its correct value. To this end,

moisture content in both fine and coarse aggregates shall be determined by the Engineer-in-charge,

according to the weather conditions. The amount of mixing water shall then be adjusted to compensate for

variations in the moisture content. For the determination of moisture content in the aggregates, I.S.

2389(Part III) shall be referred to. Suitable adjustments shall also be made in the weights of aggregates due

to variation in their moisture content. Minimum quantity of cement to be used in concrete shall not be less

than 220 Kgs./M 3 in plain concrete and not less than 250 Kg/M3 in reinforced concrete.

(C) Mode of measurement and payment:

a. The relevant specifications item No. 5.4.1 shall be followed except that the controller concrete R.C.C. work

for work as specified in item shall be measured under this item. The rate excludes cost of form work.

b. The rate shall be for a unit of one cubic meter.

Item No: 7 Providing and Laying of Rubber Moulded Paver Block Grey/Coloured 60 mm thick, M-35

Grade of any size ;shape (Usually Uni-Paver Blocks) using black trap good quality

aggragate of 20 mm nominal size for footpath,parking areas, service lanes and other

areas as mentioned in the drawing / instruction of engineer in charge. Cost includes

formworks using rubber mould, Rate providing and laying paver blocks as per required

grading and specification. The paver block shall be mechanically compacted. The work

of paving blocks shall be executed in line and level by skill mason of flooring work only.

It should be laid in such a way that the no cutting of the paver block to be necessary. if

cutting of paver block necessary then it should be cut by machine only and carting. The

finished surface of the paver block shall have resonably good, plain finished.Paver

blocks shall be compacted and shall be relaid if necessary. Gravel or such type of

materials shall not be allowed for production. Laying on 5 cms thick sand bedding.

Providing and laying of interlocking grey paver blocks unishape of high density 80 mm thick made from M-45

grade concrete using 6mm to 20 mm machine crushed well graded stone aggregate, sand of approved quality,

OPC53 grade cement with contractor's own concrete mix design as approved by AMC Cost Includes formwork,

using rubber/FRP mould, laying paver block as per required grading and specification laid paver block shall be

mechanically compacted. The work of the paving blocks shall be level by skilled mason of flooring work only. It

should be laid in such a way that the no cutting of the paver block to be necessary. Cutting of paver block by

machine cut only and carting to be done. The Finished surface of the Paver Block shall have reasonably good

plain finish. Paver blocks shall be compacted and shall be re-laid if necessary. Gravel or such type of materials

shall not be allowed for production. Laying on 40mm thick sand bedding.(a) Extra rate over and above for

Rubber Moulded Paver Block

TECHNICAL SPECIFICATIONS :

I) Paver Block Manufacturing Facilities :

The Paver Block shall be made in factory with following minimum facilities :

1.1 Concrete Block making Machines :

The machine should be capable of producing high quality Paver Blocks by obtaining high level of compaction by

application of hydraulic compaction and also by high intensity vibration to the moulds. The machine should have

automatic control panel for uniformity in strength.

1.2 Concrete Batching & Mixing Plant : (Not essential)

The concrete Mix Design should be followed for each batch of materials. The concrete ingredient should be

mixed in concrete Batching & Mixing plant with minimum capacity of 30 cum/hour. The plant should equipped with

automatic control panel for maintaining water cement ratio from batch to batch to obtain concrete of uniform quality

and strength. The plant should be equipped with adequate mechanism for mechanized loading of raw materials into

mixer and conveyor belt for transportation of concrete from mixer to concrete block making machine to maintain quality

1.3. Curing:- The factory should have well designed curing area to ensure adequate curing of paver blocks.

Laboratory (Desirable but not essential) :

The factory should have the following:

Compression testing machine of adequate capacity.

Other tools and equipment for testing raw materials and paver blocks.

(1).Systematic record of test results of various paver blocks manufactured in the factory.

(2).Concrete Mix Design for various grade of concrete used for making of paver blocks.

II) SPECIFICATIONS FOR COLOURED PAVER BLOCKS :

Coloured concrete paver blocks shall be manufactured as per attached specifications using approved colour Pigment of

“BAYER” Make “BAYFERROX IRONOXIDE PIGMENTS” with minimum colour pigment of 3% by weight of cement. The

colour shade shall be “RED” as selected by HPCL before commencement of the work. White cement shall be used for

colored pavers to obtain the desired colour shade. The job also includes providing 50 mm thick sand bedding to match

the shade of the paver block.

The colour of the paver block shall be guaranteed against fading of colour for period of 12 months from the date of laying

of the same at site.

All other technical specifications & Procedure for testing, laying & sampling of coloured pavers will be as per attachment.

III) PAVERS BLOCK CHARACTERISTICS :

The concrete pavers should have perpendicularities after release from the mould and the same should be retained until

The surface should be reasonably smoothe and of anti skid and anti glare type.

The paver should have uniform chamfers to facilitate easy drainage surface run off.

The pavers should have uniform interlocking space of 2mm to 3mm to ensure compacted sand filling after vibration on

the paver Surface.

The concrete mix design should be followed for each batch of materials separately and automatic batching plant is to be

used to achieve uniformity in strength and quality.

The pavers shall be manufactured in single layer only.

Skilled labour should be employed for laying blocks to ensure line and level of laying, desired shape of the surface and

adequate compaction of the sand in the joints.

The pavers shall be of cement gray colour without any pigment & for coloured pavers refer “specifications for coloured

The pavers are to be skirted all round with kerbing using solid concrete blocks of size 150mm X 250mm X 380mm. The

kerbing should be embedded for 100mm depth. The concrete used for kerbing shall be cured properly for 7 days

IV) Paver Block Dimensions :

Thickness 60mm or 80mm

Shape Uniregular (Uniform Shape with no Hollow Or

Chamfer 4mm to 6mm along top edges

Colour Natural cement grey colour without use of any

For coloured pavers refer “specifications for

coloured pavers”

Dimensional Tolerance (+/-) 2mm for length & width,

(+/-) 3mm for Height (Thickness)

V) Testing of Paver Blocks :

SR. Average Values

NO. (Average of Minimum

Five Samples/Site)

1. Compressive Strength Min. 45 N/Sqmm for 80mm thick

OR Min. 30 N/Sqmm for 60mm

2. Flexural Strength Minimum 4.5 N/Sqmm

3. Abrasion Resistance Maximum

4. Water Absorption Maximum 5.80%

5. Minimum Cement Contact 380 Kg/Cum (Not Essential)

* Sampling and Testing procedure as per enclosed specifications

SAMPLING AND TESTING PROCEDURES FOR PAVER BLOCKS.

INTERNAL – Average of minimum 3 samples per 5000 Blocks.

Essential – Minimum 2 Blocks per 10000 bocks. Average of minimum 8 blocks per site.

1. Sampling For Testing

Sampling for testing of paver blocks shall be done in accordance with Appendix-A.

Compressive Strength

Testing for compressive strength shall be undertaken in accordance with Appendix-B.

The average compressive strength of the bocks tested shall be 40 N/Sqmm.

Abrasion Resistance

Testing for abrasion shall be in accordance with IS 1237 (Specifications for Cement Concrete Floor Tiles) – Appendix C.

Flexural Strength

Testing for flexural shall be n accordance with IS 1237 (Specifications for Cement Concrete Floor Tiles) – Appendix D.

Water Absorption

Testing for water absorption shall be in accordance with IS 2185:1979 : Part I (Specifications for Concrete Masonry Units)

Sampling of Paver blocks.

1. Method of sampling :

Before laying paver blocks, each designated section comprising not more than 50000 blocks, shall be divided into ten

approximately equal groups. Three blocks shall be drawn from each group.

Marking and identification :

All samples shall be clearly marked at the time of sampling in such a way that the designated section of part thereof, and

the consignment represented by the sample, are clearly defined.

The sample shall be dispatched to the approved test laboratory taking precaution to avoid damage to the

paving in transit. Protect the paving from damage and contamination until they have been tested. The testing shall be

carried as soon as possible, after the sample has been taken. As soon as practicable after sampling. The samples shall be

stored in water at 20 degree C  5 degree C for 24 hours prior to testing.

The rate shall be for a unit of one Square meter.

Item No: 8 Kerb Stone Fixing for Central Verge (for Both sides) 300 mm-L x 150 mm-B x 380 mm-H

Supplying and Fixing M-20 grade using black trap aggregate of Sevaliya/Timba or equivalent

quality 20mm nominal size for Pre-cast reasonably exposed finish/formwork, mould with well

equiped with vibratory systemfor Kerb Stones of approved design including curing, etc.

complete, including the cost of formwork etc. complete. The rate shall also include for cutting

asphalt erecting and fixing the pieces in position with necessary equipments and materials. The

rate shall also include the flush pointing in CM (1:3) for all joints of the kerb stones. Filling of

zari alone the sides of the kerb stone fixed prepared with Bituminious concrete mixed in

proper position as dire by Engineer in charge to form a portable mixture. The rate is for fixing

kerb stone on Both Sides. In any case Gravel or such type of materials shall not be allowed for

Kerb Stone & top slab Fixing For Central Verge Cost of central block 300 mm-L x 150 mm-B x 380 mm-H Supplying and

fixing M-20 grade using black trap aggregate of Sevaliya/Timba or equivalent quality 20 mm. nominal size for pre-cast

reasonably exposed finish/ formwork , mould with well equiped with vibratory system for kerb stones & top slab of

approved design including curing, etc. complete, including the cost of formwork etc. complete. The rate shall also include

for cutting asphalt erecting and fixing the kerbs in position with necessary equipments and materials. The rate shall also

include filling the sand between the gap and flush pointing in CM (1:3) for all joints of the kerb stones & top slab. Filling of

zari alone the sides of the kerb stone fixed prepared with Bituminous concrete mixed in proper position as dire by

Engineer in change to form a portable mixture The rate is for fixing kerbstone on both sides. Gravel or such type of

materials shall not be allowed for production.

c) Central verge with filling of selected earth

The related technical specification is as narrated above.

