Repairing work of breakdown of existing Trunk Main line machineholes near different SPS locations in Central Zone & West zone of AMC area. (ARC Tender) (ARC) (Rs.1.89 Cr) (Single Bid)

Name of Work:- Repairing work of breakdown of existing Trunk Main line machineholes near

different SPS locations in Central Zone & West zone of AMC area. (ARC

Tender) (ARC) (Rs.1.89 Cr) (Single Bid)

Online Submission upto Date :- 15/10/2026 up to 18 : 00 Hrs

Physical Submission upto Date :- 16/10/2026 up to 16 : 00 Hrs

Technical Bid Opening Date :- 17/10/2026 at 17 : 00 Hrs

Detail and Tender available on www.tender.nprocure.com

AHMEDABAD MUNICIPAL CORPORATION

Notice inviting Tender

Competent authority on behalf of Municipal Commissioner of Ahmedabad Municipal

Corporation invites percentage rate sealed tenders from interested contractors for the following

work at different locations within the limit of A.M.C.

1 Name of work Repairing work of breakdown of existing Trunk Main line

machineholes near different SPS locations in Central Zone &

West zone of AMC area. (ARC Tender)

2 Estimated Tender Rs.

3 Tender fee Rs.

(Non refundable) (Demand Draft in favour of Municipal Commissioner, Ahmedabad)

4 Time Limit 12 Months

5 Download of Tender Tenders from the website www.tender.nprocure.com or shall be

Documents down loaded mentioned AS PER TENDER NOTICE INVITED

6 Required registration Register “B” class having in Road Works in PWD in Govt. R&B

/ CPWD / AMC or equivalent register with any other state Govt.

or institutions.

7 Earnest Money Deposit Rs. 1,89,885/- (Demand Draft / pay order / Bank Guarantee in

(Bid security) favour of Municipal Commissioner, Ahmedabad is to be

(1 % of Estimate put to submitted as prescribed as below. Demand Draft/Bank Guarantee

tender) shall be from approved list of AMC of banks and the issuing

branch of bank guarantee shall be of Ahmedabad city only. (As

Per AMC finance Dept . Circular No.10 Dt.01/06/2022)

8 Submission of EMD andTender Fee & EMD should Submitted physically along with

Tender Fees tender documents as described in the invitation of tender should

be submitted to Assistant Manager (PWA), 2nd Floor, B –

Wing, Sardar Patel Bhavan, Danapith, Ahmedabad-380001.

Bid submitted without bid security & tender fee shall be treated

as non responsive and shall be summarily rejected.

9 Mode of sending the The whole tender shall be submitted by two modes.Whole tender

Tender Documents shall be submitted only on www.tender.nprocure.com website as

per Schedule mentioned in Notice inviting Tender.

Tender Fee, EMD, technical bid and other relevant PQ

Documents as per check list given in tender shall be

submitted physically in two copies (Original & duplicate) in

sealed envelope as per Schedule mentioned in Notice inviting

10 Last date of receiving As per Notice inviting Tender / Addendum / Corrigendum. The

Tenders. tenders received after latest schedule date and time will not be

entertained under any circumstances.

11 Submission of Price Bid The Price bid shall be submitted online only. The bidder shall fill

percentage rate on amount of BOQ online only until specified.

Price Bid shall be submitted physically duly signed & seal without

mentioning quoted rated, else it shall be considered as rejected.

12 Opening of Technical bid As per Notice inviting Tender / Addendum / Corrigendum.

13 Tender validity period 120 days from the last date of submission of Tender.

14 Security Deposit Security Deposit shall be at 5 % of the contract value in the form of

bank Guarantee /DD (Bank Guarantee issued from Ahmedabad Branch

only as per para A.4.24).

The security deposit shall be payable in 15 days from date of receipt of

LOI failing which interest will be charged by AMC.

15 Deductions from

a. Retention Money 2 % amount of each Running Bill shall be deducted as a

Retention Money. Such retention money shall be released in the

final bill of the said work.

b. Labour welfare cess Labour welfare cess as per the Act, 1996 (non refundable) shall

be deducted from each running bill.

16 Defect & Liability Period Applicable & refer condition of contract attached over rule as per

form B-1 published by Government.

17 Compansation for Delay If the Contractor fails to complete the work under contract by the

stipulated date, he shall pay liquidated damages of 10% of

remaining work after time limit.

• All the circulars which were published by Authorities of AMC time by time will be

applicable on said Tender and bound to bidder with out any condition.

• Conditional tenders will not be accepted in any case. Municipal Commissioner reserves

the rights to reject any or all the tenders without assigning any reasons thereof.

• The authorized signatory holding Power of Attorney shall only be the Digital Signatory.

In case authorized signatory holding Power of Attorney and Digital Signatory are not the

same, the bid shall be considered non-responsive.

Seal and Signature of the Bidder Additional City Engineer (Drainage Project)

Date: Ahmedabad Municipal Corporation

(On contractor’s Letter Head / certified with Stamp and Sign with Contact Detail)

TENDER DECLARATION FORM

Additional City Engineer

(Drainage Project),

Ahmedabad Municipal Corporation,

Name of Work:- Repairing work of breakdown of existing Trunk Main line machineholes

near different SPS locations in Central Zone & West zone of AMC

I/We the undersigned have carefully gone through and clearly understood the Tender

documents of above mentioned project comprising of Notice Inviting tenders, Articles of

Agreement, Scope of work, Definition of terms, notes Instructions/Information to Bidder,

Condition of Contract, special condition of contract, Appendices, Specifications, Bill of

Quantities, furnished by AHMEDABAD MUNICIPAL CORPORATION.

I/We do hereby offer to execute and complete the whole of the work within the time

specified all in accordance with the specification, designs, drawing and instruction in writing

referred to in the said document and with such materials as mentioned for, at the respective rates

which I/we have quoted in the Price Bid or at such other rates as may be fixed under the

provisions of these conditions.

In the event of this tender being accepted I/We agree to enter into an agreement and

when required, execute the contract, according to your form 1 of agreement as or in default

where of I/we bound myself/ourselves to forfeit the "Earnest Money Deposit."

I/We understand that if I/We shall not enter in agreement within fifteen days or as

decided by AMC from the date of receipt of letter of acceptance, you will forfeit the earnest

money paid by me/us and take necessary action as deemed fit.

I/We have enclosed a Demand Draft / Bank Guarantee as an “Earnest Money Deposit",

for the sum as mentioned in NIT, the full value of which is to be absolutely forfeited to the

Employer If I/We fail to commence the work specified. Otherwise the Employer shall retain the

said sum, as on account of such Security Deposit as provided for in the aforesaid documents.

I/We agree not to employ sub-contractors other than those that may be approved in

accordance with conditions in the aforesaid documents.

I/We understand that Municipal Commissioner is not bound to accept the lowest or any

tender, which are received. I / We also understand & agree that Municipal Commissioner

Reserves the right to allot number of tenders to successful bidders at his sole discretion in case if

I / We am/are lowest in more than one tender.

I/We am/are bound to execute the job if the work order is issued within 120 days from

the date of opening of the tender.

I am bound to execute the work by maintaining all Quality aspects/parameters mentioned

in the tender terms and conditions. I am also bound to submit all supporting Genuine Original

documents as and when asked and if any discrepancy found in such documents as well as in the

executed Work with respect to Quality/Quantity at any stage of work or even after completion of

work, it will be solely my Responsibility. I am bound to prove originality of all documents

submitted by me and if any Documents found false/fake then Municipal Commissioner/AMC

has right to take any action/penalty/punishment against me.

I am also bound that if I/we, indulged into any malpractice and/or used any inferior

quality and/or the construction of road is found to be of an inferior quality under this contract

than in such case Municipal Commissioner/AMC has right to debar/ blacklist permanently.

I/We agree to pay the Government income-Tax, (excluding GST), Octroi duties, Royalty

on material (i.e. Aggregate, Sand etc.) And any other taxes prevailing and from time to time on

such items on which the same are leviable and the rates quoted by me/us are inclusive of the

Yours faithfully

Seal and Sign of Contractor

AHMEDABAD MUNICLPAL CORPORATION

MAHANAGAR SEVA SADAN

DRAINAGE PROJECT

AHMEDABAD MUNICIPAL CORPORATION

ENGINEERING DEPARTMENT

Name of Work :- Repairing work of breakdown of existing Trunk Main line

machineholes near different SPS locations in Central Zone & West zone of

AMC area. (ARC Tender)

Item Description QTY Per Amount

(GWSSB SOR 2022-23 Sec-1. C

Item.no.3 pg.43 )

Providing and casting in situ C.C. in

grade M-15 (approx. corresp. to prop.

1:2:4) (proportions as per mix design or

as per Table 9 of IS 456 2000 in masses

by weigh batching ) using granite,

quartzite trap metal of size 6 mm to

mm for RCC work, including

scaffolding centering, form work,

needle vibrated consolidation, curing

comp. up to 6 meter depth or height

(excluding cost of reinforcement and

neat finishing) with centering and

shuttering/deshuttering etc. comp. for

structure for other than water retaining.

(GWSSB SOR 2022-23 Sec-1.C Item

1. Footing (without form work) 50.00 4732.00 Cu.M

2. Footing for column or foundation

(with form work) 25.00 4906.00 Cu.M

2 C.C. M-25 Control concrete for water

retaining structures (GWSSB SOR

2022-23 Sec-1.C Item no.6 pg.44 )

Providing and cast in situ C.C. in grade

M-25 proportions of ingredients as per

mix design by weigh batching using

granite, quartzite trap metal of size

mm to 20 mm and or 6 mm to 12 mm

including scaffolding centering

formwork, needle vibrated

consolidation, curing and hydraulic

testing etc. complete (excluding cost of

reinforcement) with centering and

shuttering/ deshuttering etc. comp. up to

6 meter height /depth Av. G.L.for all

water retaining structures.

1. Bottom slab or floor slab with

2. Bottom slab or floor slab – without

shuttering 60.00 6705.00 Cu. M

3. Bottom dome / roof dome 5.00 8281.00 Cu. M

4. Slant slab/conical wall or conical

5. Beams /Ring beams/Ring girders 5.00 8347.00 Cu. M

6. up to 15 cm thick 5.00 8597.00 Cu. M

7. Above 15 cm and up to 20 cm 5.00 8262.00 Cu. M

8. Above 20 cm and up to 25 cm 5.00 8006.00 Cu. M

10. Columns 5.00 9195.00 Cu. M

3 Steel /Reinforcement bars

(GWSSB SOR 22-23 Sec-1.C Item

Supplying cutting, bending, binding and

placing in position steel as per plan and

design and as per ISS 2502 including

cost of steel and binding wire for

reservoirs/structures only including lift

up to 6 meter height or depth below

G.L. for all diameters.

9.4 Do – deformed (TMT) bars

confirming to relevant IS Fe – 500 15.00 77504.00 MT

grade for all diameters.

4 Filling available excavated earth

(excluding rock) in trenches, plinth,

sides of foundations etc. in layers not

exceeding 20 cm. in depth consolidation 1500.00 129.10 Cmt

each deposited layer by ramming and

5 Brickwork using common burnt clay

building bricks having crushing strength

not less than 35kg./Sq.Cm. in

foundation and plinth in Cement Mortar 200.00 4011.66 Cmt

1:5. (1-Cement:5- fine sand) (B)

Conventional (upto 10 ton)

6 Cement Plaster (GWSSB SOR 2022-

23 Sec-1.C Item no.12 pg.45 )

A) Cement plaster 20 mm thick in C.M.

1:2 using water proofing compound of

approved quality including finishing

B) – do – Without water proofing

7 Dewatering by pumping set

(GWSSB SOR 2022-23 Sec-E Item

Dewatering by pumping set of

Dewatering by pumping set of required

capacity including temporary platform

carting pumping at site and fixing the

same in position including all

accessories, and fuel and labour etc.

Pump set of Capacity

8 Hiring and operating the 20 KV 3 Phase

Electric Generator for operating

desilting machinery, and lighting and

other requirements with Arranging

diesel to run the D.G. Set Do As

Directed. 8 Hrs Shift. (No payment 600.00 2500.00 Shift

should be allowed for non working

condition of machinery)

(AMC Drainge SOR 2015-2016

Machinary Item No.3 - 12% GST )

9 Providing & Supplying JCB Machine

on rental basis in case of emergency

situation and break down type work &

also during unavoidable condition as

per instruction of engg.incharge , rate

includes all nece. shifting, fuel and

operating charges and stacking of useful

& non-useful materials separately up to

store. (No payment should be allowed

for non working condition of machinery

and for pipe line excavation and laying

10 Providing & Supplying Hitachi

Machine-110 capacity on rental basis

in case of emergency situation and

break down type ork & also during

unavoidable condition as per instruction

of engg.incharge, rate ncludes all

nece. shifting, fuel and operating

charges .(No payment should be

allowed for non working condition of

11 Providing & Supplying Hitachi

Machine-200 capacity on rental basis

in case of emergency situation and

break down type work & also during

unavoidable condition as per instruction 175.00 2700.00 Hrs

of engg.incharge , rate includes all nece.

shifting, fuel and operating charges .

(No payment should be allowed for non

working condition of machinery )

12 Hiring of Hydra / Crane with Driver

(8 working Hours in Day) (GWSSB

SOR 22-23 It.No.7 pg.no.105 Sec.2.E.

(i) Hiring of crane 65.00 6412.47 Day

(ii) Hiring of Hydra

13 Hiring of Tractor with trolley

considering 8 hrs. as working day hours

incl. Driver 150.00 2104.09 Day

(GWSSB SOR 22-23 It.No.7

pg.no.105 sec.2.E. mis)

14 Hiring of Three wheeler carrier

(Chakado Rickshaw) considering

hrs. as working day hours incl. Driver 100.00 1153.24 Day

(GWSSB SOR 22-23 It.No.7

pg.no.105 sec.2.E.mis)

15 Supplying Electric Breaker Machine for

RCC Slab or Asphalt Demolishing

Work on site by using Operator, fuel,

power Supply etc. Complete as

Directed. (No payment should be

allowed for non working condition of 150.00 1071.42 shift

machinery and for pipe line excavation

and M.H. work. Allowed only for break

down work) (AMC Drainage SOR 15-

16 It.No.9 pg.no.7 - 12% GST)

16 Supplying Pneumatic Breaker Machine

for RCC Slab or Asphalt Demolishing

Work on site by using Operator, fuel,

power Supply etc. Complete as

Directed. (No payment should be

allowed for non working condition of

machinery and for pipe line excavation

and M.H. work. Allowed only for

break down work) (Based on

Previously approved rate by C E sir )

(AMC Drainage SOR 15-16 It.No.10

pg.no.7 - 12% GST)

17 Providing And Jointing Stoneware

Pipes Incl. Excavation Up to 2 Mt.

Refilling, Transporting Pipes To Work

Unloading, Lowering In Trench,

jointing material Such As Cement, sand,

Hemp Bitumen As Directed, Incl.

