Work related to drainage lines and other wards, areas under Deputy City Engineer-2, including cleaning, maintenance work using the required machinery.

Name of work :- bægÍtullt zu.mexe.Rsluh -2 btk ytJ<t Ftzegt <&t yLg Jtuzobtk atjeytu,vtu¤tu,<&t djeytubtk lJe meMxubuxef

z[ulus jtRl ltFJtlt,auBch/bNelntuj hevuhekd fhJtlt,<&t lJt bNelntuj cltJJtlt ftb.(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 2 of

AHMEDABAD MUNICIPAL CORPORATION

Notice inviting Tender

Competent authority on behalf of Municipal Commissioner of A.M.C. 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 bægÍtullt zu.mexe.Rsluh -2 btk ytJ<t Ftzegt <&t yLg Jtuzobtk atjeytu,vtu¤tu,<&t

djeytubtk lJe meMxubuxef z[ulus jtRl ltFJtlt,auBch/bNelntuj hevuhekd fhJtlt,<&t

lJt bNelntuj cltJJtlt ftb.(yu.yth.me.)

2 Estimated Tender Amount Rs.99,74,953.00 (exclusive of GST). GST will be paid extra by

AMC/Authority at prevailing rate to the contractor.

3 Tender fee Rs.2400.00

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

4 Time Limit 12 Months

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

Documents mentioned AS PER TENDER NOTICE INVITED

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

or equivalent register with any other state Govt. or institutions.

7 Earnest Money Deposit (Bid Rs. 99,750.00 (Demand Draft / pay order / Bank Guarantee in favour of

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

(1 % of Estimate put to 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 Tender The whole tender shall be submitted by two modes.

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

per Schedule mentioned in Notice inviting Tender.

• Tender Fee, EMD, technical bid and other relevant PQ Documents as per

check list given in tender shall be submitted physically in two copies

(Original & duplicate) in sealed envelope as per Schedule mentioned in

Notice inviting Tender.

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

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

entertained under any circumstances.

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

percentage rate on amount of BOQ online only until specified.

Price Bid shall be submitted physically duly signed & seal without

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

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

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

14 Security Deposit 5 % of Contract Value to be submitted in the form of (Demand Draft / pay

Signature of Bidder Page 3 of

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 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 LOI failing which interest @ 4% per annum will be charged by AMC.

15 Deductions from Running Bills

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

Such retention money shall be released in the final bill of the said work.

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

from each running bill.

16 Defect & Liability Period All general condition of contract of Form B1 condition of contract shall

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

18 Penalty Clauses As Per SLA Clause,attached in Tender Documents

20 Time permitted to start parts Whenever a work is allotted by Engineering staff, whether minor or major

of work part of any amount, the contractor shall be bound to start the work within

hours so intimation of work. Communication done telephonically via SMS, via

whatsapp and through letter/ E-mail shall be considered legal and binding for

the same. Failure of company to start the works in 48 hours of intimation as

above by contractor. the contractor shall be levied penalty of (1) Rs.1000/-

per day (for tender amounting upto 10 lakh). (2) Rs. 2500/- per day (for

tender amounting above 10 lakh to 30 lakh). (3) Rs. 5000/- per day (for all

tender amounting above 30 lakh). Three time failure by contractor shall

make contractor responsible to be debar unless and otherwise justified

properly in writing/binding within 15 days so flast notice of penalty. and Also

As Per SLA Clause attached in Tender Documents.

• 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.

• Obey Circular No-03 Date-13-04-2026 of City Engineer Office

Seal and Signature of the Bidder Additional City Engineer

Date: Ahmedabad Municipal Corporation

Signature of Bidder Page 4 of

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

TENDER DECLARATION FORM

Additional City Engineer

Ahmedabad Municipal Corporation,

Name of Work :- bægÍtullt zu.mexe.Rsluh -2 btk ytJ<t Ftzegt <&t yLg Jtuzobtk atjeytu,vtu¤tu,<&t djeytubtk lJe meMxubuxef z[ulus jtRl

ltFJtlt,auBch/bNelntuj hevuhekd fhJtlt,<&t lJt bNelntuj cltJJtlt ftb.(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

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

I am bound to execute the work by maintaining all Quality aspects/parameters mentioned in the tender terms and

conditions. I am also bound to submit all supporting Genuine Original documents as and when asked and if any discrepancy

found in such documents as well as in the executed Work with respect to Quality/Quantity at any stage of work or even after

completion of work, it will be solely my Responsibility. I am bound to prove originality of all documents submitted by me and if

any Documents found false/fake then Municipal Commissioner/AMC has right to take any action/penalty/punishment against

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.

Signature of Bidder Page 5 of

I/We agree to pay the Government income-Tax, GST/Sales-Tax (Central and State), Octroi duties, Royalty on material

(i.e. Aggregate, Sand etc.) And any other taxes prevailing and from time to time on such items on which the same are leviable

and the rates quoted by me/us are inclusive of the same.

Yours faithfully

Seal and Sign of Contractor

Signature of Bidder Page 6 of

INSTRUCTIONS TO BIDDERS

1. Scope of Bid

1.1 Competent authority on behalf of The Municipal Commissioner, Ahmedabad Municipal Corporation (referred to as

Employer in these documents) invites sealed bids for the construction of works (as defined in these documents and

referred to as “the work”) detailed in the table given in the Invitation for Bid (hereinafter called as IFB.) from

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

2.0 Source of Funds

Ahmedabad Municipal Corporation has arranged the fund for this project.

3.0 Eligible Bidders

3.1 The Invitation for Bids is open to all eligible bidders meeting the eligibility criteria as defined in this tender.

3.2 All bidders shall provide Qualification Information and Forms of Bid mentioned in the Clause-14. An agency that has

been engaged by the Employer to provide consulting services for the preparation or supervision of the works, and any

of its affiliates, shall not be eligible to bid.

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

debarred for specified period by AMC, Governement of Gujarat, Government of India or any other entity controlled by

it, would not be eligible to submit the Bid.

4.0 Qualification of the Bidder

4.1 Requires registration:- Register as per Notice Inviting Tender having in Road Works in PWD in Govt. R&B / CPWD /

AMC or equivalent register with any other state Govt. or institutions.

5.0 DISQUALIFICATION

Even though the bidders meet the above mentioned qualifying criteria, they are subject to be disqualified if they have,

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

of the qualification requirements; and/or

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

in completion, litigation history, or financial failures etc. or debarring from AMC work etc.

• Tampered the bid document in any manner.

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

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

• Proposal not submitted in accordance with this tender.

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

• The bidder qualifies the proposal with his own conditions.

• Proposal is received after due date and time.

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

• The envelope does not show on the outside the reference of bid and thus gets opened before the due date of

• 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.

Signature of Bidder Page 7 of

• 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

Not with standing 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

• 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.

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

• 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 any) issued.

1. Notice inviting e-Tender

2. Special conditions of Contract

3. Instructions to Bidders

4. Qualification Information

5. Conditions of Contract

6. Technical Specifications

7. Forms of Bid

8. Bill of Quantities

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

technical specifications, forms, Annexes in the bid document. Failure to comply with the requirements of bid

documents shall be at the bidder’s own risk. Bids which are not substantially responsive to the requirements of the bid

documents shall be rejected.

10.0 Amendment of Bidding Documents

10.1 Before the deadline for submission of bids, the Employer may modify the bidding documents by issuing addendum.

10.2 Any addendum thus issued shall be part of the bidding documents and shall be placed on website www.nprocure.com

The prospective bidder shall refer to website to check any addendum before 24 hours of opening of bids. AMC will not

give any advertisement for the same.

Signature of Bidder Page 8 of

10.3 To give prospective bidders reasonable time in which to take an addendum into account in preparing their bids, the

Employer may, at his desecration, extend as necessary the deadline for submission of bids.

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

through such addendum shall be applicable & bound to the bidder.

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

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 bidder”

13.0 Bid Prices

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

Quantities submitted by the bidder..

• All duties, taxes, 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.

Signature of Bidder Page 9 of

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 10 of

Signature of Bidder Page 11 of

Signature of Bidder Page 12 of

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

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

successful bidder has furnished the required security deposit and signed the agreement.

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

the required security deposit.

16.7 The Bid Security shall be forfeited,

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

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

(i) sign the Agreement; or

(ii) Furnish the required security deposit.

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

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

Ahmedabad City only.

16.9 Bank Guarantee for Earnest Money Deposit should be executed on non-judicial Stamp papers of requisite value in

accordance with the stamp Act applicable to that particular state of Indian Union, where executed.

16.10 The executing officers of the bank Guarantee for Earnest Money Bid Security shall clearly indicate in (block letters) his

name, designation, Power of Attorney No. / Signing Power No. etc.

16.11 Each page of the bank guarantee for Earnest Money Deposit shall be duly signed/initialed by the executing officers and

the last page shall be signed in full, indicating the particulars as aforesaid under the seal of the Bank.

D. SUBMISSION OF BIDS

17.0 Sealing and Marking of Bids

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

envelopes shall be sealed in an outer envelope. The Bid envelopes shall be marked as follows:-

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

Above two envelopes shall be kept in one envelope and it should be marked as “Technical Bid” and sealed. This Outer

envelope should mention the name of firm of bidder, his address, contact details & name of the work.

17.2 The inner and outer envelopes

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

Assistant Manager- 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.

Signature of Bidder Page 13 of

• 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

Any Bid received by the Employer after the deadline prescribed in NIT will be returned unopened to the bidder.

20.0 NOTIFICATION OF AWARD & SIGNING OF AGREEMENT

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

validity period by writing, facsimile or e-mail confirmed by registered letter. This letter (hereinafter and in the

Conditions of Contract called the “Letter of Acceptance” will state the sum that the Employer will pay the Contractor

in consideration of the execution, completion, and maintenance of the Works by the Contractor as prescribed by the

Contract (hereinafter and in the Contract called the “Contract Price”).

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

Deposit in accordance with the provisions of Clause.

The agreement will incorporate all correspondences between the Employer and the Successful Bidder. It will be signed

by the Employer and the Successful Bidder.

21.0 SIGNING OF CONTRACT AGREEMENT

21.1 The Employer and the successful bidder shall enter into a Contract Agreement within 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 3% 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

Signature of Bidder Page 14 of

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 & post Audit.

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 22.1 shall constitute sufficient grounds

for cancellation of the award and forfeiture of the Bid Security.

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

be enhanced accordingly. Validity of BG shall be commercial terms and conditions of the tender.

22.7 All compensation or other sums of money payable by the Contractor to the Employer under the terms of this Contract

or any other contract or on any other account whatsoever may be deducted from Security Deposit. Also in the event of

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

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

22.8 Should there arise any occasion under the Contract due to which the periods of validities of Bank Guarantees as may

have been furnished by the Contractor from time to time, are required to be extended/renewed, the Contractor shall

get the validity periods of such guarantees extended/renewed, and furnish these to the Engineer-in- Charge one

month before the expiry date of the aforesaid Guarantees originally furnished failing which the existing Bank

Guarantees shall be invoked by the Engineer – in – charge. Also in case of any deficit in securities on any account as

might occur or is noticed, the Contractor shall forthwith recoup/replace the same with acceptable Security Deposit.

22.9 The Bank Guarantee shall be extended within the expiry dates wherever activities as per contract are not completed in

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

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

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

Signature of Bidder Page 15 of

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

 A consistent history of arbitration awards? Judgments against the applicants or any partner of a joint venture may

result in disqualification for proposed work.

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

bidder shall be disqualified for the proposed work and other appropriate actions shall be taken against the bidder.

Seal and Signature of the Bidder Additional City Engineer

Date: Ahmedabad Municipal Corporation

Signature of Bidder Page 16 of

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

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 Schedule.

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 Laws.

5.1 The Contractor shall have full regard throughout execution, completion and defects liability period to following safety

aspects and shall take all necessary steps to ensure that danger to safety is avoided all the time in respect of,

Safety of the works

• Safety of the Contractor’s employees and all the persons directly or indirectly engaged by him for the works

• Safety of all the employees including persons working on other contracts of Employer at the same site of the

Employer and Engineers employees engaged at work site.

• Any authorized third party persons on the site.

• Contractor’s plant and equipment

Signature of Bidder Page 17 of

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 scaffolding.

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 Engineer.

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

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

responsible for any pilferage, theft, damage, penalty etc. in this regard. The Contractor shall indemnify the Owner

against any claim arising out of pilferage / theft, damage, penalty etc. whatsoever on this account.

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

equipments shall be provided to them by the Contractor at his own cost and used at site.

6.0 Contractor to keep site clean:

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

temporary works no longer required will be removed from site immediately.

7.0 Clearance of site on completion:

The Contractor shall clear away and remove all Contractors equipment, surplus materials, rubbish, temporary works of

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.

Signature of Bidder Page 18 of

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

thereof that may, in his opinion, be necessary and for that purpose, or if for any other reason it shall, in his opinion, be

appropriate, he shall have the authority to instruct the Contractor to do and the Contractor shall do any of the

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

 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

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

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

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

Signature of Bidder Page 19 of

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

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 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 accounts.

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 welfare fund.

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

Signature of Bidder Page 20 of

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 28 days after having received.

4. Abandons the works or otherwise plainly demonstrates the intention not to continue performance of his

obligation under the contract.

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

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

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

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

(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 21 of

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

(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

Signature of Bidder Page 22 of

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 33 in accordance with the

instructions and the requirement of the Engineer-in-charge in case where there are no specifications.

(ix) The awards declared by the arbitrator shall be speaking award giving reasons and calculations to every item of

claims. The decision will have to be implemented by all the concerned.

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

Law. It shall be within the jurisdiction where the site of work is situated.

The reference to arbitration proceeding under this clause shall not:

i) Entitle the contractor to stop the Affect the right of the Engineer-in-charge under clause 5 to take possession of all or

any tools, plants, materials and stores in or upon the works of site thereof belonging to the contractor or procured

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

ii) Preclude the Engineer-in-charge from utilizing the materials purchased by the contractor in any work or from

removing such materials to other places, during the period the work is stopped or suspended in pursuance, of notice

given to the contractor under clause

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

or as the case may be, of clause

23.0 Drawings and Photographs of the Works

23.1 The contractor shall do photography/ videography of the site as and when asked by AMC. No separate payment will be

made to the contractor for this. . The contractor shall have to submit the same in hard copy as well as soft copy as and

when demanded by the AMC.

23.2 No photograph of the works or any part thereof or plant employed thereon, except those permitted under clause 59.1,

shall be taken, or permitted to be taken by the Contractor or by any of his employees or any employees of his sub-

Contractors without the prior approval of the Engineer in writing. No photographs/ videography shall be published or

otherwise circulated without the approval of the Engineer in writing.

Seal and Signature of the Bidder Additional City Engineer

Date: Ahmedabad Municipal Corporation

Signature of Bidder Page 23 of

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Signature of Bidder Page 24 of

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xuLzhbt <u btxu htFJtbtk ytJuje søgtbtk mne/mneytu Wvh ftuR mtûteyu mtF fhe l ntug.

f:- Nh<e xuLzh MJefthJtbtk ytJNu lne.

z:- xuLzh MJefthJw, hœ 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 œtJtuu fhe

NfNu lrn fu ftgœtfeg ftgoJtne yt ykdu &R NfNu lrn. xuLzh bkswh &gtltu y&o ftb ytve œuJtLþk Au <uJtu &R NfNu

lrn.Nh<e xuLzh MJefthJtbtk ytJNu lne.

(9) rJmkdr< ylu rnmtc stud:

nt& ^hJtlt ftbtule ctc< œNtoJ<t CtJ vºtfbtklt sÚ&t ylu hfble ftuRvK Cwjawf leault rlgbtu

ylwmth mhCh fhJtbtk ytJNu.

(1) xuLzh Chlthu œhuf Ftltbtk sKtJuj Nçœtu ylu ytkfzt Jåau ftuR ymkdr<lt fumbtk Nçœtuubtk sKtJuj hfb btLg

htFJtbtk ytJNu.

(2) yufb œh ylu sÚ&tlt Ftuxt dwKtfthlt fthKu ftble ctc<tu œNtoJ<e CtJ vºtflt Ftltbtk&e hfbbtk Cwj sKtg <tu

yufb œh btLg htFJtbkt ytJNu ylu œhlt yt^thu dwKtfth mw^thJtbkt ytJNu.