Payment shall be done in rmt. basis

Item No:- 09 Providing and laying in position Ready Mixed M-200 grade concrete for reinforced cement conctere work

, using cement content as per approved Design Mix manufactured in fully automatic batching plant

and transported to site of work in transit mixer for a lead up to 10 kms having continuous agitated

mixer, manufactured as per mix design of specified grade for reinforced cement concrete work

including pumping of R.M.C. from transit mixer to site of laying, excluding the cost of centering

shuttering finishing and reinforcement including cost of admixtures in recommended proportions as

per IS: 9103 to accelerate/ retard setting of concrete, improve workability without impairing strength

and durability as per direction of the Engineer - in - charge. Without Fly Ash (Min cement level as per

latest IS 456 shall be maintained)

D-9 : REINFORCED CEMENT CONCRETE WORK & PLAIN CEMENT CONCRETE WORK

D.9.1.1 This Specification covers the general requirements for concrete using on-site production facilities

including requirements in regard to the quality, handling, storage of ingredients, proportioning, batching,

mixing, transporting, placing, curing, protecting, repairing, finishing and testing of concrete; form work;

requirements in regard to the quality, storage, bending and fixing of reinforcement; grouting as well as

mode of measurement and payment for complete works.

D.9.1.2 It shall be very clearly understood that the specifications given herein are brief and do not cover minute

details. However, all work shall have to be carried out in accordance with the relevant standards and

codes of practices or in their absence in accordance with the best accepted current engineering practices

or as directed by Engineer from time to time. The decision of Engineer as regards the specification to be

adopted and their interpretation and the mode of execution of work shall be final and binding on

Contractor and no claim whatsoever will be entertained on this account.

D.9.2 APPLICABLE CODES AND SPECIFICATIONS

D.9.2.1 The following specifications, standards and codes, including all official amendments / revisions and other

specifications and codes referred to therein, should be considered a part of this specification. In all cases

the latest issue / edition / revision shall apply. In case of discrepancy between this specification and

those referred to herein below or other specifications forming a part of this bid document, this

specification shall govern.

D.9.2.2 Code for Materials

1. IS : 269 - Specification for 33 grade ordinary portland cement

2. IS : 455 - Specification for portland slag cement

3. IS : 1489 - Specification for portland pozzolana cement

4. IS : 8112 - Specification for 43 grade ordinary portland cement.

5. IS : 12330 - Specification for sulphate resisting portland cement

6. IS : 383 - Specification for coarse and fine aggregates from

natural sources for concrete.

7. IS : 432 - Specification for mild steel and medium tensile steel

(Part 1 and 2) bars and hard drawn steel wires for concrete

8. IS : 1786 - Specification for high strength deformed steel bars and

wires for concrete reinforcement.

9. IS : 1566 - Specification for hard drawn steel wire fabric for

concrete reinforcement.

10. IS : 9103 - Specification for admixtures for concrete.

11. IS : 2645 - Specification for integral cement water proofing

12. IS : 4990 - Specification for plywood for concrete shuttering work.

13. IS : 12269 - Specification for 53 grade ordinary portland cement.

D.9.2.3 Code for Material Testing

1. IS : 4031 - Methods of physical tests for hydraulic cement.

(Parts 1 to 15)

2. IS : 4032 - Methods of chemical analysis of hydraulic cement.

3. IS : 650 - Specifications for standard sand for testing of cement.

4. IS : 2430 - Methods for sampling of aggregates for concrete.

5. IS : 2386 - Methods of test for aggregates for concrete.

6. IS : 3025 - Methods of sampling and test (physical and chemical)

water used in industry.

7. IS : 6925 - Methods of test for determination of water soluble

chlorides in concrete admixtures.

D.9.2.4 Code for Materials Storage

1. IS : 4082 Recommendations on stacking and storing of

construction materials at site.

D.9.2.5 Code for Concrete Mix Design

1. IS : 10262 - Recommended guidelines for concrete mix design.

2. SP : 23 - Handbook on Concrete Mixes.

D.9.2.6 Code for Concrete Testing

1. IS : 1199 - Method of sampling and analysis of concrete.

2. IS : 516 - Method of test for strength of concrete

3. IS : 9013 - Method of making, curing and determining compressive

strength of accelerated cured concrete test specimens.

4. IS : 8142 - Method of test for determining setting time of concrete

by penetration resistance.

5. IS : 9284 - Method of test for abrasion resistance of concrete.

6. IS : 2770 - Methods of testing bond in reinforced concrete.

D.9.2.7 Code for Equipment

1. IS : 1791 - Specification for batch type concrete mixers.

2. IS : 2438 - Specification for roller pan mixer.

3. IS : 4925 - Specification for concrete batching and mixing plant.

4. IS : 5892 - Specification for concrete transit mixer and agitator.

5. IS : 7242 - Specification for concrete spreaders.

6. IS : 2505 - General Requirements for concrete

vibrators : Immersion type.

7. IS : 2506 - General Requirements for screed board concrete vibrators.

8. IS : 2514 - Specification for concrete vibrating tables.

9. IS : 3366 - Specification for pan vibrators.

10. IS : 4656 - Specification for form vibrators for concrete.

11. IS : 11993 - Code of practice for use of screed board concrete vibrators.

12. IS : 7251 - Specification for concrete finishers.

13. IS : 2722 - Specification for portable swing weigh batchers for

concrete (single and double bucket type).

14. IS : 2750 - Specification for steel scaffoldings.

D.9.2.8 Codes of Practice

1. IS : 456 - Code of practice for plain and reinforced concrete.

2. IS : 457 - Code of practice for general construction of plain and

reinforced concrete for dams and other massive structures.

3. IS : 3370 - Code of practice for concrete structures for storage of

(Parts 1 to) liquids.

4. IS : 3935 - Code of practice for composite construction.

5. IS : 2204 - Code of practice for construction of reinforced concrete

6. IS : 2210 - Criteria for the design of reinforced concrete shell

structures and folded plates.

7. IS : 2502 - Code of practice for bending and fixing of bars for concrete

8. IS : 5525 - Recommendation for detailing of reinforcement in

reinforced concrete works.

9. IS : 2751 - Code of practice for welding of mild steel plain and

deformed bars used for reinforced concrete construction.

10. IS : 9417 - Specification for welding cold worked bars for reinforced

concrete construction.

11. IS : 3558 - Code of practice for use of immersion vibrators for

consolidating concrete.

12. IS : 3414 - Code of practice for design and installation of joints in

13. IS : 4326 - Code of practice for earthquake resistant design and

construction of building.

14. IS : 4014 - Code of practice for steel tubular scaffolding.

15. IS : 2571 - Code of practice for laying in-situ cement concrete flooring.

16. IS : 7861 - Code of practice for extreme weather concreting.

(Part – 1) - Recommended practice for hot weather concreting.

(Part – 2) - Recommended practice for cold weather concreting.

D.9.2.9 Code for Construction safety

1. IS : 3696 - Safety code for scaffolds and ladders.

(Parts I and III)

2. IS : 7969 - Safety code for handling and storage of building

3. IS : 8989 - Safety code for erection of concrete framed structures.

D.9.2.10 Code for Measurement

1. IS : 1200 - Method of measurement of building and engineering

(Part 1 to 28) works.

2. IS : 3385 - Code of practice for measurement of Civil Engineering

D.9.3.1 Engineer shall have the right at all times to inspect all operations including the sources of materials,

procurement, layout and storage of materials, the concrete batching and mixing equipment, and the

quality control system. Such an inspection shall be arranged and Engineer’s approval obtained, prior to

starting of concrete work. This shall, however, not relieve Contractor of any of his responsibilities. All

materials which doe not conform to this specification shall be rejected.

D.9.3.2 Materials should be selected so that they can satisfy the design requirements of strength, serviceability,

safety, durability and finish with due regards to the functional requirements and the environmental

conditions to which the structure will be subjected. Materials complying with codes / standards shall

generally be used, other materials may be used after approval of the Engineer and after establishing their

performance suitability based on previous data, experience or tests.

D.9.4 MATERIALS

D.9.4.1.1 Unless otherwise specified or called for by the Engineer, cement shall be Ordinary Portland cement

conforming to IS specified above.

D.9.4.1.2 Where Portland pozzolana or slag cement are used, it shall be ensured that consistency of quality is

maintained, there will be no adverse interactions between the materials and the finish specified is not

D.9.4.1.3 Only one type of cement shall be used in any one mix. The source of supply, type or brand of cement

within the same structure or portion thereof shall not be changed without approval from Engineer.

