Repairing Elecion Booth for Election 2026 Meghaningar, Kalapinagar area diff. Places in Asarva Ward

Name of work: મ ય ઝોન, અસારવા વોડમાં અ. યુ.કો. ચૂટં ણી- ૨૦૨૬ અ વયે મેઘાણીનગર તથા કલાપીનગર

િવ તારમાં મતદાન મથકોનું જ રી રીપેર ગ કરવાનું કામ. (yu.yth.me)

Tender Invited on Behalf of AMC, Central Zone.

Assistant Manager, Central Zone,

Central Zone Zonal Office”, B – Wing,

Third Floor,Sardar Patel Bhavan,

Danapith, Ahmedabad-380001.

Signature of Bidder Page 1 of

Ahmedabad Municipal Corporation

AHMEDABAD MUNICIPAL CORPORATION

Notice inviting Tender

Competent authority on behalf of Municipal Commissioner of Add.city.engineer. 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 મ ય ઝોન, અસારવા વોડમાં અ. યુ.કો. ચૂટં ણી- ૨૦૨૬ અ વયે મેઘાણીનગર તથા

2 Estimated Tender Amount Rs. 9,92,971.02 (exclusive of GST). GST will be paid extra by

AMC/Authority at prevailing rate to the contractor.

3 Tender fee Rs.

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

4 Time Limit 06 Months

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

Documents loaded mentioned AS PER TENDER NOTICE INVITED

6 Required registration Register “E-2” class having in Road Works in PWD in Govt. R&B /

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

7 Earnest Money Deposit Rs. 9,930.00- (Demand Draft / pay order / Bank Guarantee in favour of

(Bid security) Municipal Commissioner, Ahmedabad is to be submitted as prescribed

(1 % of Estimate put to as below. Demand Draft/Bank Guarantee shall be from approved list of

AMC of banks and the issuing branch of bank guarantee shall be of

Ahmedabad city only and it should be valid for for 180 days. ( As

Per AMC finance Dept . Circular No. 5 Dt. 5/5/2007 & F.D.

Circular No. 29 Dt. 7/8/2010 & attched ANNEXURE - 1 finance

dept.circular No-40 Dt.05/11/2020. E.M.D. shall be submitted

physically along with the Physical Submission when applicable.

8 Submission of EMD and Tender Fee & EMD should Submitted physically along with tender

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

submitted to Assistant Manager- Central Zone, 3rd 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.

Tender Documents • Whole tender shall be submitted only on www.nprocure.com

website as per Schedule mentioned in Notice inviting

• 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 Tender.

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

Tenders. The 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 Item

rate in 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.

Signature of Bidder Page 1 of

Ahmedabad Municipal Corporation

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 3 % of Contract Value to be submitted in the form of (Demand Draft /

pay order / Bank Guarantee in favour of Municipal Commissioner,

Ahmedabad. Bank Guarantee shall be from approved list of AMC of

banks as per attched ANNEXURE - 1 finance dept. latest circular.

and the issuing branch of bank guarantee shall be of Ahmedabad City

only. The validity of the Security Deposit shall be up to valid till

days beyond Date of completion of work.

The Security Deposit shall be payable in 10 days (for tenders upto

Rs.10.0 Lacs) or 15 days (for tenders of Rs.10.0 Lacs and above) from

date of receipt of LOI failing which interest @ 4% per annum will be

charged by AMC.

15 Deductions from Running

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

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 Not applicable in this case. If applicable than refer condition of

contract attached over rule as per form B-1 published by Government.

17 Compansation for Delay 10 % of the actual balance work after Time limit expired.

• 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 Add.city.engineer

Date: Ahmedabad Municipal

Signature of Bidder Page 2 of

Ahmedabad Municipal Corporation

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

TENDER DECLARATION FORM

Dy.City Engineer

Ahmedabad Municipal Corporation,

Name of Work:- મ ય ઝોન, અસારવા વોડમાં અ. યુ.કો. ચૂટં ણી- ૨૦૨૬ અ વયે મેઘાણીનગર તથા

કલાપીનગર િવ તારમાં મતદાન મથકોનું જ રી રીપેર ગ કરવાનું કામ. (yu.yth.me)

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

Signature of Bidder Page 3 of

Ahmedabad Municipal Corporation

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.

Yours faithfully

Seal and Sign of Contractor

Signature of Bidder Page 4 of

Ahmedabad Municipal Corporation

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

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

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.

Signature of Bidder Page 5 of

Ahmedabad Municipal Corporation

• 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

Signature of Bidder Page 6 of

Ahmedabad Municipal Corporation

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 the same.

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

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 two separate parts.

• Technical Bid

• Financial 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 18:00 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

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..

Signature of Bidder Page 7 of

Ahmedabad Municipal Corporation

• All duties, taxes, 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.

Signature of Bidder Page 8 of

Ahmedabad Municipal Corporation

Signature of Bidder Page 9 of

Ahmedabad Municipal Corporation

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

(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

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:

Signature of Bidder Page 10 of

Ahmedabad Municipal Corporation

Assistant Manager- Central Zone,

3rd 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- Central Zone,

3rd 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 if any.

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.

Signature of Bidder Page 11 of

Ahmedabad Municipal Corporation

21.0 SIGNING OF CONTRACT AGREEMENT

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

28 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 Within 15 days of receipt of the Letter of Acceptance, the Successful Bidder shall deliver

to the Employer a security deposit in the form of Bank Guarantee for an amount

equivalent to 5% of the Contract Price valid for the period of valid till 90 days beyond

Date of completion of work. The Security Deposit shall be payable in 10 days (for

tenders upto Rs.10.0 Lacs) or 15 days (for tenders of Rs.10.0 Lacs and above)from date

of receipt of LOA failing which interest @ 4% per annum 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 @ 4 % per annum 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

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.

Signature of Bidder Page 12 of

Ahmedabad Municipal Corporation

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 ‘LOA’ has been issued shall enter into an agreement at

Employer’s office within 15 days of LOA.

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 showing

Year Name of Project (Rs.) litigation/arbitration 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 Add,city.engineer

Date: Ahmedabad Municipal Corporation

Signature of Bidder Page 13 of

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

Signature of Bidder Page 14 of

Ahmedabad Municipal Corporation

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

• 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.

