repairing renovation work and fire related work at shri c.h.nagari eye hospital building campus.re invite

Name Of Work :- અ. િુ ન. કોપ ારા સંચા લત ી સી.એચ. નગર

(1) Date of download Tender Documents : From website on

https://tender.nprocure.com/.

(2) Last date of online Tender Submission : Dt:13.08.2026 Up to 18.00 hours

(3) Dt. 14.08.2026 Up to 16.00 hours by Speed

Last Date of submission of Blank Post or Registered Post AD, by courier or

tender document, EMD & Tender Fee :

and Other documents.

(4) Date of E-Tender Opening : To be intimated after technical bid

VOLUME - I (TECHNICAL BID)

Municipal Commissioner

Ahmedabad Municipal Corporation

Sardar Patel Bhavan

Ahmedabad – 380

Gujarat (INDIA)

MEMORANDUM OF WORK IN BRIEF

: Name Of Work :- અ. િુ ન. કોપ ારા

A.2.1 Name of Work

A.2.2 Estimated Cost : Rs:-

A.2.3 Earnest Money :

A.2.4 Tender Fee : Rs.2400- Demand Draft in favor of

Municipal Commisioner, payable at

A.2.5 Validity Period of Tender offered : 120 days from the date of opening of the price

A.2.6 Security Deposit : 5% of the contract value in the form of bank

Guarantee/Demand Draft. as per AMC circular

A.2.7 Time allowed for completion of the : (1) 11 months Including of monsoon period

work from the date of written order to (2)If the site is not cleared to start the work,

commence the time limit will be considered from the date

of possession given to start the work.

i) Tender documents can be download : website.https://tender.nprocure.com/

from nprocure website

ii) Date for downloading of tender : -

iii) Last date of online Tender : Dt: 13.08.2026 Up to 18.00 hours

iv) Last Date of submission of Blank : Dt. 14.08.2026 Up to 16.00 hours

tender document, EMD & Tender Fee

and Other documents.

v) Date of E-Tender Opening : To be intimated after technical bid evaluation

A.2.8 Mode of submitting the filled up (i) Speed Post or Registered Post AD, by

A.2.9 Description essential to be made on : a) Name of work :

sealed cover b) Contact No :

c) Last date of Receiving tender by

A.2.10 Mode of quoting rate Online only

A.2.11 Execution of work : Work shall start and progress simultaneously

as per the priority and as directed by

Engineers-in-charge.

Payable at Ahmedabad is enclosed herewith

representing the earnest money, the full value

of which is to be absolutely forfeited by AMC,

should I / We not deposit the full amount of

security deposit specified above.

A2.13 liquidated damages 0.1% of the remaining value of work per day

Compensation For Delay from the date of delaying the said work subject

to the maximum amount of ten percentage of

the remaining amount of tender work.

A2.14 Deduction of Retention Retention

Money from each RA Bill @ 2% of the value of work done will be

deducted from each RA bill. It will be

released along with release of payment of

CONTRACTOR’S SIGN ADDL.CITYENGINEER

(AMCMET-HOSPITAL)

NOTICE INVITING TENDER

Sub: Name Of Work :- અ. િુ ન. કોપ ારા સંચા લત ી સી.એચ. નગર

A.3.1 The Municipal Commissioner/

Chairman of Ahmedabad Municipal Corporation (AMC)Medical Education Trust

invites the percentage rate tenders (Two -bid system) from the prosperous,

experienced bidders for Name Of Work :- અ. િુ ન. કોપ ારા સંચા લત ી

A.3.2 Tender document containing Technical Bid and Financial Bid. (Two -bid system)

A.3.3 Tender document containing Technical Bid and Financial Bid along with conditions of

contract can be downloaded from the website https://tender.nprocure.com/Bidders shall

have to present D.D. of Rs.2400/-as tender fee along with the tender or have to deposit

Rs.2400/- along with tender at the time of submitting the tender to Admin Office (AMC

MET/ Hospital).

A.3.4 Each tender must be accompanied by a receipt for a DD, or bank guarantee (Earnest Money)

on required stamp paper from the Bank, acceptable to the Corporation for Rs.83,084.00

All the Bidders have to submit the bank guarantee as specified in the tender document.

A.3.5 The successful Bidder shall have to pay security deposit in Indian Rupees for the quoted

amount in the form of demand Draft.

A.3.6 The Earnest Money of the unsuccessful Bidder(s) will be returned by AMC MET/Hospital,

after the award of this contract has been finalized.