D.9.4.1.4 Cement which is not used within 90 days from its date of manufacture shall be tested at a laboratory

approved by Engineer and until the results of such tests are found satisfactory, it shall not be used in any

D.9.4.2 Aggregates (General)

D.9.4.2.1 General

D.9.4.2.1.1 “Aggregate” in general designates both find and coarse inert materials used in the manufacture of

concrete (vide BIS 456 & BIS 383) and conforming to tests as per BIS 2386 (Part I to VI).

D.9.4.2.1.2 “Coarse Aggregate” is aggregate most of which is retained when passed through on 4.75 mm BIS sieve.

D.9.4.2.1.3 All fine and coarse aggregates proposed for use in the works shall be subject to the Engineer-in-Charge’s

approval and after specific materials have been accepted, the source of supply of such materials shall not

be changed without prior approval of the Engineer-in-charge.

D.9.4.2.1.4 Aggregates shall consist of natural sand, stone (crushed or uncrushed) and gravel from a source known to

produce satisfactory aggregate for concrete and shall be chemically inert, non-flaky, strong, hard, durable

against weathering, or limited porosity and free from deleterious materials that may cause corrosion of

the reinforcement or may impair the strength and or durability of concrete. The grading of aggregates

shall be such as to produce a dense concrete of specified strength and consistency that will work readily

into position without segregation and shall be based on the “mix design” and preliminary tests on

concrete specified later. The aggregates shall be brought from the source as mentioned in Volume–I

D.9.4.2.2 Sampling and testing

D.9.4.2.2.1 Samples of the aggregates for mixed design and determination of suitability shall be taken under the

supervision of the Engineer-in-charge and delivered to the laboratory, well in advance of the scheduled

placing of concrete. Records of tests, which have been made on proposed aggregates and on concrete

made from this source of aggregates shall be furnished to Engineer-in-charge in advance of the work, for

use in determining aggregate suitability. The costs of all such tests, sampling etc. shall be borne by the

D.9.4.2.3 Storage of aggregates

D.9.4.2.3.1 All coarse and fine aggregates shall be stacked separately in stock piles in the material yard near the work

site in bins properly constructed to avoid inter mixing of different aggregates. Contamination with

foreign material and earth during storage and while heaping the materials shall be avoided. The

aggregates must be of specified quality not only at the time of receiving at site but more so at the time of

loading into mixer. Rakers shall be piled in layers not exceeding 1.20 m in height to prevent coning or

segregation. Each layer shall cover the entire area of stock pile before succeeding layers are started.

Aggregates that have become segregated shall be rejected.

D.9.4.2.4 Specific Gravity

D.9.4.2.4.1 Aggregates having a specific gravity below 2.4 (saturated surface dry basis) shall not be used.

D.9.4.3 Fine Aggregate

D.9.4.3.1 Fine aggregate shall consist of natural or crushed sand conforming to IS 383 conforming to tests as per IS

2386 part I to IV. The sand shall be clean, sharp, hard, strong and durable and shall be free from dust,

vegetable substances, adherent coating, clay, alkali, organic matter, mica, salt or other deleterious

substances, which can be injurious to the setting qualities / strength/ durability of concrete.

D.9.4.3.2 Screening and Washing : Sand shall be prepared for use by such screening or washing, or both, as

necessary, to remove all objectionable foreign matter while separating the sand grains to the required

D.9.4.3.3 Foreign Material limitations : The percentage deleterious substances in sand delivered to the mixer shall

not exceeding the following :

Sr. Foreign Material Percentage by weight

No. Uncrushed Crushed

1 Material finer than 75 micron IS sieve 3.0

3 Coal and Lignite 1.0

4 Clay Lumps 1.0

D.9.4.3.4 Gradation : Unless otherwise directed or approved by the Engineer-in-charge, the grading of sand shall

be within the limits indicated hereunder.

IS : Sieve Designation

Grading Grading Grading Grading

Zone-I Zone-II Zone-III Zone-IV

D.9.4.3.4.1 Where the grading falls outside the limits of any particular grading zone of sieves, other than 600 microns

IS sieve, by total amount not exceeding 5%, it shall be regarded as falling within that grading zone. This

IS sieve, by total amount not exceeding 5%, it shall be regarded as falling within that grading zone. This

tolerance shall not be applied to percentage passing the 600 micron IS sieve or to percentage passing any

other sieve on the coarser limit of grading zone I or the finer limit of grading zone IV. Fine aggregates

conforming to grading zone IV shall not be used. Mix designs and preliminary tests shall show its

suitability for producing concrete of specified strength and workability.

D.9.4.3.5 Fineness Modulus

The sand shall have a fineness modulus of not less than 2.2 or more than 4.2. The fineness modulus is

determined by adding the cumulative percentages retained on the following IS sieve sizes (4.75 mm,

mm, 1.18 mm, 600 microns and 150 microns) and dividing the sum by

D.9.4.4 Coarse Aggregate

D.9.4.4.1 Coarse aggregate for concrete, except as noted above, shall conform to IS 383 and IS 2386. This shall

consist of crushed stone and shall be clean and free from elongated, flaky or laminated pieces, adhering

coatings, clay lumps, coal residue, clinkers, slag, alkali, mica, organic matter or other deleterious matter.

D.9.4.4.2 Screening and Washing : Crushed rock shall be screened and or washed for the removal of dirt or dust

coating, if so requested by the Engineer-in-charge.

D.9.4.4.3 Grading

D.9.4.4.3.1 Coarse aggregate shall be either in single size or graded, in both cases the grading shall be within the

following limits :

IS Percentage passing for single sized Percentage passing for graded

Sieve Aggregate of normal size aggregate of normal size

D.9.4.4.3.2 The pieces shall be angular in shape and shall have granular or crystalline surfaces. Friable, flaky and

laminated pieces, mica and shale, if present, shall be only within tolerance limits which will not affect

adversely the strength and or durability or concrete. The maximum size of coarse aggregate shall be

mm for M7.5 and M10 and 20 mm for M15 to M20 concrete, or as directed by the Engineer-in-charge or

specified otherwise. The maximum size of coarse aggregate shall be the maximum size specified above

but in no case greater than ¼th of the minimum thickness of the member, provided that the concrete can

be placed without difficulty so as to surround all reinforcement thoroughly and fill the corners of the

form. For plain concrete the maximum size of aggregate shall be of 40 mm. for heavily reinforced

concrete members, the nominal maximum size of the aggregate shall be 5 mm less than the minimum

clear distance between the reinforcing main bars or 5 mm less than the minimum cover reinforcement

whichever is smaller.

D.9.4.4.4 Foreign material limitations

D.9.4.4.4.1 The percentage of deleterious materials in the aggregate delivered to the mixer shall not exceed the

Sr. Foreign Material Percentage by weight

No. Uncrushed Crushed

1 Material finer than 75 micron 3.0

2 Coal and lignite 1.0

3 Clay lumps 1.0

4 Soft fragments 3.0 --

D.9.4.5.1 Water used for both mixing and curing shall conform to IS : 456. Potable water is generally satisfactory.

Water containing any excess of acid, alkali, sugar or salt shall not be used.

D.9.4.6 Reinforcement

D.9.4.6.1 Reinforcement bars shall conform to IS : 432, IS : 226 or IS : 1786 and the welded wire fabric to IS :

as shown or specified on the drawings.

D.9.4.6.2 All reinforcement shall be clean, free from pitting, oil, grease, paint, loose mill scales, rust, dirty dust or

any other substance that will destroy or reduce bond.

D.9.4.6.3 If permitted by Engineer, welding of reinforcement shall be done in accordance with IS ; 2751 or IS :

D.9.4.6.4 Reinforcement shall be TMT Fe-500.

D.9.4.7 Admixtures

D.9.4.7.1 Accelerating, retarding, water-reducing and air entraining admixtures shall conform to IS : 9103 and

integral water proofing admixtures to IS :

D.9.4.7.2 Admixtures may be used in concrete as per manufacturer’s instructions only with the approval of

Engineer based upon evidence that with the passage of time neither the compressive strength nor its

durability is reduced. An admixture’s suitably and effectiveness shall be verified by trial mixes with the

other material used in the works. If two or more admixtures are to be used simultaneously in the same

concrete mix, their interaction shall be checked and trial mixes done to ensure their compatibility. There

should also be no increase in risk of corrosion of the reinforcement or other embedments.

D.9.4.7.3 Calcium chloride shall not be used for accelerating set of the cement for any concrete containing

reinforcement or embedded steel parts. When calcium chloride is permitted such as in mass concrete

works, it shall be dissolved in water and added to the mixing water by an amount not exceeding

percent of the weight of the cement in each batch of concrete. The designed concrete mix shall be

corrected accordingly.

D.9.4.8 Wastage

D.9.4.8.1 No wastage allowance for cement and steel shall be considered and paid for.

D.9.5 SAMPLES AND TESTS

D.9.5.1 All materials used for the works shall be tested before use.

D.9.5.2 Manufacturer’s test certificate shall be furnished, for each batch of cement / steel and when directed by

Engineer samples shall also be got tested by the Contractor in a laboratory approved by Engineer at no

extra cost to Client. However, where material is supplied by Client, all testing charges shall be borne by

Client; but transportation of material samples to the laboratory shall have to be done by Contractor at no

D.9.5.3 Sampling and testing shall be as per IS : 2386 under the supervision of Engineer. The cost of all tests,

sampling etc. shall be borne by Contractor.