Signature of Bidder Page 15 of

Ahmedabad Municipal Corporation

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 immediately.

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

 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

Signature of Bidder Page 16 of

Ahmedabad Municipal Corporation

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 the Employer.

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 payment.

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 the prevailing taxes and duties of the Central, State and

Local Governing bodies prevailing on the date of award of the contract. 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

Signature of Bidder Page 17 of

Ahmedabad Municipal Corporation

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 or omissions.

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 notice

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

days after having received.

Signature of Bidder Page 18 of

Ahmedabad Municipal Corporation

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 immediately.

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 Contract data;

(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.

Signature of Bidder Page 19 of

Ahmedabad Municipal Corporation

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.

Signature of Bidder Page 20 of

Ahmedabad Municipal Corporation

(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

17 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

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 under clause

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

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.

Signature of Bidder Page 21 of

Ahmedabad Municipal Corporation

Seal and Signature of the Bidder Add.city.engineer

Date: Ahmedabad Municipal Corporation

Signature of Bidder Page 22 of

Ahmedabad Municipal Corporation

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Signature of Bidder Page 23 of

Ahmedabad Municipal Corporation

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(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 c>ÕGþ / c>Õgt ntug.

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

(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 l ntug.

f:- Nh<e xuLzh MJefthJtbtk ytJNu lne.

Signature of Bidder Page 24 of

Ahmedabad Municipal Corporation

z:- xuLzh MJefthJw, h> 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< >NtoJ<t CtJ vºtfbtklt sÚ&t ylu hfble

ftuRvK Cwjawf leault rlgbtu ylwmth mhCh fhJtbtk ytJNu.

(1) xuLzh Chlthu >hlt Ftltbtk sKtJuj Nç>tu ylu ytkfzt Jåau ftuR ymkdr<lt fumbtk

Nç>tuubtk sKtJuj hfb btLg htFJtbtk ytJNu.

(2) yufb >h ylu sÚ&tlt Ftuxt dwKtfthlt fthKu ftble ctc<tu >NtoJ<e CtJ vºtflt

Ftltbtk&e hfbbtk Cwj sKtg <tu yufb >h btLg htFJtbkt ytJNu ylu >hlt

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

(10) y:- ftbltu «tud{um mbgbgto>t bwsc fhJtltu hnuNu. yt mbgbgot>t 10 jtF mw^elt

ftb btxu yuj.ytu.ytR. ytÃgt <theF&e 10 r>Jm <&t 10 jtF &e Wvhltk ftb btxu

yuj.ytu.ytR. ytÃg <theF&e 15 r>Jm&e NY &guj dKJtbt ytJNu. <&t <u >hBgtl

ftble 5% juFu zevtuÍex Che fhthvºt fhJtltu hnuNu.

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 (>m jtF) mw^elt xuLzhle bkswheltu XhtJ

vtzgt ct> (LOI) ytvJtbtk ytJNu ðgth ct> r>l - 10 btk rm¾gtuhexe zevtuÍex

sbt fhtJJtle hnuNu. rm¾gtuhexe zevtuÍex btuze ChJtlt rfMmtbtk

Bgwrl.ftuvtuohuNlbtk «Joðbtl rlgb ylwmth ftgoJtne fhJtbtk ytJNu.

f:- bkswh &guj xuLzhle mbgbgto>tbtk 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

(11) y:- awfJKe:-

xuLzh Chlthu yu Jt< mbS juJtle hnuNu fu <uKu xtkfujt >h vwhtk &gujt ftb btxult Au

ylu <ubtk bswhe, vtjF, ÃjtLx, >uFhuF, 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 >h fh<t J^thtle ftuR

awfJKe ykdult <ublt ftuR >tJt ægtlbtk juJtNu lnek ylu xuLzh Chlth Ftuxe

Signature of Bidder Page 25 of

Ahmedabad Municipal Corporation

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 >tJt> hsw fhJt nf>th hnuNu

lnek. <ublw xuLzh ChJt <&t <ubtk sw>t sw>t CtJ ylu >h 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 ytJNu

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 hnuNu.

f:- ftuLx[t¾xhlt >huf 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 ftg>t bwsc su ftuR hfble fvt< fhJtle

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

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

mbd{ ftblu jtdw vzNu.

ce:- xuLzhbtk >NtoJuj ftb mkck^e >M<tJusbtk >NtoJuj rJd<btk rJmkd<<tlt rfMmtbtk leau

>NotJuj ¢btlwmth >M<tJusbtk >NtoJuj rJd< d{tng htFJtbkt ytJNu.fhth mkc^e

>M<tJustu fhthlt ydðglt Ctd dKtNu ylu <u mD¤t mne<lt fhth mbd{ ftblu

(yu) yufb ylu f>:-

(2) xuLzh VtuboLþk CtJvºtf

(3) MvuNeVefuNl

z[tu#dbtk f>, ytfth, ytkfzt f>ta Ftuxt ntug <tu btvujt f>, ytfthlu yLþmhÔþk

(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 fhtJJwk.

Signature of Bidder Page 26 of

Ahmedabad Municipal Corporation

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

(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 >hBgtl bswhtu fu sl<tlt ftuR btKmlt òlbtj lu lwfNtl

&tg <ule sJtc>the ftuLx[tfxhle hnuNu. vtujem Vrhgt> &tg <tu <ule sJtc>the vK

ftuLxtfxhle hnuNu. CuFz Dme l vzu <ule sJtc>the vK vtujem Vrhgt>bt

ftuLx[tfxhle hnuNu. CuFz Dme l vzu <u btxu mjtb<elt vdjt (suJt fu >tuhzwk ctk^e

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

W<thNu <tu ftuLx[tfxh s vtujem Vrhgt>bt sJtc>th hnuNu ylu Bgwrl.ftuvtuohuNlltu

ftuRvK MxtV ytlt btxu sJtc>th hnuNu lrn. ytxjwk mbSlu s xuLzh ChJwk.

bswhtultu rJbtu vK W<thJtu.