Watering The Trenches Spreading And

Carting away Of Surplus material as

directed by engineer in charge. (Based

on R&B SOR 2023-24)

18 Providing & supplying ISI standard

RCC pipes (of sulphate resisting

cement) in standard length of following

class with socket and spigot joints as

per IS 458-2003 Including EPDM

Rubber ring as per IS 5382-1985

etc.comp. As Directed by engineering

incharge.(Vertically Cast) Class NP4

(GWSSB SOR 22-23 It.No.10.2.B

19 Making connection to the ex.M.H.in

running sewer incl. Dewatering and

other required machinery etc. of

following dia pipes at any convenient

time. All damaged work shall be well

repaired as per instructions.

etc..complete. (Based on Drainage SOR

2015-16 It.no.19 pg.no.4 - 12% GST)

20 RCC precast M.H. Frame & Cover

(GWSSB SOR 22-23 It.No.10.4A

RCC precast M.H. Frame & Cover

Manufacture, supply & Delivery at

store or at site of work precast RCC

M.200 Frame & cover suitable to

drainage M.H. and as per type design &

Drawing including cost of

reinforcement M.S. Angles or Flat,

curing mold work etc.

(i) Frame suitable for 50cm opening of

(ii) Cover suitable for 50cm opening of

21 Supplying, labour for break down

repairing work for activities like

excavation, disliting, removing debris

from trench back filling etc. comp. as

directed by Eng.in charge.

(Ahmedabadcity SOR 2023-24-page

a Labour charges - Mazdoor (Male) 2200.00 493.00 No.

b Labour charges - Supervision for

22 Barricading the entire break down or

excavated area on rental basis using

wooden ballies / M.S.angles at max.

2.00 meter centre to centre, C.G.I.

Sheet, reflective paint / Board out side

to avoid accident & for smooth traffic

diversion & movement including

cautionary board etc. Item also includes

for making temporary sufficient nos of

lighting arrangement through out the

work with necessary required

arrangement. ..The same shall be

removed after completion of work.

(Only for break down work from start to

complete) (AMC Water ARC SOR 15-

16 It.No.35 pg.no.6 - 12% GST)

23 Hire charges of high power metal

detector machine to finding out buried

manholes MH seat cove of SWD

/Drainage line with raising of finding

out MH.rate also included

protection,asphalt cutting,loosing old 5.00 12000.00 No.

manhole seat cover ,brick

masonary,plaster and fixing of MH seat

cover in c.c. and carting debries curing

comp.as per dire. of incharge of work.

24 Conveyance charge of lime , murrum,

building rubbish, earth manure or

sludge, and excavated earth and fly ash 2202.87 235.51 L.S.

upto lead of 5.00 Kms.(R&B SOR

25 Providing Dummy or Plug the

Running Sewer by using M.S. Plate

, safety measures,Labour,mud

pump,D.G. set & Transportation of

the same machinary also inclues

removing of dummy when required and

placed labour & Supervisor remain

present till the work comp.etc. as

a 600 mm dia To 1200 mm dia 15.00 60000.00 No

b Above 1200 mm dia 12.00 90000.00 No

26 Hiring and operating the 60 KV 3 Phase

Electric Generator for operating

desilting machinery, and lighting and

other requirements with Arranging

diesel to run the D.G. Set Do As 100.00 8400 Shift

Directed. 8 Hrs Shift. (No payment

should be allowed for non working

condition of machinery ) ( Based on

Previously approved rate by C E sir )

27 Renovation of manhole

(GWSSB SOR 22-23 Sec-2 D It.no.10

Renovation of manhole by increasing

the height at top including cost of

excavation, refitting of C. I. manhole

frame and cover curing etc. complete

incl. all carting and providing of

materials which is required for the

purpose (except manhole frame and

cover) For all type manhole by

providing RCC 1:2:4 Partition walls

with required reinforcement 25 cm thick

and circular opening with 500mm clear

dia and 0.40 mt. av. ht.

28 Constructing Slab type M.H. Chamber

of the following size including

excavation, refilling, brick bats cement

concrete (1:5:10) of thickness 15 C.M.,

CC Channel (1:2:4) of thickness

C.M., finished 15 mm thick cement

plaster inside & outside (Only for shaft)

in CM 1:3, finishing with cement slurry,

P/F 4 mm dia M.S.Steel HDPE coated

steps 35 cm c/c at 35 cm staggered in

masonary CM 1:5, RCC Slab in CC

1:1.5:3 of thickness 23 C.M., including

Cantering & reinforcement (double jalli

at 15 C.M. c/c bothway 12 mm dia.) but

excluding the cost of Manhole seat

cover etc..completed. of Size 1.00 X

1.40 meter (Inside Clear, M.H. length

should be parallel to the flow, for pipe

dia <= 800 mm) (Based on Drainage

a 1.00 to 2.00 meter depth, (Slab at

Ground level) 5.00 10177.68 Nos.

b 2 to 3 meter depth, (Slab at below

mt. From G.L.) 5.00 19258.04 Nos.

c 3.00 to 4.00 meter depth, (Slab at below

d 5.00 to 6.00 meter depth, (Slab at

below 1.00 mt. From G.L.) 5.00 44050.00 Nos.

e 7.00 to 8.00 meter depth, (Slab at below

29 Providing and constructing Sewer

machine holus, scraper machine hole s

and unit house connection chamber, as

per the type design in brick masonry in

C M 1 5 and inside and outside 20mm

thick plastering in C. M 1.3 necessary

100 mm coping with reinforcement in

RCCM 200 fixing C I steps and fixing

machine hole frame and covers (But

excluding supply of machine hole

frame and covers) over machine hole s

and house connection chambers and

fixing machine hole covers (but

excluding supplying of machine hole

covers) over scraper machine hole etc

complete, providing and fixing safety

chain wherever necessary as per the

stipulations in the type design complete

as per latest CPHEEO manual (excl.

excavation) (GWSSB SOR 2022-23

Item no-2, PG no-101)

A Scraper Machinehole type "S1"

rectangular type for 600 mm dia to

1200 mm dia sewer linepipes and for

depth 2.5m to 9.0m

A.1 Scraper machine hole type "S1" as

above but upto 2.5m 5.00 52319.00 No.

A.2 Extra depth beyond 2.5 m and upto

m depth for type "SI" scraper machine 5.00 31907.00 Rmt.

B Scraper Machinehole type "S2"

rectangular type for 1400 mm dia sewer

line pipes and for depth 2.5m to 9.0m

B.1 Scraper machine hole type "S2" as

above but upto 2.5m 5.00 48103.00 No.

B.2 Extra depth beyond 2.5 m and upto

m depth for type "SII" scraper machine 5.00 20370.00 Rmt.

30 Providing, laying, spreading and

compacting graded stone aggregate to

wet mix macadam specification

including premixing the Material with

water at OMC in mechanical mix plant

carriage of mixed Material by tipper to

site, laying in uniform layers in subbase

/ base course on well prepared surface

and compacting with vibratory roller to

achieve the desired density as per

MoRTH clause 406. (Road SOR 2021-

31 Providing F.R.C. MH seat cover incl.

carting to the work site etc. comp.

F.R.C. Extra Heavy Duty (EHD-35)

Manhole Covers &

Frames Cover : 728mm ø & 100 mm

thick circular cover, 35.00 MT load

design, 100x2mm MS flat allround,

16mm ø plain round bar for lifting the

cover & should be fitted with plastic

cups. Frame : 560 mm ø clear opening,

outer size- 888x888x175 mm. On the 25.00 1375.00 Set

upper periphery of frame 25 x 3 mm

wide MS flat should be well embed in

concrete to protect the edges of frame.

FRC E.H.D.-35 manhole cover & frame

described as above.Drainage SOR

2009-10) SOR - (Jan. 2016) Rates for

work of Drainage pipe line) - 12% GST

32 Excavation in bituminous road as per

required gradient and line including

safety provisions using site rails and

stacking excavated stuff including up to

all required lead cleaning the site etc.

complete for all lifts as

specified.(GWSSB SOR 2022-23 Item

33 Fabricating, supply and erecting in

position Standard Structural steel

sections conforming to IS 2062 for

railing , skywalk, stair, or other works

using ISMB, ISA, ISMC, MS plate, flat,

square bars, pipe, square

pipe,rectangular sections, square

section, tube, etc. including welding,

cutting, wastage, etc. complete. The rate

is inclusive of welding rod, supply &

fixing of correct size nut, bolts,

washers, including one primer coat of

red lead paint conforming IS:102 Zinc 3520.00 126.68 Kg

chromate paint conforming to IS:104

followed by two coat of aluminium

paint as per IS:2339 OR enamel paint of

color as selected by engineer incharge,

with all contractor's materials, labour,

tools & plants, in bolted/ welded

construction as directed by Engineer-in

Charge. The waste cut pieces shall not

be included in the paying quantity. The

work shall be done as per drawing and

specification. The work shall be carried

out as per IS:800, IS:816.(RA)

34 Providing and fixing 1.20 Metre high

fencing with 2.0 Metre long M.S.Angle

posts 40 mm x 40 mm x 6 mm and oil

painting 3coats fixed at 2.5 Mt, C/c.with

five Horizontan lines and two

diagonals of galvanised steel bar bed

wire weighting 9.38 Kg.per100 Metre,

strained and fixed to posts with G.I,

staples including fixing the post sing

round with 0.5M x 0.5.M x 0.5 M.

block in C.C 1:5:10 etc complete.

(Ahmedabadcity SOR 2023-24, Item

code no-22001, Item no-22.2 Page no-

(in words also)

CONTRACTOR'S SIGNATURE ADDL.CITY ENGINEER

& STAMP (Drainage project)

INSTRUCTIONS TO BIDDERS

1. Scope of Bid

1.1 Competent authority on behalf of The Municipal Commissioner, Ahmedabad Municipal

Corporation (referred to as Employer in these documents) invites sealed bids for the

construction of works (as defined in these documents and referred to as “the work”)

detailed in the table given in the Invitation for Bid (hereinafter called as IFB.) from

competent bidder. The bidders may submit bids for the works detailed in the table given

2.0 Source of Funds

Ahmedabad Municipal Corporation has arranged the fund for this project.

3.0 Eligible Bidders

3.1 The Invitation for Bids is open to all eligible bidders meeting the eligibility criteria as

defined in this tender.

3.2 All bidders shall provide Qualification Information and Forms of Bid mentioned in the

Clause-14. An agency that has been engaged by the Employer to provide consulting

services for the preparation or supervision of the works, and any of its affiliates, shall not

be eligible to bid.

3.3 Any entity which has been declared as non-performing by NHAI / GoG / AMC or the

firms those are blacklisted/ debarred for specified period by AMC, Governement of

Gujarat, Government of India or any other entity controlled by it, would not be eligible

to submit the Bid.

4.0 Qualification of the Bidder

4.1 Requires registration:- Register as per Notice Inviting Tender having in Road Works

in PWD in Govt. R&B / CPWD / AMC or equivalent register with any other state Govt.

or institutions.

5.0 DISQUALIFICATION

Even though the bidders meet the above mentioned qualifying criteria, they are subject to

be disqualified if they have,

• Made misleading or false representations in the forms, statements, affidavits and

attachments submitted in proof of the qualification requirements; and/or

• Record of poor performance such as abandoning the works, not properly completing

the contract, inordinate delays in completion, litigation history, or financial failures

etc. or debarring from AMC work etc.

• Tampered the bid document in any manner.

• Colluded with other prospective bidders for this work to arrive at quoted prices for the

purpose of restricting competition.

• Indulged in inducement of any official of AMC and/or their consulting engineer and

other advisors in any manner whatsoever.

• Proposal not submitted in accordance with this tender.

• During validity of the proposal, or its extended period, if any, the bidder changes his

commercial terms.

• The bidder qualifies the proposal with his own conditions.

• Proposal is received after due date and time.

• Commercial proposal is enclosed with the same envelope as technical proposal

• The envelope does not show on the outside the reference of bid and thus gets

opened before the due date of opening.

• The E.M.D. is not deposited in full and in the manner as specified in the clause of

Earnest Money Deposit.

• The tender is in a language other than English or dose not contains its English

Translation in case of other language adopted for tender preparation.

• The tender documents received are not duly signed by authorized person.

• The validity of tender is less than what is stated in the tender.

• Any of the page or pages of tender is/are removed or replaced.

• Any condition which affect the cost.

• If it is joint venture.

5.1 Debarment / Black listing

Notwithstanding the above, the Employer may debar or blacklist any of the bidder(s) for

their misleading or false representations in the forms statements etc. for the period to be

decided by the Employer.

6.0 Cost of Bidding

The bidder shall bear all costs associated with the preparation and submission of his Bid.

Employer will in no case be responsible and liable for those costs.

The Bidder, at his own cost, responsibility and risk, is encouraged to visit, examine and

familiarize himself with the site of Works and its surroundings including source of earth,

water, road aggregates etc. and obtain all information that may be necessary for

preparing the Bid and entering into a contract for construction of the Works. The costs of

visiting the Site shall be at the Bidder's own expense.

8.0 Bidders shall not have any dispute or claim for any kind of compensation in case of,

• If the quantity stipulated in the tender items varies or the scope of work changes and

thereby total amount of work increases / decreases up to any extent.

thereby total amount of work increases / decreases up to any extent.

• If the works gets delayed / postponed for some administrative / technical decision

• If the items stipulated in the tender shall not be executed as per site condition/

requirements. No claim shall be entertained for the same.

• No idle charges shall be paid to contractor for machinery and man power if remain

idle and no claim shall be entertained for the same.

B. BIDDING DOCUMENTS

9.0 Content of Bidding Documents

9.1 The set of bidding documents comprises the documents listed below and addendum (if

1. Notice inviting e-Tender

2. Special conditions of Contract

3. Instructions to Bidders

4. Qualification Information

5. Conditions of Contract

6. Technical Specifications

7. Forms of Bid

8. Bill of Quantities

• The bidder is expected to examine carefully all instructions, conditions of contract,

contract data, forms, terms, technical specifications, forms, Annexes in the bid

document. Failure to comply with the requirements of bid documents shall be at the

bidder’s own risk. Bids which are not substantially responsive to the requirements of the

bid documents shall be rejected.

10.0 Amendment of Bidding Documents

10.1 Before the deadline for submission of bids, the Employer may modify the bidding

documents by issuing addendum.

10.2 Any addendum thus issued shall be part of the bidding documents and shall be placed on

website www.nprocure.com The prospective bidder shall refer to website to check any

addendum before 24 hours of opening of bids. AMC will not give any advertisement for

10.3 To give prospective bidders reasonable time in which to take an addendum into account

in preparing their bids, the Employer may, at his desecration, extend as necessary the

deadline for submission of bids.

10.4 Prospective bidders should attach the addendum made for the work & if fails to do so

than also the changes made through such addendum shall be applicable & bound to the

C PREPARATION OF BIDS

11.0 Language of the Bid

All documents relating to the bid shall be in the English language only.

12.0 Documents comprising bid

The e bid submitted by the bidder shall be in single bid.

To qualify for award of the contract, each bidder must submit the following documents

along with bid:

• Required Registration Certificate

• Other requested documents

• Any other material / information required to be submitted in accordance with

these Instructions to Bidders (ITB)

Failure to submit these certificates/documents shall make the bid non-responsive.