D.9.5.4 Water to be used shall be tested to comply with requirement of IS :

D.9.5.5 Contractor shall furnish manufacturer’s test certificates and technical literature for the admixture

proposed to be used. If directed the admixture shall be got tested and approved laboratory at no extra

D.9.6 STORING OF MATERIALS

D.9.6.1 All material shall be stored in a manner so as to prevent its deterioration and contamination which would

preclude its use in the works. Requirements of IS : 4082 shall be complied with.

D.9.6.2 Contractor will have to make his own arrangements for the storage of adequate quantity of cement even

if cement is supplied by Client. Cost of such rejected cement, where cement is supplied by Client, shall be

recovered at issue rate or open market rate which ever is higher. Cement bags shall be stored in dry

weatherproof shed with a raised floor, well away from the outer walls and insulated from the floor to

avoid moisture from ground. Not more than 15 bags shall be stacked in any tier. Storage arrangement

shall be approved by Engineer. Storage under tarpaulins shall not be permitted. Each consignment of

cement shall be stored separately and consumed in its order or receipt.

D.9.6.3 Each size of coarse and fine aggregates shall be stacked separately and shall be protected from leaves

and contamination with foreign material. The stacks shall be on hard, clean, free draining bases, draining

away from the concrete mixing area.

D.9.6.4 Contractor shall make his own arrangements for storing water at site in tanks to prevent contamination.

D.9.6.5 The reinforcement shall be stacked on top of timber sleepers to avoid contract with ground / water. Each

type and size shall be stacked separately.

D.9.7.1 General

Concrete grade shall be as designated on drawings. In concrete grade M15, M20, M25 etc. the number represents the specified characteristic

compressive strength of 150 mm cube at 28 days, expressed in N/sq.mm as per IS : 456. Concrete in the works shall be “Design Mix Concrete” or

“Normal Mix Concrete”. All concrete works of grade M5, M7.5,M-10 and M15 shall be Nominal whereas all other grades, M20 and above,

shall be Design Mix Concrete.

D.9.7.2 Design Mix Concrete

D.9.7.2.1 Mix Design and Testing

D.9.7.2.1.1 For Design Mix Concrete, the mix shall be designed according to IS : 10262 and SP: 23 to provide the

grade of concrete having the required workability and characteristics strength not less than appropriate

values given in IS : 456. The design mix shall in addition be such that it is cohesive and does not segregate

and should result in dense and durable concrete and also capable of giving the finish as specified. For

water retaining structures, the mix shall also result in water-tight concrete. The Contractor shall exercise

great care while designing the concrete mix and executing the works to achieve the desired result.

D.9.7.2.1.2 Unless otherwise specifically mentioned, the minimum cement content for Design Mix Concrete shall be as given below.

Grade of Concrete Minimum Cement Content in

Kg/Cu.m of concrete

The minimum cement content stipulated above shall be adopted irrespective of whether the Contractor

achieves the desired strength with less quantity of cement. The Contractor’s quoted rates for concrete

shall provide for the above eventually and nothing extra shall become payable to the Contractor in this

account. Even in the case where the quantity of cement required is higher than that specified above to

achieve desired strength based on an approved mix design, nothing extra shall become payable to the

D.9.7.2.1.3 It shall be Contractor’s sole responsibility to carry out the mix designs at his own cost. He shall furnish to

Engineer at least 30 days before concreting operations, a statement of proportions proposed to be used

for the various concrete mixes and the strength results obtained. The strength requirements of the

concrete mixes ascertained on 150 mm cubes as per IS : 516 shall comply with the requirements of IS :

Grade of Minimum Compressive Specified

Compressive strength

(N/Sq.mm at 7 days)

(N/Sq.mm at 28 days)

D.9.7.2.1.4 A range of slumps, which shall generally be used for various types of construction unless otherwise

instructed by the Engineer is given below :

Structure / Member Slump in millimeters

Maximum Minimum

Reinforced foundation walls and footings 75

Plain footings, caissons and substructure walls 75

T.G. and massive compressor foundations 50

Slabs, beams and reinforced walls 100

Pumps and miscellaneous equipment foundations 75

Building columns 100

Heavy mass construction 50

D.9.7.2.2 Batching and Mixing of Concrete

D.9.7.2.2.1 Proportions of aggregates and cement, as decided by the concrete mix design, shall be by weight. These

proportions shall be maintained during subsequent concrete batching by means of weigh batchers

capable of controlling the weights within one percent of the desired value.

D.9.7.2.2.2 Amount of water added shall be such as to produce dense concrete of required consistency, specified

strength and satisfactory workability and shall be so adjusted to account for moisture content in the

aggregates. Water cement ratio specified shall be maintained. Each time the work stops, the mixer shall

be cleaned out, and while recommencing, the first batch shall have 10% additional cement to allow for

sticking in the drum.

D.9.7.2.2.3 Arrangement should be made by Contractor to have the cubes tested in an approved laboratory or in

field at his own expense, with prior consent of Engineer. Sampling and testing of strength and

workability of concrete shall be as per IS : 1199, IS : 516 and IS :

D.9.7.3 Nominal Mix Concrete

D.9.7.3.1 Mix Design and Testing

D.9.7.3.1.1 Mix design and preliminary tests are not necessary for Nominal mix Concrete. However works tests shall

be carried out as per IS : 456. Proportions for Nominal Mix Concrete and water / cement ratio may by

adopted as per Table 3 of IS : 456. However it will be Contractor’s sole responsibility to adopt appropriate

nominal mix proportions to yield the specified strength.

D.9.7.3.2 Batching and Mixing Concrete

D.9.7.3.2.1 Based on the adopted nominal mixes, aggregates and cement shall be measured by weight.

D.9.8 FORM WORK

D.9.8.1 Form work shall be all inclusive and shall consist of but not limited to shores, bracings, sides of footings,

walls, beams and columns, bottom of slabs etc. including ties, anchors, hangers, inserts, falsework,

D.9.8.2 The design and engineering of the formwork as well as its construction shall be the responsibility of

Contractor. However, if so desired by Engineer the drawings and calculations for the design of the

formwork shall be submitted to Engineer for approval.

D.9.8.3 Formwork shall be designed to fulfill the following requirements :

a) Sufficiently rigid and tight to prevent loss of grout or mortar from the concrete at all stages and

appropriate to the methods of placing and compacting.

b) Made of suitable materials.

c) Capable of providing concrete of the correct shape and surface finish within the specified

tolerance limits.

d) Capable of withstanding without deflection the worst combination of self weight, reinforcement

and concrete weight, all loads and dynamic effects arising from construction and compacting

activities, wind and weather forces.

e) Capable of easily striking without shock, disturbance or damage to the concrete.

f) Soffit forms capable of imparting a camber if required.

g) Soffit forms and supports capable of being left in position if required.

h) Capable of being cleaned and / or coated if necessary immediately prior to casting the concrete;

design temporary openings where necessary for these purposes and to facilitate the preparation

of construction joints.

D.9.8.4 The formwork may be of timber, plywood, steel, plastic or concrete depending upon the type of finish

specified. Sliding forms and slip for may be used with the approval of Engineer. Timber for formwork

shall be well seasoned, free from sap, shakes, loose knots, work holes, warps and other surface defects.

Joints between formwork and formwork and between formwork and structures shall be sufficiently tight

to prevent loss of slurry from concrete, using seals if necessary.

D.9.8.5 The faces of formwork coming in contact with concrete shall be cleaned and two coats of approved

mould oil applied before fixing reinforcement. All rubbish, particularly chippings, shavings, sawdust, wire

pieces dust etc. shall be removed from the interior of the forms before the concrete is placed. Where

directed, cleaning of forms shall be done by blasting with a jet of compressed air at no extra cost.

D.9.8.6 Forms intended for reuse shall be treated with care. Forms that have deteriorated shall not be used.

Before reuse, all forms shall be thoroughly scraped, cleaned, nails removed, holes suitably plugged, joints

repaired and warped lumber replaced to the satisfaction of Engineer. The Contractor shall equip himself

with enough shuttering to allow for wastage so as to complete the job in time.

D.9.8.7 Permanent formwork shall be checked for its durability and capability with adjoining concrete before it is

used in the structure. It shall be properly anchored to the concrete.

D.9.8.8 Wire ties passing through beams, columns and walls shall not be allowed. In their placed bolts passing

through sleeves shall be used. Formwork spacers left in situ shall not impair the desired appearance or

durability of the structure by causing spalling, rust staining or allowing the passage or moisture.

D.9.8.9 For liquid retaining structures sleeves shall not be provided for through bolts or shall through bolts be

removed if provided. The bolts, in the latter case, shall be cut at 25 mm depth from the surface and the

hole made good by cement mortar of the same proportion as the concrete just after striking the

D.9.8.10 Where specified or shown on drawings, all corners and angles exposed in the finished structure shall

have chamfers or fillets of 20 mm x 20 mm size.