(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

(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 ck^tgujt Au.

(19) mtRx vh jtJJtbtk ytJuj btj mtbtl hesufx fhJtbt ytJu <tu <whk< r>l 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 ftg>tfeg 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 >NtoJuj 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 fhJtbtk ytJNu.

Signature of Bidder Page 27 of

Ahmedabad Municipal Corporation

(26) atjw ftb >hBgtl «tuxufNlle mkvwKo sJtc>the ftuLx[tfxhle hnuNu. subtk vevzt,

>tuhzt 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 >hhtus

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 hnuNu.

(29) >huf 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 >hhtus 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

>hBgtl 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 / dxh btk btKmlu W<thJtu lnek

<ubs buLgwyj M¾{uJSkd ykdule btdoœrNoft lwk vtjl fhJwk.

(34) yu.yth.me «fthlw xuLzh ntuR su <u ftb JtRÍ yjd&e ykœtsle bkswhe btkde

yjd&e Jfo ytuzoh ytve ftbdehe <tfeœu atjw fhJe su <u ftbJtRÍ ytvJtbtk

ytJuj Jfo ytuzoh btk œNtoJuj xtRbjebexbtk vwKo fhJtle hnuNu.

35) S.yum.xe.ftWLmej îtht l¬e fhuj «J<obtl S.yum.xe CtJ bwsc ytvJtbtk

Signature of Bidder Page 28 of

Ahmedabad Municipal Corporation

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 >M<tJustu ft¤SvwJof yÇgtm fgtuo Au ylu <u bwsc <ultu ybj

fhJt mkb< Awk/Aeyu.

ftuLx[tfxhle mne ylu rmfft

Signature of Bidder Page 29 of

Ahmedabad Municipal Corporation

AHMEDABAD MUNICIPAL CORPORATION

ENGINEERING DEPARTMENT

TECHNICAL SPECIFICATIONS

D-1 : EARTH WORK IN TRENCH, EXCAVATION AND BACK FILLING

D.1.1.1 This specification covers the general requirements of earth work in excavation for

form work etc. in different materials, filling in areas as shown in drawing, filling

back around foundations trenches, conveyance and disposal of surplus spoils or

stacking them properly as shown on the drawings and as directed by engineer and

all operations covered within the intent and purpose of this specification.

D.1.2 APPLICABLE CODES

D.1.2.1 The following Indian Standard codes, unless otherwise specified herein, shall be

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

1. IS 783 - Code of practice for laying of concrete pipes

2. IS 1200 - Method of measurement of building

3. IS 3764 - Safety code for excavation

4. IS 3385 - Code of practice for measurement of Civil Engineering

5. IS 2720 - Methods of test for soils

Part - I - Preparation of dry soil samples for various tests.

Part – II - Determination of water content.

Part – IV - Grain size analysis.

Part – V - Determination of liquid and plastic limit.

Signature of Bidder Page 30 of

Ahmedabad Municipal Corporation

Part – VII - Determination of water content dry density relation using

light compensation.

Part – IX - Determination of dry density – moisture content relation

by constant weight of soil method.

Part – XIV - Determination of density index (relative density) of

cohesionless soils.

Part - XXVIII - Determination of dry density of soils in place, by the sand

replacement method.

Part - XXXIII - Determination of the density in place by ring and water

replacement method.

Part – XXXIV - Determination of density of soil in place rubber baloon

Part - XXXVIII - Compaction control test (Hilf Method)

D.1.3 DEFINITIONS

D.1.3.1 The following terms shall have the meanings hereby assigned to them

 Top Soil - means any surface material including turf , suitable for use in soiling

areas to be grassed or cultivated.

 Excavation – means excavation in open cut down to levels required as per

approved drawings or otherwise as being the general levels after completion of

D.1.3.2 Drawings

D.1.3.2.1 Engineer will furnish drawings wherever, in his opinion, such drawings are required

to show areas to be excavated / filled grade level, sequence of priorities etc. The

contractor shall follow strictly such drawings.

D.1.4.1 Contractor shall furnish all tools, plants, instruments, qualified

supervision, personnel, labour, materials any temporary works, consumables,

any everything necessary, whether or not such items are specifically stated

here for completion of the job in accordance with specification requirements.

Signature of Bidder Page 31 of

Ahmedabad Municipal Corporation

D.1.4.2 Contractor shall carry out the survey of the site before excavation and properly

establish line and levels for various works such as earthwork excavation for

grading, basement, foundations, plinth filling, roads, drains, cable trenches,

pipelines etc. Such survey shall be carried out by taking accurate cross

sections of the area perpendicular to established reference / grid lines at 8 m.

intervals or nearer as determined by Engineer based on ground profile. These

shall be checked by Engineer and thereafter proper recorded.

D.1.4.3 The excavation shall be done to correct lines and levels. This shall also

include, where required, proper shoring to maintain excavations and also

furnishing, erecting and maintaining or substantial barricades around

excavated areas and warning lamps at night for ensuring safety.

D.1.4.4 The rates quoted shall also include for dumping of excavated materials in

regular heaps, bunds, rip rap with regular slopes as directed by Engineer,

within the lead specified and levelling the same so as to provide natural

drainage. Rock / soil excavated shall be stacked properly as directed by

Engineer. As a rule, all softer material shall be laid along the center of heaps,

the harder and more weather resisting materials forming the casing on the

sides and the top. Rock shall be stacked separately.

D.1.4.5 Carting and recarting of the excavated material

D.1.4.5.1 The rates quoted shall also includes the carting and staking properly or

spreading the excavated stuff within a lead of 100 m and recarting the same

to the site for backfilling the trenches with the selected excavated materials as

directed by Engineer in charge.

D.1.5.1 The area to be excavated filled shall be cleared of fences, trees, plants, logs,

stumps, bush, vegetation, rubbish, slush etc. and other objectionable matter. If any

roots or stumps of trees are met during excavation, they shall also be removed.

The material so removed shall be burnt or disposed off as directed by Engineer.

Where earthfill is intended, the area shall be stripped of all loose/soft patches, top

soil containing objectionable matter / materials before fill commences.