Above original documents in physical form in two copies, one marked as “original” and

other marked as “Duplicate”, shall be submitted in a sealed envelope by 16:00 Hrs on the

date of physical submission of bid and addressed to the addressee given in the NIT duly

super scribed “Name of Work, Bid due date and time, Name and address of the bidder”

13.0 Bid Prices

• The contract shall be for the whole works as described in Bill of Quantity based on the

percentage rate in the Bill of Quantities submitted by the bidder..

• All duties, taxes, (except GST) and other levies payable by the contractor under the

contract, or for any other cause shall be included in the rates, prices and total Bid Price

submitted by the Bidder, except otherwise stated in the Bid document. Employer will

not compensate the bidder (contractor) for any change in duties, taxes and other levies

payable by the contractor under the contract and any other reasons.

• The percentage rate and bid price quoted by the bidder shall be fixed up to the

completion of Work and shall not be subject to adjustment on any account, except where

expressly specified, otherwise, in the contract.

14.0 Currencies of Bid and Payment

The currency of bid and payment shall be in Indian Rupees. All payments shall be made

in Indian Rupees.

15.0 Bid Validity

15.1 Bids shall remain valid for 120 days from last date of submission of tender. A bid valid

for a shorter period shall be rejected by the Employer as non-responsive.

15.2 In exceptional circumstances, prior to expiry of the bid validity (120 days), the Employer

may request that the bidders may extend the period of validity for a specified additional

period. The request and the bidders' responses shall be made in writing or by cable. A

bidder may refuse the request without forfeiting his bid security. A bidder agreeing to the

request will not be required or permitted to modify his bid, but will be required to extend

the validity of his bid security for a period of the extension.

16.0 Earnest Money / Bid Security

16.1 The Bidder shall furnish, a Bid Security of the amount as shown in the Table of IFB as

part of his bid, in the form of Demand Draft / pay order / Bank Guarantee in favour of

Municipal Commissioner, Ahmedabad valid for 120 days.

16.2 The issuing branch of the bank guarantee shall be of Ahmedabad City only.

16.3 Any bid not accompanied by an acceptable Bid Security shall be rejected by the

Employer as non-responsive.

16.4 Any bid having bid security for lesser value and shorter validity period shall be treated as

non-responsive.

16.5 (a) The bid security of the unsuccessful bidders, except for L1, L2 and L3 bidders will be

returned as promptly as possible.

(b) The bid security of the successful bidder, along with second and third lowest tenders,

will be returned when the successful bidder has furnished the required security deposit

and signed the agreement.

16.6 The Bid Security of the Successful Bidder will be discharged when the bidder has signed

the Agreement and furnished the required security deposit.

16.7 The Bid Security shall be forfeited,

a) if the Bidder withdraws the Bid after Bid opening during the period of Bid validity;

b) in the case of a successful Bidder, if the Bidder fails within the specified time limit to

(i) sign the Agreement; or

(ii) Furnish the required security deposit.

(iii)commence the work after signing the agreement within 15 days

16.8 No interest shall be paid by the owner on any tender guarantee. The issuing branch of the

bank guarantee shall be of Ahmedabad City only.

16.9 Bank Guarantee for Earnest Money Deposit should be executed on non-judicial Stamp

papers of requisite value in accordance with the stamp Act applicable to that particular

state of Indian Union, where executed.

16.10 The executing officers of the bank Guarantee for Earnest Money Bid Security shall

clearly indicate in (block letters) his name, designation, Power of Attorney No. / Signing

16.11 Each page of the bank guarantee for Earnest Money Deposit shall be duly

signed/initialed by the executing officers and the last page shall be signed in full,

indicating the particulars as aforesaid under the seal of the Bank.

D. SUBMISSION OF BIDS

17.0 Sealing and Marking of Bids

17.1 The bidder shall submit the Technical Bid only. The Bid shall be sealed in separate

envelopes and the three sealed envelopes shall be sealed in an outer envelope. The Bid

envelopes shall be marked as follows:-

• Complete Tender Document with all necessary qualification related documents (in two

Above two envelopes shall be kept in one envelope and it should be marked as

“Technical Bid” and sealed. This Outer envelope should mention the name of firm of

bidder, his address, contact details & name of the work.

17.2 The inner and outer envelopes

a) Shall be addressed to the Employer at the following address:

Assistant Manager.- PWA,

2nd Floor, B – Wing, Sardar Patel Bhavan,

Danapith, Ahmedabad-380001.

c) Bear the following identification:

Indicate the name and address of the bidder.

• If the outer envelope is not sealed and marked as above, the Employer will assume no

responsibility for the misplacement or premature opening of the bid.

18.0 DEADLINE FOR SUBMISSION OF THE BID

18.1 Complete Bids (including Technical bid and necessary documents) must be received by

the Employer at the address specified in bid information not later than the date indicated

on the face sheet of the document. In the event of the specified date for the submission of

bids declared a holiday for the Employer, the Bids will be received up to the appointed

time on the next working day. The Bidder is further required to submit Documents in

Physical Form on or before the Bid Due Date and before the time of submission as

specified in NIT, at the following address:

Assistant Manager- PWA,

2nd Floor, B – Wing, Sardar Patel Bhavan,

Danapith, Ahmedabad-380001.

18.2 AMC assumes no responsibility for inability of a bidder to submit bids through (n)

procure e-tendering portal on account of delay in submission at bidder's end. Bidder shall

ensure that they submit the bid well before the "Due Date & Time of Bid- Submission".

AMC shall not be responsible if bidder is not able to submit the bid on account of failure

in network/internet connection or any other technical reason.

18.3 The Employer may extend the deadline for submission of bids by issuing an amendment

in accordance with respective Clause, in which case all rights and obligations of the

Employer and the bidders previously subject to the original deadline will then be subject

to the new deadline.

18.4 All bidders are requested to see the website of (n) procure for amendment / corrigendum

18.5 Any Bid received by the Employer after the deadline prescribed in NIT will be rejected

and returned unopened to the bidder.

Any Bid received by the Employer after the deadline prescribed in NIT will be returned

unopened to the bidder.

20.0 NOTIFICATION OF AWARD & SIGNING OF AGREEMENT

The Bidder whose Bid has been accepted will be notified of the award by the Employer

prior to expiration of the Bid validity period by writing, facsimile or e-mail confirmed by

registered letter. This letter (hereinafter and in the Conditions of Contract called the

“Letter of Acceptance” will state the sum that the Employer will pay the Contractor in

consideration of the execution, completion, and maintenance of the Works by the

Contractor as prescribed by the Contract (hereinafter and in the Contract called the

“Contract Price”).

The notification of award will constitute the formation of the Contract, subject only to

the furnishing of a Security Deposit in accordance with the provisions of Clause.

The agreement will incorporate all correspondences between the Employer and the

Successful Bidder. It will be signed by the Employer and the Successful Bidder.

21.0 SIGNING OF CONTRACT AGREEMENT

21.1 The Employer and the successful bidder shall enter into a Contract Agreement within

days after the successful bidder (hereinafter called the Contractor) receives the Letter of

Acceptance, unless they agree otherwise, subject to furnishing the security deposit before

signing the Agreement with the Employer.

21.2 Upon issue of ‘Letter of Acceptance’ to the successful Bidder, the Employer will

promptly notify the other Bidders that their Bids have been unsuccessful and release their

Earnest Money Deposit / Bid Security.

22.0 SECURITY DEPOSIT

22.1 Security Deposit shall be at 5 % of the contract value in the form of bank Guarantee

/DD (Bank Guarantee issued from Ahmedabad Branch only as per para A.4.24). The

security deposit shall be payable in 15 days from date of receipt of LOI failing which interest will

be charged by AMC.

22.2 The security deposit shall be in the form of a Bank Guarantee in the name of the

Employer, from Ahmedabad branch of any Banks mentioned in the clause no. 16.2 of

these tender documents.

22.3 This security deposit shall be released only after the clearance of final bill including pre

22.3 Interest shall be deducted from contractor in case of late submission of security deposit

or late renewal of bank guarantee for the number of days delayed for submission or

discontinuity of the bank guarantee.

22.4 Bank Guarantee to be submitted in the prescribed format enclosed and shall be same

verbatim as per the format. Bank Guarantee shall be submitted on right value of stamp

paper and for correct value of contract.

22.5 Failure of the Successful Bidder to comply with the requirements of Sub-Clause

shall constitute sufficient grounds for cancellation of the award and forfeiture of the Bid

22.6 In case of any contract amendment during execution of the contract enhancing value of

the contract the BG value shall be enhanced accordingly. Validity of BG shall be

commercial terms and conditions of the tender.

22.7 All compensation or other sums of money payable by the Contractor to the Employer

under the terms of this Contract or any other contract or on any other account whatsoever

may be deducted from Security Deposit. Also in the event of the Contractor's Security

Deposit being reduced by reasons of such deductions, as aforesaid, the Contractor shall,

within 14 days of receipt of notice of demand from the Engineer-in-Charge, make good

the deficit in Security Deposit.

22.8 Should there arise any occasion under the Contract due to which the periods of validities

of Bank Guarantees as may have been furnished by the Contractor from time to time, are

required to be extended/renewed, the Contractor shall get the validity periods of such

guarantees extended/renewed, and furnish these to the Engineer-in- Charge one month

before the expiry date of the aforesaid Guarantees originally furnished failing which the

existing Bank Guarantees shall be invoked by the Engineer – in – charge. Also in case of

any deficit in securities on any account as might occur or is noticed, the Contractor shall

forthwith recoup/replace the same with acceptable Security Deposit.

22.9 The Bank Guarantee shall be extended within the expiry dates wherever activities as per

contract are not completed in all respects.

22.10 The Security Deposit less any amount due shall, on demand, be returned to the contractor

after 45 days of completion date / Final Bill paid date which ever is later. No interest on

the amount of Security Deposit shall be paid to the Contractor at the time of release of

Security Deposit as stated above.

22.11 The successful bidder to whom ‘LOI’ has been issued shall enter into an agreement at

Employer’s office within 15 days of.

23.0 Advance Payment and Security

The Employer will not provide any advance payment.

24.0 Dispute Review Expert

In case of all the disputes, decision of the Municipal Commissioner, Ahmedabad shall be

final and binding to the bidder.

25.0 LITIGATION HISTORY

The applicant should provide accurate information on litigation and/or arbitration

resulting from Contractors completed or under execution by him over last five years. If

the details of Litigation History are hidden by the Bidder and later on it comes to the

knowledge of the Employer, the Bidder shall be disqualified for the proposed work and

other appropriate actions shall be taken against the bidder.

DETAILS OF COMPLETED / ONGOING LITIGATION / ARBITRATION

Employer Value of the Reasons/Details for Remarks

Year Name of Project (Rs.) litigation/arbitration showing

Project Present Status

 The bidder shall furnish separate table for individual project.

 The above information shall be supported with necessary documents otherwise the same

shall be treat as null and void.

 A consistent history of arbitration awards? Judgments against the applicants or any

partner of a joint venture may result in disqualification for proposed work.

 If the details of litigation History is hidden by the applicant and later on it comes to

knowledge of the employer the bidder shall be disqualified for the proposed work and

other appropriate actions shall be taken against the bidder.

Seal and Signature of the Bidder Additional City Engineer

Date: Ahmedabad Municipal Corporation

GENERAL CONDITIONS OF CONTRACT

1.0 Liquidated Damages

1.1 If the Contractor fails to complete the works within the original or extended time limit,

the Contractor shall pay penalty of 10% of amount of actual remaining work. The

amount of work for which the scope of contractor is reduced shall not be considered for

the calculation of Liquidated Damages.

1.2 Conditions mentioned in the AMC Finance Department Circular AMC no. 18 Date:

23/05/2017 and all latest Circulars shall be applicable.

2.0 Retention Money

2 % amount of each Running Bill shall be deducted as a Retention Money. Such

retention money shall be released in the final bill of the said work. AMC reserves right to

deduct any amount to compensate the poor performance of the contractor i.e. poor

quality or abandoned / incomplete work.

3.0 Subcontracting

3.1 Except where expressly specified in the Contract, the Contractor shall not subcontract

any portion of Work without the approval of the Employer’s Representative. Any

subcontracting shall not relieve the Contractor from any contractual obligations or

responsibility under the Contract.

3.2 The Contractor shall not be required to obtain consent for a subcontract for which the

name of the subcontractor and scope of works activities to be performed by him is

already stated in the contract or supply of material or engagement of labour.

4.1 The Contractor shall employ the key personnel named in the Schedule of Key Personnel

as referred to in the Bid document to carry out the functions stated in the Schedule or

other personnel approved by the Engineer. The Engineer will approve any proposed

replacement of key personnel only if their qualifications, abilities, and relevant

experience are substantially equal to or better than those of the personnel listed in the

4.2 If the Engineer asks the Contractor to remove a person, without assigning reasons thereof,

for his misconduct or inadequacy of technical skills and experience, who is a member of

the Contractor’s staff or his work force, the Contractor shall ensure that the person leaves

the Site within seven days and has no further connection with the work in the Contract.

4.3 No residential accommodation is allowed at the site of work. The labour huts shall not be

erected on the site of work and contractor shall make his own arrangements to provide

such accommodations as per the rules of the local bodies. He shall make his own

arrangements for housing, stores, field office etc. He shall submit a site layout plan

indicating the location of various site facilities to be created by him at his cost for the

execution of work. The Owner shall in no way be responsible for any delay on this

account and no claim on this account whatsoever shall be entertained. All Basic

amenities shall be provided by the Contractor to Labours as per the prevailing labour

5.1 The Contractor shall have full regard throughout execution, completion and defects

liability period to following safety aspects and shall take all necessary steps to ensure

that danger to safety is avoided all the time in respect of,

Safety of the works

• Safety of the Contractor’s employees and all the persons directly or indirectly

engaged by him for the works

• Safety of all the employees including persons working on other contracts of

Employer at the same site of the Employer and Engineers employees engaged at

• Any authorized third party persons on the site.

• Contractor’s plant and equipment

5.2 The Contractor shall provide and maintain at his costs all lights, guards, fencing, warning

signs, barricading, and cones; when and where necessary, or required by Engineer in

Charge or by any duly constituted authority for the protection of the works or for the

safety and convenience of the public or other.

5.3 The Contractor shall take all reasonable steps to protect the environment on and off the

site and avoid damage or nuisance to persons or property of the public and others arising

as a consequence of his method of operation.

5.4 The Contractor shall maintain in good condition all work throughout execution,

completion, and defects liability period. The contractor shall be responsible for and to

make good all injuries, damages and repairs, rendered necessary by fire, rain, traffic,

floods or other causes.

5.5 All the scaffolding work, wherever required for the execution of work, shall be provided

by the contractor. Nothing extra shall be payable on this account. It shall be provided

strictly with double scaffolding system with all the accessories etc. with adjustable

suitable working platforms to access the areas, with ease for working and inspection. It

shall be designed to take all incidental loads. It should cater to the safety features for

workmen. It shall be ensured that no damage is caused to any structure due to

5.6 All temporary warning/ caution boards display shall be provided and displayed during

day as well as night time by the contractor, wherever required and as directed by the

5.7 Arrangement of temporary water and electricity and telephone connection required, by

him, shall be made by the Contractor at his own cost and also necessary permissions

directly from relevant Owners shall be obtained by him under intimation to the Owner.