D.9.8.11 Forms for substructure may be omitted when, in the opinion of Engineer, the open excavation is firm

enough (in hard non-porous soils) to act as a form. Such excavations shall be slightly larger, as directed

by Engineer, than that required as per drawing to compensate for irregularities in excavation.

D.9.8.12 The Contractor shall provide adequate props carried down to a firm bearing without overloading any of

the structures.

D.9.8.13 The shuttering for beams and slabs shall be so erected that the side shuttering of beams can be removed

without disturbing the bottom shuttering. If the shuttering for a column is erected for the full height of

the column, one side shall be built up in sections as placing of concrete proceeds or windows left for

placing concrete from the side limit the drop of concrete to 1.0 m or as directed by Engineer. The

Contractor shall temporarily and securely fix items to be cast in (embedments / inserts) in a manner that

will not hinder the striking of forms or permit loss of grout.

D.9.8.14 Formwork showing excessive distortion, during any stage of construction, shall be repositioned and

strengthened. Placed concrete affected by faulty form work, shall be entirely removed and formwork

corrected prior to placement of new concrete at the cost of the Contractor.

D.9.8.15 The striking time for formwork shall be determined based on following requirements :

a) Development of adequate concrete strength;

b) Permissible deflection at time of striking form work;

c) Curing procedure employed – its efficiency and effectiveness;

d) Subsequent surface treatment to be done;

e) Prevention of thermal cracking at re-entrant angles;

f) Ambient temperature; and

g) Aggressiveness of the environment (unless immediate adequate steps are taken to

prevent damage to the concrete).

D.9.8.16 Under normal circumstances (generally where temperatures are above 20 Deg. C) forms may be struck

after expiry of the time period given in IS : 456, unless directed otherwise by Engineer. For portland

pozzolona / slag cement the stripping time shall be suitably modified as directed by the Engineer. It is

the Contractor’s responsibility to ensure that forms are not struck until the concrete has developed

sufficient strength to support itself, does not undergo excessive deformation and resist surface damage

and any stressed arising during the construction period.

D.9.9 Reinforcement Workmanship

D.9.9.1 Reinforcing bars supplied bent or in coils shall be straightened cold without damage at no extra cost. No

bending shall be done when ambient temperature is below 5 Deg. C. Local warming may be permitted if

steel is kept below 100 Deg. C.

D.9.9.2 All bars shall be accurately bent gradually and according to the sizes and shapes shown on the drawings /

schedules or as directed by Engineer.

D.9.9.3 Re-bending or straightening incorrectly bent bars shall not be done without approval of Engineer.

D.9.9.4 Reinforcement shall be accurately fixed and maintained firmly in the correct position by the use of

blocks, spacers, chairs, binding wire etc. to prevent displacement during placing and compaction of

concrete. The tied in place reinforcement shall be approved by Engineer prior to concrete placement.

Spacers shall be of such materials and designs as will be durable, not lead to corrosion of the

reinforcement and not cause spalling of the concrete cover.

D.9.9.5 Binding wire shall be 16 gauge soft annealed wire. Ends of the binding wire shall be bent away from the

concrete surface and in no case encroach into the concrete cover.

D.9.9.6 Substitution of reinforcement, laps / splices not shown on drawing shall be subject to Engineer’s

D.9.10 TOLERANCES

D.9.10.1 Tolerance for formed and concrete dimensions shall be as per IS : 456 unless specified otherwise.

D.9.10.2 Tolerances specified for horizontal or vertical building lines or footings shall not be construed to permit

encroachment beyond the legal boundaries.

D.9.11 PREPARATION PRIOR TO CONCRETE PLACEMENT

D.9.11.1 Before concrete is actually placed in position, the inside of the formwork shall be cleaned and mould oil

applied, inserts and reinforcement shall be correctly positioned and securely held, necessary openings,

pockets etc. provided.

D.9.11.2 All arrangements formwork, equipment and proposed procedure, shall be approved by Engineer. The

Contractor shall maintain separate Pour Card for each pour and shall produce before commencement of

concreting to Engineer-in-charge.

D.9.12 TRANSPORTING, PLACING AND COMPACTING CONCRETE

D.9.12.1 Concrete shall be transported from the mixing plant to the formwork with minimum time lapse by

methods that shall maintain the required workability and will prevent segregation, loss of any ingredients

or ingress of foreign matter or water.

D.9.12.2 In all cases concrete shall be deposited as nearly as practicable directly in its final position. To avoid

segregation concrete shall not be rehandled or caused to flow. For locations where direct placement is

not possible and in narrow forms. The Contractor shall provide suitable drops and ‘Elephant Trunks’.

Concrete shall not be dropped from a height of more than 1.0 m as stipulated in clause D.9.8.13.

D.9.12.3 Concrete shall not be placed in flowing water. Under water, concrete shall be placed in position by

tremies or by pipeline from the mixer and shall never be allowed to fall freely through the water.

D.9.12.4 While placing concrete the Contractor shall proceed as specified below and also ensure the following :

a) Continuously between construction joints and predetermined abutments.

b) Without disturbance to forms or reinforcement.

c) Without disturbance to pipes, ducts, fixings and the like to be cast in; ensure that such items are

securely fixed. Ensure that concrete cannot enter open ends of pipes and conduits etc.

d) Without dropping in a manner that could cause segregation or shock.

e) In deep pours only when the concrete and formwork designed for this purpose and by using

suitable chutes or pipes.

f) Do not place if the workability is such that full compaction cannot be achieved.

g) Without disturbing the unsupported sides of excavations; prevent contamination of concrete

with earth. Provide sheeting if necessary. In supported excavations, withdraw the lining

progressively as concrete is placed.

h) If placed directly onto hardcore or any other porous material, dampen the surface to reduce loss

of water from the concrete.

i) Ensure that there is no damage or displacement to sheet membranes.

j) Record the time and location of placing structural concrete.

D.9.12.5 Concrete shall normally be compacted in its final position within thirty minutes of leaving the mixer.

Concrete shall be compacted during placing with approved vibrating equipment without causing

segregation until it forms a solid mass free from voids thoroughly worked around reinforcement and

embedded fixtures and into all corners of the formwork. Immersion vibrators shall be inserted vertically

at points not more than 450 mm apart and withdrawn slowly till air bubbles cease to come to surface,

leaving no voids. When placing concrete in layers advancing horizontally, care shall be taken to ensure

adequate vibration, blending and melding of the concrete between successive layers. Vibrators shall not

be allowed to come in contact with reinforcement, formwork and finished surfaces after start of initial

set. Over vibration shall be avoided.

D.9.12.6 Concrete may be conveyed and placed by mechanically operated equipment after getting the complete

procedure approved by Engineer. The slump shall be held to the minimum necessary for conveying

concrete by this method. When concrete is to be pumped concrete mix shall be specially designed to suit

pumping. Care shall be taken to avoid stoppages in work once pumping has started.

D.9.12.7 Except when placing with slip forms, each placement of concrete in multiple lift work, shall be allowed to

set for at least 24 hours after the final set of concrete before the start of subsequent placement. Placing

shall stop when concrete reaches the top of the opening in walls or bottom surface of slab, in slab and

beam construction, and it shall be resumed before concrete takes initial set but not until it has had time

to settle as determined by Engineer. Concrete shall be protected against damage until final acceptance.

D.9.13 MASS CONCRETE WORKS

D.9.13.1 Sequence of pouring for mass concrete works shall be as approved by Engineer. The Contractor shall

exercise great care to prevent shrinkage cracks and shall monitor the temperature of the placed concrete

D.9.14.1 Curing and protection shall start immediately after the compaction of the concrete to protect it from :

(a) premature drying out, particularly by solar radiation and wind;

(b) leaching out by rain and flowing water;

(c) rapid cooling during the first few days after placing;

(d) high internal thermal gradients;

(e) low temperature of frost;

(f) vibration and impact which may disrupt the concrete and interfere with its bond to the

D.9.14.2 All concrete, unless directed otherwise by Engineer, shall be cured by use of continuos sprays or ponded

water or continuously saturated coverings of sacking, canvas, hessain or other absorbent material for the

period of complete hydration with a minimum of 7 days. The quality of curing water shall be the same as

that used for mixing.

D.9.14.3 Where a curing membrane is directed to be used by the Engineer, the same shall be of a non-wax base

and shall not impair the concrete finish in any manner. The curing compound to be used shall be got

approved from the Engineer before use and shall be applied with spraying equipment capable of a

smooth, even textured coat.

D.9.14.4 Curing may also be done by covering the surface with an impermeable material such as polyethylene,

which shall be well sealed and fastened.

D.9.14.5 Extra precautions shall be exercised in curing concrete during cold and hot weather.

D.9.15 CONSTRUCTION JOINTS AND KEYS

D.9.15.1 Construction joints will be as shown on the drawing or as approved by Engineer. Concrete shall be

placed without interruption until completion of work between construction joints. If stopping of

concreting becomes unavoidable anywhere, a properly formed construction joint shall be made with the

approved of Engineer.

D.9.15.2 Dowels for concrete work, not likely to be taken up in the near future, shall be coated with cement slurry

and encased in lean concrete as indicated on the drawings or as directed by Engineer.

D.9.15.3 Before resuming concreting on a surface which has hardened all laitance and loose stone shall be

thoroughly removed by wire brushing / hacking and surface washed with high pressure water jet and

treated with thin layer of cement slurry for vertical joints and a 15 mm thick layer of cement sand mortar

for horizontal layers, the ratio of cement and sand being the same as in the concrete mix.