D.1.6 PRECIOUS OBJECTS, RELICS, OBJECTS OF ANTIQUITY ETC.

D.1.6.1 All gold, silver, oil, minerals, archaeological and other findings of importance, trees

cut or other materials of any description and all precious stones, coins, treasures,

relics, antiquities and other similar things which may be found in or upon the site

shall be the property of Client and Contractor shall duly preserve the same to the

satisfaction of Owner and from time to time deliver the same to such person or

persons as Owner may from time to time authorize or appoint to receive the same.

D.1.7 CLASSIFICATION

Signature of Bidder Page 32 of

Ahmedabad Municipal Corporation

D.1.7.1 All materials to be excavated shall be classified by Engineer, into one of the

following classes and shall be paid for at the rate tendered for that particular class

of material. No distinction shall be made whether the material is dry, moist or wet.

The decision of Engineer regarding the classification of the material shall be final

and binding on Contractor and not be a subject matter of any appeal or arbitration.

D.1.7.2 Any earthwork will be classified under any of the following categories:

D.1.7.2.1 Ordinary and Hard Soils

These shall include all kinds of solid containing kankar, sand, silt, moorum and / or

shingle, gravel, clay, loam, peat, ash, shale etc. which can generally be excavated by

spade, pick axes and shovel, and which is not classified under “soft and

decomposed rock” and “hard rock” defined below. This shall also include

embedded rock bounders not longer than 1 meter in any one direction and not

more than 200 mm in any one of the other two directions.

D.1.7.2.2 Soft and Decomposed Rock

This shall include rock, bounders, slag, chalk, state, hard micaschist, laetrile and all

other materials which in the opinion of Engineer is rock, but does not need blasting

and could be removed with picks, hammer, crow bars, wedges, and pneumatic

breaking equipment. The mere fact that Contractor resorts to blasting for reasons

of his own, shall not qualify for classification under ‘hard rock’.

This shall also include excavation in macadam and tarred road and pavements. This

shall also include rock boulders not longer than 1 meter in any direction and not

more than 500 mm in any one of the other two directions. Masonry to be

dismantled will also be measured under this item.

D.1.7.2.3 Hard Rock

This shall include all rock occurring in large continues masses which cannot be

removed except by blasting for loosening it. Harder varieties of rock with or

without veins and secondary minerals which, in the opinion of Engineer require

blasting shall be considered as hard rock. Bounders of rock occurring in such sizes

and not classified under (a) and (b) above shall also be classified as hard rock.

Concrete work both reinforced and unreinforced to be dismantled will be

measured under this item, unless a separate provision is made in the Schedule of

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D.1.8 EXCAVATION

D.1.8.1 All excavation work shall be carried out by mechanical equipment’s unless,

in the opinion of Engineer, the work involved and time schedule permit

D.1.8.2 Excavation for permanent work shall be taken out of such widths, lengths, depths

and profiles as are shown on the drawings or such other lines and grades as may be

specified by Engineer. Rough excavation shall be carried out to a depth 150 mm

above the final level. The balance shall be excavated with special care. Soft

pockets shall be removed ever below the final level and extra excavation filled up a

directed by Engineer. The final excavation if so instructed by Engineer, should be

carried out just prior to laying the mud-mat.

D.1.8.3 Contractor may, for facility of work or similar other reasons, excavate, and also

backfill later, if so approved by Engineer, at his own cost outside the lines shown on

the drawings or directed by Engineer. Should any excavation be taken below the

specified elevations, Contractor shall fill it up, with concrete of the same class as in

the foundation resting thereon, upto the required elevation. No extra shall be

claimed by Contractor on this account.

D.1.8.4 All excavation shall be done to the minimum dimensions as required for safety and

working facility. Prior approval of Engineer shall be obtained by Contractor in each

individual case, for the method he proposes to adopt for the excavation, including

dimensions, side slopes, dewatering, disposal etc. This approval, however, shall not

in any way relieve Contractor of his responsibility for any consequent loss or

damage. The excavation must be carried out in the most expeditious and efficient

manner. Side slopes shall be as steep as will stand safely for the actual soil

conditions encountered. Every precaution shall be taken to prevent slips. Should

slips occur, the slipped material shall be removed and the slope dressed to a

modified stable slope. Removal of the slipped earth will not be paid for if the slips

are due to the negligence of Contractor.

D.1.8.5 Excavation shall be carried out with such tools, tackles and equipment as described

hereinbefore. Blasting or other methods may be resorted to in the case of hard

rock; however not without the specific permission of Engineer.

D.1.8.6 Engineer may also direct that in some extreme case, the rock may be excavated by

heating and sudden quenching for splitting the rock. Fire-wood shall be used for

burning and payment shall be made for such work as called for in the schedule of

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D.1.9 STRIPPING LOOSE ROCK

D.1.9.1 All loose boulders, semi detached rocks (along with earthy stuff which might

move therewith) not directly in the excavation but so close to the area to be

excavated as to be liable, in the opinion of Engineer, to fall or otherwise

endanger the workmen, equipment, or the work, etc. shall be stripped off and

removed away from the area of the excavation. The method used shall be

such as not to shatter, or render unstable or unsafe the portion which was

originally sound and safe.

D.1.9.2 Any material not requiring removal as contemplated in the work, but which, in the

opinion of Engineer, is likely to become loose or unstable later, shall also be

promptly and satisfactorily removed as directed by Engineer. The cost of such

stripping will be paid for at the unit rates accepted for the class of materials in

D.1.10 FILL, BACK FILLING AND SITE GRADING

D.1.10.1 General

D.1.10.1.1 All fill material will be subject to Engineer’s approval. If any material is rejected by

Engineer, contractor shall remove the same forthwith from the site at no extra cost

to the owner. Surplus fill material shall be deposited / disposed off as directed by

Engineer after the fill work is completed upto a distance of 5 Km.

D.1.10.1.2 No earth fill shall commence until surface water discharges and streams have been

properly intercepted or otherwise dealt with as directed by Engineer.