(3) yufblt Ftltbtk&e <ubs ytd¤ Fuka<t mhJt¤tle <btb Cwjtu mw^thJtbkt ytJNu.

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

Signature of Bidder Page 25 of

(10) y:- ftbltu «tud{um mbgbgtoœt bwsc fhJtltu hnuNu. yt mbgbgotœt 10 jtF mw^elt ftb btxu yuj.ytu.ytR. ytÃgt

<theF&e 10 rœJm <&t 10 jtF &e Wvhltk ftb btxu yuj.ytu.ytR. ytÃg <theF&e 15 rœJm&e NY &guj dKJtbt

ytJNu. <&t <u œhBgtl ftble 3% 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 œhBgtl su ftuR VuhVth &Nu <ultu J^thtu awfJJtbtk ytJNu lrnk.

c:- mûtb m•tt îtht xuLzhle bkswheltu XhtJ vtzgt ctœ (LOI) ytvJtbtk ytJNu ðgth ctœ rœl - 10 btk rm¾gtuhexe

zevtuÍex sbt fhtJJtle hnuNu. rm¾gtuhexe zevtuÍex btuze ChJtlt rfMmtbtk Bgwrl.ftuvtuohuNlbtk «Joðbtl rlgb

ylwmth ftgoJtne fhJtbtk ytJNu.

f:- bkswh &guj xuLzhle mbgbgtoœtbtk ftbdehe vqKo l &tg <tu bubtuhuLzb (ltuxem RLJtRxuz xuLzh) btk sKtJuj «btKu

bkswh &guj mbgbgtoœt ctœlt FhuFh ctfe ftble hfblt bn•tb 10% juFu (jefJezexe zubuSm) vulÕxe Jmwj

z:- yu.yth.me. xuLzhbtk bkswh &guj sw>t sw>t yk>ts vifelt ftbtu Jfo ytuzoh b¤u&e NY fhJtlt hnuNu.

E:- yu.yth.me. xuLzhbtk yjd yjd ykkœtsle bkkswhe bégu&e btºt rmJej ftbdehelt ftb «btKu yk>ts hfb Bþsc

mbgbgto>t dKtNu.

(1) Yt.1,00,000.00 Mþ^elt ftbtu btxu 02 btm

(h) Yt.3,00,000.00 Mþ^elt ftbtu btxu 03 btm

(3) Yt.5,00,000.00 Mþ^elt ftbtu btxu 04 btm

(4) Yt.5,00,000.00 &e Wvhlt ftbtu btxu 06 btm

(11) y:- awfJKe:-

xuLzh Chlthu yu Jt< mbS juJtle hnuNu fu <uKu xtkfujt œh vwhtk &gujt ftb btxult Au ylu <ubtk bswhe, vtjF, ÃjtLx,

œuFhuF, 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 œh fh<t J^thtle ftuR awfJKe ykdult

<ublt ftuR œtJt ægtlbtk juJtNu lnek ylu xuLzh Chlth Ftuxe hswyt<lu fthKu y&Jt ftuR Ôgrf<yu (vAe<u ctk^ftb

rJCtdltu fboathe ntug fu l ntug) <ublu ytvuje btne<elu yt^thu vtA¤&e ftuR œtJt hsw fhJt nfœth hnuNu lnek.

<ublw xuLzh ChJt <&t <ubtk swœt swœt CtJ ylu œh 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 sJtcœthebtk&e Axfe NfNu lnek.

mœh ftbbtk ftuR vK ò<lt ctk^ftblt bxehegj Wvh CtJ J^thtu ytvJtbtk ytJNu lrnk.

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 œhuf 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 ftgœt bwsc su ftuR hfble fvt< fhJtle &Nu <u bwsc ftuLx[tfxhlt

cejbtk&e fvt< fhJtbt ytJNu.

Signature of Bidder Page 26 of

(12) yu:- fhth mkc^e œM<tJustu fhthlt ydðglt Ctd dKtNu ylu <u mD¤t mne<lt fhth mbd{ ftblu jtdw vzNu.

ce:- xuLzhbtk œNtoJuj ftb mkck^e œM<tJusbtk œNtoJuj rJd<btk rJmkd<<tlt rfMmtbtk leau œNotJuj ¢btlwmth œM<tJusbtk

œNtoJuj rJd< d{tng htFJtbkt ytJNu.fhth mkc^e œM<tJustu fhthlt ydðglt Ctd dKtNu ylu <u mD¤t mne<lt

fhth mbd{ ftblu jtdw vzNu.

(yu) yufb ylu fœ:-

(2) xuLzh VtuboLþk CtJvºtf

(3) MvuNeVefuNl

z[tu#dbtk fœ, ytfth, ytkfzt fœta Ftuxt ntug <tu btvujt fœ, 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

(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.

(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

sJtcœthe (òlbtj) ftuLx[tfxhle vtu<tle hnuNu. mtRx Wvh ftb œhBgtl bswhtu fu sl<tlt ftuR btKmlt òlbtj

lu lwfNtl &tg <ule sJtcœthe ftuLx[tfxhle hnuNu. vtujem Vrhgtœ &tg <tu <ule sJtc>the vK ftuLxtfxhle hnuNu.

CuFz Dme l vzu <ule sJtc>the vK vtujem Vrhgtœbt ftuLx[tfxhle hnuNu. CuFz Dme l vzu <u btxu mjtb<elt

vdjt (suJt fu œtuhzwk ctk^e bswh Ftztbtk W<thJt, mtuhekd ylu Mx[xekd fhJt rJduhu) je^t Jdh bsqhlu Ftztbtk W<thNu

<tu ftuLx[tfxh s vtujem Vrhgtœbt sJtcœth hnuNu ylu Bgwrl.ftuvtuohuNlltu ftuRvK MxtV ytlt btxu sJtcœth hnuNu

lrn. ytxjwk mbSlu s xuLzh ChJwk. œhuf ftb fh<t bswhtultu rJbtu vK W<thujtu ntuJtu stuRyu.

(17) bxehegÕm fu ceò xuMxed hevtuxo ftuLx[tfxhu vtu<tlt Fauo ftuvtuohuNl sKtJu <u søgtyu fhtJJtlt hnuNu. bxehegÕm

jtJJt fu jR sJtltu mkvwKo Fao ftuLx[tfxhu CtudJJtltu hnuNu.<&t atjw ftb œhBgtl yuLSlegh Rlatso îtht

ybœtJtœ Bgwrlmevj ftuvtuohuNlle buxjzuvtu jucbtk xuMxekd fhtJJt sKtJJtbtk ytJu <tu ftuLx[t¾xh îtht <ulw vtjl

(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.

Signature of Bidder Page 27 of

(19) mtRx vh jtJJtbtk ytJuj btj mtbtl hesufx fhJtbt ytJu <tu <whk< rœl 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 ftgœtlw 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 ftgœtfeg jexeduNl ybœJtœ 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 sJtcœthe ftuLx[tfxhle hnuNu.

(24) ftuLx[tfxh îtht xuLzhbt œNtoJuj 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.

(26) atjw ftb œhBgtl «tuxufNlle mkvwKo sJtcœthe ftuLx[tfxhle hnuNu. subtk vevzt, œtuhzt Cgmwaf ctuzo, ÃjtMxef vèe,

rJ. ftuLx[tfxhu jtJJtlwk ylu mtaJJtlwk hnuNu. ylu ftuRvK yfMbt< &Nu <tu <ule mkvwKo sJtc>the ftuLx[tfxhle

(27) M&¤ Wvh atjw ftbdehe œhBgtl 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 œhhtus 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•tt yuze.mexe yuLSlehgh©elu hnuNu.

(29) œhuf ytRxblt MvuNeVefuNl ybœtJtœ 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 œhhtus 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 œhBgtl 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.

Signature of Bidder Page 28 of

(34) mœh xuLzhle ytRxbtult CtJtu ltKt Ft<t lt mhfgwjh lk.38, <t.21/11/22 <&t mûtb m•ttle b¤uj bkswhe bwsc

GST rmJtg dKºtebtk juJtbt ytJuj <&t «Jo<btl rlgb bwsc GST awfJJt vtºt &Nu su&e <btb cezomu <u bwsc

dK<he fhe xuLzhtu ChJtlt hnuNu.

(35) mœh xuLzh yk<od<lt ftb mkjøl y.Bgw.ftu.btk vJo<btl <btb rlgbtu/mhfgwjhtu jtdw vzNu <ubs JF<tu JF< &lth

mw^thtytu vK jtdw vzNu. sule ltuk^ jR xuLzhtu ChJtlt hnuNu.

(36) mœh xuLzh yu.yth.me. «fthlw Au ytvlu mtukvJtbtkk yuxju fu ytv îtht ChJtbtkk ytJuj ftbdehelt sÚ&t bwsc mbg

bgtoœt lffe fhe su <u mûtbm<tle yjd yjd ykkœtsle bkkswhe bégu&e Jfo ytuzoh ytvJtbtkk ytJNu ylu mbg

bgtoœtbtkk ftbdehe vqKo fhJtlw awM< vKu vtjl fhJtlw hunNu .

(37) mœhnw ftbbtkk Jtuzobtkk sYhegt< bwsc ytuAtbtkk ytuAe xuLzhle Nh< bwsc bkkswh &lth xuLzh vife yjd yjd

ykkœtsle bkkswhe bu¤JJtbtkk ytJ<e ntuR, ytuAtbtkk ytuAe yuf mt&u œN søgtyu sYhegt< bwsc ftbdehe NY

fhJtle Nh<u ylu <u «btKu bulvtJh, bNelhe, bxehegÕm <ubs ltkkKtfeg studJtRle vwh<t «btKbtkk ÔgJM&t fhe

su <u xuLzhhu xuLzh Cgto vqJuo ytdtu<Y ytgtuslle <igthe mt&u ftbdehe fhJtle &tg Au.

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 œM<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

TECHNICAL SPECIFICATIONS:

Name of work:- bægÍtullt zu.mexe.Rsluh -2 btk ytJ<t Ftzegt <&t yLg Jtuzobtk atjeytu,vtu¤tu,<&t djeytubtk lJe meMxubuxef z[ulus

jtRl ltFJtlt,auBch/bNelntuj hevuhekd fhJtlt,<&t lJt bNelntuj cltJJtlt ftb.(yu.yth.me.)

Item No : 01 Excavation for pipe line trenches for water supply, sewerage line, manhole etc. all with

shoring and struting if required as per required gradient and line including safety provisions

using site rails and stacking excavated stuff including up to all required lead cleaning the site

etc. complete for all lifts and strata as specified. In all sorts of soil and soft murrum.

0 to 1.5 meter depth.

1.5 to 3 meter depth.

3 to 4.50 meter depth.

Any soil which generally yields to the application of ackaxes and shoves, phawaras rakes or

any such ordinary excavating implement or organic soil, gravel silt, sand turfloam, clay, peat etc., fall

under this category.

Clearing the site :

The site on which the structure is to be built shall be cleared and all obstructions, loose

stone, materials and rubbish of all kind, bush, wood and trees shall be removed as directed. The

materials so obtained shall be property of the Government and be conveyed and stacked as directed.

within 50 M. lead. The roots of the trees coming in the sides shall be cut and coated with a hot

The rate of site clearance is deemed to be included in the rate of earth work for which no

extra will be paid.

After clearing the site, the center lines will be given by the Engineer-in-charge. The

contractor shall assume full responsibility for alignment, elevation and dimension of each and all

parts of the work. Contractor shall supply laborers, materials, etc. required for setting out the

reference marks and bench marks and shall maintain them as long as required and directed.

The excavation in foundation shall be carried out in true line and level and shall have the

width and depth as shown in the drawings or as directed. The contractor shall do the necessary

shoring and shutting or providing necessary slopes to a safe angle, at his own-cost. The payment for

such precautionary measures shall be paid separately if not specified. The bottom of the excavated

area shall be 1 evened both longitudinally and transversely. as directed by removing and watering as

required. No earth filling will be allowed for bringing it to level, if mistake or any other reason

excavation is made. deeper or wider that shown on the plan or directed. The extra depth or width

shall be made up with concrete of same proportion as specified for the foundation concrete at the

cost of the contractor. The excavation up to 1.5 m. depth shall be measured under this item.

Disposal of the excavated stud :

The excavated stuff of the selected type shall be used in filling the trenches and plinth or

leveling the ground in layer including ramming and watering etc.

Signature of Bidder Page 30 of

The balance of the excavated quantity shall be removed by the contractor from the site of

work to a place as directed with lead upped 50 M. and all lift.

Mode of measurement and payment :

The measurement of excavation in trenches for foundation shall be made according to the

sections of trenches shown on the drawing or as per sections given by the Engineer-in-charge. No

payment shall be made for surplus excavation made in excess of above requirements or due to

slopping and sloping back as found necessary on account of conditions of soil , and requirements of

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

Item No. 02 : Extra rate over item of excavation of earth if excavation is to be done in wet condition

without resorting to pumping but incl. of bailing out of water.

Extra rate over item of excavation of earth if excavation is to be done in wet condition without

resorting to pumping but incl. of bailing out of water.

Measurement shall be on per Cmt.

Item No : 03 Extra rate over item of excavation of earth for excavation of asphalt pavement / RCC of

thickness up to 0.20 meter including demolishing the asphalt carpet, metal, soiling/cutting

Reinforcement etc.comp. with stacking the material as directed.

up to 0.20 meter thickness (By Manual)

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

operator, fuel, & transportation etc complete.

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

operator, fuel, & transportation etc complete.

Under this item contractor shall demolish existing asphalt or WBM pavement met with

during laying of RCC pipe.

Only area of pavement intercepted in pipe laying shall be demolished. If excess area is

demolished same shall be reinstated by the contractor.

Demolished material like asphalt pavement lump and metal shall be stacked separately as

directed by the Engineer, so that it can be reused in doing the pavement on completion of

laying the pipe.

Work done to the extent of requirement for laying of pipeline and as per specifications shall

be measured in sq.m. and paid at the tender rate.

Item No : 04 Refilling in pipe line trenches ramming and watering, Consolidating, disposal of surplus stuff

as directed within 3 KM Area

As per GWSSB SOR 2022-23; Item No.14.1.

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 for which separate payment will be paid under the corresponding item.

Signature of Bidder Page 31 of

No earth fill shall commence until surface water discharges and streams have been properly

intercepted or otherwise dealt with as directed by Engineer.

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.

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

FILLING IN PITS AND TRENCHES AROUND FOUNDATIONS OF STRUCTURES, WALLS ETC.

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 leveled to proper profile

as directed by Engineer or indicated on the drawing.

FILLING IN TRENCHES

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.

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.

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.

Signature of Bidder Page 32 of

Filling of the trenches shall be carried simultaneously on both sides of the pipe to avoid unequal

pressure on the pipe.

GENERAL SITE GRADING

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 elsewhere unless otherwise indicated below.

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

leveled uniformly and compacted as indicated in before the next layer is deposited.

To ensure that the fill has been compacted as specified, field and laboratory tests shall be carried out

by Contractor at his cost.

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 well.

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

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

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.

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

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

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.

Signature of Bidder Page 33 of

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.

Measurement and Payment

Backfilling as per specifications on the sides of foundations of columns, footings, structures, walls,

tanks, rafts, trenches etc. with excavated material shall be done. As a rule, material to be backfilled

shall stacked temporarily within the basic lead of 90 meters unless otherwise directed by the

Engineer. If Engineer directs / permits a lead of over 90 meters for such material, the conveyance of

the material for the extra distance over the basic lead of 90 meters for backfilling will be paid for.

Actual quantities of consolidated back filing shall be measured and paid in cubic meters.

Penalty for improper watering and compaction will be Rs. 350/Tanker required and rent for roller @

Rs. 20 per sq.m.

In case the watering and compaction of the backfilled material is not as per the specifications, AMC

will carry out the same through own resources. A rate of Rs. 350 per water tanker and Rs. 20 per

sq.m. for rolling and compacting will be recovered from the contractor.

The M/s shall be on CMT basis.