D.9.15.4 When concreting is to be resumed on a surface which has not fully hardened, all laitance shall be

removed by wire brushing, the surface wetted, free water removed and a coat of cement slurry applied.

On this a layer of concrete not exceeding 150 mm thickness shall be placed and well rammed against the

old work. Thereafter work shall proceed in the normal way.

D.9.17.1 General

D.9.17.1.1 The formwork for concrete works shall be such as to give the finish as specified. The Contractors shall

make good as directed any unavoidable defects consistent with the type of concrete and finish specified;

defects due to bad workmanship (e.g. damaged or misaligned forms, defective or poorly compacted

concrete) will not be accepted. The Contractor shall construct the formwork using the correct materials

and to meet the requirements of the design and to produce finished concrete to required dimensions,

plumbs, planes and finishes.

D.9.17.2 Surface finish Type F1

D.9.17.2.1 This type of finish shall be for non-exposed concrete surface against which back fill or concrete is to be

placed. The main requirement is that of dense, well compacted concrete. No treatment is required

except repair of defective areas, filling all form tie holes and cleaning up of loose or adhering debris. For

surfaces below grade which will receive waterproofing treatment the concrete shall be free of surface

irregularities which could interfere with proper and effective application or waterproofing material

specified for use.

D.9.17.3 Surface finish Type F2

D.9.17.3.1 This type of finish shall be for all concrete work which will be exposed to view upon completion of the

job. The appearance shall be that of a smooth dense, well-compacted concrete showing the slight marks

of well fitted shuttering joints. The Contractor shall make good any blemishes.

D.9.17.4 Surface finish Type F3

D.9.17.4.1 This type of finish shall be for concrete work which will be exposed to view but to give an appearance of

smooth, dense, well-compacted concrete with no shutter marks, stain free and with no discoloration,

blemishes, arrises, air holes etc. Only lined or coated plywood with very tight joints shall be used to

achieve this finish. The panel size shall be uniform and as large as practicable. Any minor blemishes that

might occur shall be made good by Contractor.

D.9.17.5 Integral cement finish on concrete floor

D.9.17.5.1 In all cases where integral cement finish on a concrete floor has been specified, the top layer of concrete

shall be screened off to proper level and tamped with tamper having conical projections so that the

aggregate shall be forced below the surface. The surface shall be finished with a wooden float and a

trowel with pressure. The finish shall be continued till the concrete reaches its initial set. No cement or

cement mortar finish shall be provided on the surface. Where specified, a floor hardener as approved by

the Engineer shall be supplied and used as recommended by the manufacturer.

D.9.18 REPAIR AND REPLACEMENT OF UNSATISFACTORY CONCRETE

D.9.18.1 Immediately after the shuttering is removed, all the defective areas such as honey-combed surfaces,

rough patches, holes left by form bolts etc. shall be brought to the notice of Engineer who may permit

patching of the defective areas or reject the concrete work.

D.9.18.2 All through holes for shuttering shall be filled for full depth and neatly plugged flush with surface.

D.9.18.3 Rejected concrete shall be removed and replaced by Contractor at no additional cost to Client.

D.9.18.4 For patching of defective areas all loose materials shall be removed and the surface shall be prepared as

directed by the Engineer.

D.9.18.5 Bonding between hardened and fresh concrete shall be done either by placing cement mortar or by

applying epoxy. The decision of the Engineer as to the method of repairs to be adopted shall be final and

binding on the Contractor and no extra claim shall be entertained on this account. The surface shall be

saturated with water for 24 hours before patching is done with 1:5 cement sand mortar. The use of

epoxy for bonding fresh concrete shall be carried out as directed by Engineer.

D.9.19 VACUUM DEWATERING OF SLABS

D.9.19.1 Where specified floor slabs, either on grade or suspended, shall be finished by vacuum dewatering

including all operations such as poker vibration, surface vibration, vacuum processing, floating and

trowelling as per equipment manufacturers recommendation. The equipment to be used shall be subject

to Engineer’s approval.

D.9.20 HOT WEATHER REQUIREMENTS

D.9.20.1 Concreting during hot weathers shall be carried out as per IS : 7861 (Part – I)

D.9.20.2 Adequate provisions shall be made to lower concrete temperatures which shall not exceed 40 Deg. C at

the time of placement of fresh concrete.

D.9.20.3 Where directed by Engineer, Contractor shall spray non-wax based curing compound of unformed

concrete surfaces at no extra costs.

D.9.21 COLD WEATHER REQUIREMENTS

D.9.21.1 Concreting during cold weather shall be carried out as per IS : 7861 (Part-II).

D.9.21.2 The ambient temperature during placement and upto final set shall not fall below 5 Deg. C. Approved

antifreeze / accelerating additives shall be used where directed.

D.9.21.3 For major and large scale concreting works the temperature of concrete at times of mixing and placing,

the thermal conductivity of the formwork and its insulation and stripping period shall be closely

D.9.22 LIQUID RETAINING STRUCTURES

D.9.22.1 The Contractor shall take special care of concrete for liquid retaining structures, underground structures

and those others specifically called for to guarantee the finish and water tightness.

D.9.22.2 The minimum level of surface finish for liquid retaining structures shall be type F2. All such structures

shall be hydro-tested.

D.9.22.3 The Contractor shall include in his price of hydro-testing of structure, all arrangements for testing such as

temporary bulk heads, pressure gauges, pumps, pipelines etc.

D.9.22.4 Any temporary arrangements that may have to be made to ensure stability of the structures shall also be

considered to have been taken into account while quoting the rates.

D.9.22.5 Any leakage that may occur during the hydro-test or subsequently during the defects liability period or

the period for which the structure is guaranteed shall be effectively stopped either by cement / epoxy

pressure grouting, guniting or such other methods as may be approved by the Engineer. All such

rectification of the Client / Engineer at no extra cost to the Client.

D.9.23 TESTING CONCRETE STRUCTURES FOR LEAKAGE

D.9.23.1 Hydro-static test for water tightness shall be done at full storage by Engineer, as described below :

D.9.23.1.1 In case of structures whose external faces are exposed, such as elevated tanks, the requirements of the

test shall be deemed to be satisfied if the external faces show no sign of leakage or sweating and remain

completely dry during the period of observation of seven days after allowing a seven day period for

absorption after filling with water.

D.9.23.1.2 In the case of structures whose external faces are submerged and are not accessible for inspection, such

as underground tanks, the structures shall be filled with water and after the expiry of seven days after

the filling, the level of the surface of the water shall be recorded. The level of water shall be recorded

again at subsequent intervals of 24 hrs. over a period of seven days. Backfilling shall be withheld till the

tanks are tested. The total drop in surface level over a period for seven day shall be taken as an

indication of the water tightness of the structure. The Engineer shall decide on the actual permissible

nature of this drop in the surface level, taking into account weather the structures are open or closed and

the corresponding effect it has on evaporation losses. Unless specified otherwise, a structure whose top

is covered shall be deemed to be water tight if the total drop in the surface level over a period of seven

days does not exceed 40 mm.

D.9.23.1.3 Each compartment / segment of the structure shall be tested individually and then all together.

D.9.23.2 For structures such as pipes, tunnels etc. the hydro-static test shall be carried out by filling with water,

after curing as specified, and subjecting to the specified test pressure for specified period. If during this

period the loss of water does not exceed the equivalent of the specified rate, the structure shall be

considered to have successfully passed the test.

Item No: 10 Providing formwork of ordinary timber planking so as to give a rough finish including centering,

shuttering and propping etc. height of propping and centering below supporting floor to ceiling not

exceeding 4.00mt and removal of the same for insitu reinforced concrete and plain concrete work in

(A) Foundations, footings, bases of columns etc. and mass concrete.

1.1 The shuttering to be provided shall be of ordinary timber planks and shall conform to M-26.

1.2 The dimensions of scantlings and battens shall conform to the design. The strength of the wood shall not be less

than that assumed in the design.

2.0 Workmanship:

2.1 The form work shall conform to the shape lines and dimension as shown on the plans and be so constructed as to

remain sufficiently rigid during the placing and compacting of the concrete. Adequate arrangements shall be

made by the contractor to safe guard against any settlement of the form work during the course of concreting

and after concreting. The form work of shuttering, centering, scaffolding bracing etc shall be as per design.

2.2 Cleaning & Treatment of forms:

2.2.1 All rubbish, particularly chippings shaving and saw dust shall be removed from the interior of the form before the

concrete is placed and the form work in contact with concrete shall be cleaned and thoroughly wetted or treated.

The surface shall be then coated with soap solution applied before concreting is done. Soap solution for the

purpose shall be prepared by dissolving yellow soap in water to get consistency of paint. Alternatively a coat of

raw linseed oil or form oil of approved manufacture may be applied in case steel shuttering is used. Soap solution

or raw linseed oil shall be applied after thoroughly cleaning the surface. Care shall be taken that the coating does

not get on construction joint surface and reinforcement bars.

2.3 Stripping time:

2.3.1 In normal circumstances and where ordinary cement is used forms may be struck after expiry of following

(a) Sides of walls columns and vertical faces of beam 24 to 48 hours.