D.1.10.2 Material

D.1.10.2.1 To the extent available, selected surplus soils from excavated materials shall

be used as backfill. Fill material shall be free from clods, salts, sulphates,

organic or other foreign material. All clods of earth shall be broken or

removed. Where excavated material is mostly rock, the bounders shall be

broken into pieces not larger than 150 mm size, mixed with properly graded

fine material consisting of murrum or earth fill up the voids and the mixture

used for filling.

D.1.10.3 If any selected fill material is required to be borrowed, Contractor shall make

arrangements for bringing such material from outside borrow pits. The material

and source shall be subject to prior approval of Engineer. The approved borrow pit

area shall be cleared of all bushed, roots of trees, plants, rubbish etc, top soil

containing salts / sulphate and other foreign material shall be removed. The

materials so removed shall be burnt or disposed off as directed by Engineer.

Contractor shall make necessary access to borrow areas and maintain the same, if

such access road does not exist, at his cost.

D.1.10.4 Filling in pits and trenches around foundations of structures, walls etc.

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D.1.10.4.1 As soon as the work in foundations has been accepted and measured, the spaces

around the foundations, structures, pits, trenches etc. shall be cleaned of all

debris, and filled with earth in layers not exceeding 20 cm, each layer being

watered, rammed and properly consolidated, before the succeeding one is laid.

Each layer shall be consolidated to the satisfaction of Engineer. Earth shall be

rammed with approved mechanical compaction machines if instructed. Usually

no manual compaction shall be allowed unless Engineer is satisfied that in some

cases manual compaction by tampers cannot be avoided. The final backfill

surface shall be trimmed and levelled to proper profile as directed by Engineer or

indicated on the drawing.

D.1.10.5 Plinth filling

D.1.10.5.1 Plinth filling shall be carried out with approved material as described herein before

in layers not exceeding 20 cm, watered and compacted with mechanical

compaction machines. If required engineer may however permit manual

compaction by hand tampers in case he is satisfied that mechanical compaction is

not possible. When filling reaches the finished level, the surface shall be flooded

with water, unless otherwise directed for atleast 24 hours, allowed to dry and then

the surface again compacted as specified above settlements at a later stage. The

finished level of the filling shall be trimmed to the level / slope specified.

D.1.10.5.2 Where specified in the schedule of works, compaction of the plinth fill shall be

carried out by roller in case of compaction of granular materials such as stands and

gravel, vibratory rollers shall be used. A smaller weight roller may be used only if

permitted by Engineer. As rolling proceeds water sprinkling shall be done to assist

consolidation. Water shall not be sprinkled in case of sandy fill.

D.1.10.5.3 The thickness of each unconsolidated fill layer can in this case be upto a maximum

of 200 mm. Engineer will determine the thickness of the layers in which fill has to

be consolidated depending on the fill material and equipment used. Rolling shall

commence from the outer edge and progress towards the centre and continue

until compaction is to the satisfaction of Engineer, but in no case less than

passes of the roller will be accepted for each layer. The compacted surface shall be

properly shaped, trimmed and consolidated to an even and uniform gradient. All

soft spots shall be excavated and filled and consolidated. At some locations / areas

if may not be possible to use rollers because of space restrictions etc. Contractor

shall then be permitted to use pneumatic tampers, rammers etc. and he shall

ensure proper compaction.

D.1.10.6 Sand filling in plinth and other places

D.1.10.6.1 At places backfilling shall be carried out with local sand if directed by Engineer. The

sand used shall be clean, medium grained and free from impurities. The filled in

sand shall be kept flooded with water for 24 hours to ensure maximum

consolidation. Any temporary work required to contain sand under flooded

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condition shall be to contractor’s account. The surface of the consolidated sand

shall be dressed to required level or slope. Construction of floor or other structures

on sand fill shall not be started until Engineer has inspected and approved the fill.

D.1.10.7 Filling in Trenches

D.1.10.7.1 Filling in trenches for pipes and drains shall be commenced as soon as the

joints of pipes and drains have been tested and passed. The backfilling

material shall be properly consolidated by watering and ramming, taking due

care that no damage is caused to the pipes.

D.1.10.7.2 Where the trenches are excavated in soil, the filling from the bottom of the trench

to the level of the centreline of the pipe shall be done by hand compaction with

selected approved earth in layers not exceeding 8 cm; backfilling above the level of

the centreline of the pipe shall also be done with selected earth by hand

compaction or other approved means in layers not exceeding 20 cm.

D.1.10.7.3 In case of excavation of trenches in rock, the filling upto a level 30 cm above the

top of the pipe shall be done with fine materials, such as earth, moorum etc. The

filling up of the level of the centreline of the pipe shall be done by hand compaction

in layers not exceeding 20 cm. Also the filling above the centreline of the pipe shall

be done by hand compaction or approved means in layers not exceeding 20 cm.

The filling from a level 30 cm. Above the top of the trench shall be done by hand or

other approved mechanical methods with broken rock filling of size not exceeding

20 cm mixed with fine material as available to fill up the voids.

D.1.10.7.4 Filling of the trenches shall be carried simultaneously on both sides of the pipe to

avoid unequal pressure on the pipe.

D.1.11 GENERAL SITE GRADING

D.1.11.1 Site grading shall be carried out as indicated in the drawings and as directed by

Engineer. Excavation shall be carried out as specified in the specification. Filling

and compaction shall be carried out as specified under Clause 10.0 and elsewhere

unless otherwise indicated below.

D.1.11.2 If no compaction is called for, the fill may be deposited to the full height in one

operation and levelled. If the fill has to be compacted, it shall be placed in layers

not exceeding 200 mm and levelled uniformly and compacted as indicated in

Clause 10.0 before the next layer is deposited.

D.1.11.3 To ensure that the fill has been compacted as specified, field and laboratory tests

shall be carried out by Contractor at his cost.

D.1.11.4 Field compaction test shall be carried out at different stages of filling and also after

the entire height has been completed. This shall hold good for embankments as

D.1.11.5 Contractor shall protect the earth fill from being washed away by rain or damaged

in any other way. Should any slip occur, Contractor shall remove the affected

material and make good the slip at his cost.

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D.1.11.6 The fill shall be carried out to such dimensions and levels as indicated on the

drawings after the stipulated compaction. The fill will be considered as incomplete

if the desired compaction has not been obtained.