Item No : 05 Conveyance of lime murrum building rubbish earth manure or sludge & execavated rockand

rubbish [Lime murrum building rubbish]. Up to 5.0 Km. lead

(Building SOR 2023-24 Statement No.5 Item No. 030201A1 ; Page no.6)

Disposal of earth, lime, murrum, building rubbish, manure, garbage, sludge, excavated rock, fly ash,

aggregates of any kind is subject to the following :

Unsuitable materials obtained from clearing site and excavation shall be

disposed off within a lead of 50 meters as directed. useful materials obtained from clearing site and

excavation shall be stacked within a lead of 50 mt. beyond the work area as directed. Materials

suitable for back filling shall be stacked at convenient places within a lead of 50 mt. from the

structure for reuse. Useful stones from rock excavation shall be stacked neatly within a lead of 50 M.

and will be allowed to be used by the contractor on payment at rates laid down in the contract or if

not so aid down, at schedule of rates of the Division or at a mutually agreed rates if there are no such

rates in the Schedule of rates.

If surplus materials are required to be conveyed beyond 50 M. conveyance will be paid for

under a separate item.

The M/s shall be on CMT basis.

Item No : 06 & 07 Providing and supplying ISI marked only Standard length Stoneware pipes in standard

lengths of following class and diameter including all taxes, insurance, transportation, freight

charges, octroi, inspection charges, loading, unloading, conveyance to departmental stores,

Signature of Bidder Page 34 of

(IS - 651 / 1989) (Based on GWSSB SOR 2022-23, Item No. 11.0 P-17)

100mm, 150mm,230mm AA Class

The pipes shall be of best quality stone ware pipes. The pipes shall be of approved quality and make

and shall be brought on site after approval. (The pipes shall be laid in grade as per instruction)

contractor shall have introduce bills for standard pipes.The joints shall be done in cement prop. (1 :

1) (1 part cement : 1 part sand) using spun yarn dispend in hot asphalt and caulking tools. The

hydraulic pressured test shall be given be the contractor for testing pipes and jointing. No. trenches

shall be filed without the approval of the Engineer in charge. The rate of the pipes work are inclusive

of excavation and refilling. The excavation etc. shall be done as follows :

The sewet trench shall be excavated to the alignment and gradient shown on the plan and section. In

all storts soil including oil masonary asphalt roads and wet. excavation . The sewer excavation shall

be commenced at the down stream end of the sewer and be continued upto thegradient as directed.

The trench shall not open more than 60 meters in advace of the completed sewer only when directed

by the Engineer in charge looking to the progress of the work in obtaining the formation of the

bottom of the trenches the usual methods of suing sight rails and bonning roads shall be adopted

during the whole of the process. The center line of uniform height shall be carried clearly on each

rail. The depth of the excavation and invert of the sewer shall be checked by means of bonning road

of appropriate length and also straight edge. The bed of the trench be shall well remmed before

starting laying of sewer lines and cement concrete and masonary work. Where trenches are deep in

bad grounds the sides shall be supported by suitable timbering of shorting work looking to the nature

of soil near big or important structures, the sides of the trenches shall be closely and securely

timbered. If any settlement of the building is anticipated the timbering shall be left in the ground.

The various materials excavated shall be separately stacked so that in refilling the may be relaid on

the same order as before and least possible damage shall be done carpet on the public roads and

private properties. Surface covering consisting of asphalt carpet shall be kept on one side and

preserved for reinstatement. The excavated earth shall not heaped near the renchers so as to

caused unnecessary obstruction along the pulling inspection, trenches etc. shall be tunneled under

only as necessary. The side of the trenches shall be nearly vertical and plumb & red light shall be

placed at each end at intervals as instructed and further protested by rope fence. Necessary caution

boards shall also be erected and diaced as directed by the Engineer in charge. Wherever possible

material excavated from the trenches of whatever kind shall not placed nearer than 3 meters from

the outer edge of the excavated trench. The utmost shall have to be taken in refilling the trenches so

that no damage may be done no sewer no lump shall be allowed to be put around the sewer. The

remming of the filling shall be done and well watered. The surplus earth shall be removed directed

within 30 meters lead. The measurement of the work shall be exact length and width of the trench as

specified or as per City Engineer instruction and depth shall be measured vertical as per section upto

invert or the pipe lind The City Engineer reserves the right of extra excavation on either side if

considers necessary for the safely of the work. The bottom and sides of the trench shall be dressed

in level and plumb in all directions before any concrete in India. In case the excavation is done

deeper than required no filling shall be allowed to bring the formation to proper level but contractor

shall have to lay cement or lime be concrete of filling or other acceptable materials as directed by

Signature of Bidder Page 35 of

C.E. at contractor won cost so as to come to proper information, in case bas formation are met with

the work shall have be done as per instruction of C.E. necessary arrangements for watering trenches

must be provided be contractor and without proper watering trenches will not be allowed to be tilled

to further. Contractor shall have to make arrangement for acees to invert of the sewer and for

inspection of the ware as ordered by the Engineer. If is required to shired or after the alignment

section of diameter of the pip the contractor shall carry or altered the alignment section or diameter

of the pipe the contractor shall carry out the altered work at the rates quoted by him for the original

work for items and contractor shall not claim any expenses due to the changes made. In case no

work shall be done at night or on Sundays & other holidays and during the recess time except in and

other holiday the case of bad grounds such as running sand where the work must be executed

various day night without intruption when so ordered by the Engineer. All existing water pipe storm

drains sewer line railway tract, electric cables etc. which do not in the opinion of Engineer required

to be charged in location shall be supported and protected from injury by the contractor. The

contractor shall be liable to pay all damages to water pipe, drains electric and telephone cables and

to private property during the execution of this contract and the same will be recovered from the

running bills or the deposit of work whenever it becomes necessary in the opinion of the Engineer in

charge location of any existing sewers drains etc. not otherwise from in these specification the

contractor shall do the work of making such change and the work shall be paid for as extra work. All

places of public utility etc. shall be kept accessible for use. No extra payment shall be made for land

sides and side slopes done without prior approval of the Engineer in charge. Wherever natural soil

commends winder excavation the mentioned above the same shall be given after approved C.E. The

rate for excavation for easy jointing and caulking nothing extra shall be paid for this.

Refilling of trenches shall be done only after the grade of line and hydraulic test practicable of the

lines are checked and approved of and order given by the Engineer in charge. The refilling shall be

accompanied by through watering the layers of 0.50 metrs. Further refilling shall be done there after

and process should be repeated till trenches are completely refilled. Temping and ramming with

rammers shall have to be done at all place of important work where ordered by Engineer in charge.

After the trench is give the trenches shall have to be refilled within 4 days with complete watering. If

the contractor fails to do watering satisfactory corporation shall get it done at the risk and cost of the

contractor with or without giving any notice and the expenses incurred in doing so recovered from

the contactor either in cost or from his payment through bills.

The rate shall be for a unit of one Rmt basis.

Item No : 07 R. C. C. PIPE (Horizontal Cast) Providing and supplying ISI Standard R.C.C. pipes(of Sulphate

Resisting Cement) in standard lengths of following class and diameter suitable for either collar

joints or rubber ring joints instuction given as per Engineer incharge including all taxes, insurance,

transportation, freight charges, octroi, inspection charges, loading, unloading, conveyance to

departmental stores, stacking etc Note : One collar should be supplied with each full length plain

ended RCC pipe, cost included in rates below. One rubber ring should be supplied with each full

length socketed pipe, cost included in rates below.(Class NP3 Test Pressure 0.7 Kg/sq.cm). Rate

also Include RCC Collars for RCC pipes including all taxes, carting, loading,unloading, etc complete.

(GWSSB SOR 2022-23 Item No. 10, Page No. 13) R. C. C. PIPE (Horizontal Cast) Providing and

supplying ISI Standard R.C.C. pipes(of Sulphate Resisting Cement) in standard lengths of following

Signature of Bidder Page 36 of

class and diameter suitable for either collar joints or rubber ring joints instuction given as per

Engineer incharge including all taxes, insurance, transportation, freight charges, octroi, inspection

charges, loading, unloading, conveyance to departmental stores, stacking etc Note : One collar

should be supplied with each full length plain ended RCC pipe, cost included in rates below. One

rubber ring should be supplied with each full length socketed pipe, cost included in rates

below.(Class NP3 Test Pressure 0.7 Kg/sq.cm). Rate also Include RCC Collars for RCC pipes including

all taxes, carting, loading,unloading, etc complete.

(GWSSB SOR 2022-23 Item No. 10, Page No. 13)

300 mm internal diameter (GWSSB SOR 2022-23 Item No. 10.1.D,

450 mm internal diameter (GWSSB SOR 2022-23 Item No. 10.1.D,

750 mm internal diameter (GWSSB SOR 2022-23 Item No. 10.1.D,

Class NP4 Test Pressure 0.7 Kg/Sq.Cm.

600 mm internal diameter (GWSSB SOR 2022-23 Item No. 10.1.E,

900 mm internal diameter (GWSSB SOR 2022-23 Item No. 10.1.E,

1200 mm internal diameter (GWSSB SOR 2022-23 Item No. 10.1.E,

This specification covers requirements for manufacturing, testing, supplying, jointing and testing at

work sites of Reinforced Cement Concrete (RCC) pipes, of both pressure and not pressure varieties

used for pumping mains and sewers. Laying of pipes and fittings/specials is covered in Part: 2. The

two parts are complementary and are to be read together for a correct interpretation of the

provisions of this specification.

APPLICABLE CODES

The manufacturing, testing, supplying. Jointing and testing at work sites of RCC pipes shall comply

with all currently applicable statutes, regulations, standards and codes. In particular, the following

standards, unless otherwise specified herein, shall be referred. In all cases, the latest revision of the

codes shall be referred to. If the requirements of this specification conflict with the requirements of

thecodes and standards, this specification shall govern.

a.) IS : 458 - Specification for pre-cast concrete pipes (with and without reinforcement) b.) IS : 3597 -

Method of tests for concrete pipes.

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

CODE OF PRACTICE

a.) IS : 456 - Code of practice for plain and reinforced concrete.b.) IS : 783 - Code of practice for laying

of concrete pipes.

Signature of Bidder Page 37 of

Design of RCC pipes shall be in accordance with the relevant clauses of IS :

The details of reinforcement shall be as per IS :

D7.5.3 The ends of pipes shall be in accordance with relevant clauses of IS :

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

pipes are accurate within the limits specified in relevant clause of IS: 458.The surfaces and edges of the

shall be well defined and true, and their ends shall be square with the longitudinal axis. The ends ofthe

pipes shall be further reinforced by an extra ring of reinforcement to avoid breakage duringtransportation.

The R.C.C. pipes and collars/ rubber rings shall be systematically checked for any

manufacturing defects by experienced supervisors so as to maintain a high standard of quality.

Owner/Engineer/its representative or consultants also shall at all reasonable times have

free access to the place where the pipes and collars/ rubber rings are manufactured for the purpose of

examining and testing the pipes and collars/ rubber rings and of witnessing the test and manufacturing.

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

performed by the supplier/contractor at his own cost and in presence of Owner /Engineer if desired. For

this, sufficient notice before testing of the pipes and fittings shall be given to Owner/Engineer in writing.

1.5.1.5 If test is found unsatisfactory, Owner/Engineer may reject any or all pipes of that lot. The decision

ofOwner/Engineer in this matter shall be final and binding on Contractor and not subjected to any

arbitration or appeal.

Cement used for the manufacture of RCC pipes and collars shall conform to relevant IS codes. ThePipes shall

be manufactured from Ordinary Portland Cement.

Aggregates used for the manufacture of RCC pipes and collars shall confirm to IS : 383. The

size of aggregate should not exceed one-third the thickness of the pipe or 20 mm, whichever issmaller.

MIXING AND CURING WATER

Water shall be clean, colorless and free form objectionable quantities of organic matter, alkali, acid, salts or

other impurities that might reduce the strength, durability or other desirable qualities of concrete and

Reinforcement used for the manufacture of the RCC pipes and collars shall be mild steel Grade I or medium

tensile steel bars conforming to IS : 432 (Part-1) or hard-drawn steel wire conforming to IS : 432 (Part-2).

Reinforcement cages for pipes and collars shall be as per relevant requirements of IS :458.

Signature of Bidder Page 38 of

Ahmedabad Municipal Corporation

Concrete used for the manufacture of RCC pipes and collars shall conform to IS : 456. The minimum

cement content and minimum compressive strength of concrete shall be as per relevant requirements of IS:

458. Compressive strength tests shall be conducted on 15 cm cubes or standard size cylinders in

accordance with the relevant requirements of IS: 456 and IS:

Pipes manufactured in compliance with IS : 458 shall be either water cured or steam curedin

accordance with the relevant requirements of IS :

The internal diameter, wall thickness and length of barrel and collar of pipes, reinforcement

(longitudinal and spiral), type of ends and minimum clear cover to reinforcement and strength test

requirements shall be as per the relevant clauses/ tables of IS: 458for different classes of pipes.

The tolerances regarding overall length, internal diameter of pipes or sockets and barrel

wall thickness shall be as per relevant clause of IS:

WORKMANSHIP AND FINISH

Pipes shall be straight and free from cracks except that craze cracks may be permitted. The

ends of the pipes shall be square with their longitudinal axis so that when placed in a straight line in the

trench no opening between ends in contact shall exceed 3mm in pipes up to 600 mm diameter (inclusive),

and 6 mm in pipes larger than 600 mm diameter. D.7.6.8.2 The outside and inside surfaces of the pipes shall

be smooth, dense and hard and shall not be coated

with cement wash or other preparation unless otherwise agreed to between Owner/ Engineer and the

manufacturer or supplier.

D.7.6.8..3 The pipes shall be free from defects resulting from imperfect grading of the aggregate, mixing or

D.7.6.8..4 The pipes shall be free from local dents or bulges greater than 3 mm in depth and extending over a

length in any direction greater than twice the thickness of barrel.

D.7.6.8.5 The deviation from straight in any pipe throughout its effective length, tested by means of a rigid

straight edge parallel to the longitudinal axis of the pipe shall not exceed, for all diameters 3mm for every

All Pipes for testing purposes shall be selected at random from the offered stock of the manufacturer

and shall be such as would not otherwise be rejected under the criteria of tolerances asmentioned in

During manufacture, tests on concrete shall be carried out as per IS:

456. The manufacturershall

supply, when required to do so by Owner/Engineer the results of compressive test of concrete cylinders or

cubes made from the concrete used for the pipes. Every pressure pipe shall be tested bythe manufacturer for

the hydrostatic test pressure.

D.7.7..3 The specimen of Pipes for the following tests shall be selected in accordance with Clause 9.1of IS:

and tests in accordance with the methods described in IS :

i.) Hydrostatic test

ii.) Three edge bearing test( Including ultimate strength test )

iii.) Absorption test

Note : Three edge bearing load to produce 0.25 mm crack on bottom of pipes shall be as specified in

SAMPLING AND INSPECTION

any consignment, all the pipes of same class and size and

Signature of Bidder Page 1 of

Ahmedabad Municipal Corporation

manufactured under similar conditions of production shall be

grouped together to constitute a lot .The conformity of a lot to the

requirements of this specification shall be ascertained on the basis of

tests on pipes selected from it.

he number of pipes to be selected from the lot for testing shall be in

accordance with Table 15 of IS:

pes shall be selected at random from lot size. In order to ensure

randomness, all the pipes in the lot may be arranged in a serial order

and starting from any pipe.

l pipes selected as per clause 9.2 shall be inspected for dimensional

requirements, finish and

deviation from straight.

he number of pipes to be tested for tests under clause 9.2 shall be in

accordance with column 4 of Table 15 of IS: 458. These pipes shall be

selected from pipes that have satisfied the requirements

mentioned in Clause 9.1.1.of IS:458.

lot shall be considered as conforming to the requirements of IS: 458 if

the following conditions are satisfied. (a) The number of defective

pipes (those not satisfying one or more of the requirements for

dimensions. finish and deviation from straight) shall not be more

than the permissible number given in column 3 of Table 15 of IS:

(b) All the pipes tested for various tests as per Clause 7,8 & 9.1.1 shall satisfy corresponding requirements of

the tests. (c) In case the number of pipes not satisfying requirements of any one or more tests, two further

samples of same size shall be selected and tested for the test or tests in which failure has occurred, all these

pipes shall satisfy the corresponding requirements of the test.

The following information shall be clearly marked on each pipe :

(a) Internal diameter of pipe

(b) Class of pipe

(c) Date of manufacturer

(d) Pipe numbers and

(e) Name of manufacturer or his registered trade-mark or both.

(f) Any other information suggested by Engineer-in-charge.