(b) Beams soffits (Props left under) 7 days.

(c) Removal of props slabs

(i) Slabs spanning up to 4.5 m – 7 days (ii) Spanning over 4.5 mm 14 days

(d) Removal of props to beams and arches

(i) Spanning up to 6 m – 14 days (ii) Spanning over 6 m 21 days

2.4 Procedure when removing the form work:

2.4.1 All form work shall be removed without such shock or vibration as would damage the reinforced concrete

surface. Before the soffits form work and struts are removed, the soffits and the concrete surface shall be

exposed where necessary in order to ascertain that the concrete has sufficiently hardened.

2.5.1 The centering to be provided shall be got approved. It shall be sufficiently strong to ensure absolute safely of the

form work and concrete work before, during and after pouring concrete. Watch should be kept to see that

behavior of centering and form work is satisfactory during concreting. Erection should also be such that it would

allow removal of forms in proper sequence without damaging either the concrete or the forms to be removed.

2.5.2 The props of centering shall be provided on firm foundation or base of sufficient strength to carry the loads

without any settlement.

2.5.3 The centering and form work shall be inspected and approved by the Engineer-in-charge before concreting. But

this will not relieve the contractor of his responsibility for strength, adequacy and safety of form work and

centering. If there is a failure of form work or centering, contractor shall be responsible for the damages to the

work, injury to life and damage to property.

2.6 Scaffolding:

2.6.1 All scaffolding, hoisting arrangements and ladders etc required for the facilitating of concreting shall be provided

and removed on completion work by contractor at his own expense. The scaffolding, hoisting arrangements and

ladders etc. shall be strong enough to with stand all live, dead and impact loads expected to act and shall be

subject to the approval of the Engineer-in-charge. However, contractor shall be solely responsible for the safety

of the scaffolding, hoisting arrangement, ladders, work and workman etc.

2.6.2 The scaffolding hoisting arrangements and ladders shall allow easy approach to the work spot and afford easy

2.6.3 The rate is applicable to all conditions of working and height up to 4 mts. The rate shall include the cost of

materials and labour for various operations involved such as:

(a) Splayed edges, notching, allowance for overlaps and passing at angles, battens centering, shuttering propping,

bolting, nailing, wedging, easing, striking and removal.

(b) Filleting to form stop chamfered edges or splayed external angles not exceeding 20 mm width to beams, columns

(c) Temporary openings in the forms for pouring concrete, if required, removing rubbish etc.

(d) Dressing with oil to prevent adhesion of concrete with shuttering, and

(e) Raking or circular cutting.

2.7.1 Before re use all forms shall be inspected by Engineer-in-charge and their suitability ascertained. The forms shall

be scarred, cleaned, and joints gone over, repaired where required. Inside surface shall be retreated to prevent

adhesion of concrete.

3.0 Mode of measurements & payment:

3.1 Form work shall be measured as the area in square meters of shuttering in contract with concrete except in the

case of inclined member and portion of curved profile and upper side in which case only area of underside shall

be measured for payment.

3.2 Form work to secondary beams shall be measured up to the sides of main beams but no deduction shall be made

from the form work of the main beam at the inter section point. No. deduction shall be made from the form work

of a column at inter section of beams.

3.3 The rate is for the completed item.

3.4 The rate shall be for a unit of one Sq. meter

Item No: 11 Providing TMT Bars FE 500D reinforcement for RCC work Including bending, binding

and placing in position complete upto floor two level.

TMT bars shall conform to M-18. Mild steel binding wires shall conform to M-21

The work shall consist of furnishing and placing reinforcement to the shape and dimensions shows as on the

drawings or as directed.

Steel shall be clean and free from rust and loose mill scale at the time of fixing in position and

subsequent concreting.

Reinforcing steel shall conform accurately to the dimensions given in the bar bending schedules shown

on relevant drawings. Bars shall be bent cold to specified shape and dimensions or as directed using a proper

bar bender, operated by hand or power to attain proper radius of bends. Bars shall not be bent or straightened in

a manner that will injure the material. Bars bent during transport or handling shall be straightened before being

used on the work. They shall not be heated to facilitate bending. Unless otherwise specified, a ‘U’ type hook at

the end of each bar shall invariably be provided to main reinforcement. The radius of the bend shall not be less

than twice the diameter of the round bar and the length of straight part of the bar beyond the end of the curve

shall be at least four times the diameter of the round bar. In case of bars which are not round and in case of

deformed bars, the diameter shall be taken as the diameter of circle having an equivalent effective area. The

hooks shall be suitably encased to prevent any

splitting of the concrete.

All the reinforcement bars shall be accurately placed in exact position shown on the drawing and shall be

securely held in position during, metal hangers, supporting wires or other approved devices at sufficiently close

intervals,. Bars shall not be allowed to sag between supports nor displaced during concreting or any other

operations of the work. All devices used for positioning shall be of noncorrodible material. Wooden and metal

supports shall no extend to the surface of concrete, except where shown on drawings. Placing of broken stone or

brick and wooden blocks shall not be allowed. Pieces of broken stone or brick and wooden blocks shall not be

used. Layers of bars shall be separated by spacer bars, precast mortar blocks or other approved devices.

reinforcement after being placed in position shall be maintained in a clean condition until completely embedded in

concrete. Special care shall be exercised to prevent any displacement of reinforcement in concrete already

placed. To prevent reinforcement from corrosion, concrete cover shall be provided as indicated on drawings. All

the bars producing from concrete and to which other bars are to be spliced and which are likely to be exposed for

a period exceeding 10 days shall be protected by a thick coast of neat cement grout.

Bars crossing each other where required shall be secured by binding wires (annealed) of size not less

than 1 mm in such manner that they do not slip over each other at the time of fixing and concreting.

As far as possible, bars of full length shall be used. In case this is not possible, overlapping of bars shall

be done directed. When practicable, overlapping bars shall not touch each other, but be kept apart by 25 mm or

1.25 mm times the maximum size of the coarse aggregate whichever is greater by concrete between them.

Where not feasible, overlapping bars shall be bound with annealed wires not less than 1 mm thick twisted tight.

The overlaps shall be staggered for different bears and located at points along the span where neither shear nor

bending movement is maximum.

Whenever indicated on the drawings or desired by the Engineer- in-charge, bars shall be joined by coup

lings which shall have a cross-section sufficient to transpit the full stresses of bars. The ends of the bars that are

joined by coupling shall be upset for sufficient length so that the effective cross section at the base of threads is

not less than norma l cross-section of the bar. Threads shall be standard threads. Steel for coupling shall

conform to I.S.

When permitted or specified on the drawings, joints of reinforcement bars shall be butt-welded so as to

transmit their full stresses. Welded joints shall preferably be located at points when steel will not be subject to

more than 75 percent of the maximum permissible stresses and welds so staggered that at any one section not

more than 20 percent of the rods are welded. Only electric are welding using a process which excludes air from

the molten metal and conforms to any or all other special provisions for the work shall be accepted. Suitable

means shall be provided for holding bars securely in position during welding. It shall be ensured that no voids are

left in welding and when welding is done in two or three stages, previous surface shall be cleaned properly. Ends

of the bars shall be cleaned of all loose scale, rust, grease, paint and other foreign matter before welding. Only

competent welders shall be employed on the work. the M.S. electrodes used for welding shall conform to I.S.

814. Welded pieces of reinforcement shall be tested. Specimen shall be taken from the actual site and their

number and frequency of test shall be as directed.

For the purpose of payment, the bar shall be measured correct upto 100 mm. length and weight

payable worked out at the rate specified below :

1. 6mm. x 0.22 Kg./Rmt 8. 20mm. 2.47 Kg./Rmt

2. 8mm. x 0.39 Kg./Rmt. 9. 22mm. 2.98 Kg./Rmt

3. 10mm x 0.62 Kg./Rmt 10. 25mm. 3.85 Kg./Rmt

4. 12mm x 0.89 Kg./Rmt 11. 28mm. 4.83 Kg./Rmt

5. 14mm x 1.21 Kg./Rmt 12. 32mm. 6.31 Kg./Rmt

6. 16mm x 1.58 Kg./Rmt 13. 36mm. 7.99 Kg./Rmt

7. 18mm x 3.00 Kg./Rmt 14. 40mm 9.86 Kg./Rmt.

M/s. shall be on kg. basis.

Item No: 12 P/A Trimix with dewatering machine and floater machine on constructed RCC work

incl.cost of machine and labour etc comp as directed.

Mode of Measurement shall be on Smt. Basic.

Item No: 13 Making 15 mm groove in RCC work on road and filling it with polysulfied selant and

finished it good incl. all labour charges etc comp as directed.

Mode of Measurement shall be on RMT basis

Item No: 14 Repairing damaged M.H. and rasing M.H. up to road level incl. removing damaged brick

work and repairing by brick masonry in C.M. 1:5 and plaster in C.M. 1:3 and fixing C.I.

steps and existing MH sheet cover, removing the debris from MH and carting the same as

(A) up to 0.15 mt. (@ Two Coarse)

(B) up to 0.35mt. (@ Four Coarse)

(C) up to 0.65 mt. (@ Seven Coarse)

(D) up to 0.905mt. (@ Four Coarse)

Repairing damaged M.H. incl. removing damaged brickwork and repairing masonry in C.M. 1:6 and plaster in

cm 1:3 and fixing C.I. steps and M.H. cover in C.C. 1:2:4 rate also includes removing debris from M.H. and

carting the same as directed. (A) up to 0.15 mt. depth

The M/s shall be on No. basis.