Also all initial and running charges and security deposit, if any in this regard shall be

borne by him. The Contractor shall abide by all the rules/ bye laws applicable in this

regard and he shall be solely responsible for any penalty on account of violation of any

of the rules and byelaws in this regard.

5.8 In any case if any fatal accident (major or minor) occurs due to poor safety precautions,

the same shall be completely contractor’s responsibility. All the losses due to such

accidents and expenses of legal matters shall be borne by contractor.

5.9 The Contractor shall be responsible for maintenance and watch and ward of the complete

installation and shall also be responsible for any pilferage, theft, damage, penalty etc. in

this regard. The Contractor shall indemnify the Owner against any claim arising out of

pilferage / theft, damage, penalty etc. whatsoever on this account.

5.10 The Contractor shall depute Site Engineer & skilled workers as required for the work.

Necessary protective and safety equipments shall be provided to them by the Contractor

at his own cost and used at site.

6.0 Contractor to keep site clean:

During the execution of the work, the Contractor shall keep the site clean. All wreckage

rubbish, excess materials, temporary works no longer required will be removed from site

7.0 Clearance of site on completion:

The Contractor shall clear away and remove all Contractors equipment, surplus

materials, rubbish, temporary works of every kind.

A. COST CONTROL

8.0 Bill of Quantities

a. The schedule-B shall contain Memorandum showing items for the construction,

installation, testing, and commissioning work to be done by the Contractor.

b. The quantities stated in the schedule B are estimated quantities. The Contractor shall

be paid only quantities calculated after taking measurements of executed work. The

rate stated in the schedule B for each item of work shall apply. The works shall be

measured by the Contractor jointly with the authorized representative of the Engineer

and all particulars required by the representative of the Engineer shall be supplied by

the contractor.

c. The work shall be measured net. No allowance for general or local custom, working

space etc. is to be made.

9.1 The Engineer in Charge shall have power to make any variation of form, quality or

quantity of the works or any part thereof that may, in his opinion, be necessary and for

that purpose, or if for any other reason it shall, in his opinion, be appropriate, he shall

have the authority to instruct the Contractor to do and the Contractor shall do any of the

 Increase or decrease the quantity of any work up to any extent included in the

 Omit any such work,

 Change the character or quality or kind of any such work,

 Execute additional work of any kind necessary for the completion of the Works or

 Change any specified sequence or timing of construction of any part of work.

9.2 No such variation shall in any way vitiate or invalidate the contract, but the effects, if

any, of all such variations shall be valued in accordance with the following sub clauses.

Provided that where the issue of an instruction to vary the Works is necessitated by some

default or breach of contract by contractor or for which he is responsible, any additional

cost attributable to such default shall be borne by the Contractor.

9.3 The Contractor shall not make any such variation without an instruction of the Engineer.

No instruction is required for quantities varying from those provided for the items in the

contract schedule B.

10.1 The basis for the valuation of variations for addition to the Contract Price shall be as

follows in the same order of priority.

a) Variations in the quantities of work in schedule of quantities shall not vitiate the

b) The contractor shall be bound to execute extra items of work as directed by the

Engineer-in-charge.

c) Contract unit rates for individual items shall apply to varied quantities where there is

a quantity variation.

d) The price variations on extra item will not be given.

e) In case of other non tender items following procedure shall apply.

10.2 If any extra item crops up during the progress of work the same shall be carried out by

the Contractor and he shall be paid at the rate fixed by Employer which shall be fixed as

lowest of the rates derived by rate analysis based on the following three methods. , the

priority of the documents forming the Contract shall be as follows:

(i) If the extra item is included in the S.O.R. of Road & Building Department, Year

2013-14, the rate of extra item shall be that rate and premium (above or below)

quoted by contractor.

(ii) Rate analysis based on prevailing Govt. of Gujarat’s SOR rates.

(iii) Rate analysis based on current market rates. This shall be based on

 The material costs, the labour costs, the cost of use of all plant, machinery and

equipment, the cost of all temporary and incidental works, the overheads and the

Contractors profit.

 The overheads shall be taken at 5 % of the sum of material costs, the labour costs,

the cost of use of all plant, machinery, and equipment, the cost of all temporary

and incidental works.

10.3 In case of the rate is to be derived from prevailing market rate, the Contractors profit

shall be taken at 10 % of the final rate derived.

10.4 In the event of disagreement, the Engineer in Charge shall fix such rates and prices as

are, in his opinion appropriate and shall notify the Contractor accordingly with a copy to

10.5 The Engineer shall determine provisional rates and prices to enable on account payments

to be included in the Interim Payment Certificates, until rates and prices are agreed as

final by the Employer, the Contractor, and the Engineer.

10.6 The Contractor shall not be entitled to additional payment for costs, which could have

been avoided by giving early warning.

11.1 Payments shall be adjusted for deductions for advance payments, retention, other

recoveries in terms of the contract and taxes at source, as applicable under the law. The

Employer shall pay the Contractor the amounts certified by the Engineer.

11.2 If an amount certified is increased in a later date certificate due to corrections in previous

certificates or as a result of an award from disputes review experts, Contractor shall be

paid such amount only. The Contractor shall not be paid any interest upon such delayed

11.3 Items of the work for which no rate or price has been entered in will not be paid for by

the Employer and shall be deemed covered by other rates and prices in the Contract.

11.4 All payments shall be made in Ahmedabad.

12 Taxes and duties

12.1 The rates are inclusive of all taxes, insurance, labor overhead charges, contractor’s profit,

royalties etc except GST. The Contractor will have to pay all such taxes and duties for

the performance of this Contract. The Employer will deduct from the Contractor’s

monthly and other payments all taxes and duties, which he is bound to recover in

accordance with the applicable law.

12.2 The Contractor shall keep himself fully informed of all acts and laws of the Central &

State and local Governing bodies, all orders, decrees of bodies, tribunals having any

jurisdiction or authority which in any manner affect those engaged or employed, and

anything related to carrying out the work. All the bye-laws lay down by AMC/AUDA

and any other local bodies while executing the work shall be adhered to. All taxes of

local bodies shall be borne by the contractor. The Contractor shall arrange to give all

notices required by any authority and to pay to such authority all the fees that may have

to be paid for the material, plants, equipments etc. The Contractor shall also adhere to all

traffic restrictions notified by the local authorities. He shall protect and indemnify the

Owner and its officials & employees against any claim or liability arising out of

violations of any such laws, ordinances, orders, decree, whether by himself or by his

employees or his authorized representatives. Nothing extra shall be payable on these

13.0 Labour Welfare Cess

As per circular No. GHR/2005/04/CWA/2004/841/M-3 dt. 3/1/05 and G.R. No.

CWA/2004-1831-M(3) dt. 9/12/05 issued by G.O.G. (non-refundable) shall be deducted

from every bills which shall be deposited to Govt. Labour Department for Labour

14.0 Currencies

All payments shall be made in Indian Rupees.

15.0 Advance Payment

No Advance Payment shall be made.

16.0 Cost of Repairs

Loss or damage to the Works or Materials to be incorporated in the Works between the

Start Date and the end of the Defects Correction periods shall be remedied by the

Contractor at the Contractor's cost if the loss or damage arises from the Contractor's acts

B. FINISHING THE CONTRACT

17.0 Completion

The Contractor shall request the Engineer to issue a Certificate of Completion of the

Works and the Engineer will do so upon deciding that the Work is completed.

18.0 Termination

18.1 The Employer shall be entitled to terminate the contract if the contractor:

(a) Fails to carry out any obligation under the contract.

(b) Without reasonable excuse fails –

1. To commence the works on site within the period stated in the Appendix to Bid

after receipt by him of a Notice to this effect from the Engineer/Employer after

signing the agreement or

2. To proceed with the works, or any section thereof, within 28 days after received

3. Has failed to comply with a notice issued or an instruction issued within 28 days

after having received.

4. Abandons the works or otherwise plainly demonstrates the intention not to

continue performance of his obligation under the contract.

5. Sub-contracts the works or assigns the contract without the specific prior written

permission of the engineer.

6. Has failed to furnish the required securities or extension thereof in terms of the

7. Becomes bankrupt or insolvent, goes into liquidation, has a receiving or

administration order made against him, compounds with his creditors, or carries

on business under receive, trustee or manager for the benefit of his creditors, or if

any act is done or event occurs which (under applicable Laws) has a similar effect

to any of these acts of event.

18.2 In any of these events or circumstances, the Employer may, upon giving 14 days notice

to the contractor, terminate the contract and expel the contractor from the site. However,

in the case of sub-paragraphs (h), the Employer may be notice terminate the contract

18.3 The Employer’s decision to terminate the contract shall not prejudice any other rights of

the Employer, under the contract or otherwise.

18.4 After termination, the Employer may complete the works and/or arrange for any other

entities to do so. The Employer and these entities may then use any goods, contractor’s

documents and other design documents made by or on behalf of the contractor.

18.5 The Employer or the Contractor may terminate the Contract if the other party causes a

fundamental breach of the Contract.

18.6 Fundamental breaches of Contract include, but shall not be limited to the following:

(a) the Contractor stops work for 14 days when no stoppage of work is shown on the

current Program and the stoppage has not been authorized by the Engineer;

(b) the Employer or the Contractor is made bankrupt or goes into liquidation other than

for a reconstruction or amalgamation;

(c) The contractor fails to fulfill requirements;

(d) the Engineer gives Notice that failure to correct a particular Defect is a fundamental

breach of Contract and the Contractor fails to correct it within a reasonable period of

time determined by the Engineer;

(e) the Contractor does not maintain a security which is required;

(f) the Contractor has delayed the completion of works by the number of days for which

the maximum amount of liquidated damages becomes payable as defined in the

(g) if the Contractor, in the judgment of the Employer has engaged in corrupt or

fraudulent practices in competing for or in the executing the Contract.

(h) For the purpose of this paragraph: “corrupt practice” means the offering, giving,

receiving or soliciting of anything of value to influence the action of a public official

in the procurement process or in contract execution. “Fraudulent practice” means a

misrepresentation of facts in order to influence a procurement process or the

execution of a contract to the detriment of the Borrower, and includes collusive

practice among Bidders (prior to or after bid submission) designed to establish bid

prices at artificial non-competitive levels and to deprive the Borrower of the benefits

of free and open competition.”

18.7 When either party to the Contract gives notice of a breach of contract to the Engineer for

a cause other than those listed above, the Engineer shall decide whether the breach is

fundamental or not.

18.8 Notwithstanding the above, the Employer may terminate the Contract for convenience.

18.9 If the Contract is terminated the Contractor shall stop work immediately, make the Site

safe and secure and leave the Site as soon as reasonably possible and handover the site to

the Employer including all materials and plant and equipment existing there upon.

19.0 Contractor's own responsibility

The contractor is to set out and level the works and will be responsible for the accuracy of

the same. He shall also be responsible for the correctness of the positions, levels,

dimensions, and alignment of all parts of the structures as per instructions given to him. If

at any time any error shall appear during the progress of any part of the work, the

contractor shall at his own expense rectify such error if called upon to the satisfaction of

the Engineer in charge.

20.0 Overpayment & Underpayment

20.1 Whenever any claim Fifths payment of a sum to the Municipal Corporation arises out of

or under this Contract against the contractor the same may be deducted by the Municipal

Corporation from any sum then due or which at any time thereafter may become due to

the contractor under this contract and failing that under any other contract with the

Municipal Corporation or from any sum due to the contractor with the Municipal

Corporation (which may be available with Municipal Corporation), or from his retention

money, or he shall pay the claim on demand. The Municipal Corporation reserves the

right to carry out post payment audit and technical examination of the final bill including

all supporting vouchers, abstracts, etc.

20.2 The Municipal Corporation further reserves the right to enforce recovery of any over

payment when detected notwithstanding the fact that the amount of the final bill may be

included by the Contractor.

20.3 If as a result of such audit and technical examination any over payment is discovered in

respect of any work done by the Contractor or alleged to have been done by him under

the contract, it shall be recovered by the Municipal Corporation from the contractor by

way of all the means prescribed above or if any under payment is discovered by the

Municipal Corporation, any amount due to the contractor under this contract or under

payment may be adjusted against any amount then due or which may at any time

thereafter become due before payment is made to the contractor from him to the

Municipal Corporation on any other contract account whatsoever.

21.0 Materials obtain from dismantling

If the contractor, in the course of execution of work is called upon to dismantle any part

for reasons other than on account of bad or imperfect work, the materials obtained from

dismantling will be the property of the A.M.C. and will be disposed of as per instruction

of Engineer-in-charge in the best interest of the A.M.C.

22.0 Dispute to be referred to Arbitrator

The disputes relating to this contract, so far as they relate to any of the following matters,

whether such disputes arise during the progress of the work or after the completion or

abandonment thereof, shall be referred an independent Arbitrator appointed by AMC as

far possible in consultation with the agency if it is necessary and such disputes shall be

settled in accordance with the arbitration and conciliation Act.

(i) The rates of payment under clause 5 for any tools, materials and stores, in or

upon the works of the site thereof or belonging to the contractor or procured by

him and intended to be used for execution of the work or any part thereof

possession of which may have been taken by the Engineer-in-charge under the

said clause –5.

(ii) The reduction in rates made by the Engineer-in-charge under clause 9 from the

items of works not accepted as completed fully in accordance with the sanctioned

specifications.

(iii) The rate of part of payment for any class of work which is included in the

additional or altered work carried out by the contractor in accordance with the

instructions of the Engineer-in-charge under clause 14 and the rates for which is

to be determined under the said clause

(iv) The rates of payment for materials already purchased or agreed to be purchased

by the contractor before receipt of notice given by the Engineer-in-charge under

clause 15 and/or amount of compensation payable to the contractor under the said

clause for loss in respect of such materials.

(v) The amount of compensation which the contractor shall be liable to pay under

clause 17 in the event of this failure to rectify, remove or reconstruct the work

within the period specified in the written intimation or the amount of expenses

incurred by the Engineer-in-charge under the said clause17 in rectifying,

removing or re-executing the work or in removing and replacing the materials or

articles complained of.

(vi) The reduction of rates as may be fixed by the Engineer-in-charge under clause

for the inferior work or materials as accepted or made use of.

(vii) The amount of compensation payable by the contractor for damages as estimates

and assessed under clause

(viii) The amount payable to the contractor for the work carried out under clause 33 in

accordance with the instructions and the requirement of the Engineer-in-charge in

case where there are no specifications.

(ix) The awards declared by the arbitrator shall be speaking award giving reasons and

calculations to every item of claims. The decision will have to be implemented by

all the concerned.

(x) In case of dispute leading to the contractor or Ahmedabad Municipal Corporation

approaching on Court of Law. It shall be within the jurisdiction where the site of

work is situated.