D.1.11.7 If specifically permitted by Engineer, compaction can be obtained by allowing

loaded trucks conveying fill or other material to ply over the fill area. Even if such a

method is permitted, it will be for contractor of demonstrate that the desired /

specified compaction has been obtained. In order that the fill may be reasonably

uniform throughout, the material should be dumped in place in approximately

uniform layers. Traffic over the fill shall then be so routed to compact the area

uniformly throughout.

D.1.11.8 If so specified, the rock as obtained from excavation may be used for filling and

levelling to indicate grades without further breaking. In such an event, filling layers

not exceeding 50 cms approximately. After rock filling the void in the rocks shall be

filled with finer materials such as earth, broken stone etc. and the area flooded so

that the finer materials fill up the voids. Care shall be taken to ensure that the finer

fill material does not get washed out. Over the layer so filled, a 100 mm thick

mixed layer of broken materials and earth shall be laid and consolidation carried

out by a 12 tonne roller. No less than twelve passes of the roller shall be accepted

before subsequent similar operations are taken up.

D.1.12 FILL DENSITY

D.1.12.1 The compaction, only where so called for, in the schedule of quantities / items shall

comply with the specified (Standard Proctor / modified Proctor) density at moisture

content differing not more than 4 percent from the optimum moisture content.

Contractor shall demonstrate adequately at his cost, by field and laboratory tests

that the specified density has been obtained.

D.1.13.1 Lead for deposition / disposal of excavated material, shall be as specified in the

respective item of work. For the purpose of measurement of lead, the area to be

excavated or filled or area on which excavated material is to be deposited /

disposed off shall be divided into suitable blocks and for each of the blocks, the

distance between centerlines shall be taken as the lead which shall be measured by

the shortest straight line route taken by Contractor. No extra compensation is

admissible on the grounds that the lead including that for borrowed material had

to be transported over marshy or ‘katcha’ land / route.

D.1.14 MEASUREMENT AND PAYMENT

D.1.14.1 Payment for Excavation shall be made on actual. The calculation for

excavation shall be based on the foundation plan of the structure considering

working area of 1m beyond edge of raft / footing..

D.1.14.2 Unless otherwise specified, the unit rates quoted for excavation in different

types of material shall also account for a basic lead of 100 meters for disposal

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as specified or directed. Only leads beyond the basic lead of 100 meters will

be considered as extra lead and paid for at the rates quoted in the schedules.

D.1.14.3 Backfilling as per specifications the sides of foundations of columns,

footings, structures, walls, tanks, rafts, trenches etc. with excavated material

will not be paid for separately. It shall be clearly understood that the rate

quoted for excavation including backfilling shall include stacking of

excavated material as directed, excavation / packing of selected stacked

material, conveying it to the place of final backfill, compensation etc. as

specified. As a rule material to be backfilled shall stacked temporarily within

the basic lead of 100 meters unless otherwise directed by the Engineer. If

Engineer directs / permits a lead of over 100 meters for such material, the

conveyance of the material for the extra distance over the basic lead of

meters for backfilling will be paid for.

D.1.14.4 Payment for fill inside trenches, plinth of similar filling with selected

excavated material will be made for only compaction as specified / directed.

Cost of all other operations shall be deemed to have been covered in the rate

quoted for excavation. Payment for this work will be made based on

measurement of trench dimensions filled. The plinth ground levels shall be

surveyed before hand for this purpose. If no compaction is specified / desired

such filling will not be separately paid for. In such an event, the fill shall be

levelled / finished to the profile as directed at no extra cost.

D.1.14.5 Backfilling with borrowed earth will be paid for at rates quoted. The quoted

rate shall include all operations such as clearing, excavation, lead and

transport, fill, compaction etc. as specified. Actual quantity of consolidated

filling or actual quantity or excavation in the borrow pits (less such top soil

which has been excavated and not used for filling) whichever is less shall be

measured and paid for in cubic meters. The lead, lift etc. shall be as indicated

in the schedule of quantities.

D.1.14.6 Actual quantities of consolidated sand filing shall be measured and paid in

D-4 : RAIN WATER DRAINAGE

D.4.1.1 This section covers the drainage of rain water in excavated areas.

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D.4.2.1 Grading in the vicinity of excavation shall be such as to exclude rain / surface water

draining into excavated areas. Excavation shall be kept clean of rain and such

water as the Contractor may be using for his work by suitably pumping out the

same at no extra cost to the owner. The scheme for pumping and discharge of such

water shall be approved by the Engineer.

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 intended.

D.5.2.2 Borrow Areas

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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

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 fill.

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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 specified.

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 200 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

D.5.5.2.4 Where specified, the required density of fill shall be obtained by proper

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

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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.

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

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.

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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.

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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

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.

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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

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

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

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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 from Engineer.

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 2386 (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 BIS sieve.

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.

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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

D.6.4.3 Fine Aggregate

D.6.4.3.1 Fine aggregate shall consist of natural or crushed sand conforming to IS

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

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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

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 Designation Grading Grading Grading Grading

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

other than 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 600 micron IS sieve or to percentage passing any other

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

aggregates conforming to grading zone IV shall not be used. Mix designs and

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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

microns) and dividing the sum by

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 2386. This shall consist of crushed stone and shall be clean and free from

elongated, flaky or laminated pieces, adhering coatings, clay lumps, coal residue,

clinkers, slag, alkali, mica, organic matter or other deleterious matter.

D.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

Size aggregate of normal size

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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

Uncrushed Crushed

1 Material finer than 75 micron 3.0

2 Coal and lignite 1.0

3 Clay lumps 1.0

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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

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

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 :

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

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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 with.

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

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insulated from the floor to avoid moisture from ground. Not more than 15 bags

shall be stacked in any tier. Storage arrangement shall be approved by Engineer.

Storage under tarpaulins shall not be permitted. Each consignment of cement shall

be stored separately and consumed in its order or receipt.

D.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 contamination.

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.

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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

Grade of Concrete Minimum Compressive Specified compressive

Strength strength

(N/Sq.mm at 7 days) (N/Sq.mm at 28 days)

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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 value.