A.3.7 Two sets of tender documents (including drawings and addendum if any), duly completed

in all respects, document fees, EMD and other documents required, (hard copy of original

certificate, data sheets, company details, forwarding letters etc.) shall be submitted in

sealed envelope to AMC so as to reach before 16.00 hours on or before Dt. 14.08.2026

at the following address by Courier, Registered Post AD or Speed Post .

AMC Medical Education Trust,

NHL Medical College,

Nr.Ellisebridge,SVP Hospital Campus,

Paldi, Ahmedabad Municipal Corporation,

A.3.8 The Bidder shall clearly state in the forwarding letter (in duplicate) to be enclosed with the

tender documents, the deviations from General Terms and Conditions, if any with cross

references. If no such letter is received, it will be presumed that the Bidder agrees entirely

with the General Terms and Conditions.

A.3.9 Challan for earnest money must accompany the tender. Bidder may pay earnest money in the

form of Demand Draft of a local Bank drawn in favour of the Municipal Comissioner

Ahmedabad at Ahmedabad . Earnest money in cash or by cheque shall not be accepted.

A.3.10 Tenders received without EMD will be considered as Non-Responsive and will be rejected

A.3.11 The conditional tender will not be accepted and will be rejected outright, unless, the nature of

condition(s) put for by the bidder is acceptable to AMC. Any suggestions/ alterations from

the tender specifications, if suggested, must be mentioned in the main forwarding letter.

A.3.12 The Bidder shall quote (+/-) percentage in schedule of quantities and rates both in figures

and words in tender of the tender document (Financial Bid) Online only.Financial bids are

opened online only for bidders who are technically qualified.

A.3.13 The Bidder shall have to attach the following documents in duplicate with the tender :

i) A true copy of registration as an approved Contractor minimum‘D’ Class, Registered

with AMC, State and Central Government and other Corporations / Boards.

A.3.14 Incomplete tender which does not fulfill any of the above conditions will be liable for

rejection. Tender will also be liable to be rejected if –

i) The Bidderproposes any alteration in the work specified or in the time allowed in

carrying out the works or make corrections in Schedule of Quantities.

ii) Any of the page or pages in the tender is / are removed or replaced.

iii) The (+/-) percentage is not entered in ink, in figures and words in schedule of

quantities and rates as also amount in figures is not written and signed (Online)

iv) All corrections, additions or pasted slips are not initialed by the Bidder.

v) Any erasure is made in the tender.

vi) The Bidder or in the case of a firm, each partner or the person holding the power of

attorney thereof does not sign or the signature(s) is (are) not attested by the witness,

wherever it is required.

vii) The Bidder returns the tender document without signing relevant pages of the bid.

A.3.15 Acceptance of the tenders will rest with the competent authority who does not bind himself

to accept the lowest tender and reserves the right to reject any or all tenders without

assigning any reason thereof.

A.3.16 It must be clearly and distinctly understood that the conditions of contract and specifications

shall be rigidly enforced and no relaxation on the grounds of customs prevailing shall be

A.3.17 All charge on account of Octroi ,excise duties, terminal tax, sales tax. Service tax, VAT

(exculding GST) etc. on material procurement or any other component for the works from

any source shall be borne by the contractors.

A.3.18 The Bidder shall be considered to have visited the site of work, fully acquainted himself with

the local situations regarding materials, labour and other factors pertaining to work.

A.3.19 In the event of a discrepancy between description in words and figures quoted by the Bidder,

the description in words shall prevail.

A.3.20 The tender for the work shall remain open for a period of 120 days from the date of opening

of the price bid and the Bidder shall not be allowed to withdraw or modify the offer on his

own during this period any modifications or additions in terms and conditions of his

tender not acceptable to the Addl. City Engineer (Hospital/AMC MET), The Addl. City

Engineer (Hospital/AMC MET) shall without prejudice to any right or remedy, be at liberty

to forfeit in full the said earnest money absolutely.

A.3.21 The Corporation reserves the right to reject all the tenders of the lowest or any other tender

which in the judgment of the corporation does not appear to be in its best interest and the

Bidders shall have no cause of action or claim against the Corporation of its officers,

employees, successors for assignees for rejection of its tender. The Municipal

Commissioner/Chairman does not bind himself to accept the lowest or any tender. Tender

documents are not transferable.

A.3.22 The Bidder, if directed by the Engineer in charge; shall increase or decrease the strength of

the labor both skilled and unskilled.