The reference to arbitration proceeding under this clause shall not:

i) Entitle the contractor to stop the Affect the right of the Engineer-in-charge under clause

5 to take possession of all or any tools, plants, materials and stores in or upon the

works of site thereof belonging to the contractor or procured by him and intended to be

used for the execution of the work or any part thereof.

ii) Preclude the Engineer-in-charge from utilizing the materials purchased by the

contractor in any work or from removing such materials to other places, during the

period the work is stopped or suspended in pursuance, of notice given to the contractor

iii) Progress of the work or the carrying out the additional or altered work in accordance

with the provisions of clause 14 or as the case may be, of clause

23.0 Drawings and Photographs of the Works

23.1 The contractor shall do photography/ videography of the site as and when asked by

AMC. No separate payment will be made to the contractor for this. . The contractor shall

have to submit the same in hard copy as well as soft copy as and when demanded by the

23.2 No photograph of the works or any part thereof or plant employed thereon, except those

permitted under clause 59.1, shall be taken, or permitted to be taken by the Contractor or

by any of his employees or any employees of his sub-Contractors without the prior

approval of the Engineer in writing. No photographs/ videography shall be published or

otherwise circulated without the approval of the Engineer in writing.

Seal and Signature of the Bidder Additional City Engineer

(Drainage Project)

Date: Ahmedabad Municipal Corporation

(1) y:- yt xuLzh su <u Jdolt અમદાવાદ યુિનિસપલ કોપ રેશન y&Jt fuLî{ y&Jt htsg

mhfthle btLg યાદીના ftuLx[fxhtu Che NfNu. dJobuLxlt btLg

ftuLx[tfxhu અમદાવાદ યુિનિસપલ કોપ રેશન btk btLg ftuLx[tfxhtule યાદીbtk

hSMxuNl fhtJJtlwk hnuNu.

c:- btLg ©uKelt ftuLx[tfxh <hefu ltuk^Kelwk «btKvºtle MJ «btKe< fhuj

lfj xuLzh mt&u stuzJtle hnuNu.

f:- xuLzhhle jtgft<

ftb જવાબદાર xuLzhh <ubs su xuLzhh mwaJuj ftuLx[tfxhle ©uKe

ytJ<t ntug <ubs ftb fhJt mûtb ntug <ublu s ytvJtbtk ytJNu. ftb

ytv<t vnujt ftuLx[tfxhu ftb mk<tu»tfthf <ubs xtRb jebexbtk ÃþY

fhJt sYhe mJj<,ylwCJ, ûtb<t ylu VtgltLmegj hemtumo hsw fhJtlt

z:- અમદાવાદ યુિનિસપલ ctuzo XhtJ lk - 3836,<t.25/11/2011 &e b¤uj bkswhe

ylwmth <&t mexe.Rsluh mh¾gwjh,lk -17,<t.09/12/2012 bwsc

yb>tJt> Bgwrlrmvj ftuvtuohuNlbtk ftuLx[t¾xh hSMxuNl Ve,

heLgwyj Ve <&t yvd{uzuNl Ve ylu btv દંડો ægtlbtk htFe <u bwsc

ybj fhJtltu hnuNu.

E. xuLzh Ch<t vnujt xuLzhhu mtRx rlheûtK fhe juJwk. xuLzhh ftblt

«fth, ngt< hM<t, vtKe btdo, mkath ylu JvhtNlt ceò hM<tytu&e

mk<wÐ ntuJtlwk btle juJtbtk ytJNu. xuLzhhu ftblu mtRx ylu

rcÕzekd(fu su ftb fhJt, ftb ÃþY fhJt <&t ftblt buRxulLm btxu cltJuj

ntug).<ubs xuLzhhu yt mtRxlt ftb btxu, rcÕzekd btxu, gtzo, zevtu

btxule søgt vtu<tle he<u bu¤Je juJtle hnuNu. (xuLzhlwk ftb fhJt,

ftb vwhwk fhJt <&t ftblt buRxulLm btxule søgt)

(h) yt ftble mbg મયાદા bubtuhuLzb (ltuxem RLJtRxuz xuLzh) btk sKtJuj

«btKu le hnuNu.

(3) xuLzh Jujezexe rvhegz bubtuhuLzb (ltuxem RLJtRxuz xuLzh) btk

sKtJuj «btKu le hnuNu.

(4) xuLzh Ch<e JF<u yluoMxble ChJtle hnuNu.

(5) xuLzh Vtubo

xuLzh Vtubo ylu ylwmwrabtkle દરેકે દરેક Ftje søgt xuLzh Chlthu Chuje yt

mt&u btufjujt દ તાવેજ vh< fhJtlt hnuNu.

(6) ftuLx[tfxhtuyu leaule ctc<tu ft¤SÃËJof JtkaJt rJlk<e Au.

(1) ftuR fkvlelu ltbu xuLzh juJtbkt ytÔgwk ntug <tu fkvle J<e xuLzh

vh mne fhlth Ôgrf<lu yr^f]< fh<wk bwFðgthltbwk xuLzh mt&u hsw

(2) Bgwrl.ftuvtuohuNllt «Joðbtl rlgbtu ylwmth yluMxble ChJtle

hnuNu.ylu xuLzh mt&u cezJtle hnuNu.

(3) ftuLx[tfxhu RLfbxuût mkckr^< vtl lkch <&t cukf zexuRj ytvJtle

(4) ftuLx[tfxh vtmu ydtWlt ylwCJt ykdult «btKvºttule lfj xuLzh mt&u

(5) xuLzh Nh<tu ylu MvuNeVefuNl <&t CtJ vºtflt >huf vtlt ylu rJd<tu

vh ftuLx[tfxhu mne fhJe.

(6) <btb mw^tht, AufAtf ylu Dwkxujt jFtK vh ftuLx[tfxhu xwkfe mne

xuLzh Chlthlu sKtJJtbtk ytJu Au fu xuLzh દ તાવેજોના jFtKbtk ftuR

AufAtf fu VhuVth fhJt દેવાશે lrn ylu ytJe ftuR AufAtf fu VuhVth

juJtNu lrn, <ultk jFtKbtk ftuR Cwj ntug <tu <ult vh l Dwkx<t Ftuxt

jFtK fu ytkfzt vh Auftu bthelu <ult mtawk jFtK fu ytkfzt MvÐ Wfju

<u he<u jFJt. «ðguf mw^tht vh xwkfe mne fhJe.

(8) y:- xuLzh hsw fh<tk vnujt Ftm fhelu xuLzhbtk >NtoJuj mwaltytulwk

vtjl fhJtbtk ytÔgw lrn ntug <tu xuLzh ybtLg dKJtbkt ytJNu <ule

ltuk^ juJt rJlk<e Au. J¤e yt Vtubolwk bwFv]ƒ ylu ftuLx[tfxhtult

btdo>Nol btxu mtbtLg rlgbtu ylu mwaltytu vK ft¤SvwJof JtkaJt

(1) ftuEvK fthK દશા યા rmJtg ftuEvK fu c^t xuLzhtu yMJefthJtltu n¬

(h) xuLzhhu ctujvtuELx vullt બદલે NtneJt¤e vul&e Chujt xuLzhtu

ðþkh< s ybtLg dKJtbtk ytJNu.

c:- Wvhle ctc<tu Wvhtk< xuLzh leault mkstudtubtk <h< ybtLg

XhJtlu vtºt &Nu.

(1) xuLzh Chlth, rlg< ftb y&Jt ftb btxu bkswh fhuj y&Jt CtJ vºtflt ftuR

ftuz y&Jt vîr< y&Jt rJd<tubtk bwfuj Nh< y&Jt mw^thtbtk ftuR

VuhVth mwaJ<t ntug.

(h) xuLzhlwk ftuR vtlwk fu vtlt ftZe ltkÏgwk/ltkÏgt ntug fu બદ યું / બદ યા

(3) c^t mw^tht J^tht y&Jt atukxtzuje ftvjeytu Wvh xuLzh Chlthu

xwkfe mne l fhe ntug.

(4) xuLzhbtk <ubKu ftuR AufAtf fhe ntug, ylu

(5) xuLzh Chlth y&Jt vuZele ctc<btk >huf Ctde>th y&Jt <u ykdulwk

bwFðgthltbwk ^htJlth Ôgrf< mne l fhu y&Jt xuLzhbt <u btxu

htFJtbtk ytJuje søgtbtk mne/mneytu Wvh ftuR mtûteyu mtF fhe

f:- Nh<e xuLzh MJefthJtbtk ytJNu lne.

z:- xuLzh MJefthJw, રદ fhJw, ftulu ytvJw ylu fgt CtJ&e ytvJw <u

ykdu Bgwrl. frb§h©eltu rlKog ytFhe hnuNu. ftuR fthKmh stu

ftuLx[tfxhlu ftb l ytve Nftg <tu <u ykdu ftuLx[tfxh ftuRvK «fthltu

lwfNtle fu J¤<hltu nff>tJtuu fhe NfNu lrn fu ftg>tfeg ftgoJtne yt

ykdu &R NfNu lrn. xuLzh bkswh &gtltu y&o ftb ytve >uJtLþk Au

<uJtu &R NfNu lrn.Nh<e xuLzh MJefthJtbtk ytJNu lne.

(9) rJmkdr< ylu rnmtc stud:

nt& ^hJtlt ftbtule ctc< દશાવતા CtJ vºtfbtklt sÚ&t ylu hfble

ftuRvK Cwjawf leault rlgbtu ylwmth mhCh fhJtbtk ytJNu.

(1) xuLzh Chlthu દરના Ftltbtk sKtJuj Nç>tu ylu ytkfzt Jåau ftuR

ymkdr<lt fumbtk Nç>tuubtk sKtJuj hfb btLg htFJtbtk ytJNu.

(2) yufb દર ylu sÚ&tlt Ftuxt dwKtfthlt fthKu ftble ctc<tu દશાવતી CtJ vºtflt

Ftltbtk&e hfbbtk Cwj sKtg <tu yufb દર btLg htFJtbkt ytJNu ylu દરના

yt^thu dwKtfth mw^thJtbkt ytJNu.

(3) yufblt Ftltbtk&e <ubs ytd¤ Fuka<t mhJt¤tle <btb Cwjtu

mw^thJtbkt ytJNu.

(4) ctc<tu y&Jt mhJt¤t mtbu vwhu ytkfzu fhuj ftuR vK ctc< ægtlbtk

juJtbtk ytJNu lrn.

(10) y:- ftbltu «tud{um સમય મયાદા bwsc fhJtltu hnuNu. yt સમય મયાદા 10 jtF

mw^elt ftb btxu yuj.ytu.ytR. ytÃgt <theF&e 10 દવસથી <&t 10 jtF

&e Wvhltk ftb btxu yuj.ytu.ytR. ytÃg <theF&e 15 દવસથી શ &guj

dKJtbt ytJNu. <&t <u દર યાન ftble 5% juFu zevtuÍex Che fhthvºt

xuLzhbtk ftuLx[t¾xh îtht Chujt CtJ <btb «fthlt su <u «J<o<t

mhfthe xuût mrn<lt CtJ dKJtbtk ytJNu. ylu <ubtk atjw ftb >hBgtl

su ftuR VuhVth &Nu <ultu J^thtu awfJJtbtk ytJNu lrnk.

c:- mûtb m•tt îtht Yt.10,00,000.00 (દસ jtF) mw^elt xuLzhle

bkswheltu XhtJ vtzgt ct> (LOI) ytvJtbtk ytJNu ðgth ct> r>l -

btk rm¾gtuhexe zevtuÍex sbt fhtJJtle hnuNu. rm¾gtuhexe

zevtuÍex btuze ChJtlt rfMmtbtk Bgwrl.ftuvtuohuNlbtk «Joðbtl

rlgb ylwmth ftgoJtne fhJtbtk ytJNu.

f:- bkswh &guj xuLzhle સમય મયાદાbtk ftbdehe vqKo l &tg <tu

bubtuhuLzb (ltuxem RLJtRxuz xuLzh) btk sKtJuj «btKu bkswh

&guj mbgbgto>t ct>lt FhuFh ctfe ftble hfblt bn•tb 10% juFu

(jefJezexe zubuSm) vulÕxe Jmwj fhJtbtk ytJNu.

(11) y:- awfJKe:-

xuLzh Chlthu yu Jt< mbS juJtle hnuNu fu <uKu CtJ fu દર vwhtk

&gujt ftb btxult Au ylu <ubtk bswhe, vtjF, ÃjtLx, દેખરેખ, mhJem-

ftbdehe, Jes¤e, htugÕxe ylu ytufx[tug Jduhu ykNu <btb Faoltu

<&t sYh sKtg <tu ylu ðgthu ht<vt¤elt ftblu juJt c^t J^thtlt Faoltu

mbtJuN &Nu ylu xtkfujt CtJ fu દર fh<t J^thtle ftuR awfJKe ykdult

<ublt ftuR દાવા ægtlbtk juJtNu lnek ylu xuLzh Chlth Ftuxe

hswyt<lu fthKu y&Jt ftuR Ôgrf<yu (vAe<u ctk^ftb rJCtdltu

fboathe ntug fu l ntug) <ublu ytvuje btne<elu yt^thu vtA¤&e ftuR

દાવા hsw fhJt હકદાર hnuNu lnek. <ublw xuLzh ChJt <&t <ubtk જુ દા

જુ દા CtJ ylu દર ChJt btxu sYhe yuJe <btb btne<e vtu<tlt vûtu l

bu¤Je NfJtlu fthKu vtu<u xuLzh hsw fhJtlu je^u y&Jt <ubtk&e

WCt &<t ftuR stuFb fu sJtc>thebtk&e Axfe NfNu lnek. m>h

ftbbtk ftuR vK ò<lt ctk^ftblt bxehegj Wvh CtJ J^thtu ytvJtbtk

c:- ftuLx[tfxhtulu vubuLx / hlekd cej Bgwrl. frb§h©elt su <u «J<obtl

rlgb bwsc fhJtbt ytJNu. <&t Bgwrl. frb§h©e/mexe Rsluh©e lt su

<u JF<ltk mh¾gwjh «btKu ftbdehe/ybj fhJt rcl Nh<e ckDlf<ot

f:- ftuLx[t¾xhlt દરેક hlekd cejbtk&e ftuLx[t¾xhlu awfJJtle &<e fwj hfb

Wvh (xuLzh bwsclwk vubuLx + yu¾x[t ytRxb) 2 % juFu hexulNl

ble ftvJtbtk ytJNu su VtRlj cejbtk vh< ytvJtbtk ytJNu.

z:- htsg / fuL÷ mhfth©elt JF<tuJF<lt કાયદા bwsc su ftuR hfble fvt<

fhJtle &Nu <u bwsc ftuLx[tfxhlt cejbtk&e fvt< fhJtbt ytJNu.

(12) yu:- fhth mkc^e દ તાવેજો fhthlt ydðglt Ctd dKtNu ylu <u mD¤t mne<lt

fhth mbd{ ftblu jtdw vzNu.

ce:- xuLzhbtk દશાવેલ ftb mkck^e દ તાવેજમાં દશાવેલ rJd<btk rJmkd<<tlt

rfMmtbtk leau દશાવેલ ¢btlwmth દ તાવેજમાં દશાવેલ rJd< d{tng htFJtbkt

ytJNu. fhth mkc^e દ તાવેજો fhthlt ydðglt Ctd dKtNu ylu <u mD¤t

mne<lt fhth mbd{ ftblu jtdw vzNu.