Signature of Bidder Page 2 of

Ahmedabad Municipal Corporation

Jointing of RCC pipes shall be done as per the requirements of following specifications and as per the relevant

IS. The type of joints shall be collar joint. After jointing, extraneous material, if any, shall be removed from the

inside of the pipe and the newly made joints shall be thoroughly cured.

D.7.10.1.2 COLLAR JOINT (RIGID)

After laying the RCC pipes at proper alignment and gradient their abutting faces shall be coated with hot

bitumen in liquid condition by means of a brush. The wedge-shaped groove in the end of the pipe shall then

be filled with a tarred gasket in one length for each joint. The collar shall then be slippedover

the end of the pipe and the next piped butted well against the tarred gasket by suitable appliances approved

by Owner/Engineer so as to thoroughly compress the tarred gasket into the grooves, carebeing taken that the

concentricity of the pipes and level are not disturbed during this operation. The collar shall then be placed

symmetrically over the end of the two pipes and the space between the inside of the collar and the outside of

the pipe filled with a mixture of cement and sand in proportion 1:1, tempered with just sufficient water to

have a consistency of the semi-dry conditions, well packed and thoroughly rammed with caulking tools. The

joints shall be finished off with a fillet sloping at 45oto

the side of the pipe. The finished joints shall be protected and cured thoroughly as directed by

owner/engineer. Any plastic solution or cement mortar that may have been squeezed into the inside of the

pipe shall be removed so as to leave the inside of the pipe perfectly clean.

The pipes having diameter 900mm and above shall be provided internal joint also with CM 1:1 for thispurpose

directly the edges of the pipes shall be chipped off and then CM shall have to provided. The surface shall be

finished smoothly to allow smooth flow.

LEANING OF PIPES

s soon as a stretch of RCC pipes has been laid complete from

manhole, for a stretch asdirected by

owner/Engineer contractor shall run through the pipes both backwards and forwards a double disc or solid or

closed cylinder 75mm less in diameter than the internal diameter of pipes. The open end ofan

incomplete stretch of pipeline shall be securely closed as may be directed by owner/Engineer toprevent entry

of mud or silt etc.

as a result of the removal of any obstructions Owner/Engineer

considers that damages may have been caused to the pipelines, he

shall be entitled to order the stretch to be tested immediately.

Should such test prove unsatisfactory, contractor shall amend the

work and carry out such further tests as are required by

owner/Engineer.

shall also be ascertained by contractor that each stretch from

manhole to manhole or the stretch as directed by Engineer is

absolutely clear and without any obstruction by means of visual

examination of the interior of the pipe line suitable enlightened by

projected sunlight or otherwise.

l RCC pipes shall be measured according to the work actually done

and no allowance will be made for any waste in cutting to the exact

length required. The measurement for pipes shall be in running

meters nearest to a cm. of length along the centre line of pipe as

actually laid at work sites.

Signature of Bidder Page 3 of

Ahmedabad Municipal Corporation

he rate for providing, laying and jointing of RCC pipes shall be

deemed to include the cost of collars/rubber rings, jointing material,

testing and extra excavation required for ordinary bedding of pipes

and also for collars and pipe sockets, if any.

any damage is caused to the pipeline during the execution of work

or while cleaning the pipeline as specified, Contractor shall be held

responsible for the same and shall replace the damaged pipeline and

the same at his own cost to the full satisfaction of Engineer.

Item No. : 08 Lowering, laying and jointing R. C. C. pipes in C. M. 1.1 1/2 of following diameters in

proper position, grade and alignment at all level as directed by Engineer-in-charge

including conveyance from stores to site of work, labour, giving hydraulic testing as

(Based on GWSSB SOR 2022-23, Item No. 11; Page-39)

300 mm internal diameter (Based on GWSSB SOR 2022-23, Item No. 11.b.6 ; Page-39)

450 mm internal diameter (Based on GWSSB SOR 2022-23, Item No. 11.b.10; Page-39)

600 mm internal diameter (Based on GWSSB SOR 2022-23, Item No. 11.b.10; Page-39)

750 mm internal diameter (Based on GWSSB SOR 2022-23, Item No. 11.b.10; Page-39)

900 mm internal diameter (Based on GWSSB SOR 2022-23, Item No. 11.b.10; Page-39)

1200 mm internal diameter (Based on GWSSB SOR 2022-23, Item No. 11.b.10; Page-39)

LAYING OF PIPES AND FITTINGS/SPECIALS

This specification covers the requirements for laying of pipes and fittings/specials below ground.

APPLICABLE CODES

The laying of pipes and fittings/ specials shall comply with all currently applicable statutes,

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

referred to. In all cases, the latest revision of the standards/ codes shall be referred to. If

of this specification conflict with the requirements of the standards/codes, this specification shallgovern.

CODES OF PRACTICE

(a) IS : 783 - Code of practice for laying of concrete pipes.

(b) IS : 3114 - Code of practice for laying of cast iron pipes.

(c) IS : 3764 - Safety codes for excavation work

(d) IS : 4127 - Code of practice for laying of glazed stoneware pipes

(e) IS : 5822 - Code of practice for laying of welded steel pipes for water supply

(f) IS : 6530 - Code of practice for laying of asbestos cement pressure pipes

CARTING & HANDLING

Pipes and fittings/ specials shall be transported from the factory to the work sites at places along the

alignment of pipeline as directed by Owner/ Engineer. Contractor shall be responsible for the safety of

pipes and fittings/ specials in transit, loading/ unloading. Every care shall be exercised in handling pipes

and fittings/ specials to avoid damage. While unloading, the pipes and fittings/ specials shall not be

thrown down from the truck on to hard surfaces. They should be unloaded on timber skids with

steadying ropes or by any other approved means. Padding shall be provided between coated pipes,

Signature of Bidder Page 4 of

Ahmedabad Municipal Corporation

fittings/ specials and timber skids to avoid damage to the coating. Suitable gaps between pipes

be left at intervals in order to permit access from one side to the other. In case of spigot socket pipes,

care should be taken regarding orientation of pipes while unloading. As far as possible pipes shall be

unloaded on one side of the trench only. The pipes shall be checked for any visible damage (such as

broken edges, cracking or spilling of pipe etc.) while unloading and shall be sorted out for

Any pipe, which shows sufficient damage to prelude it from being used, shall be discarded. Draggingof

pipes and fittings/ specials along concrete and similar pavement with hard surfaces shall be

Each stack of pipes shall contain only pipes of same class and size, with consignment or

batch number marked on it with particulars of suppliers/manufacturer wherever possible. Storage shall

be done on firm level and clean ground and wedges shall be provided at the bottom layer to keep

the stackstable.

The stack shall be in pyramid shape or the pipes laid length wise and crosswise in alternate layers.

The pyramid stack shall be made for smaller diameter pipes for conserving space in storing them. The

height of the stack shall not exceed 1.5 m.

Fittings/specials shall be stacked under cover and separated from pipes.

Rubber rings shall be stored in a clean, cool store away from windows, boiler, electrical

equipment and petrol, oils or other chemicals. Particularity in the field where the rubber rings are

being used it is desirable that they are not left out on the ground in the sun or overnight under

heavy frost or snow conditions.

BONING STAVES AND SIGHT RAILS

laying the pipes and fittings/ specials the centre for

each manhole/ chamber or pipeline shall be marked

by a peg. Contractor shall dig holes for and set up

two post (about 100mm x100mm x1900

mm) at each manhole/ chamber or junction of pipelines at nearly equal distance from the peg and at

sufficient distances therefrom to be well clear of all intended excavation, so arranged that a sight rail

when fixed at a certain level against the post shall cross the centre line of the manhole/ chamber or

pipes lines. The sight rail shall not in any case be more than 30m apart, intermediate rails shall be putup

if directed by Owner/Engineer.

oning staves of 75mm x 50mm size shall be prepared

by Contractor in various lengths, each length being of

a certain whole number of meters and a fixed tee-

head and fixed intermediate cross pieces,

each about 300 mm long. The top-edge of the cross piece must be fixed below the top-edge of this

at a distance equal to the outside diameter of the pipe or the thickness of the concrete bed to be

laid as the case may be. The top of cross pieces shall indicate different levels such as excavation for pipe

line, top of concrete bed, top of pipe etc. as the case may be.

he sight rail of size 250 mm x 40 mm shall be

screwed with the top edge resting against the level

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Ahmedabad Municipal Corporation

marks. The center line of the pipe shall be marked on

the rail and this mark shall denote also the meeting

point of the centre lines of any converging pipes. A

line drawn from the top edge of one rail to the top

edge of the next rail shall be vertically parallel with

the bed of the pipe, and the depth of the bed

of pipe at any intermediate point may be determined by letting down the selected boning staff until the

tee head comes on the line of sight from rail to rail.

he post and rails shall be perfectly square and planed

smooth on all sides and edges. The rails shall be

painted white on both sides, and tee-heads and

cross-piece of the boning staves shall be painted

black. For the pipes converging to manhole/ chamber

at various levels, there shall be a rail fixed for every

different level. When a rail comes within 0.60 M of

the surface of the ground, a higher sight- rail shall be

fixed for use with the rail over the next point. The

posts and rails shall in no case be removed until the

trench is excavated, the pipes are laid and

Owner/Engineer gives permission to proceed with

the back filling.

The type of bedding for pipes shall be granular bedding as specified and directed by Engineer- incharge.

Laying of pipes and fittings/specials

All precautions shall be taken during excavation and laying operations to guard against possible damage

to any existing structure/ pipeline of water, gas, sewage etc. After excavation of trenches, pipes shall

not be lowered unless the dimensions of trenches and bedding work for pipes at thebottom

of the trenches are approved and measured by Owner/Engineer. Pipes and fittings/specials shall be

carefully lowered in the trenches. Special arrangements such as cranes, tripods with chain pulley

for lowering the pipes and fittings/ specials shall be made by Contractor. In no case pipes and fittings/

specials shall be dropped. Slings of canvas or equally non-abrasive material of suitable width or special

attachment to fit the ends of pipes and fittings/ specials shall be used to lift and lower the coated pipes

and fittings/specials. The pipes and fittings/specials shall be inspected for defects and be rung with a

light hammer preferably while suspended to detect cracks. If doubt persists, further confirmation shallbe

done by pouring a little kerosene/dye on the inside of the pipe at the suspected spot. No sign of

kerosene/dye should appear on the outside surface. Pipes and fittings/specials damaged during

lowering or aligning shall be rejected by Owner/ Engineer.

l the pipes are to be laid perfectly true both in alignment

and to gradient specified. In case of spigot and socket pipe

the socket end of the pipe shall face upstream, except

when the pipelines runs uphill in which case the socket

ends should face the upgrade. The lying of pipes shall

always proceed upgrade of a slope. After placing a pipe in

the trench, the spigot end shall be entered in the

socket and the pipe forced home and aligned to required gradients. The pipes shall be secured in place

with approved backfill material tamped under it except at the socket. Pipes and fittings/ specials which

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Ahmedabad Municipal Corporation

sufficient and uniform space for joints shall be removed and replaced with pipes and fittings/ specials of

proper dimensions to ensure such uniform space. Precautions shall be taken to prevent dirt from

entering the jointing space. At times when pipe laying is not in progress, the open ends of pipe shallbe

closed by a watertight plug or other means approved by Owner/ Engineer. During the period that the

plug is on, the Contractor shall take proper precautions against floating of the pipe owing to entry of

water into the trench. Wherever it is necessary to deflect pipe form a straight line, either in the vertical

of horizontal plane, to avoid obstruction or where long radius curve are permitted the deflection

at joints shall not exceed 2 1/2o. In case of pipes, with joint to be made with loose collars, the collars

shall be slipped on before the next pipe is laid. The pipes shall be laid such that the marking on pipes

appears at the top of the pipes.

he cutting of pipe for inserting valves, fittings or specials

shall be done in a neat and workman like manner without

damage to the pipe so as to leave a smooth end at right

angles to the axis of the pipe. For this purpose, pipe-

cutting machine shall be used.

Thrust blocks shall be provided, to counteract hydraulic thrust, at places wherever directed by

owner/engineer and as per relevant drawing

Jointing for pipes and fittings/specials shall be done in accordance with the relevant specifications

depending upon the type of pipes being used.

TESTING AND COMMISSION

Testing and commissioning of pipes shall be done in accordance with the relevant specifications.

Trenches shall be back filled with approved selected excavated material only after the successful testing

of the pipeline. The tamping around the pipe shall be done by hand or other hand-operated mechanical

means. The water content of the soil shall be as near the optimum moisture content as possible. Filling

of the trench shall be carried out simultaneously on both sides of the pipe in such a manner that

unequal pressure does not occur. Back filling shall be done in layers not exceeding 45cm.

Each layer shall be consolidated by watering, ramming, care being taken to avoid damage to the

pipeline. In case of mild steel Pipes/specials, the spiders provided during assembly and welding shall be

retained until the trench is refilled and consolidated. Where timbers are placed under the pipelineto

aid alignment, these timbers shall be removed before back filling.

REINSTATEMENT OF ROAD/FOOTPATH

Reinstatement of road/footpath shall be done as per the requirements of local authorities and the

relevant specification after completion of work.

CLEARING OF SITES

All surplus materials, and all tools and temporary structures shall be removed from the site as

by Owner/Engineer and the construction site left clean to the satisfaction of Owner/Engineer.

• The measurement for excavation in trenches shall be done in following manner and will be paid

i. Length :As per the actual length of pipes and fittings/special laid at work site.

ii. Width & Cross sections : As per instructions of Engineer-in-charge.

iii. Depth : Average depth of trench from ground level to the bottom level of bedding.

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Ahmedabad Municipal Corporation

D.8.6.6 Measurement for pipes and fittings/ specials shall be in accordance with the relevant clause(s)

specification for particular type of pipes.

encing provided along the sides of trenches and pits shall not

be paid for separately andContractor shall take into account the

costs of such works and quote accordingly.

case of the metal packing or dressed stones not being deposited

as specified or being mixed up with excavated materials and not

available for the reinstatement of road/pavement, the cost of

the metal packing or dressed stones required shall be charged to

Contractor by Owner/Engineer.

Service lines if damaged during excavation shall be made good

either by contractor or by other agency as Owner/Engineer may

decide and wholly in either case at the expense of Contractor.

For the service lines of water and drainage above 150mm dia.,

the cost of the diversion, supporting etc. will be paid extra as per

Contractor shall not be paid any additional compensation for

excess excavation over what is specified as well as for any

remedial measures that are specified.

The excess excavated material shall be carried away from site of

works as specified, failing which in view of public safety and

traffic conveniences Owner/Engineer may carry out the work

byany other agency at Contractor’s risk and cost.

Item No : 09 Constructing Chamber of following size including excavation, refilling, BBCC (1:5:10) for

foundation, C.C.Channel (1:2:4), finished 15 mm thick cement plaster inside in CM 1:3,

finishing with cement slurry, Brick masonary in CM 1:5 & excluding the cost of chamber

seat cover etc.completed.

0.60 X 0.45 mt. size Inside Clear, Depth from 0.0 to 0.90 meter

0.60 X 0.75 mt. size Inside Clear, Depth from 0.0 to 0.90 meter.

0.75 X 0.75 mt. size (Inside Clear) Depth from 0.0 to 1.20 meter.

The sewet trench shall be excavated to the alignment and gradient shown on the plan and section. In

all storts soil including oil masonary asphalt roads and wet. excavation . The sewer excavation shall be

commenced at the down stream end of the sewer and be continued upto the gradient as directed. The

trench shall not open more than 60 meters in advace of the completed sewer only when directed by

the Engineer in charge looking to the progress of the work in obtaining the formation of the bottom of

the trenches the usual methods of suing sight rails and bonning roads shall be adopted during the

whole of the process. The center line of uniform height shall be carried clearly on each rail. The depth

of the excavation and invert of the sewer shall be checked by means of bonning road of appropriate

length and also straight edge.

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Ahmedabad Municipal Corporation

The bed of the trench be shall well remmed before starting laying of sewer ines and cement concrete

and masonary work.