I HAVE ALSO GONE THROUGH TECHNICAL SPECIFICATIONS FOR THE ITEMS (AS PER STANDARD P.W.D. TECHNICAL

SPECIFICATION FOR THE ITEMS AND ALSO I HAVE THE BOOK OF THE SAME) AND AGREE TO ABIDE BY THEM.

IN CASE OF WHERE IS NO TECHNICAL SPECIFICATION FOR THE ANY ITEMS AVAILABLE, SPECIFICATION GIVEN BY THE

ENGINEER-IN-CHARGE SHALL BE FOLLOWED AND FOR THE SAME I AGREE TO ABIDE BY THEM.

Item No: 15 RCC Precast M.H.Frame & Cover Manufacture , supply & Delivery at store or at side of

work Precast RCC M200 Frame & Cover Suitable to drainage M.H. and as per type design

& Drawing including cost of reinforcement M.S. Angles or Flat , cutting mold work

etc.(GWSSB SOR 2021-22)

SealandSignatureoftheBidder Add.CityEngineer(WestZone)

AmdavadMunicipalCorporation

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ytJNu. œhuf xuLzh œeX yjd R.yub.ze. ChJtle hnuNu. R.yub.ze. hfb Yt. yuf fhtuz mwDele ykœtS< hfblt ftb btxu jtufj btRfh auf,

rzbtLz z[tVx, vu ytuzoh fu cukf duhkxelt MJYvbtk <&t Yt. yuf fhtuz&e Wvhle ykœtS< hfblt ftb btxu R.yub.ze.le hfb btºt rzbtLz z[tVx, vu

ytuzoh fu ckuf duhkxelt MJYvbtk ytvJtle hnuNu.

7. cukf duhuLxe btºt ybœtJtœ Nnuhle s MJefthJtbtk ytJNu.

8. xuLzh Ve <&t R.yub.ze.le hfblt ze.ze./ aufle vtA¤ ftuLx[tfxh©eyu vtu<tle mkM&tlwk ltb <&t btuctRj lkch yJ~g jFJtltu hnuNu. ftuLx[t¾xhu

vtu<tle mkkM&tlt auf <&t ze.ze. xuLzh R~gw &gt <theF ctœlt s ytvJt.

9. Nh<e xuLzhtu hœ ct<j dKtNu.

10. stu xuLzhbtk MvÐ WÕjuF fhtguj ntug <tu atubtmtlu fthKu Ft<tfeg MËalt yLJgu ßgthu ßgthu ftb ck^ htFJtLþk &tg <u mbglu ftble BþÆ<btk bshu

ytvJtbtk ytJNu. vhkðþ yt yLJgu ftuE CtJ J^thtu ytvJtbtk ytJNu lne. sule ltuk^ >huf xuLzhh ujuJe.

11. xuuLzhtu ftuEvK fthK ytÃgt rmJtg MJefthJt fu lrnk MJefthJt <ule mkÃËKo m•tt BGþrlrmvj frbNlh©ele hnuNu.

12. xuLzhbtk stu ftuR mwDtht JDtht ntug <tu <u ykd xuLzh Ch<t vnujt AuÕju ÂœJmu rlg< JucmtRx y&Jt fauheyu sYhe <vtm fhelu s xuLzh btufjJw.

13. mefgtuhexe zevtuÍex/ vVtuboLm duhuLxele hfb Yt. yuf fhtuz mwDele ykœtS< hfblt ftb btxu jtufj btRfh auf, rzbtLz z[tVx, vu ytuzoh fu cukf

duhkxelt MJYvbtk <&t Yt. yuf fhtuz&e Wvhle ykœtS< hfblt ftb btxu mefgtuhexe zevtuÍex/ vhVtuboLm duhkxele hfb btºt rzbtLz z[tVx, vu ytu zoh

fu ckufduhkxelt MJYvbtk ytvJtle hnuNu.

14. ytuljtRl yul-«tufgwh JucmtRx vh&e ChJtlt &<t xuLzhbtk ftuLx[tfxh/ yusLmeyu xuLzhle ntzo ftuvebtk CtJ Cgto Jdhle mne mefft fhe

mcbex fhJtle hnuNu. stu <ubtk CtJ Chuj nNu <tu <uJt xuLzh hœ fhJtbtk ytJNu.

15. dwsht< mhfth ©b,ftuiNÕg ylu htusdth rJCtd îtht XhtJ ¢btf:LED/WRT/e-file/11/2024/0293/M2 mraJtjg ,dtk^eldh

<t.15.02.24 lt XhtJ v{btKu yusLme/¢tuLx[fxhtulu îtht ©bgtude ftgœtle studJtR vhevqKo &tg <u mwrlµ< fhJtlwk hnNu.

16. mœh xuLzhbtk ” GST rl<e rlgb bwsc jtdw vzNu ” <u bwsc dK<he fhe xuLzhtu ChJtlt hnuNu.

zebtLz z[tVx / auf “BgwÂlÂmvj fÂb§h©e, ybœtJtœ” lt ltbltu fZtJJtu.

ybœtJtœ BgwÂlÂmvj ftuvtuohuNl

yu.yth.me. xuLzh- Nh<tu

1. yu.yth.me. xuLzhbtk Jfoytuzh ytÃgt ctœ ftb NY fhJtle mbgbgtoœtbtk ftuLx[tfxh îtht ftb NY fhJtle òK fgto ctœ

24 fjtflt ftb NY lrn fhJtbtk ytJu <tu yLg ftuLx[tfxh vtmu btfuox hux&e ftuLx[tfxhlt Faou ylu stuFbu ftbdehe

fhtJJtbtk ytJNu.

2. ftuLx[tfxhlu Jfoytuzoh ytÃgt ctœ yu.yth.me. «fthlkw xuLzh ntuR ftble sYhegt< bwsc xujeVtulef òK fhe su <u ftb NY

fhJt fnuJtbtk ytJNu ylu su ftble òK fgtolt 24 fjtfbtk NY fhJtbtk lrn ytJu ylu rlg< mbgbgtoœtbtk vwKo fhJtbtk

lrn ytJu <tu su <u ytRxblt SOR CtJ&e 1.5 dKe vulÕxe Jmwj juJtbtk ytJNu.

3. ºtK fu J^w Jth Wvh bwscle yLg ftuLx[tfxh vtmu&e ftbdehe fhtJJtle Vhs vzNu ylu/y&Jt ºtK fu J^w Jth vulÕxe

fhJtle Vhs vzNu <tu <u mkstudtubtk ftuLx[tfxhlu çjufjeMx fhJtbtk ytJNu sule ykr<b m•tt Bgw.frb¹lh©elu hnuNu.

AHMEDABAD MUNICLPAL CORPORATION

MAHANAGAR SEVA SADAN

Clause : 1 Contractor shall not employ any child having age 5 to 15 years as it is prohibited by Child Labour Prohibition and Regulation

Act 1986. Hon'ble Supreme Court has given certain guide lines and as per the guide lines. If child labour is employed on the site work,

the contractor shall have to deposit Rs. 20,000.00 (Rupees Tw enty thousand only) in the child labour welfare fund. If the employer

refuses to deposit then action will be taken for contempt of Supreme Court Judgement and also will be prosecuted by concerned

authority. Because of the breach of any provision of child labour prohibition and regulation Act 1986 by the Contractor & Municipal

Corporation becomes liable to pay any amount then the Municipal Corporation shall recover the said amount from the contractor.

Clause : 2 The Standing Committee has decided to deduct 1/2% amount from each running bill as per its Reso. No. 1783 Date 06--02-

97, but the Municipal Corporation Board has recently decided that the actual testing charge is taken and the remaining amount is

refundable at the time of final bill (As per Muni. Board Reso. No. 123 dated 25-02-97)

Clause : 3 Contractor has to follow prevailing Labour act and has to maintain labour register acordingly,and has to follow other

Clause : 4 Quantity taken in tender are tentative and may differ as per execution of work. No claim shall be entertain regarding

* MODIFICATION OF DOCUMENTS

Modification of specifications and correction/corrigendum in respect of the work if required will be made by A.M.C. The same shall

be placed on A.M.C website which may be downloaded by the tendrers enclosed along with the tender duly signed. These shall form

a part of tender. The tenderer shall not add or amend the text of any of the documents except in so far as may be necessary to

comply with any addendum.

* ADDENDAUM/CORRIGENDUM .

Addendum or corrigendum conveying any change or correction in respect of the work shall form the part of the contract documents.

The full consideration shall be given to such addendum or corrigendum or correction before submission tender duly filled in by the

contractor. Therefore, the contractor shall have to watch such addendum or corrigendum or correction published by A.M.C through

its website www.egovamc.com. Tenderes shall verify the number of addendum issued and enclose the same with the tender

documents,failing which the tender shall be liable for rejection and no any complaint in respect to this shall be entertained under any

CONTRACTOR'S SIGNATURE ADDL.CITY ENGINEER

& STAMP ( West Zone)