(yu) yufb ylu કદ:-

(2) xuLzh VtuboLþk CtJvºtf

(3) MvuNeVefuNl

z[tu#dbtk કદ, ytfth, ytkfzt કદાચ Ftuxt ntug <tu btvujt કદ, ytfthlu

(2) xuLzh Vtubole yLþMþra-ce

(3) MvuNeVefuNl

Cwj Chujt fu Ftuxt JKollt rfMmtbtk yt mkck^e Wvhefûttyu

rJmkd<<t ykdule ltuk^ bwfe yuze.mexe yuLSlegh /

zu.BGþrl.frbNlh©ele bkswhe bu¤JJtbtk ytJNu ylu <u bwsc

fhJtbkt ytJuj rlKog ykr<b dKJtbkt ytJNu.

(13) xuLzhhu z[tuRkd fu MvuNeVefuNlbtk hnuje ftuR ûtr< fu Ftbeltu

duhjtC juJtle fturNN l fhJe ylu Rsluh Rlatsuo Ãjtl <&t

MvuNeVefuNlle ûtr<ytu mw^thJe <&t <ulwk mtawk y&oDxl

(14) yt Wvhtk< y.Bgw. ftuvtuo. lt slhj ftuLx[tfx fLzeNl vK btLg htFJle

(15) yufe JF<u yuf fh<t J^w søgtytuyu ftb NY fhJtltu Jfo ytuzoh b¤u

<tu ftb yuf mt&u s c^u NY fhJw vzNu.

(16) atjw ftbu mrJom jtRllu lwfNtl l &tg <u he<u ftb fhJtlw hnuNu. stu

ftuR mrJom jtRllu lwfNtl &Nu <tu <ule mkvwKo sJtc>the (òlbtj)

ftuLx[tfxhle vtu<tle hnuNu. mtRx Wvh ftb દર યાન bswhtu fu sl<tlt

ftuR btKmlt òlbtj lu lwfNtl &tg <ule જવાબદારી ftuLx[tfxhle hnuNu.

vtujem ફ રયાદ &tg <tu <ule જવાબદારી vK ftuLxtfxhle hnuNu. CuFz

Dme l vzu <ule જવાબદારી vK vtujem ફ રયાદમાં ftuLx[tfxhle hnuNu.

CuFz Dme l vzu <u btxu mjtb<elt vdjt (suJt fu દોરડું ctk^e bswh

Ftztbtk W<thJt, mtuhekd ylu Mx[xekd fhJt rJduhu) je^t Jdh

bsqhlu Ftztbtk W<thNu <tu ftuLx[tfxh s vtujem ફ રયાદમાં જવાબદાર

hnuNu ylu Bgwrl.ftuvtuohuNlltu ftuRvK MxtV ytlt btxu જવાબદાર

hnuNu lrn. ytxjwk mbSlu s xuLzh ChJwk. bswhtultu rJbtu vK

(17) bxehegÕm fu ceò xuMxed hevtuxo ftuLx[tfxhu vtu<tlt Fauo

ftuvtuohuNl sKtJu <u søgtyu fhtJJtlt hnuNu. bxehegÕm jtJJt fu

jR sJtltu mkvwKo Fao ftuLx[tfxhu CtudJJtltu hnuNu.

(18) M&¤ vrhrM&r< / sYhegt< bwsc ftb fhtJ<t xuLzhlt ytRxblt

sÚ&tbtk J^ ^x &tg <tu rlgb ylwmth <u ykdu ftb fhJt ftuLx[tfxh

(19) mtRx vh jtJJtbtk ytJuj btj mtbtl hesufx fhJtbt ytJu <tu <whk< દન

1btk vh< jR sJtltu hnuNu. yLg&t <ule lwfNtlle sJtc>the

ftuLx[tfxhle hnuNu.

(20) ftuLx[tfxhlu su ftuLx[tfx ytvJtbtk ytJu Au. <ubt mhfth©elt «Joðbtl

rlgb bwsc ve.yuV/juch yufx <&t bswhtu <&t MxtVle Jebt vtujeme

jElu <ult ftg>tlw vtjl fhJtlwk hnuNu <&t yt ykdu

Bgwrl.ftuvtuohuNl îtht su btne<e btkdJtbtk ytJu <u ytvJtle

hnuNu. bu.BGþrl.frbNlh©elt mh¾âwjh Bþsc sYhe ctknu^he vºtf

ytvJtLþk hnuNu.

(21) ftuRvK કાયદાકીય jexeduNl yb>tJt> Nnuhle ftuxobt hnuNu.

(22) btj su <u Mxtumo Wvh y&Jt mtRx Wvh jtuftulu lz<h l &tg <u

he<u mwalt bwsc W<thJtltu <ubs dtuXJJtltu hnuNu.

(23) ftuR vK mhfthe fhJuht ChJtle <btb sJtc>the ftuLx[tfxhle hnuNu.

(24) ftuLx[tfxh îtht xuLzhbt દશાવેલ MveNeVefuNl bwsc MxtLzzo

bxehegÕm MvuNeVefuNl bwsc jtJJtlt hnuNu.<&t xuMxekd

fhtJJtlwk hnuNu.<&t y ykdu «Joðbtl Bgwrl.ftuvtuohuNlt rlgbtulw

vtjl fhJtlw hnuNu.

(25) yt xuLzhbtk stu ftuR ytRxb hne dR ntug <tu <u y&Jt M&¤

M&e<e bwsc xuLzhbtk mbtJuN l ntug <uJe J^thtle ftbdehe

fhJtle &tg <uJt rfMmbtk Bgwrl.ftuvtuohuNlt «Joðbtl rlgb ylwmth

J^thtle ytRxblt CtJ lffe fhJtbtk ytJNu ylu <u bwsc awkfJKe

(26) atjw ftb દર યાન «tuxufNlle mkvwKo sJtc>the ftuLx[tfxhle hnuNu.

subtk vevzt, દોરડા, Cgmwaf ctuzo, ÃjtMxef vèe, rJ. ftuLx[tfxhu

jtJJtlwk ylu mtaJJtlwk hnuNu. ylu ftuRvK yfMbt< &Nu <tu <ule

mkvwKo sJtc>the ftuLx[tfxhle hnuNu.

(27) M&¤ Wvh atjw ftbdehe >hBgtl ftb fhlth ftuLx[tfxhlt bswh /

fboathe y&Jt yLg Ôgrf<lt yfMbt<lt rfMmbtk juch yufx bwsc fhJtle

&<e ftgoJtne <&t vtujem ftgoJtnele sJtc>the ftuLx[tfxhle hnuNu.

(28) stu MxtV mqalt ytvu <u bwsc mwalt vtu&e ftuLx[tfxhu htFJtle

hnuNu. <ubtk દરરોજ fhuj ftbdehe <&t yr^ftheytuyu ftb mw^thJt fu

«tud{um J^thJtlt ltuk^ fhuj ntug <tu <ulwk ftuBÃjtgLm ytvJtlwk

hnuNu ytJe ltu^lt sJtc l &gu fu <u «btKu M&¤ Wvh ybj l &gu

ftuLx[tfxhlu vulÕxe fhJtle m•ttt yuze.mexe yuLSlehgh©elu

(29) દરેક ytRxblt MvuNeVefuNl yb>tJt> Bgwrlrmvj ftuvtuohuNlltk

bkswh &guj <&t btLg htFuj MvuNeVefuNl Nh<tu bwsc hnuNu

su ytRxbbtk MvuNeVefuNl l ntug <uJt mkstudtubtk

yuze.mexe.yuLSlegh©eltu rlKog ytFhe hnuNu.Jtuxhekd fhJtbtk

lrn ytJu fu દરરોજ J^thtltu zucheÍ WvtzJtbtk lrn ytJu <tu ftuLx[tfxhlt

Fauo ylu sutFbu Jdh ltuxemu Jtuxhekd fhtJJtbtk <&t zucheÍ

WvtzJtbtk ytJNu ylu cejbtk&e hfb ftve juJtbtk ytJNu.

(30) juch JuÕVuh Vkz btxu ntjbtk htsg mhfth©eyu fhuj nwfb bwscle

hfb cejbtk&e ftve juJtbtk ytJNu.

(31) atubtmtltu vehegz <t.15 swl &e 14 ytufxtuch Mþ^eltu dKJtbtk

ytJNu. yt mbg દર યાન ftuLx[tfxh îtht ftbdehe fhe Nftg <ub l ntug

<tu <u Bþscle xtEb jebex J^the ytvJtbtk ytJNu.

(32) muÕm xuût / Jux lkch / ve.yuV. ftuz lkch / vtl lkch / S.yum.xe.

lkch rJduhu ftuLx[t¾xhu VhSgt< ytvJtlt hnuNu.

(33) ltbœth ftuxo îtht fhuj nwfb <ubs rlœuo»ttulwk awM<vKu vtjl

fhJtlwk hnuNu. subtk z[ulus lu jd<tk ftb btk ftuRvK mkkstudtubtk

bNel ntuj/ dxhbtk btKmlu W<thJtu lnek <ubs buLgwyj

M¾{uJSkd ykdule btdoœrNoft lwk vtjl fhJwk.

yufhthlwk Vtubo

(1) nwk/ybu yt&e yufhth fhwk Awk/fheyu Aeyu fu yt xuLzh

hsw fh<tk vnujtk buk/ybu M&¤le bwjtft< je^e Au ylu ftblu

jd<t btjmtbtl, bswhe ylu ceS ctc<tulu jd<e M&trlf

vrhrM&r<le ò<-btne<e bu¤Je Au.

(2) nwk/ybu yt&e yufhth fhwk Awk/fheyu Aeyu fu yt

ftuLx[tfxhtule Nh<tu rJd<tu ylu xuLzhlu jd<t દ તાવેજો

ft¤SvwJof yÇgtm fgtuo Au ylu <u bwsc <ultu ybj fhJt mkb<

ftuLx[tfxhle mne ylu

TECHNICAL SPECIFICATIONS:

REINFORCED CEMENT CONCRETE PIPES

SOCKET & SPIGOT

This specification covers the requirements for manufacturing, testing, supplying,

jointing and testing at work sites of Reinforced Cement Concrete (RCC) pipes, of

both pressure and non pressure varieties used for pumping mains and gravity,

sewers and storm water drains. Laying of pipes and fittings/specials are covered

in Technical Specifications: Section-D6. The two parts are complementary and

are to be read together for a correct interpretation of the provisions of this

D.1.1 APPLICABLE CODES

The manufacturing, testing, supplying, jointing and testing at work sites of RCC

pipes shall comply with all currently applicable statutes, regulations, standards

and codes. In particular, the following standards, unless otherwise specified

herein, shall be referred. In all cases, the latest revision of the codes shall be

referred to. If requirements of this specification conflict with the requirements of

the codes and standards, this specification shall govern.

D.1.2 MATERIALS

a) IS: 458 - Specification for precast concrete pipes (with and without reinf.)-

b) IS: 3597 -Method of tests for concrete pipes.

c) IS: 5382 -Specification for rubber sealing rings for gas mains, water mains

d) IS: 516 -Method of test for strength of concrete.

D.1.3 CODE OF PRACTICE

a) IS: 456 -Code of practice for plain and reinforced concrete

b) IS: 783 -Code of practice for laying of concrete pipes

Design of RCC pipes including reinforcement details and the ends of pipes shall

be in accordance with the relevant clauses of IS: 458-2021.

D.1.5 MANUFACTURING

Pipe should be with ISI mark confirming to IS-458-2021. Pipe can be

manufactured by spinning process or by vibrated casting process.

The method of manufacture shall be such that the form and the dimensions of the

finished pipes are accurate within the limits specified in relevant clause of IS:

458. The surfaces and edges of the pipes shall be well defined and true, and their

ends shall be square with the longitudinal axis. The ends of the pipes shall be

further reinforced by an extra ring of reinforcement to avoid breakage during

transportation.

The RCC pipes and rubber rings shall be systematically checked for any

manufacturing defects by experienced supervisors so as to maintain a high

standard of quality.

Owner/Engineer shall at all reasonable times have free access to the place where

the pipes and collars/rubber rings are manufactured for the purpose of examining

and testing the pipes and collars/rubber rings and of witnessing the test and

All tests specified either in this specification or in the relevant Indian Standards

shall be performed by the supplier/contractor at his own cost and in presence of

Owner/Engineer if desired. For this, sufficient notice before testing of the pipes

and fittings shall be given to Owner/Engineer.

If the test is found unsatisfactory, Owner/Engineer may reject any or all pipes of

that lot. The decision of Owner/Engineer in this matter shall be final and binding

on Contractor and not subject to any arbitration or appeal.

D.1.6 MATERIALS

Cement used for the manufacture of RCC pipes should be SRC and shall confirm

to relevant IS codes.

Aggregates used for the manufacture of RCC pipes shall conform to IS:383. The

maximum size of aggregate should not exceed one-third the thickness of the pipe

or 20 mm, whichever is smaller.

Mixing and Curing Water

Water shall be clean, colorless and free from objectionable quantities of organic

matter, alkali, acid, salts or other impurities that might reduce the strength,

durability or other desirable qualities of concrete and mortar.

Reinforcement used for the manufacture of the RCC pipes shall be mild steel

Grade I or medium tensile steel bars conforming to IS: 432 (Part-I) or hard-drawn

steel wire conforming to IS: 421 (Part-2). Reinforcement cages for pipes shall be

as per relevant requirements of IS:

Concrete used for the manufacture of RCC pipes shall conform to IS: 456. The

minimum cement content and minimum compressive strength of concrete shall

be as per relevant requirements of IS:458 (Latest Edition). Compressive strength

tests shall be conducted on 15 cm cubes in accordance with the relevant

requirements of IS: 456 and IS:

Rubber ring chords used in pipe joints shall be EPDM rubbering as per IS 5382 :

Pipes manufactured in compliance with IS:458 (Latest Edition) shall be either

water cured or steam cured for minimum stipulated curing period in accordance

with relevant requirements of the latest revised IS:458 (Latest Edition).

D.1.8 DIMENSIONS

The internal diameter, wall thickness and length of barrel and collar of pipes,

reinforcement (longitudinal and spiral), type of ends and minimum clear cover to

reinforcement and strength test requirements shall be as per the relevant

clauses/tables of IS: 458 for different classes of pipes.

Table – 3 of IS-458-2021

Design and Strength Test Requirements of Concrete Pipes of Class NP3

Reinforced Concrete, Medium Duty, Non-Pressure Pipes made by spinning process

Internal Barrel Reinforcements Strength Test Requirements

Diameter Wall for Three Edge Bearing Test

of Pipes in Thickness Longitudinal, Mild Spirals, Load to Produce Ultimate

mm Steel or Hard Drawn Hard 0.25 mm Crack Load

Steel Draws kN/linear metre

Minimum Kg/linear Kg/linear kN/linear

number metre metre metre

1. If mild steel is used for spiral reinforcement, the weight specified under col.5 shall be

increased to 140/125.