Where trenches are deep in bad grounds the sides shall be supported by suitable imbering of shorting

work looking to the nature of soil near big or important structures, the sides of the trenches shall be

closely and securely timbered. If any settlement of the building is anticipated the timbering shall be left

in the ground. The various materials excavated shall be separately stacked so that in refilling the may

be relaid on the same order as before and least possible damage shall be done carpet on the public

roads and private properties. Surface covering consisting of asphalt carpet shall be kept on one side

and preserved for reinstatement. The excavated earth shall not heaped near the trenchers so as to

caused unnecessary obstruction along the pulling inspection, trenches etc. shall be tunneled under

only as necessary. The side of the trenches shall be nearly vertical and plumb & red light shall be

placed at each end at intervals as instructed and further protested by rope fence. Necessary caution

boards shall also be erected and diaced as directed by the Engineer in charge.

Wherever possible material excavated from the trenches of whatever kind shall not placed nearer than

3 meters from the outer edge of the excavated trench. The utmost shall have to be taken in refilling

the trenches so that no damage may be done no sewer no lump shall be allowed to be put around the

sewer. The remming of the filling shall be done and well watered. The surplus earth shall be removed

directed within 30 meters lead. The measurement of the work shall be exact length and width of the

trench as specified or as per City Engineer instruction and depth shall be measured vertical as per

section upto invert or the pipe lind The City Engineer reserves the right of extra excavation on either

side if considers necessary for the safely of the work.

The bottom and sides of the trench shall be dressed in level and plumb in all directions before any

concrete in India. In case the excavation is done deeper than required no filling shall be allowed to

bring the formation to proper level but contractor shall have to lay cement or lime be concrete of

filling or other acceptable materials as directed by C.E. at contractor won cost so as to come to proper

information, in case bas formation are met with the work shall have be done as per instruction of C.E.

necessary arrangements for watering trenches must be provided be contractor and without proper

watering trenches will not be allowed to be tilled to further. Contractor shall have to make

arrangement for acees to invert of the sewer and for inspection of the ware as ordered by the

Engineer. If is required to shired or after the alignment section of diameter of the pip the contractor

shall carry or altered the alignment section or diameter of the pipe the contractor shall carry out the

altered work at the rates quoted by him for the original work for items and contractor shall not claim

any expenses due to the changes made.

In case no work shall be done at night or on Sundays & other holidays and during the recess time

except in and other holiday the case of bad grounds such as running sand where the work must be

executed various day night without intruption when so ordered by the Engineer.

All existing water pipe storm drains sewer line railway tract, electric cables etc. which do not in the

opinion of Engineer required to be charged in location shall be supported and protected from injury by

the contractor. The contractor shall be liable to pay all damages to water pipe, drains electric and

telephone cables and to private property during the execution of this contract and the same will be

recovered from the running bills or thedeposit of work whenever it becomes necessary in the opinion

of the Engineer in charge location of any existing sewers drains etc. not otherwise from in these

specification the contractor shall do the work of making such change and the work shall be paid for as

extra work. All places of public utility etc. shall be kept accessible for use.

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Ahmedabad Municipal Corporation

No extra payment shall be made for land sides and side slopes done without prior approval of the

Engineer in charge.

Wherever natural soil commends winder excavation the mentioned above the same shall be given

after approved C.E. The rate for excavation for easy jointing and caulking nothing extra shall be paid for

Refilling of trenches shall be done only after the grade of line and hydraulic test practicable of the lines

are checked and approved of and order given by the Engineer in charge. The refilling shall be

accompanied by through watering the layers of 0.50 metrs. Further refilling shall be done there after

and process should be repeated till trenches are completely refilled. Temping and ramming with

rammers shall have to be done at all place of important work where ordered by Engineer in charge.

After the trench is give the trenches shall have to be refilled within 4 days with complete watering. If

the contractor fails to do watering satisfactory corporation shall get it done at the risk and cost of the

contractor with or without giving any notice and the expenses incurred in doing so recovered from the

contactor either in cost or from his payment through bills.

The brickbats shall be of new bricks, hared well burnt and broken to 40 mm nominal size. These shall

be free from earth and shall be got app. use. Sand shall be clear coarse, sharp and free from earth and

other impurities. Mixing shall be done on brick or stone platform or of brickbats to mortar shall be

measured in heaps by brick height irregular measure. If ordered by C.E.

Concrete shall be laid in layers of 15 cms. and well consolidated maintained by the contractor for

before commencing the brick work. over boxes, concrete shall be well watered. The mix shall be done

in prop. of 1 : 5 :

Cement shall confirm to M-3, sand shall confirm to M-6, coarse agg. shall confirm to M-13, water shall

The prop. of the cement of sand coarse agg. shall be 1 : 5 : 10 i.e. 1 part of cement, 5 part of sand and

10 parts of coarse agg. by volume. and the work shall be carried out as per inst. of Engineer in charge

and as per C.3.

Brick work cement mortar :

Bricks shall be table brick confirming of approved kiln specifications as laid sown n PWD Hand book

NO. 2. These shall be well burnt and free from all defects and shall be got approved by the Engineer in

charge before the work is started. Cement to be used for mortar shall comply with PWD Hand book

specifications, cement mortar in the brick work shall be 1 part of cement, 5 parts of sand. Every brick

well sacked in water is required to be laid I full & closed joints of cement mortar the thickness of which

shall not exceed 1.25 cms. If on removal of centering any open joint shall be found, these shall be

pointed immediately. Special care shall taken to make the face of brick work smooth brick work shall

be toothed or shall racked back in coarse.

All intrades of curves shall be worked from temple strictly made to dimensions as per 1974-75 latest

plan and section approved by C.E.

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Ahmedabad Municipal Corporation

Brick work in general shall be of first class workmanship & shall be executed according to the plan

working proper dimention & as directed by the Office in charge from time to time. Brick should be

thoroughly wetted in water before use. All brick work to be cleaned & wetted before laying cement

mortar shall be prepared in special iron pals. And mixed bag of 1.25 cft. or 1 cft. as measured as the

case may be. All materials shall be stacked in one side so as not to obstruct traffic in any way. The

masonry should be constructed in proper workmanship like manner with jointing plumb etc. to confirm

with the general specification No. 45 PWD Hand Book. The face work should be nearly finished. The

shall be kept watered for a week at least three days after the date of completion.

Providing and laying cement concrete 1:2:4

(1 cement :2 coarse sand :4 graded stone aggregate 20 mm nominal size)

RCC Work :- In general, plain and reinforced concrete work for manholes shall be carried out in

accordance with latest version of IS 456 unless otherwise specified in this specification. The slab of

manhole shall be cast with shutters lined with plywood and shall be

smooth finished. For avoiding surface cracks due to variation in atmospheric temperature and

exposure to direct sunlight, RCC slab of manholes after casting shall be kept wet. M 15 grade of

concrete used for construction of RCC manholes shall have minimum cement content of 360 kg/cum of

concrete. Bar bending schedule for reinforcement shall be prepared by contractor and got approved

from owner/ engineer before proceeding with the work. Minimum cover to the reinforcement shall be

The rate includes cost of all labour, materials, tools and plant etc. required for satisfactory completion

of this item as described above.& the drawing as per A.M.C Dr. S.O.R shall be final. The rate shall be for

a unit of one number basis.

Providing TMT bar.

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

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

on the drawings or as directed.

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

subsequent concreting.

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

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

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

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

be straightened before being used on the work. They shall not be heated to facilitate bending. Unless

otherwise specified, a ‘U’ type hook at the end of each bar shall invariably be provided to main

reinforcement. The radius of the bend shall not be less than twice the diameter of the round bar and

the length of straight part of the bar beyond the end of the curve shall be at least four times the

diameter of the round bar. In case of bars which are not round and in case of deformed bars, the

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Ahmedabad Municipal Corporation

diameter shall be taken as the diameter of circle having an equivalent effective area. The hooks shall

be suitably encased to prevent any splitting of the concrete.

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

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

sufficiently close intervals,. Bars shall not be allowed to sag between supports nor displaced during

concreting or any other operations of the work. All devices used for positioning shall be of

noncorrodible material. Wooden and metal supports shall no extend to the surface of concrete, except

where shown on drawings. Placing of broken stone or brick and wooden blocks shall not be allowed.

Pieces of broken stone or brick and wooden blocks shall not be used. Layers of bars shall be separated

by spacer bars, precast mortar blocks or other approved devices. reinforcement after being placed in

position shall be maintained in a clean condition until completely embedded in concrete. Special care

shall be exercised to prevent any displacement of reinforcement in concrete already placed. To

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

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

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

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

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

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

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

25 mm or 1.25 mm times the maximum size of the coarse aggregate whichever is greater by concrete

between them. Where not feasible, overlapping bars shall be bound with annealed wires not less than

1 mm thick twisted tight. The overlaps shall be staggered for different bears and located at points

along the span where neither shear nor bending movement is maximum.

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

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

the bars that are joined by coupling shall be upset for sufficient length so that the effective cross

section at the base of threads is not less than norma l cross-section of the bar. Threads shall be

standard threads. Steel for coupling shall conform to I.S.

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

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

subject to more than 75 percent of the maximum permissible stresses and welds so staggered that at

any one section not more than 20 percent of the rods are welded. Only electric are welding using a

process which excludes air from the molten metal and conforms to any or all other special provisions

for the work shall be accepted. Suitable means shall be provided for holding bars securely in position

during welding. It shall be ensured that no voids are left in welding and when welding is done in two or

three stages, previous surface shall be cleaned properly. Ends of the bars shall be cleaned of all loose

scale, rust, grease, paint and other foreign matter before welding. Only competent welders shall be

employed on the work. the M.S. electrodes used for welding shall conform to I.S. 814. Welded pieces

of reinforcement shall be tested. Specimen shall be taken from the actual site and their number and

frequency of test shall be as directed.

R.C.C. Bedding :

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Ahmedabad Municipal Corporation

Cement concrete for the bottom portion of manhole shall consist of one part of cement two parts of

sand four parts of black trap metal of other approved material of 0.6 to 2.5 cms size from well graded

as per instruction. The rate includes all necessary materials mixing lifting placing ramming watering etc.

the exposed faces to be neatly finished smooth with cement as per instructions. The concrete work to

kept constantly watered for at least fortnight.

Cement Plaster :

Cement plaster 15 mm thick shall be done using cement mortar of 1 part of cement & 3 parts of sand

in uniform thickness with surfaces trely in plums. The work in general shall comply with general

specifications for plaster No. 64 in PWD hand book. The plaster surfaces to be kept damp at least for a

fortnight. All internal sides of the manholes including soffit of the arch shall be provided with cement

FRC manhole cover with seat to be set in cement mortar with cement concrete of 1 : 2 : 4 prop.

alround. FRC cover shall be marked with year mar AMC. etc. & arrow showing the direction of flow.

Foot steps shall be of the best quality PVC as specified above true to dimensions. The rate includes

mixing the same in position as directed PVC foot steps of approved design and quality shall have to be

fixed if so ordered by C.E. without extra charges. PVC steps shall be fixed at interval of 37 cm. vertically

& 22 cm. horizontally starting from the invert of the line.

Mode Measurment

The mode of measurement shall be on Nos.

Item No : 10 & 11 Constructing Slab Type M.H. Chamber Of The Following Size Including Excavation,

Refilling, Brick Bats Cement Concrete (1:5:10) of thickness 15 C.M., CC Channel (1:2:4) of

thickness 10 C.M., finished 15 mm thick cement plaster inside & outside (Only for shaft) In

Cm 1:3, Finishing With Cement Slurry, P/F 4 Mm Dia M.S.Steel Hdpe Coated Steps 35 Cm C/C

At 35 Cm Staggered Masonary In Cm 1:5, Rcc Slab In Cc1:1.5:3 of thickness 15 C.M.,Including

Cantering & Reinforcement (Single jalli at 15 C.M. c/c bothway 10 mm dia.)But Excluding The

Cost Of Manhole Seat Cover Etc..Completed Of Size 0.75 X 1.00 Meter (Inside Clear, M.H.

length should be parallel to the flow)

(Based on Drainage SOR 2015-16; Item No.14)

1.00 to 2.00 meter depth, (Slab at Ground level)

2.00 to 3.00 meter depth, (Slab at below 0.60 mt. From G.L.)

Manhole shall be provided at every change of alignment, gradient or diameter of

sewer/storm water drains, Bends and junctions in the sewer/drain shall be grouped together

in manhole as far as possoble. The maximum distance between inspection chambers shall be

about 25 meters. Where the diameter of sewer/drain is increased, the soffit of the pipe shall

be fixed at the same level and necessary slope given to the channel of manhole/inspection

chamber. The minimum internal sizes of manhole/inspection chamber shall be as per the

respective item of work. The manhole/inspection chamber shall be constructed as per the

detailed drawings and as directed by Engineer. The bed concrete and the brick masonry shall

be constructed of such thickness as shown on drawing. The brick masonry shall be constructed

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Ahmedabad Municipal Corporation

in C.M. (1:5), plastered on both faces with 15 mm cement plaster in C.M. (1:3). The channel

shall be semicircular in the bottom half and of diameter equal to the sewer/drain. Above the

horizontal diameter, the sides shall be extended vertically to the same level as the crown of

the outgoing pipe and the top edge shall be suitable rounded off. The branch channels shall

also be similarly constructed with respect to the benching out at their junction with the main

channel as appropriate fall suitable rounded off in the direction of flow in the main channel

shall be given. The channel at the bottom of manhole / inspection chamber shall be

plastered with C.M. (1:3) and finished smooth. Rungs shall be provided in all

manholes/inspection chambers over 0.6 mtr in depth and shall be of cast iron conforming to

IS:5455. These rungs shall be fixed staggered in two vertical runs, 300 mm apart horizontally

and 300 mm c/c vertically. The top rung shall be 450 mm below the manhole/ inspection

chamber cover and the lowest not more than 300 mm above the benching. The

manhole/inspection chamber frame and cover shall be of cast iron of specified weight and

shall conform to the requirements given in IS:1726. The covers and frames shall be cleanly cast

and they shall be free from air and sand holes and from clod shuts. They shall be neatly

dressed and carefully trimmed. All castings shall be free from voids whether due to shrinkage,

gas inclusion or other causes.Covers shall have a raised chequered design on the top surface to

provide an adequered nonslip grip. Cover shall be capable of easy opening and closing and it

shall be fitted in the frame in workmanship like manner. The cover shall be gastight and water

tight. The size of covers specified shall be considered as the clear internal dimensions of

the frame. Covers and frames shall be coated with a black bituminous composition. The

coating shall be smooth and tenaceous. The frame of manhole/inspection chamber cover shall

be firmly embeded to correct alignment and level in cement concrete on the top of the

masonry. The item shall be executed as per the detailed drawing and as directed by Engineer.

Precast R.C.C. cover of required size and thickness shall be provided if specified in the item of

FRC SEAT COVER:

The frame shall be fixed in cement concrete of M15 grade all around and finished with neat

cement. The cover shall have a minimum thickness of 100 mm and weighing 78 kg. The fibers

shall constitute 1% of the weight of the concrete in the form of 50 mm to 100 mm long high

tensile steel wires. For the cover, MS sheet lapping of 3 gauge shall be provided to avoid

damage to the edges. Similarly for frame, MS angle/flat shall be provided along the edge.

Both MS sheet and angle shall be painted with black bituminous paint. The cover should have

suitable lifting arrangement. The fiber reinforced frame and cover shall be manufactured as

per the drawing approved by Owner/Engineer. The size, type, weight, and locking

arrangement for frame and cover shall be as specified

RCC Work :- In general, plain and reinforced concrete work for manholes shall be carried out

in accordance with latest version of IS 456 unless otherwise specified in this specification.

The slab of manhole shall be cast with shutters lined with plywood and shall be smooth

finished. For avoiding surface cracks due to variation in atmospheric temperature and

exposure to direct sunlight, RCC slab of manholes after casting shall be kept wet. M 20 grade

of concrete used for construction of RCC manholes shall have minimum cement content of

360 kg/cum of concrete. Bar bending schedule for reinforcement shall be prepared by

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Ahmedabad Municipal Corporation

contractor and got approved from owner/ engineer before proceeding with the work.

Minimum cover to the reinforcement shall be 40 mm.

The rate includes cost of all labour, materials, tools and plant etc. required for satisfactory

completion of this item as described above. The rate shall be for a unit of one number basis.