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

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 :

D.6.7.3 Nominal Mix Concrete

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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 :

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

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

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

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

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

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

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

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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

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.

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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

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

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

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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 Engineer.

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

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 otherwise.

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.

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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-charge.

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 1.0 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 following :

a) Continuously between construction joints and predetermined abutments.

b) Without disturbance to forms or reinforcement.

c) Without disturbance to pipes, ducts, fixings and the like to be cast in;

ensure that such items are securely fixed. Ensure that concrete cannot

enter open ends of pipes and conduits etc.

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

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

purpose and by using suitable chutes or pipes.

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

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

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

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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 it from :

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

(b) leaching out by rain and flowing water;

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

(d) high internal thermal gradients;

(e) low temperature of frost;

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

bond to the reinforcement.

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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

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

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 Engineer.

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

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exceeding 150 mm thickness shall be placed and well rammed against the old work.

Thereafter work shall proceed in the normal way.

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-

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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 Contractor.

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

D.6.18.3 Rejected concrete shall be removed and replaced by Contractor at no additional

cost to Client.

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

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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

D.6.19 VACUUM DEWATERING OF SLABS

D.6.19.1 Where specified floor slabs, either on grade or suspended, shall be finished by

vacuum dewatering including all operations such as poker vibration, surface

vibration, vacuum processing, floating and trowelling as per equipment

manufacturers recommendation. The equipment to be used shall be subject to

Engineer’s approval.

D.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 40 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

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.

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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,

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

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 below :

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

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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

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 Client.

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.

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D.6.24.4 The quoted unit rates / prices of concrete shall be deemed to provide for all tests

mentioned above.

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 the drawings.

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

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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;

h) Density of fully compacted concrete;

i) Cover to embedded steel;

k) Tolerances in dimensions;

l) Tolerances in levels;

n) Surface finishes;

o) Special requirements such as :

i) water tightness;

ii) resistance to aggressive chemicals

iii) resistance to freezing and thawing

iv) very high strength

v) improved fire resistance

vi) wear resistance

vii) resistance to early thermal cracking

D.6.28.2 The Engineer’s decision as to the acceptability or otherwise of any concrete work

shall be final and binding of the Contractor.

D.6.28.3 For work not accepted, the Engineer may review and decide whether remedial

measures are feasible so as to render the work acceptable. The Engineer shall in

that case direct the Contractor to undertake and execute the remedial measures.

These shall be expeditiously and effectively implemented by the Contractor.

Nothing extra shall become payable to the Contractor. Nothing extra shall become

payable to the Contractor by the Client for executing the remedial measures.

D.6.29 MODE OF MEASUREMENT AND PAYMENT

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D.6.29.1 The unit rate for concrete work under various categories shall be all inclusive

and no claims for extra payment on account of such items as leaving holes,

embedding inserts, etc. shall be entertained unless separately provided for in

the schedule of quantities. No extra claim shall also be entertained due to

change in the number, position and / or dimensions of holes, slots or

openings, sleeves, inserts or on account of any increased lift, lead of

scaffolding etc. All these factors should be take into consideration while

quoting the unit rates. Unless provided for in the Schedule of Quantities the

rates shall also include fixing insets in all concrete work, whenever required.

D.6.29.2 Payments for concrete will be made on the basis of unit rates quoted for the

respective items in the Schedule of Quantities. No deduction in the concrete

quantity will be made for reinforcements, inserts etc. and opening less than

0.100 of a sq.m in areas where concrete is measured in sq.m and 0.010 cu.m

where concrete is measured in cu.m. Where no such deduction for concrete

is made, payment for shuttering work provided for such holes, pockets, etc.

will not be made. Similarly the unit rates for concrete work shall be inclusive

or exclusive of shuttering as provided for in the Schedule of Quantities.

D.6.29.3 Payment for beams will be made for the quantity based on the depth being

reckoned from the understide of the slabs and length measured as the clear

distance between supports. Payment for columns shall be made for the

quantity based on height reckoned upto the underside of slab / beams.

D.6.29.4 The unit rate for precast concrete members shall include formwork,

mouldings, finishing, hoisting and setting in position including setting

mortar, provision of lifting arrangement etc. complete. Reinforcement and

inserts shall be measured and paid for separately under respective item rates.

D.6.29.5 Only the actual quantity of steel embedded in concrete including laps as

shown on drawings or as approved by Engineer shall be measured and paid

for, irrespective of the level or height at which the work is done. The unit

rates for reinforcement shall include lap chairs, spacer bars etc.

D.6.29.6 Where the formwork is paid for separately, it shall be very clearly understood

that payment for formwork is inclusive of formwork, shuttering, shoring,

propping scaffolding etc. complete. Only the net area of concrete formed

(shuttered) shall be measured for payment.

CONCRETE POUR CARD

Client : Date :

Project : Structure :

Contractor : Max. Aggregate size slump : mm/ mm/

Drg. NO. : Start/ Completion Time :

Concrete Grade : Mixing Time :

Sr.N Item Contractor’s Engineer’s Remarks

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1 Centre lines Checked

2 Form work and Staging checked for Accuracy,

Strength & finish

3 Reinforcement Checked

4 Cover to Reinforcement Checked

5 Verified test certificate for cement / steel Yes / No Yes / No

6 Adequacy of Materials / Equipment Yes / No Yes / No

7 Embeded Parts checked Civil

(Location and Plumb)

Pour Authorised site Engineer

8 Soffit(S) and pour top ( T ) levels S(B) T(B)

checked before ( B ) and after (A) S(A) T(A)

from removal (Only of Beams of over

1 M. span & Important structures link

9 Construction joint location & time (If

not as per Drawing)

10 Cement Consumption in Kgs.

11 Numbers of cubes and identification

12 Test cube results (7 Days / 28 Days)

13 Concrete Condition on Form removal

Very Good/ Good / Fair / Poor

Engineer-in-Charge Contractor

1. Each item to be checked & signed by the respective engineers.

2. Item 8 to 13 ( Both inclusive ) to be filled by only engineers of the

3. Each pour to have separate cards in triplicate one each for client & site

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4. Under remarks indicate deviations from drawings & specifications

congestion in reinforcement if any unusual occurrences such as failure

of equipment sinking of supports / props, heavy rain affecting

reasonable. Poor compaction improper curing other deficiencies

observations etc.