2. The longitudinal reinforcement given in this table is valid for pipes upto 2.5 m. effective

length for internal diameter of pipe upto 250 mm and upto 3 m. effective length for

higher diameter pipes.

3. Total mass of longitudinal reinforcement shall be calculated by multiplying the values

given in col.4 by the length of the pipe and then deducting for the cover length provided

at the two ends.

4. Concrete for pipes shall have a minimum compressive strength of 35 N/mm2 at 28 days.

Table – 5 of IS- 458-2021

Design and Strength Test Requirements of Concrete Pipes of Class NP3

Reinforced Concrete, Medium Duty, Non-Pressure Pipes Made by Vibrated Casting

Internal Minimum Reinforcements Strength Test Requirements

Diameter Barrel for Three Edge Bearing Test

of Pipes in Wall Longitudinal, Mild Spirals, Load to Produce Ultimate

mm Thickness Steel or Hard Drawn Hard 0.25 mm Crack Load

Steel Draws kN/linear metre kN/linear

Minimum Kg/linear Kg/linear

number metre metre

Note : Concrete for pipes shall have a minimum compressive strength of 35 N/mm2

Table – 6 of IS-458-2021

Design and Strength Test Requirements of Concrete Pipes of Class NP4

Reinforced Concrete, Heavy Duty, Non-Pressure Pipes

Internal Minimum Reinforcements Strength Test Requirements

Diameter Barrel for Three Edge Bearing Test

of Pipes in Wall Longitudinal, Mild Spirals, Load to Produce Ultimate

mm Thickness Steel or Hard Drawn Hard 0.25 mm Crack Load

Steel Draws kN/linear metre kN/linear

Minimum Kg/linear Kg/linear

number metre metre

Note : 1. If mild steel is used for spiral reinforcement, the weight specified under col.5

shall be increased to 140/125.

2. The longitudinal reinforcement given in this table is valid for pipes upto 2.5 m.

effective length for internal diameter of pipe upto 250 mm and 3 m. effective

length for higher diameter pipes.

3. Total mass of longitudinal reinforcement shall be calculated by multiplying the

values given in col.4 by the length of the pipe and then deducting for the cover

length provided at the two ends.

4. Concrete for pipes shall have a minimum compressive strength of 35 N/mm2 at

Table – 8 of IS-458-2021

Design and Strength Test Requirements of Concrete Pipes of Class NP4

Reinforced Concrete, Heavy Duty, Non-Pressure Pipes

made by Vibrated casting process

Internal Minimum Reinforcements Strength Test Requirements

Diameter Barrel for Three Edge Bearing Test

of Pipes in Wall Longitudinal, Mild Spirals, Load to Produce Ultimate

mm Thickness Steel or Hard Drawn Hard 0.25 mm Crack Load

Steel Draws kN/linear metre kN/linear

Minimum Kg/linear Kg/linear

number metre metre

Note : Concrete for pipes shall have a minimum compressive strength of 35 N/mm2 at

The tolerances regarding overall length, internal diameter of pipes or sockets and

barrel wall thickens shall be as per relevant clause of IS:

D.1.9 WORKMANSHIP AND FINISH

Pipes shall be straight and free from cracks except that craze cracks may be

permitted. The ends of the pipes shall be square with their longitudinal axis so

that when placed in a straight line in the trench no opening between ends in

contact shall exceed 3 mm in pipes up to 600 mm diameter (inclusive), and 6 mm

in pipes larger than 600 mm diameter.

The outside and inside surfaces of the pipes shall be smooth, dense and hard, and

shall not be coated with cement wash or other preparation unless otherwise

agreed to between Owner/Engineer and the manufacturer or supplier.

The pipes shall be free from defects resulting from imperfect grading of the

aggregate, mixing or moulding.

The pipes shall be free from local dents or bulges greater than 3 mm in depth and

extending over a length in any direction greater than twice the thickness of barrel.

The deviation from straight in any pipe throughout its effective length, tested by

means of a rigid straight edge parallel to the longitudinal axis of the pipe shall not

exceed, for all diameters 3 mm forever meter run.

All pipes for testing purposes shall be selected at random from the stock of the

manufacturer and shall be such as would not otherwise be rejected under the

criteria of tolerances as mentioned in IS:458 (Latest Edition).

During manufacture, tests on concrete shall be carried out as per IS:456. The

manufacturer shall supply, when required to do so by Owner/Engineer the results

of compressive tests of concrete cubes and split tensile tests of concrete cylinders

made from the concrete used for the pipes. The manufacturer shall supply

cylinders or cubes for test purposes required by the Owner/Engineer and such

cylinders or cubes shall withstand the tests prescribed by the manufacturer for the

hydrostatic test pressure. For non-pressure pipes, 2 percent of the pipes shall be

tested for hydrostatic test pressure.

The specimen of pipes for the following tests shall be selected in accordance with

relevant Clause of IS:458 (Latest Edition)and tests in accordance with the

methods described in IS:3597.

i) Hydrostatic test

ii) Three edge bearing test

iii) Absorption test

Note: Three edge bearing strength to produce 0.25 mm crack in case of special

design of pipes shall be as per IS:458:2003.

For Inspection at manufacturing site 24 hrs. access shall be provided to AMC

Engineers as well as engineer appointed by PMC/TPI agency. Apart from this

AMC will establish its own pipe testing facility where pipes will be randomly

tested. The cost of transporting the pipe to the testing facility & testing charges

shall be borne by the contractor.

D.1.11 SAMPLING AND INSPECTION

In any consignment, all the pipes of same class and size and manufactured under

similar conditions of production shall be grouped together to constitute a lot. The

conformity of a lot to the requirements of this specification shall be ascertained

on the basis of tests on pipes selected from it.

The number of pipes to be selected from the lot for testing shall be in accordance

with Table 15 of IS:458 (Latest Edition).

Pipes shall be selected at random. In order to ensure randomness, all the pipes in

the lot may be arranged in a serial order and starting from any pipe, every ‘n’th

pipe be selected till the requisite number is obtained, n being the integral part of

N/n, where N is the lot size and n is the sample size.

All pipes selected as per IS : 458 shall be inspected for dimensional requirements,

finish and deviation from straight. A pipe failing to satisfy one or more of these

requirements shall be considered as defective.

The number of pipes to be tested for tests under IS : 458 shall be in accordance

with column 4 of Table 15 of IS:458 (Latest Edition). These pipes shall be

selected from pipes that have satisfied the requirements mentioned in Clause

A lot shall be considered as conforming to the requirements of IS:458 (Latest

Edition) of the following conditions are satisfied.

(a) The number of defective pipes shall not be more than the permissible

number given in column 3 of Table 15 of IS:458 (Latest Edition).

(b) All the pipes tested for various tests as per IS-458 shall satisfy

corresponding requirements of the tests.

(c) In case the number of pipes not satisfying requirements of any one or

more tests, one or two further samples of same size shall be selected and

tested for the test or tests in which failure has occurred. All these pipes

shall satisfy the corresponding requirements of the test.

The following information shall be clearly marked on each pipe :

b) Internal diameter of pipe

c) Class of pipe

d) Date of manufacture, and

e) Name of manufacturer or his registered trademark or both.

D.1.13 LAYING OF PIPES

The laying of RCC pipes shall conform to Technical Specifications: Section.

D.1.14 JOINTING

Jointing of RCC pipes shall be done with SRC cement only and as per the

requirements of following specifications and as per the relevant IS. The type of

joints shall be as below. After jointing, extraneous material, if any, shall be

removed from the inside of the pipe and the newly made joints shall be

thoroughly cured. In case, rubber-sealing rings are used for jointing, these shall

conform to IS 5382 and shall be of such type as mentioned in IS-458:2003.

D.1.15 FLUSH JOINT (INTERNAL)

This joint shall be generally used for culvert pipes of 900-mm diameter and over.

The ends of the pipes are specially shaped to form a self-centering joint with an

internal jointing space 13-mm wide. The finished joint is flush with both inside

and outside with the pipe wall. The jointing space is filled with cement mortar in

the proportion as specified in IS-458-2003, mixed sufficiently dry to remain in

position when forced with a trowel or rammed.

FLUSH JOINT (EXTERNAL)

This joint is suitable for pipes which are too small for jointing from inside. This

joint is composed of specially shaped pipe ends. Each end shall be butted against

each other and adjusted in correct position. The jointing space shall then be filled

with cement mortar as specified in IS-458-2003, sufficiently dry and finished off

flush. Great care shall be taken to ensure that the projecting ends are not

damaged as no repairs can be readily affected from inside the pipe.

SPIGOT AND SOCKET JOINT (FLEXIBLE)

The RCC pipe with the rubber ring accurately positioned on the spigot shall be

pushed well home into the socket of the previously laid pipe by means of

uniformly applied pressure with the aid of a jack or similar appliance. The RCC

pipes shall be of spigot and socket type and rubber rings as specified in IS-458-

2003, shall be used, and the manufacturers instructions shall be deemed to form a

part of these specifications. The rubber rings shall be lubricated before making

the joint and the lubricant shall be soft soap water or an approved lubricant

supplied by the manufacturer.

Socket & Spigot NP3 & NP4 pipe with rubber ring roll on joint for diameter upto

900 mm should be provided as per table 14 pf IS 458 :

Socket & spigot NP3 & NP4 pipe with rubber ring confined joint for diameter

1000 mm to 2200 mm should be provided as per Table -17 of IS 458:2003.

D.1.16 CLEANING OF PIPES

As soon as a stretch of RCC pipes has been laid complete from Machinehole to

Machinehole or for a stretch as directed by Owner/Engineer, contractor shall run

through the pipes both backwards and forwards a double disc or solid or closed

cylinder 75 mm less in diameter than the internal diameter of pipes. The open

end of the incomplete stretch of pipeline shall be securely closed as may be

directed by Owner/Engineer to prevent entry of mud or silt etc.

If as a result of the removal of any obstructions Owner/Engineer considers that

damages may have been caused to the pipelines, he shall be entitled to order the

stretch to be tested immediately. Should such test prove unsatisfactory,

contractor shall amend the work and carry out such further tests as are required

by Owner/Engineer.

It shall also be ascertained by contractor that each stretch from Machinehole to

Machinehole or the stretch as directed by Engineer is absolutely clear and

without any obstruction by means of visual examination of the interior of the

pipeline suitably enlightened by projected sunlight or otherwise.

D.1.17 TESTING AT WORK SITE

After laying and jointing of RCC pipes is completed the pipeline shall be tested at

work site as per the following specifications and as directed by Owner/Engineer.

All equipment for testing at work site shall be supplied and erected by contractor.

Water for testing of pipes shall be arranged by him. Damage during testing shall

be contractor’s responsibility and shall be rectified by him to the full satisfaction

of Owner/Engineer. Water used for test shall be removed from pipes and not

released to the excavated trenches.

After the joints have thoroughly set and have been checked by Owner/Engineer

and before backfilling the trenches, the entire section of the sewer or storm water

drain shall be proved by contractor to be water tight by filling in pipes with water

to the level of 1.50 m above the top of the highest pipe in the stretch and heading

the water up for the period of one hour. The apparatus used for the purpose of

testing shall be approved by Owner/Engineer. Contractor if required by

Owner/Engineer shall dewater the excavated pit and keep it dry during the period

of testing. The loss of water over a period of 30 minutes should be measured by

adding water from a measuring vessel at regular 10 minutes intervals and noting

the quantity required to maintain the original water level. For the approval of this

test the average quantity added should not exceed 1 litre/hour/100 linear

metres/10 mm of nominal internal diameter. Any leakage including excessive

sweating which causes a drop in the test water level will be visible and the

defective part of the work should be removed and made good.

In case of pressure pipeline the completed stretch of pipeline shall be tested for

site test pressure as specified in IS-458-2003. The site test pressure should not be

less than the maximum operating pressure plus the calculated surge pressure, but

in no case should it exceed the hydrostatic test pressure as specified in IS:458

(Latest Edition).

D.1.18 MEASUREMENT

All RCC pipes shall be measured according to the work actually done and no

allowance will be made for any waste in cutting to the exact length required. The

measurement for pipes shall be in running meter nearest to a cm. of length along

the centre line of pipe as actually laid at work sites.

The rate for providing, laying and jointing of RCC pipes shall be deemed to

include the cost of rubber rings, jointing material, testing and extra excavation

required for ordinary bedding of pipes and also for pipe sockets, if any.

 If any damage is caused to the pipeline during the execution of work or while

cleaning/testing the pipeline as specified. Contractor shall be held

responsible for the same and shall replace the damaged pipeline and retest the

same at his own cost to the full satisfaction of Engineer.

 Water for testing of pipeline shall be arranged by Contractor at his own cost.

 Pipes shall be brought on site proportionate to the required progress for Thirty

D-5 : SITE FILLING

D.5.1.1 Apart from any other work / purpose for which this specification may be made applicable by

Engineer, this shall generally govern work involving filing site / plant over the entire area /

most of the area to raise the general grade level to the desired elevation. This work shall be

carried out as per applicable clauses “Earthwork in Grading, Excavation and Backfilling”

particularly clauses 10 &

D.5.2 FILL MATERIAL

D.5.2.1 General

D.5.2.1.1 All fill material whether such material is brought from outside borrow areas or excavation

within the site, will be subject to Engineer’s approval. Notwithstanding any approval given

to the fill material or borrow areas from which fill material is proposed to be brought,

Engineer / Owner reserves the right to reject such material which in his opinion either does

not meet the specification requirements or is unsuitable for the purpose for which it is

D.5.2.2 Borrow Areas

D.5.2.2.1 It shall be Contractor’s responsibility to locate suitable borrow areas for borrowing fill

material. Such areas will be inspected by Engineer and approved before Contractor makes

arrangements to borrow the fill material. The top soil which may contain vegetation,

rubbish, slush etc. shall not be used. If demanded by Engineer. Contractor shall arrange to

have trial pits of specified dimensions and numbers dug at locations specified, for Engineer

to examine the nature and type of material likely to be obtained from the borrow area.

D.5.2.3 Lead, Lift and Transportation

D.5.2.3.1 Unless separately provided, for, all lead, lift and transportation required for bringing in the

fill material from borrow areas or from excavation from within the site shall be included in

the Contractor’s quote unit rates.

D.5.2.4 Quality

D.5.2.4.1 The borrowed soil shall be generally granular, and non-cohesive. It shall consist of sand,

silty sand, murrum, ordinary soil, gravel and shingle. Dredged material, free from clayey

deposit, will be accepted. Fill material shall also be free from sulphates, salts, organise,

foreign and other harmful or objectionable materials. Any material rejected by Engineer

shall be removed from the site immediately.

D.5.3 ACCESS ROAD

D.5.3.1 Roads, whether of temporary or other nature, required to be constructed for access and for

movement of man, materials. Equipments, transport vehicles, vehicles carrying fill material

etc. to or over borrow areas and/or to or over areas on which fill has to be deposited shall be

constructed by Contractor at his cost. Such costs shall be deemed to have been included in

the unit rates quoted by Contractor. Such access roads shall be maintained in good condition

during all seasons to ensure completion of work according to time schedule.