Rate reduction over item of Constructing Slab Type M.H. Chamber of size 1.00 x 0.75 mt for constructing

slab @ depth more than 0.60 mt below Ground Level (Max. 3 unit of DM should be reduced in this

Item No : 12 & 13 Constructing Slab type M.H. Chamber of the following size including excavation, refilling,

brick bats cement concrete (1:5:10) of thickness 15 C.M., CC Channel (1:2:4) of thickness 10 C.M.,

finished 15 mm thick cement plaster inside & outside (Only for shaft) in CM 1:3, finishing with

cement slurry, P/F 4 mm dia M.S.Steel HDPE coated steps 35 cm c/c at 35 cm staggered in masonary

CM 1:5, RCC Slab in CC 1:1.5:3 of thickness 23 C.M., including Cantering & reinforcement (double

jalli at 15 C.M. c/c bothway 12 mm dia.) but excluding the cost of Manhole seat cover

etc..completed. of Size 1.00 X 1.40 meter (Inside Clear, M.H. length should be parallel to the

1.00 to 2.00 meter depth, (Slab at Ground level)

2.00 to 3.00 meter depth, (Slab at below 0.6 mt. From G.L.)

3.00 to 4.00 meter depth, (Slab at below 1.00 mt. From G.L.)

5.00 to 6.00 meter depth, (Slab at below 1.00 mt. From G.L.)

6.00 to 7.00 meter depth, (Slab at below 1.00 mt. From G.L.)

Rate reduction over item of Constructing Slab Type M.H. Chamber of size 1.00 x 1.40 mt for

constructing slab @ depth more than 0.60 mt for ( MH 2 to 3 mt depth) and 1.0 mt for (MH above

3.0 mt depth) below Ground Level (Max. 5 unit of DM should be reduced in this item)

Specification is same as specification of Item No 08, only the MH Chamber size is mentione in this

item is follows.

Mode Measurment

The mode of measurement shall be on Nos.

Item No : 14 Dismantling of existing Arch type manhole up to Arch and then Const. Slab type manhole of

following size incl. excavation, refilling and & finished 15 mm thick cement plaster inside in CM 1:3,

P/F 4 mm dia M.S.Steel HDPE coated steps 35 cm c/c at 35 cm staggered in masonry CM 1:5, incl.

cost of RCC Slab in CC 1:1.5:3, including Cantering & reinforcement as directed by engineer in

charge. Rate includes carting of debris and excavated soil

1.0 x 0.75 mt (inside clear) RCC Slab of thickness 15 C.M& reinforcement (Single jalli at 15 C.M.

c/c bothway 10 mm dia.) From 0 to 2 mt depth (Slab at Ground level)

Signature of Bidder Page 15 of

Ahmedabad Municipal Corporation

1.00 x 0.75 mt (inside clear) RCC Slab of thickness 15 C.M& reinforcement (Single jalli at 15 C.M. c/c

bothway 10 mm dia.) From 2 to 3 mt depth (Slab at below 1.00 mt. From G.L.)

1.40 x 1.00 mt (inside clear) RCC Slab of thickness 23 CM & reinforcement (double jalli at 15 C.M.

c/c bothway 10 mm dia.) From 0 to 2 mt depth (Slab at Ground level)

1.40 x 1.00 mt (inside clear) RCC Slab of thickness 23 CM& reinforcement (double jalli at 15 C.M. c/c

bothway 10 mm dia.) From 2 to 3 mt depth (Slab at below 1.00 mt. From G.L.)

1.40 x 1.00 mt (inside clear) RCC Slab of thickness 23 CM & reinforcement (double jalli at 15 C.M.

c/c bothway 10 mm dia.) From 3 to 4 mt depth (Slab at below 1.00 mt. From G.L.)

The manholes shall be Dismantling of existing Arch type manhole up to Arch and then Const. Slab type

manhole as per plan and section approved by the Addl. C.E. The specifications for different items of

manholes are as under :

Excavation: This shall be done as per specification mentioned in item No.1 Excavation.

Brickbats cement concrete in proportion (1:5:10) For detailed specification refer R & B Dept. booklet

for General Technical Specification for building works , Page no. 31 , Section.No. 5.3.8(a)

Brickwork(1:5):

For detailed specification refer R & B Dept. booklet for General Technical Specification for building

works ,Page no. 43 , Section. No. 6.12(B).

C.C. Channels :

Cement concrete for the inverts and channels of manholes shall consist of one parts of cement 2 parts

of sand and 4 parts of aggregates of black trap metal of approved materials of sizes from 0.6 to

cm. well graded as per instructions.

The rate includes all necessary materials mixing, laying and ramming and watering. The exposed faces

to be finished with neat cement as per instructions. The channel shall be half round in lies with the dia

of pipe as per drawing and instruction of the engineer in charge. Proper benching shall be provided at

both sides of the channel.

Cement Plaster(1:3) :

For detailed specification refer R & B Dept. booklet for General Technical Specification for building

works , Page no. 104 , Section. No. 17.58(I) Except that the thickness of the plaster shall be 15 mm

instead of 10 mm.

4 mm dia M.S Steel HDPE coated steps 35 cm c/c at 35 cm staggered

For detailed specification refer R & B Dept. booklet for General Technical Specification for building

works , Page no. 159 , Section. No. 24.13 and fixation or any change at the site according to the

direction of Engineer-in-charge in charge

Carting of Surplus Earth :

The surplus earth which is left an site after refilling and proper watering of the trenches shall have to

be carted away upto a distance within 30 mts. & shall be spread at the site according to the direction

of Engineer-in-charge in charge.

RCC Work :- In general, plain and reinforced concrete work for manholes shall be carried out in

accordance with latest version of IS 456 unless otherwise specified in this specification. The slab of

manhole shall be cast with shutters lined with plywood and shall be smooth finished. For avoiding

surface cracks due to variation in atmospheric temperature and exposure to direct sunlight, RCC slab

of manholes after casting shall be kept wet. M 20 grade of concrete used for construction of RCC

manholes shall have minimum cement content of 360 kg/cum of concrete. Bar bending schedule for

Signature of Bidder Page 16 of

Ahmedabad Municipal Corporation

reinforcement shall be prepared by contractor and got approved from owner/ engineer before

proceeding with the work. Minimum cover to the reinforcement shall be 40 mm.

The rate includes cost of all labour, materials, tools and plant and size etc. required for satisfactory

completion of this item as described above.& the drawing as per A.M.C Dr. S.O.R shall be final.

The rate shall be for a unit of one number basis.

Item No : 15 Providing and fixing S.W. gully trap with C.I. grating\ brick masonry chamber and water tight

C.I. cover with frame of 300mm x 300mm size (inside) with standard weight.(i) Square mouth traps.

(A) 100mm x 100mm size P type (Based on Building SOR 2023-24, Item No. 24006AA, NBO Item

(1) Water shall conform to M-1. (2) Cement mortar of proportion 1 : 5 shall conform to to M-11. (3)

Burnt brick shall conform to M-15. (4) The S.W. Gulley trap of 100 mm. x 10-0 mm. size shall conform

Excavation for gulley trap shall be done true to dimensions and levels as indicated on plans or as

directed. The excavation work shall generally be done as per relevant specification of earth work.

The gulley trap shall be fixed over cement concrete 1 : 5 : 10 (1 cement : 5 sand : 10 graded brick bats

aggregate 40 mm. nominal size) foundation, 650 mm. square and 100 mm. thick. The depth of top of

concrete below the ground level shall be 675 mm. The jointing of gulley outlet to the branch drain

shall be done similar to jointing of S. W. pipe as described in item No. 24.1 (A).

Brick masonry chamber : After fixing and testing gulley and branch drain, a brick masonry 300 x

mm. inside with bricks in C. M. 1 : 5 (1 cement : 5 sand) shall be built be built with a 100 mm. brick

work round the gully trap from the top of bed concrete upto ground level. The space between the

chamber walls and the trap shall be filled with cement concrete 1 : 5 : 10. The upper portion of the

chamber i.e. above the top level of the trap shall be plastered inside with cement mortar 1 : 3 (1

cement : 3 sand) finished with floating coat of neat cement. The corners and bottom of the chamber

shall be rounded of so as to slope towards the grating.

Fixing FRC G.T. round cover with frame incl. fixing the same.

Mode of measurements & payment :

The rate includes cost of all labour, materials, tools and plant etc. required for satisfactory completion

of this item as described above.The rate shall be for a unit of one number basis.

Item No : 16 Making connection to the ex.M.H.in running sewer incl. Dewatering and other required

machinery etc. of following dia pipes at any convenient time. All damaged work shall be well

repaired as per instructions. etc..complete.

Making connections to the Ex. MH in running sewer of any dia pipes at any convenient time when MH

is found empty. All damage work shall be well repair instructions etc. comp.The pipes of any dia and

any material shall be cut as per requirement to make connection in existing manhole. Reinforcement

bars shall also have to be cut in existing manhole as per requirement and making good the same. The

dis-mental materials shall be carried to places at all lead as directed by Engineer-in-charge. If directed

the work shall have to be done at night.

The measurement, shall be as per No.

Signature of Bidder Page 17 of

Ahmedabad Municipal Corporation

Item No : 17 Cutting the pipes of following dia coming in the new M.H.in running sewer including cutting

bars, including removing debris /silt from the M.H. and carting at a suitable distance etc..complete

as directed. No payment for M.H. work will be made until pipe is not cut completely in all respect.

150 mm to 300 mm dia.

400 mm to 600 mm dia.

Cutting the pipe of dia 150 to 300 mm incl. cutting the bars, in new mm at any depth it read. And

finishing smooth. Removing any type debris form the MH and courting away at a suitable dist. The

cutting edge shall be finished smooth with CM 1:3 and CC 1:2:4.The M/s shall be on No. basis.

Item No : 18 Repairing damaged M.H. and rasing M.H. up to road level incl. removing damaged brick work

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

MH sheet cover, removing the debris from MH and carting the same as directed.

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

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

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

(D) up to 0.90 mt. (@ Ten Coarse )

Repairing damaged M.H. and rasing M.H. up to road level incl. removing damaged brick work and

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

sheet cover, removing the debris from MH and carting the same as directed. Also

The M/s shall be on No. basis.

Item No : 19 Repairing damaged I.C./ Raising removing damaged brick work and repairing by brick

masonry in C.M. 1:5 and plaster in C.M. 1:3 and fixing C.I. steps and existing chamber sheet cover,

removing the debris from chamber and carting the same as directed.

Repairing damaged I.C./ Raising removing damaged brick work and repairing by brick masonry in

C.M. 1:5 and plaster in C.M. 1:3 and fixing C.I. steps and existing chamber sheet cover, removing the

debris from chamber and carting the same as directed.

The M/s shall be on No. basis.

Item No : 20 Providing F.R.C. MH seat cover incl. carting to the work site etc. comp. Directed.

F.R.C. Extra Heavy Duty (EHD-35) Manhole Covers & Frames Cover : 728mm ø & 100 mm thick

circular cover, 35.00 MT load design, 100x2mm MS flat allround, 16mm ø plain round bar for lifting

the cover & should be fitted with plastic cups. Frame : 560 mm ø clear opening, outer size-

888x888x175 mm. On the upper periphery of frame 25 x 3 mm wide MS flat should be well embed

in concrete to protect the edges of frame. FRC E.H.D.-35 manhole cover & frame described as

F.R.C. Heavy Duty [HD-20] Machinehole Covers - 560 mm ø clear opening, The dimension of frame

and cover as per mentioned in Amend No.1 to IS 12592 : 2002 table

F.R.C. Medium Duty [MD-10] Machinehole Covers - 560mm ø clear opening, The dimension of

frame and cover as per mentioned in Amend No.1 to IS 12592 : 2002 table 1..

F.R.C. Medium Duty [MD-10] Chamber Covers & Frame- 600 x 450 mm clear opening, The

dimension of frame and cover as per mentioned in Amend No.1 to IS 12592 : 2002 table

F.R.C. Light Duty [LD-2.5] Machinehole Covers & Frames-560mm ø clear opening, The dimension of

frame and cover as per mentioned in Amend No.1 to IS 12592 : 2002 table

Providing and Supplying Fiber reinforced concrete circular cover of following dia,thickness and Load

design, with minimum concrete grade M30 and minimum cement content shall be 360 kg / m3, with

maximum water cement ratio of 0.45, minimum reinforcement shall be 70 kg/cmt of bars or with

welded wire mesh, The minimum volume of fibers shall be 0.5 % of the volume of the concrete.

equivalent dia of fiber shall not be greater than 0.75 mm, the length to eq.dia ratio of fiber shall be in

Signature of Bidder Page 18 of

Ahmedabad Municipal Corporation

range of 50 to 80, 2mm th M.S. flat of full thickness around periphery of cover shall be provided, for

lifting arrangement 16 or 12 mm dia plain bar should be fitted with G.I. or plastic cup as per load

design incl. loading carting unloading stacking etc. complete as per IS 12592 & as directed. Other

specification is same as per AMC central store latest circuler.

The design load is as per mentione in the items.

The M/s shall be on NO basis.

Item No : 21 Carting and Fixing M.H., Chamber or Catchpite Seat and Cover in line and level to match

exisisting road level in C.C. 1:2:4 and finishing smooth, watering and protecting for 7 days etc.

complete as directed. M.H. seat cover will be supplied byA.M.C.

Carting and Fixing M.H., Chamber or Catchpite Seat and Cover in line and level to match exisisting

road level in C.C. 1:2:4 and finishing smooth, watering and protecting for 7 days etc. complete as

directed. M.H. seat cover will be supplied byA.M.C.(from any store).

The M/s shall be on No. basis.

Item No : 22 Providing Kachha of Pakka Dummy in the following dia pipes and removing the same after

completion of the connection work as directed. (GWSSB SOR 2022-23)

300 MM dia. And below sewer line

400 to 500 mm dia. Sewer line

600 to 700 mm dia. Sewer line

Temporary/ permanent plugging and blocking of sewer line, branch connections and diversion of

flows anremoval of all plugs, etc. The plugging in the line is temporary or permenent is desided by the

engineer incharge. And that plugging will be removed by agency as and when ask by the engineer

incharge. No extra cost for removing of plugging will given.

Item No : 23 Providing Dead Cantering using good quality Country Wood Planks, wall Plate of required

thickness and size including placing the nece. supports of reqd. size, nailing, fixing with mortar,

levelling. All specification for dead centring as per standard engg. practice etc. comp. as directed.

Providing Dead Cantering using good quality Country Wood Planks,

wall Plate of required thickness and size including placing the nece. supports of reqd. size, nailing,

fixing with mortar, levelling. All specification for dead centring as per standard engg. practice etc.

comp. as directed.

The M/s shall be on Smt. basis.

Item No : 24 Supplying, labour for break down repairing work for activities like excavation, disliting,

removing debris from trench back filling etc. comp. as directed by Eng.in charge.(Building SOR

2023-24,(Basic rates for Labour work))

Labour charges - Mazdoor (Male) (Sr. No. 1051 Code L-22, Page No.39)

Labour charges - Mazdoor (Fe-Male) (Sr. No. 1050 Code L-21, Page No.39)

Labour charges - Supervision for Machinery (Sr. No. 1058 Code L-29, Page No.39)

Providing Labour for Mice. Work for Breakdown work releted job including required tools

etc.comp.Work with available equipment for breakdown type of work. No extra cost will be given for

the equpement used by the labour for the work.

The M/s shall be on No basis.

Item No : 25 Barricading the entire break down or excavated area on rental basis using wooden ballies /

M.S.angles at max. 2.00 meter centre to centre, C.G.I. Sheet, reflective paint / Board out side to

avoid accident & for smooth traffic diversion & movement including cautionary board etc. Item also

Signature of Bidder Page 19 of

Ahmedabad Municipal Corporation

includes for making temporary sufficient nos of lighting arrangement through out the work with

necessary required arrangement. The same shall be removed after completion of work. (Only for

break down work from start to complete) (Based on Drainage SOR 2015-16)

For detailed specification refer5th revision of MORTH (2013) & also amendment shall be applicable to

the latest versions.

The M/s shall be on SMT basis.

Item No : 26 Providing TMT Bar FE415 reinforcement for R.C.C. work including bending, binding and

placing in position complete upto floor two level (upto 10 ton)

For detailed specification refer R & B Department booklet for General Technical Specification for

building works.

M/s. shall be on Kgs basis.