D.6.31 MATERIALS : STRUCTURAL STEEL

All structural steel shall be comply with the requirements of IS 226-1961 and

structural steel work IS 1915-1962 specifications for structural steel.

D.6.31.1 Steel for Pins and Rollers

Rolled steel pins and rollers, shall comply with requirements of the IS

specifications appropriate for the work. Steel casting for cast steel pins shall

conform to grade 1 or 3 of IS 1030-1956 specifications for steel casting (for

general engineering purposes as appropriate).

D.6.31.2 Bolts and Nuts

Mild steel for bolts and nuts when tested shall comply with IS 1608-1960 and

shall have tensile strength of not less than 2500 Kg/cm2. Plain washers shall be

D.6.31.3 Welding Electrode

Mild steel electrodes shall comply with requirements of IS 814-1957 specification

for covered electrodes for metal arc welding of mild steel.

D.6.31.4 Workmanship

All work shall be in accordance with the drawings and shall satisfy IS specification

No. 1915-1961. Care shall be taken to ensure that all parts in assembly fit

accurately together. Notes or specifications on the drawings supplied by the

Engineer-in-Charge/consulting Engineer, are to be constructed as superseding or

cancelling any clause of this specifications with which they conflict. On all

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drawings dimensions shown in figures shall be acted in preference to

measurement by scale.

D.6.31.5 Straightening

All structural steel members and parts shall have straight edges. All straightening

shaping and levelling etc. shall be done by pressure only and not by hammering.

All joggles and knees shall be formed by pressure and where practicable in

making these, the metal shall not be cut and welded.

D.6.31.6 Cutting

All structural steel parts where required shall be sheared, cropped sawn or flame

cut and ground accurately to the required dimensions and shape.

D.6.31.7 Bolts Holes

The diameter of bolts holes shall be 1.5 to 2.0 mm. larger than the nominal

diameter of bolt. All holes for bolts shall be drilled unless permitted by Engineer-

in-Charge for punching the holes. Care shall be taken, such as surrounding

material is not deformed or damaged in case of punching the hole is allowed.

D.6.31.8 Welding

Welding of steel conforming to relevant IS specifications shall be in accordance

with general requirements of metal arc welding. In additional to general

requirement, the following care shall be taken :-

(a) The welding shall be positioned for downward welding wherever

(b) The welding current shall conform with respect of voltage and empeare

to the recommendations of the manufacturers of the electrode being

used. The arc length, voltage and empeare shall be suited to the

thickness of material, type of groove and other circumstances of the

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(c) The surface to be welded and surrounding material for a distance of

atleast 155 mm shall be free from scale, dirt, grease, paint, heavy rust or

other surface deposit.

(d) Members to be welded shall be held in correct position by holes, clamps,

wedges, jigs or other suitable devices or by tack welding until welding has

been completed, such fastening as may be used shall be adequate to

ensure safety. Suitable allowance shall be made for war page and

(e) Tack welds located where the final welds will later be made shall be

subject to the same quality requirements as final welds. Defective and

broken tack welds shall be removed before final welding.

(f) Fusion faces shall be made or cut by shearing, chipping, machining or by

(g) Exposed faces of welds shall be made reasonably smooth and regular so

as to conform as closely as practicable to design requirements and shall

not be of less than the required cross section.

(h) Finished welds and adjacent parts shall be protected with clean boiled

linseed oil after all slag has been removed.

D.6.31.9 Safety Precautions

D.6.31.9.1 (a) Operators of welding and cutting equipment shall be protected from the

rays of the arc flame gloves and by helmet, hand shields, or goggles

equipped with suitable filter lenses.

(b) Closed space shall be ventilated properly while welding is being gone

(c) Welders should be provided with such staging as will enable them to

perform the welding operation. For site welding shelter should be

provided to protect welders and the parts to be welded from the

D.6.31.9.2 The Constructor shall employ a competent welding supervisor to ensure that the

standard of workmanship and the quality of materials comply with requirements

laid in these specification.

D.6.31.9.3 The Constructor shall provide free access to the representative of Engineer-in-

Charge/Consulting Engineer to the work being carried out at all reasonable times

and facilities shall be provided so that during the course of welding he may be

able to inspect any layer of weld metal. He shall be at liberty to reject any

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material that does not conform to the terms of the specifications and to require

any defective welds to be cut out and welded. The representative of the

Engineer-in-Charge/Consulting Engineer shall be notified in advance of any

welding operations.

D.6.31.9.4 Inspection and testing of welds shall be done as laid down in IS 822 and IS

D.6.31.9.5 No welder shall be employed in any position expect those who are fully qualified

to welding. Qualification for welders shall be as laid down in IS

D.6.31.10 Joints

All steel work intended to be bolted together must be in contact over the whole

surface. Joints which have to take compressive stress and the ends of all

stiffeners shall meet truly over the whole of the butting surface.

D.6.31.11 Assembling

All member shall be so arranged that they can be accurately assembled, without

being unduly packed, strained or forced into position and when built shall be true

and free from twist kinks, buckets or open joints between component pieces.

Work shall be kept properly bolted together and no drifting shall be allowed

except for the purpose of drawing assembled sections together in accuracy’s in

matching of holes may be corrected. But drifting to enlarge holes is prohibited.

Failure in any of the above respect will involve the rejection of defective

D.6.31.12 Mode of Measurement and Payment

D.6.31.12.1 Measurement of this item shall be as per IS 1200(Part VIII) - 1974 or as per its

latest revision so far as applicable.

D.6.31.12.2 The contract rate shall be suitable for unit of one metric tonne of structural steel.

D.6.32 MATERIALS : REINFORCEMENT

D.6.32.1 Specification for TMT bars reinforcement

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D.6.32.1.1 Scope of work :

The scope of work consists of providing and laying mild steel reinforcement and

TMT Fe-500 reinforcement for RCC works of various components of the

structure. This may be Tiscon or any other approved manufacturer branch and