D.5.4.1 Site clearing before filling shall be carried out as specified in the enclosed specification.

Earthwork in Grading, Excavation and backfilling.

D.5.5.1 Backfill

D.5.5.1.1 Backfill shall be deposited to bring the grade level to desired elevation after compaction of

D.5.5.1.2 Back fill shall be compacted, where so specified, by 12 tonne rollers as indicated in Clause

D.5.5.2.3 below. The fill material shall be compacted to the specified density, where so

D.5.5.1.3 If the density of fill use of rollers for compaction is not specified. Contractor shall ensure

necessary compaction by the passage of trucks, carrying the fill material over the deposited

fill in such a way that the entire fill area is covered. These will reasonably compact the

sand fill will be accepted by Engineer. However, Contractor shall ensure that every layer is

thus compacted before the succeeding layers are deposited. Each layer shall not exceed

mm in thickness.

D.5.5.1.4 Compaction of back fill by flooring the area shall be carried out where so specified. In this

case, Contractor should ensure that the fill material is not washed away. This work shall be

carried out as directed by Engineer.

D.5.5.2 Soil Fill

D.5.5.2.1 Approval soil fill consisting of ordinary soil, murrum, soil containing gravel, shingle etc.

shall be deposited in layers not exceeding 200 mm. Contractor should ensure that all clods of

earth are broken down to a size not larger than 100 mm.

D.5.5.2.2 Where density of fill or use of rollers is not specified, the fill shall be carried out as specified

in Clause D.5.5.1.3 above.

D.5.5.2.3 Where the fill material has to be compacted by use of rollers procedure as specified in Clause

D.1.10.5.2 of specification for “Earthwork in Grading, Excavation and Backfilling”.

D.5.5.2.4 Where specified, the required density of fill shall be obtained by proper compaction.

D.5.6 MEASUREMENT

D.5.6.1 The rate quoted by the contractor for filling available excavated earth (excluding rock if

any) will be considered for payment for site filling as per the quantity executed and measured

in cubic meter.

D-6 : CONCRETE WORKS

D.6.1.1 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.6.1.2 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.6.2 APPLICABLE CODES AND SPECIFICATIONS

D.6.2.1 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.6.2.2 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 bars

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

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

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.6.2.3 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.6.2.4 Code for Materials Storage

1. IS : 4082 - Recommendations on stacking and storing of construction

materials at site.

D.6.2.5 Code for Concrete Mix Design

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

2. SP : 23 - Handbook on Concrete Mixes.

D.6.2.6 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.6.2.7 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.6.2.8 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 4) 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.6.2.9 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 materials.

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

D.6.2.10 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.6.3.1 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.6.3.2 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.6.4 MATERIALS

D.6.4.1.1 Unless otherwise specified or called for by the Engineer, cement shall be Ordinary Portland

cement conforming to IS (latest edition) as per Schedule-B for construction box etc.

D.6.4.1.2 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 marred.

D.6.4.1.3 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

D.6.4.1.4 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 work.

D.6.4.2 Aggregates (General)

D.6.4.2.1 General

D.6.4.2.1.1“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

(Part I to VI).

D.6.4.2.1.2“Coarse Aggregate” is aggregate most of which is retained when passed through on 4.75 mm

D.6.4.2.1.3All 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.6.4.2.1.4Aggregates 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.6.4.2.2 Sampling and testing

D.6.4.2.2.1 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 contractor.

D.6.4.2.3 Storage of aggregates

D.6.4.2.3.1All 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.6.4.2.4 Specific Gravity

D.6.4.2.4.1 Aggregates having a specific gravity below 2.4 (saturated surface dry basis) shall not be

D.6.4.3 Fine Aggregate

D.6.4.3.1 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.6.4.3.2 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 size fraction.

D.6.4.3.3 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.6.4.3.4 Gradation : Unless otherwise directed or approved by the Engineer-in-charge, the grading of

sand shall be within the limits indicated hereunder.

IS : Sieve Grading Grading Grading Grading

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

D.6.4.3.4.1 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

600 microns 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

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.6.4.3.5 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, 2.35 mm, 1.18 mm, 600 microns and 150 microns) and dividing the

D.6.4.4 Coarse Aggregate

D.6.4.4.1 Coarse aggregate for concrete, except as noted above, shall conform to IS 383 and IS

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.6.4.4.2 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.6.4.4.3 Grading

D.6.4.4.3.1Coarse 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.6.4.4.3.2 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 40 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.6.4.4.4 Foreign material limitations

D.6.4.4.4.1 The percentage of deleterious materials in the aggregate delivered to the mixer shall not

exceed the following :

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.6.4.5.1 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.6.4.6 Reinforcement

D.6.4.6.1 Reinforcement bars shall conform to IS : 432, IS : 226 or IS : 1786 and the welded wire

fabric to IS : 1566 as shown or specified on the drawings. Only T.M.T. bars as for

specification will be followed.

D.6.4.6.2 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.6.4.6.3 If permitted by Engineer, welding of reinforcement shall be done in accordance with IS ;

2751 or IS : 9417 as applicable.

D.6.4.7 Admixtures

D.6.4.7.1 Plasticizer, water-reducing add mixture and concrete water proofer shall conform to IS :

9103 and integral water proofing admixtures to IS : 2645. Dosage of plasticizer used in

concrete work shall be 300 ml / 50 kg of cement. Manufacturer must comply ISO-9002

specifications.

D.6.4.7.2 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.6.4.7.3 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 1.5 percent of the weight of the cement in each batch of concrete. The

designed concrete mix shall be corrected accordingly.

D.6.4.8 Wastage

D.6.4.8.1 No wastage allowance for cement and steel shall be considered and paid for.

D.6.5 SAMPLES AND TESTS

D.6.5.1 All materials used for the works shall be tested before use.

D.6.5.2 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 extra cost.

D.6.5.3 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.6.5.4 Water to be used shall be tested to comply with requirement of IS :

D.6.5.5 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 cost.

D.6.6 STORING OF MATERIALS

D.6.6.1 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

D.6.6.2 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

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.6.6.3 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.6.6.4 Contractor shall make his own arrangements for storing water at site in tanks to prevent

D.6.6.5 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.6.7.1 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 and M10 shall

be Nominal whereas all other grades, M15 and above, shall be Design Mix Concrete.

D.6.7.2 Design Mix Concrete

D.6.7.2.1 Mix Design and Testing

D.6.7.2.1.1 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.6.7.2.1.2 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 Contractor.

D.6.7.2.1.3 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 Concrete Minimum Compressive Specified compressive

Strength strength

(N/Sq.mm at 7 days) (N/Sq.mm at 28 days)

D.6.7.2.1.4 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.6.7.2.2 Batching and Mixing of Concrete

D.6.7.2.2.1 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

D.6.7.2.2.2 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.6.7.2.2.3 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.6.7.3 Nominal Mix Concrete

D.6.7.3.1 Mix Design and Testing

D.6.7.3.1.1 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.6.7.3.2 Batching and Mixing Concrete

D.6.7.3.2.1 Based on the adopted nominal mixes, aggregates and cement shall be measured by weight.

D.6.8 FORM WORK

D.6.8.1 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, wedges etc.

D.6.8.2 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.6.8.3 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.6.8.4 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.6.8.5 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.6.8.6 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.6.8.7 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.6.8.8 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.6.8.9 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 formwork.

D.6.8.10 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.6.8.11 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.6.8.12 The Contractor shall provide adequate props carried down to a firm bearing without

overloading any of the structures.

D.6.8.13 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.6.8.14 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.6.8.15 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.6.8.16 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.6.9 Reinforcement Workmanship

D.6.9.1 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.6.9.2 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.6.9.3 Re-bending or straightening incorrectly bent bars shall not be done without approval of

D.6.9.4 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.6.9.5 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.6.9.6 Substitution of reinforcement, laps / splices not shown on drawing shall be subject to

Engineer’s approval.

D.6.10 TOLERANCES

D.6.10.1 Tolerance for formed and concrete dimensions shall be as per IS : 456 unless specified

D.6.10.2 Tolerances specified for horizontal or vertical building lines or footings shall not be

construed to permit encroachment beyond the legal boundaries.

D.6.11 PREPARATION PRIOR TO CONCRETE PLACEMENT

D.6.11.1 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.6.11.2 All arrangements formwork, equipment and proposed procedure, shall be approved by

Engineer. The Contractor shall maintain separate Pour Card for each pour as per the

format enclosed and shall produce before commencement of concreting to Engineer-in-

D.6.12 TRANSPORTING, PLACING AND COMPACTING CONCRETE

D.6.12.1 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.6.12.2 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

m as stipulated in clause D.6.8.13.

D.6.12.3 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.6.12.4 While placing concrete the Contractor shall proceed as specified below and also ensure the

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.6.12.5 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.6.12.6 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.6.12.7 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.6.13 MASS CONCRETE WORKS

D.6.13.1 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 if directed.

D.6.14.1 Curing and protection shall start immediately after the compaction of the concrete to protect

(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.6.14.2 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.6.14.3 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.6.14.4 Curing may also be done by covering the surface with an impermeable material such as

polyethylene, which shall be well sealed and fastened.

D.6.14.5 Extra precautions shall be exercised in curing concrete during cold and hot weather.

D.6.15 CONSTRUCTION JOINTS AND KEYS

D.6.15.1 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.6.15.2 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

D.6.15.3 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.6.15.4 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

D.6.16 FOUNDATION BEDDING

D.6.16.1 All earth surfaces upon which or against which concrete is to be placed, shall be well

compacted and free from standing water, mud or debris. Soft or spongy area shall be cleaned

out and back filled with either soil cement mixture, lean concrete or clean sand compacted as

directed by Engineer. The surfaces of absorptive soils shall be moistened.

D.6.16.2 Concrete shall not be deposited on large sloping rock surfaces. The rock shall be cut to form

rough steps or benches by picking, barring or wedging. The rock surface shall be kept wet

for 2 to 4 hours before concreting.

D.6.17 FINISHES

D.6.17.1 General

D.6.17.1.1 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.6.17.2 Surface finish Type F1

D.6.17.2.1 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.6.17.3 Surface finish Type F2

D.6.17.3.1 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.6.17.4 Surface finish Type F3

D.6.17.4.1 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

D.6.17.5 Integral cement finish on concrete floor

D.6.17.5.1 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.6.18 REPAIR AND REPLACEMENT OF UNSATISFACTORY CONCRETE

D.6.18.1 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.6.18.2 All through holes for shuttering shall be filled for full depth and neatly plugged flush with

D.6.18.3 Rejected concrete shall be removed and replaced by Contractor at no additional cost to

D.6.18.4 For patching of defective areas all loose materials shall be removed and the surface shall be

prepared as directed by the Engineer.

D.6.18.5 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.6.20 HOT WEATHER REQUIREMENTS

D.6.20.1 Concreting during hot weathers shall be carried out as per IS : 7861 (Part – I)

D.6.20.2 Adequate provisions shall be made to lower concrete temperatures which shall not exceed

Deg. C at the time of placement of fresh concrete.

D.6.20.3 Where directed by Engineer, Contractor shall spray non-wax based curing compound of

unformed concrete surfaces at no extra costs.

D.6.21 COLD WEATHER REQUIREMENTS

D.6.21.1 Concreting during cold weather shall be carried out as per IS : 7861 (Part-II).

D.6.21.2 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.6.21.3 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 monitored.

D.6.22 LIQUID RETAINING STRUCTURES

D.6.22.1 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.6.22.2 The minimum level of surface finish for liquid retaining structures shall be type F2. All such

structures shall be hydro-tested.

D.6.22.3 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.6.22.4 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.6.22.5 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.6.23 TESTING CONCRETE STRUCTURES FOR LEAKAGE

D.6.23.1 Hydro-static test for water tightness shall be done at full storage by Engineer, as described

D.6.23.1.1 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.6.23.1.2 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.6.23.1.3 Each compartment / segment of the structure shall be tested individually and then all

D.6.23.2 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.

D.6.24 OPTIONAL TESTS

D.6.24.1 If Engineer feels that the materials i.e. cement, sand coarse aggregates, reinforcement and

water are not in accordance with the specifications or if specified concrete strengths are not

obtained, he may order tests to be carried out on these materials in laboratory, to be approved

by the Engineer, as per relevant IS Codes. Client shall pay only for the testing of material

supplied by the Client, otherwise Contractor shall have to pay for the tests. Transporting of

all material to the laboratory shall however be done by the Contractor at no extra cost to

D.6.24.2 In the even of any work being suspected of faulty material or workmanship requiring its

removal or if the works cubes do not give the stipulated strengths, Engineer reserves the right

to order the Contractor to take out cores and conduct tests on them or do ultrasonic testing or

load testing of structure, etc. All these tests shall be carried out by Contractor at no extra

cost to the Client. Alternatively Engineer also reserves the right to ask the Contractor to

dismantle and re-do such unacceptable work at the cost of Contractor.

D.6.24.3 If the structure is certified by Engineer as having failed, the cost of the test and subsequent

dismantling / reconstruction shall be borne by Contractor.

D.6.24.4 The quoted unit rates / prices of concrete shall be deemed to provide for all tests mentioned

D.6.25 GROUTING

D.6.25.1 Grout shall be provided as specified on the drawings. The proportion of standard Grout shall

be such as to produce a flowable mixture consistent with minimum water content and

shrinkage. Surface to be grouted shall be thoroughly roughened and cleaned. All structural

steel elements to be grouted, shall be cleaned of oil, grease, dirt etc. The use of hot, strong

caustic solution for this purpose will be permitted. Prior to grouting, the hardened concrete

shall be saturated with water and just before grouting water in all pockets shall be removed.

Grouting once started shall be done quickly and continuously. Variation in grout mixes and

procedures shall be permitted if approved by ENGINEER. The grout proportions shall be

limited as follows :

Use Grout Thickness Mix Proportions W/C Ratio

a) Fluid mix Under 25 mm One part Portland cement

to one part sand.

b) General mix 25 mm and over but One part Portland cement

less than 50 mm to 2 part sand.

c) Stiff mix 50 mm and over One part Portland cement

to 3 part sand.

D.6.25.2 Non Shrink Grout

D.6.25.2.1 Non-shrink grout where called for in the Schedule of Quantities or specified on the drawings

shall be provided in strict accordance with the manufacturer’s instructions/ specifications on

D.6.26 INSPECTION

D.6.26.1 All materials, workmanship and finished construction shall be subject to continuous

inspection and approval of Engineer. Materials rejected by Engineer shall be expressly

removed from site and shall be replaced by Contractor immediately at no extra cost to Client.

D.6.27 CLEAN-UP

D.6.27.1 Upon the completion of concrete work, all forms, equipment, constructiontools, protective

coverings and any debris, scraps of wood etc. resulting from the work shall be removed and

the premises left clean.

D.6.28 ACCEPTANCE CRITERIA

D.6.28.1 Any concrete work shall satisfy the requirements given below individually and collectively

for it to be acceptable.

a) Properties of constituent materials;

b) Characteristic compressive strength;

c) Specified mix proportions;

d) Minimum cement content;

e) Maximum free-water / cement ratio;

f) Workability;

g) Temperature of fresh concrete;