Item No : 27 Brick work using common burnt clay building bricks having crushing strength not less than

35kg./Sq.Cm. In foundation and plinth in Cement Mortar 1:5.(1-Cement: 5 -fine sand)(B)

Foundation Masonary: Providing and laying Brick work using common burnt clay building

bricks having crushing strength not less than 35 kg/Sq. cm. in foundations and plinth in

cement mortar 1: 6 (1 cement : 6 fine sand). This includes pointing, curing, scaffolding, etc.

complete Materials: Water shall conform to M-1 Cement shall conform to M-3 Sand shall

conform to M-6. Brick shall conform to M-15 Cement mortar shall conform to M-11.

Workmanship: Proportion: The proportion of the cement mortar shall be 1:6 (1 cement :

fine sand) by volume. Wetting of bricks: The bricks required for masonry shall be thoroughly

wetted with clean water for about two hours before use or as directed. The cessation of

bubbles, when the bricks are wetted with water is an indication of through wetting of bricks.

Laying: Bricks shall be laid in English bond unless directed otherwise. Half or cut bricks shall

not be used except when necessary to complete to bond; closer in such case shall be cut to

required size and used near the ends of walls. A layer of mortar shall be spread on full width

for suitable length of the lower course. Each brick shall first be properly bedded and set

home by gently tapping with handle of trowel or wooden mallet. It side face shall be flushed

with mortar before the next brick is laid and pressed against it. On copletion of course, the

vertical joints shall be fully filled form the top with mortar. The walls shall be taken up truly in

plumb. All courses shall be laid truly horizontal and all vertical joint shall be truly vertical.

Vertical joints in alternate course shall generally be directly one over the other. The thickness

of brick course shall be kept uniform. The brick shall be laid with frog upwards. A set of tools

comprising of wooden straight edges, mason’s sprit level, square half meter rub, and pins,

string and plumb shall be kept on the site of work for frequent checking during the progress

of work. Both the faces of walls of thickness greater than 23 cms shall be kept in proper

place. All the connected brick work shall be kept not more than one meter over the rest of

the work. Where this is not possible, the work shall be raked back according to bond (and not

left toothed) at an angle not steeper than 45 degrees. All fixtures, pipes, outlets of water,

hold fasts of doors and windows etc. which are required to be built in wall shall be embedded

in cement mortar. Joints: Bricks shall be so laid that all joints are quite flush with mortar.

Thickness of joins shall not exceed 12 mm. The face joints shall be raked out as directed by

taking tools daily during the progress of work, when the mortar is still green so as to provide

key for plaster or pointing to done. The face of brick shall be cleaned the very day on which

the brick work is laid and all mortar dropping removed. Curing Green work shall be protected

from rain suitably. Masonry work shall be kept moist on all the faces for a period seven days.

The top of masonry work shall be kept well wetted at the closeof the day Preparation of

foundation bed: If the foundation is to be laid directly on the excavated bed, the bed shall be

leveled, cleared of all loose materials, cleaned and wetted before starting masonry. If

Signature of Bidder Page 20 of

Ahmedabad Municipal Corporation

masonry is to be laid on concrete footing, the top of concrete shall be cleaned and

moistened. The contractor shall obtain the engineer'’ approval for the foundation bed, before

foundation masonry is started. When puccas flooring is to be provided flush with the top to

plinth, the inside plinth offset hall be kept lower than the outside plinth top by the thickness

of the flooring. Mode of measurements and payment: 70 | P a g e The measurements of this

item shall be taken for the brick masonry fully completed in foundation up to plinth. The

limiting dimensions not exceeding those shown on the plans or as directed shall be final.

Battered, tapered and curved portions shall be measured net. No deduction shall be made

from the quantity of brick work nor any extra payment made for embedding in masonry or

making holes in respect of following items: (1) Ends of joints, beams, posts, girders, rafters,

purlins, trusses, corbel steps etc. where cross sectional area does not exceed 500 Sq. cm. (2)

Opening not exceeding 1000 Sq. cm. (3) Wall plates and bed plates, bearing of slabs, chhajas

an the like whose thickness does not exceed 10 Cms. and the bearing does not extend to the

full thickness of wall. (4) Drainage holes, and recesses for cement concrete blocks to embed

hold fasts for doors, windows etc. (5) Iron fixtures, pipes up to 300 mm dia hold fasts and

doors and windows built into masonry and pipes etc. for concealed wiring. (6) Forming

chases of section not exceeding 350 Sq. Cm. in masonry. Apertures for fire places shall not be

deducted nor shall extra labour required to make splaying of jambs, throating and making

Arches over the aperture be paid for separately. The rate shall be for a unit of one cubic

meter. Above Plinth Masonary: Providing and laying Brick work using common burnt clay

building bricks having crushing strength not less than 35 kg/Sq. cm. in cement mortar 1: 6 (1

cement : 6 fine sand) for superstructure upto floor three level height. This includes pointing,

curing, necessary scaffolding, tools, etc. complete. Materials: Bricks shall conform to M-15.

Cement mortar shall conform M-11. Workmanship: The relevant specifications of item No.

shall be followed except that the masonry work shall be carried out above plinth level to floor

two level i.e. for ground floor. The frames of doors, windows, cupboards, etc. shall be housed

into the brick work at the correct location and level as directed. The heavy steel doors,

window frames etc. shall be built in with brick work but for ordinary steel doors and windows

required opening for frames, hold fasts etc. shall be left in the wall and frames embedded

later on in order to avoid damage to the frames. Necessary scaffolding shall be provided. The

supports of the scaffolding shall be sound and strong tied together with horizontal pieces

over which the scaffolding planks shall be fixed. Simple scaffolding shall be allowed normally.

In this case scaffolding hole shall rest in hold header horizontal coarse only. Minimum

number of holes shall be left in brick work for supporting horizontal scaffolding holes. The

contractor is responsible for providing and maintaining sufficiently strong scaffolding so as to

withstand all loads likely to come upon it. For the face of brick work where plastering is to be

done joints shall be racked out to a depth not less than thickness of joints. The face of brick

work shall be cleaned and mortar dropping removed on very same day that brick work is laid.

Mode of measurement: The masonry work of G. F. i.e. above plinth level to floor two level

shall be measured and paid under this item. 71 | P a g e Brick work in parapet shall be

included in the corresponding masonry item of store immediately below the floor above

which the parapet is built. No deduction shall be made from quantity of brick work. No extra

payment shall be made for embedding in masonry or making holes in respect of following

items: The rate shall be for a unit of one cubic meter Half Brick Masonary: Providing and

laying brick partition wall of 11.50 cms thick with good quality bricks of the strength not less

than 35 Kg / Sq. c.m. kiln burnt bricks laid in C.M. 1:4 ( 1 Cement and 4 Coarse sand) including

providing 5 cms thick cement concrete bed 1:3:6 ( 1 Cement : 3 Sand : 6 Grit size 6 mm to

mm) after every 8 layers of bricks including racking out the joints , scaffolding, staging curing,

etc. complete as per the standard specifications in true line, level and plumb for super

Signature of Bidder Page 21 of

Ahmedabad Municipal Corporation

structure at any height and level. This includes pointing, curing, necessary scaffolding, tools

etc. complete. Materials: Brick shall conform to M-15. Water shall conform to M-1. Cement

shall conform to M 3. Sand shall conform to M-6. Cement mortar shall conform to M-11.

Workmanship: Relevant specifications of bricks, wetting and laying of bricks, joints, curing

etc. shall conform to item No 13 except the brick work of half bricks shall be carried out.

Cement mortar used in masonry work shall be in proportion of 1 part of cement and 4 part of

sand by volume. All bricks shall be laid strecher wise, breaking joints with those in the upper

and lower courses. The wall shall be taken truly plumb. All courses shall be laid truly

horizontal and all vertical joints shall be truly vertical. The bricks shall be laid with frogs

upwards. A set of masons tools shall be maintained on work as required for frequent

checking. Mode of measurement and payment: The half brick masonry work in foundation

and plinth shall be measured under this item, the limiting dimensions shall not exceed those

shown in the plan or as directed. Any work done extra over the specified dimensions shall be

ignored. The relevant specifications of item No. 6.12 shall be followed. The length shall be

measured nearest to one Cm. The rate shall be for a unit of Sq. Mt.

M/s. shall be on CMT basis.

Item No : 28 Providing15mm thick cement plaster in single coat on Rough (Similar) side of single or half

brickwalls for interior plastering upto floor two level and finished even and smooth in (i) Cement

mortar 1:3 (1-cement:3-sand)

For detailed specification refer R & B Department booklet for General Technical Specification

for building works. Plaster thickness is 15mm.

M/s. shall be on SMT basis.

Item No : 29 Constructing Bombay Pattern Type Catch Pit of size 0.60 x 0.60 depth up to 1 mt including

excavation, B.B.C.C. (1:5:10), 23 cms thick brick maso. wall in the prop. of CM (1:6) with 40 mm

thick IPS flooring in the prop M15 at bottom and 15 mm thick cement plaster inside the catch pit in

the proportion of CM (1:3) with out jali etc. comp. as directed.

Constructing Bombay Pattern Type Catch Pit of size 0.60 x 0.60 depth up to 1 mt including excavation,

B.B.C.C. (1:5:10), 23 cms thick brick maso. wall in the prop. of CM (1:6) with 40 mm thick IPS flooring

in the prop M15 at bottom and 15 mm thick cement plaster inside the catch pit in the proportion of

CM (1:3) with out jali etc. comp. as directed.

M/s. shall be on No basis.

Item No : 30 CatchPit Jali (Heavy duty) Fixing P/F FRC catch pit jali with frame 600mm x 600mm clear

opening etc. comp.. As directed by engineer in charge.

CatchPit Jali (Heavy duty) Fixing P/F FRC catch pit jali with frame 600mm x 600mm clear opening etc.

comp.. The cover and frame both are in heavy duty. No extra cost for the fitting of frame and cover

and carting and lifting will given.

M/s. shall be on No basis.

Item No : 31 Providing, laying and jointing in true line and level UPVC pipe (SCH-40) of following dia.

Including fittings of standard make as approved by Engineer-in-charge. (Building SOR 2023-24, Item

Providing, laying and jointing in true line and level UPVC pipe (SCH-40) of following dia.

Including fittings of standard make as approved by Engineer-in-charge. The pipe is strong and this is

for the small connection work during drainage work. All bend and other solution for the connection of

pipe is include in the cost.

M/s. shall be on Rmt basis.

Signature of Bidder Page 22 of

Ahmedabad Municipal Corporation

Item No : 32 Dismentaling tiled of stone floors laid in mortar including stacking of serviceable materilas

and disposal of unserviceable materials with all lead and lift.

(Based on Building SOR 2023-24, Item No 20005,Page No:- 140)

Dismentaling tiled of stone floors laid in mortar including stacking of serviceable materilas

and disposal of unserviceable materials with all lead and lift.

Rate included with labour and excess disposal machinary used for the same.

M/s. shall be on Smt basis.

Item No : 33 Providing & Supplying Hitachi Machine -110 capacity on rental basis in case of emergency

situation and break down type work & also during unavoidable condition as per instruction of

engg.incharge , rate includes all nece. shifting, fuel and operating charges . (No payment should be

allowed for non working condition of machinery ) (Based on central work shop rate)

Unit shall be in Hour basis.

Item No : 34 Providing & Supplying Hitachi Machine -200 capacity on rental basis in case of emergency

situation and break down type work & also during unavoidable condition as per instruction of

engg.incharge , rate includes all nece. shifting, fuel and operating charges. (No payment should be

allowed for non working condition of machinery ) (Based on central work shop rate)

Unit shall be in Hour basis.

Item No : 35 Providing & Supplying hydra carne Machine of 12 tone capacity on rental basis in case of

emergency situation and break down type work & also during unavoidable condition as per

instruction of engg.incharge , rate includes all nece. shifting, fuel and operating charges . (No

payment should be allowed for non working condition of machinery) (Based on central work shop

Unit shall be in Hour basis.

Item No : 36 Supplying electric breaker machine for RCC slab or asphalt demolishing work on site by using

operator, fuel, power supply etc.complete as directed. (no payment should be allowed for

non working condition of machinery and for pipe line excavation and M.H. work. Allowed

only for break down work)

(Based on Previously approved rate by CE sir )

Unit shall be in Shift basis.

Item No : 37 Supplying Pneumatic Breaker Machine for RCC Slab or Asphalt Demolishing Work on site by

using Operator, fuel, power Supply etc. Complete as Directed. (No payment should be

allowed for non working condition of machinery and for pipe line excavation and M.H. work.

Allowed only for break down work) (Based on Previously approved rate by C E sir )

Unit shall be in Shift basis.

Item No : 38 Hiring of tractor with trolley considering 8 Hrs. as working day hours incl.Driver (GWSSB SOR

Hiring of tractor with trolley considering 8 Hrs. as working day hours incl.Driver

Item No : 39 Hiring of Three wheeler carrier (Chakado/Rixa) considering 10 Hrs. as working day hours

incl.Driver (GWSSB SOR 2021-22)

Hiring of Three wheeler carrier (Chakado/Rixa) considering 10 Hrs. as working day hours

incl.Driver (GWSSB SOR 2021-22)

Item No. 40 Providing and Laying of Rubber Moulded Paver Block Grey/Coloured 60 mm thick, M-35 Grade of any

size ; shape (Usually Uni-Paver Blocks) using black trap good quality aggragate of 20 mm nominal size

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Ahmedabad Municipal Corporation

for footpath, parking areas, service lanes and other areas as mentioned in the

drawing/instruction of engineer in charge. Cost includes formworks using rubber mould, Rate

providing and laying paver blocks as per required grading and specification. The paver block shall be

mechanically compacted. The work of paving blocks shall be executed in line and level by skill

mason of flooring work only. It should be laid in such a way that the no cutting of the paver block to be

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

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

compacted and shall be relaid if necessary. Gravel or such type of materials shall not be allowed for

production. Laying on 5cms thick sand beddding.

The scope of work includes manufacturing, supplying and laying of precast paver blocks at various Retail

outlets. The work includes :Verification of the existing site condition and advising our project in charge to

lay suitable base course if required.

Contractors are required to satisfy themselves with quality of sub grade, sub -base course before the

paver blocks are laid and suggest strengthening if required.

Clearing the site by removing all obstacles such as stones, debris etc. for laying of paver

blocks.Manufacturing of paver blocks in your plant as per requirements in technical specification

enclosed.Supplying of paver blocks at site, including handling at both ends.

Laying of paver blocks at site as per requirement in technical specification, within shortest possible time

the site is public place hence care should be taken to ensure that the routine activities shall not be

disturbed. The job of laying may required to be carried out during night also.

Testing of paver blocks through reputed Govt./Non Govt. Test house and submission of test results as per

requirements in Technical Specifications. AMC reserves the right to carryout test at random. Cost for

such tests to be borne by party.The contractor shall guarantee that all material and components

designed, fabricated, supplied and laid by him shall be free from any type of defect due to faulty material

and/or workmanship/erection for a period of One year from the date of completion of work. However,

the contractor One years shall render free mintenance.

I) Paver Block Manufacturing Facilities :

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

1.1 Concrete Block making Machines :

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

compaction by application of hydraulic compaction and also by high intensity vibration to the moulds.

The machine should have automatic control panel for uniformity in strength.

1.2 Concrete Batching & Mixing Plant : (Not essential)

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

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

equipped with automatic control panel for maintaining water cement ratio from batch to batch to obtain

concrete of uniform quality and strength.

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

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

maintain quality of wet cement.

The factory should have well designed curing area to ensure adequate curing of paver blocks.

1.4 Laboratory (Desirable but not essential) :

The factory should have the following:

Compression testing machine of adequate capacity.

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

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

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

II) SPECIFICATIONS FOR COLOURED PAVER BLOCKS :

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

colour Pigment of “BAYER” Make “BAYFERROX IRONOXIDE PIGMENTS” with minimum colour pigment of

3% by weight of cement. The colour shade shall be “RED” as selected by AMC before commencement of

the work. White cement shall be used for colored pavers to obtain the desired colour shade. The job also

includes providing 50 mm thick sand bedding to match the shade of the paver block.

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

the date of laying of the same at site.

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

per attachment.

III) PAVERS BLOCK CHARACTERISTICS :

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

retained until the laying.

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

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

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

after vibration on the paver S urface.

The concrete mix design should be followed for each batch of materials separately and automatic

batching plant is to be used to achieve uniformity in strength and quality.

The pavers shall be manufactured in single layer only.

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

the surface and adequate compaction of the sand in the joints.

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

“specifications for coloured pavers.”

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

380mm. The kerbing should be embedded for 100mm depth. The concrete used for kerbing shall be

cured properly for 7 days minimum.

IV) Paver Block Dimensions :

Thickness 60mm Shape Unirregular (Uniform Shape with no Hollow Or Cracks) Uni, I shape, tri hex or

directed by Addl .C.E.

Chamfer 4mm to 6mm along top edges Colour Natural cement grey colour without use of any pigment.

For coloured pavers refer “specifications for coloured pavers”

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

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

V) Testing of Paver Blocks :

(Average of Minimum

Five Samples/Site)

1. Compressive Strength Min. 35 N/Sqmm for 60mm

2. Flexural Strength Minimum 4.5 N/Sqmm

3. Abrasion Resistance Maximum

4. Water Absorption Maximum 5.80%

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Ahmedabad Municipal Corporation

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

* Sampling and Testing procedure as per enclosed specifications

SAMPLING AND TESTING PROCEDURES FOR PAVER BLOCKS.

INTERNAL – Average of minimum 3 samples per 5000 Blocks.

Essential – Minimum 2 Blocks per 10000 bocks..

1. Sampling For Testing

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

Compressive Strength

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

The average compressive strength of the bocks tested shall be Min. 35 N/Sqmm.

Abrasion Resistance

Testing for abrasion shall be in accordance with IS 1237 (Specifications for Cement

Concrete Floor Tiles) – Appendix C.

Flexural Strength

Testing for flexural shall be n accordance with IS 1237 (Specifications for Cement

Concrete Floor Tiles) – Appendix D.

Water Absorption

Testing for water absorption shall be in accordance with IS 2185:1979 : Part I

(Specifications for Concrete Masonry Units) – Appendix E.

Sampling of Paver blocks.

Method of sampling :

Before laying paver blocks, each designated section comprising not more than

blocks, shall be divided into ten approximately equal groups. Three blocks shall be drawn

from each group.

Marking and identification :

All samples shall be clearly marked at the time of sampling in such a way that the

designated section of part thereof, and the consignment represented by the sample, are

clearly defined.

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

damage to the paving in transit. Protect the paving from damage and contamination until

they have been tested. The testing shall be carried as soon as possible, after the sample

has been taken. As soon as practicable after sampling. The samples shall be stored in

water at 20 degree C ± 5 degree C for 24 hours prior to testing.

The mode of measurement shall be on Smt. basis.

Item No : 41 Providing and laying cement concrete 1:5:10 (1- Cement : 5- fine sand : 10- graded brick bat

aggregates 40mm nominal size) and curing complete excluding cost of formwork in (A)

Foundation and Plinth

(Building SOR 2023-24 Item Code No. 05009A , as per NBO Item No. 5.8.3; Page no. 56)

1.0 Materials: Water shall conform to M-1. Cement shall conform to M-3. Sand shall conform to M-6, Grit

shall conform to M-8 Graded stone aggregate 20 mm nominal size shall conform to M-12.

2.1 The concrete mix is not required to be designed by preliminary tests. The proportion of the concrete

mix shall be 1:2:4 (1 cement :2 coarse sand : 4 graded stone aggregate 10 mm nominal size) by

volume. Concrete work shall have exposed concrete surface or as specified in the item.

2.2 The designation ordinary M-100, M-150, M-200, M-250 specified as per I.S Correspond

approximately to 1:3:6, 1:2:4, 1 1/2 :3 and 1:1:2 nominal mix of ordinary concrete by volume

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2.3 The ingredients required for ordinary concrete containing one beg of cement of 50 Kg. by weight

(0.0342 Cu. M) for different proportions of mix shall be as under:-

Grade of Total quantity of dry Proportion of fine Quantity of

concrete aggregate by volume per 50 aggregate to coarse water per

Kgs, of cement to be taken as aggregate 50 Kgs. of

the sum of individual volume cement

of fine and coarse maximum.

aggregates, maximum

M-100 (1:3:6) 300 Liters Generally 1:2 for fine 34 Liters

aggregate by volume

M-150 (1:2:4) 220 ” but subject to and upper 32 “

limit of 1:1/2 and lower

2.5 The water cement ratios shall not more than those specified in the above table. The cement content

of the mix specified in the Table shall be increased if the quantity of water in a mix has to be

increased to overcome the difficulties of placement and compaction so that the water cement ratio

specified in the Table is not exceeded.

2.6 Work ability of the concrete shall be controlled by maintaining a water cement ratio that is bound to

give a concrete mix which is just sufficiently wet to be placed and compacted without difficulty with

the means available.

2.7 the maximum size of coarse aggregate shall be as large as possible within the limits specified but in no

case greater than surround all reinforcement thoroughly and to fill the corners of the form.

2.8 For reinforced concrete work, coarse aggregates having a nominal size of 20mm are generally

considered satisfactory.

2.9 For heavily reinforced concrete members as in the case of ribs of main beams the nominal maximum

size of coarse aggregate should usually be restricted to 5 mm less than the minimum clear distance

between the main bars, or 5 mm less than the minimum cover to the reinforcement whichever is

2.10 Where the reinforcement is widely spaced as in solid slabs, limitations of size of the aggregate may

not be important and the nominal maximum size may sometimes be as greater than the minimum

2.11 Admixture may used in concrete only with approval of Engineer-in-charge based upon the evidence

that with the passage of time, neither the compressive strength of concrete is reduced nor are other

requisite qualities of concrete and steel impaired by the use of such admixtures.

3.0 Workmanship:

3.1 Proportioning: Proportioning shall be done by volume, except cement which shall be measured in

terms of bags of 50 Kg. weight. The volume of one such bag being taken as 0.0342 Cu. Meter. Boxes of

suitable sizes shall be used for measuring sand aggregate. The size of the boxes (internal) shall be

cms x 25 cms. and 40 cms deep. White measuring the aggregate and sand, the box shall be filled

without shaking ramming or hammering. The proportioning of sand shall be on the basis of its dry

volume and in case of damp sand, allowances for bulkage shall be made.

3.2.1 For all work, concrete shall be mixed in a mechanical mixer which along with other accessories shall

be kept in first class working condition and so maintained throughout the construction. Measured

quantity of aggregate, sand, cement required for each batch shall be poured into the drum of the

mechanical mixer while it is continuously running. After about half a minute of dry mixing, measured

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Ahmedabad Municipal Corporation

quantity of water required for each batch of concrete mix shall be added gradually and mixing

continued for another one and half a minute. Mixing shall be continued till materials are uniformly

distributed and uniform color of the entire mass is obtained and each individual particle of the coarse

aggregate shows complete coating of mortar containing its proportionate amount of cement. In no

case shall the mixing be done for less than 2 minutes after all ingredients have been put into the

3.2.2 When hand mixing is permitted by the Engineer-in-charge for small jobs or for certain other reasons,

it shall be done on the smooth watertight platform large enough to allow efficient turning over the

ingredients of concrete before and after adding water. Mixing platform shall be so arranged that no

foreign material gets mixed with concrete nor does the mixing water flow out. Cement in required

number of bags shall be placed in a uniform layer on top of the measured quantity of fine and coarse

aggregate, which shall also be spread in a layer of uniform thickness on the mixing platform. Dry

coarse and fine aggregate and cement shall then be mixed thoroughly by turning over to get a

mixture to uniform color. Specified quantity of water shall then be added gradually through a rose-

can and the mass turned over till a mix of required consistency is obtained. In hand mixing quantity of

cement shall be increased by 10 percent above that specified.

3.2.3 Mixers which have been out of use for more than 30 minutes shall be thoroughly cleaned before

putting in a new batch. Unless otherwise agreed to by the Engineer-in-charge the first batch of

concrete from the mixture shall contain only two thirds of normal quantity of coarse aggregate.

Mixing plant shall be thoroughly cleaned before changing from one type of cement to another.

3.3 Consistency :

3.3.1 The degree of consistency which shall depend upon the nature of the work and methods of vibration

of concrete, shall be determined by regular slump tests in accordance with I.S. 1199-1959. The slump

of 10mm to 25mm. shall be adopted when vibrators are used and 80mm when vibrators are not used.

3.4 Inspection:

3.4.1 Contractor shall give the Engineer-in-charge due notice before placing any concrete in the forms to

permit him to inspect and accept the false work and forms as to their strength, alignment, and

general fitness but such inspection shall not relieve the contractor of his responsibility for the safety

of men, machinery, materials and for results obtained. Immediately before concreting, all forms shall

be thoroughly cleaned.

3.4.2 Centering design and its erection shall be got approved from the Engineer-in-charge. One carpenter

with helper shall invariably be kept present throughout the period of concreting. Movement of labour

and other persons shall be totally prohibited for reinforcement laid in position. for access to different

parts, suitable mobile platforms shall be provided so that steel reinforcement in position is not

disturbed. For ensuring proper cover, mortar blocks of suitable size shall be provided so that steel

reinforcement in position is not disturbed. For ensuring proper cover, mortar blocks of suitable size

shall be cast and tied to the reinforcement. Timber kapachi or metal pieces shall not be used for this

3.5 Transporting and laying:

3.5.1 The method of transporting and placing concrete shall be as approved. Concrete shall be so

transported and placed that no contemination, segregation or loss of its constituent material takes

All form wok shall be cleaned and made free from standing water, dust, show or ice immediately

before placing of concrete.

No concrete shall be placed in any part of the structure until the approval of the Engineer-in-charge

has been obtained.

3.5.2 Concreting shall proceed continuously over the area between construction joints. Fresh concrete shall

not be placed against concrete which has been in position for more than 30 minutes unless a proper

construction joint is formed. Concrete shall compacted in its final position within 30 minutes of its

discharge from the mixer. Except where otherwise agreed to by the Engineer-in-charge concrete shall

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be deposited n horizontal layers to a compacted depth of not more than 0.45 meter when internal

vibrators are used and not exceeding 0.30 meter in all other cases.

3.5.3 Unless otherwise agreed to by the Engineer-in-charge, concrete shall not be dropped into place from

a height exceeding 2 meters. When trunking or chutes are used they shall be kept close and used in

such a way as to avoid segregation. When concreting has to be resumed on a surface which has

hardened, it shall be roughened, swept clean, thoroughly wetted and covered with a 13 mm thick

layer of mortar composed of cement and sand in the same ratio as in the concrete mix itself. This

mm layer of mortar shall be freshly mixed and placed immediately before placing of new concrete.

Where concrete has not fully hardened, all laitance shall be removed by scrubbing the wet surface

with wire or bristle brushes, care being taken to avoid dislodgment of any particles of coarse

aggregate. The surface shall then be thoroughly wetted, all free water removed and then coated with

neat cement grout. The first layer of concrete to be placed on this surface shall not exceed 150 mm in

thickness and shall be well rammed against old work particular attention being given to corners and

3.5.4 All concrete shall be compacted to produce a dense homogeneous mass with the assistance of

vibrators, unless, otherwise permitted by the Engineer-in-charge for exceptional cases, such as

concreting under water, where vibrators cannot be used. Sufficient vibrators in serviceable condition

shall be kept at site so that spare equipment is always available in the event of breakdowns.

Concrete shall be judged to be compacted when the mortar fills the spaces between the coarse

aggregate and begins to cream up to form an even surface. Compaction shall be completed before

the initial setting starts i.e. within 30 minutes of addition of water to dry mixture. During compaction,

it shall be observed that needle vibrators are not applied on reinforcement which is likely to destroy

the bond between concrete and reinforcement.

3.6 Curing: Immediately after compaction, concrete shall be protected from weather including rain,

running water, shocks, vibration, traffic, rapid temperature changes, frost and drying out process. It

shall be covered with wet sacking, hassain or other similar absorbant material approved, soon after

the initial set and shall be kept continuously wet for a period of not less than 14 days from the date of

placement. Masonary work over foundation concrete may be started after 48 hours of its laying but

curing of concrete shall be continued for a minimum period of 14 days.

3.7 Sampling and Testing of concrete:

3.7.1 Samples from fresh concrete shall be taken as per I.S. 1199-1959 and cubes shall be made, cured and

tested at 7 days or 28 days as per requirements in accordance with I.S. 516-1959. A random sampling

procedure shall be adopted to ensure that each concrete batch shall have a reasonable chance of

being tested i.e. the sampling should be spread over the entire period of concreting and cover all

mixing units. The minimum frequency of sampling of concrete of each grade shall be in accordance

with following:

Quantity of concrete No. of Quantity of concrete in the No. of samples

in the work samples works

51 and above 4+ one additional for each additional 50 M. or part thereof.

NOTE : At least one sample shall be taken from each shift. Ten test specimens shall be made from each

sample, five for testing at 7 days and the remaining five at 28 days. The samples of concrete shall be

taken on each day of the concreting as per above frequency. The number of specimens may be

suitably increased as deemed necessary by the Engineer-in-charge when procedure of tests given

above reveals a poor quality of concrete and in other special cases.

3.7.2 The average strength of the group of cubes cast for each day shall not be less than the specified cube

strength of 150 Kg/Cm2 at 28 days. 20% of the cubes cast for each day may have value less than the

specified strength provided the lowest value is not less than 85% of the specified strength. If the

concrete made in accordance with the proportions given for a particular grade, does not yield the

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Ahmedabad Municipal Corporation

specified strength; such concrete shall be classified as belonging to the appropriate lower grade.

Concrete made in accordance with the proportions given for a particular grade shall not, however, be

placed in a higher grade on the ground that the test strength are higher than the minimum specified.

3.8.1 The Engineer-in-charge shall be informed in advance by the contractor of his intention to strike the

form work. While fixing the time for removal of form work, due consideration shall be given to local

conditions, character for the structure, the weather and other condition that influence the setting of

concrete and of the materials used in the mix. In normal circumstances (generally where

temperatures are above 200 C) and where ordinary concrete is used, forms may be struck after expiry

of periods specified in item No 9.1(A) for respective item of form work.

3.8.2 All form work shall be removed without causing any shock or vibration as would damage the

concrete. Before the soffit and struts are removed, the concrete surface shall be exposed, where

necessary in order to ascertain that the concrete has sufficiently hardened. Centering shall be

gradually and uniformly lowered in such manner as to permit the concrete to take stresses due to its

own weight uniformly and gradually. Where internal metal ties are permitted, the or their removable

parts shall be extracted without causing any damage to the concrete and remaining holes filled with

mortar. No permanently embedded metal part shall have less than 25 mm cover to the finished

concrete surface. Where it is intended to re-use the form work, it shall be cleaned and made good to

the satisfaction of the Engineer-in-charge. After removal of form work and shuttering, the Executive

Engineer shall inspect the work and satisfy by random checks that concrete produced is of good

3.8.3 Immediately after the removal of forms, all exposed bolts etc., passing through the cement concrete

member and used for shuttering or any other purpose shall be cut inside the cement concrete

member to a depth of at least 25 mm below the surface of the concrete and the resulting holes be

filled by cement mortar. All fine caused by form joints, all cavities produced by the removal of form

ties and all other holes and depressions honeycomb spots, broken edges or corners and other defects

shall be thoroughly cleaned, saturated with water and carefully pointed and rendered true with

mortar of cement and fine aggregate mixed in the proportions used in the grade of concrete that is

being finished and of as dry consistency as is possible to use. Considerable pressure shall be applied in

filling and pointing to ensure thorough filling in all voids. Surfaces which are pointed shall be kept

most for a period of 25 hours.

If rock pockets/honeycombs in the opinion of the Engineer-in-charge are of such an extent or

character as to effect the strength of the structure materially or to endanger the life of the steel

reinforcement, he may declare the concrete defective and require the removal and replacement of

the portion of the structure affected.

4.0 Mode of measurement and payment:

4.1 The consolidated cubical contents of concrete work as specified in item shall be measured. The

concrete laid in excess of section shown on drawings or as directed shall not be measured. No

deduction shall be made for –

(a) Ends of dis-similar materials such as joints, beams, posts, girders, rafters, purline trusses, corbels and

steps etc. up to 500 Sq. Cm. in section.

(b) Opening up to 0.1 Sq. M.

4.2 The rate includes cost of all materials, labour, tools and plant required for mixing, placing in position,

vibrating and compacting, finishing, as directed, curing and all other incidental expenses for

producing concrete of specified strength. The rate excludes the cost of form work.

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