A.3.23 The Bidder shall strictly observe all the requirements laid down in the Contract Labour

(Regulation and abolition) Act, 1970 and the Contract Labour (Regulation and Abolition)

(Gujarat) Rules, 1972 and other acts as amended from time to time so far as applicable. The

Bidder should obtain necessary permission, license and registration from the labour

commissioner, as per labour law.

A.3.24 The work is to be completed in all respects within 11 months Including monsoon, reckoned

from the date of written order to commence the work. If the site is not cleared to start the

work,the time limit will be considered from the date of possession given to start the work.

A.3.25 The Biddershall carefully read the eligibility criteria, furnish the details and satisfy the same;

otherwise the tender will be rejected without assigning any reason.

A.3.26 The Bidder is required to check the n procure before 48 hours of tender submission date and

time. The Bidder who quotes the tender without attaching the addendum will be rejected.

A.3.27 This notice will form part of the Contract. Bidder should have registered his class in

Ahmedabad Municipal Corporation within six months after allocation of the work.

Signature of Contractor Addl. City Engineer (AMC MET/HOSPITAL)

Name : Ahmedabad Municipal Corporation

Company’s seal :

QUALIFICATION CRITERIA FOR BIDDERS

A.5.1 Eligibility Criteria

A.5.1.1 Qualification will be based on meeting all the following minimum pass/fail criteria

regarding the bidder’s general and particular experience, personnel and equipment

capabilities, and financial position, as demonstrated by the bidder’s responses in

the forms attached. The bidder should be registered in ‘D’class with AMC, State

and Central Government and other Corporations / Boards. The AMC reserves the

right to waive minor deviations, if they do not materially affect the capability of a

bidder to perform the contract. Experience as sub-contractor, back-to back &joint

venture will not be considered for eligibility.

 Bidder should have registered his class in Ahmedabad Municipal Corporation within

six months after allocation of the work.

A.5.2 General Experience

A.5.2.1The bidder shall meet with following minimum criteria:

i) The bidders shall have the financial capability and having annual average

turn over for the last 3 years should be minimum Rs. 83.08 Lacs.

ii) Experience of having successfully completed similar works in last 7 (seven)

years as under.

a. Three similar completed works each costing not less than the amount

equal to 40 % of the estimated cost.

b. Two similar completed works each costing not less than the amount

equal to 50 % of the estimated cost.

c. One similar completed works each costing not less than the amount

equal to 80 % of the estimated cost.

iii) The bidder shall arrange for the ISI certification on each pipe produce for

this work. All the pipes shall be ISI marked. The bidder shall submit the

documents accordingly showing the proof of pipes with ISI at no. extra cost.

A.5.3 Financial Position

A.5.3.1 The audited balance sheets for the last three years should be submitted and must

demonstrate the soundness of the bidder’s financial position, showing profitability.

A.5.3.2 Minimum Net worth of 25 % of estimated cost of tender during last financial year.

A.5.4 Litigation History

A.5.4.1 (1) The bidder shall provide accurate information on any litigation history or

arbitration resulting from contracts completed or under execution by him over

the last ten years. This should also include such cases, which are in process /

progress. If the bidder has any such history & has come to the notice of the

Authority, the tender shall be rejected.

(2) If the bidder has any litigation history or case or has not completed any work,

Ahmedabad Municipal Corporation can disqualify the bidder.

A.5.5 Solvency Certificate

A.5.5.1 Every Bidder shall produce along with their tender, a solvency certificate (of an

amount upto 20% of the tendered Estimated cost) or his financial stability from the

collector of the district within which he resides or a Banker’s Certificate. If he fails

to produce such a certificate, his tender will not be considered. This certificate

shall be enclosed in the Envelope. Bank solvency shall not be older than one year

period from the date of bidding.

A.5.6 Bidding Capacity

A.5.6.1 Assessed Available Bid Capacity = (2AN – B), where.

A = Maximum value of sum of all the contracts executed in any one year during

last three years (updated to the current price levelby giving weightage of 10%

for previous years) which will take into account the completed as well as

work in progress:

B = Value of the existing commitments and on-going works to be completed

during the next two years and

N = Number of years prescribed for completion of the works for which the bids

Note : 1. The statements showing the value of existing commitments and

ongoing works as well as the stipulated period of completionremaining

for each of the works listed should be countersigned by the Contractor.

2. An Affidavit duly notarized on Rs. 300/- stamp paper showing all

ongoing works shall have to be enclosed while bidding for this work.

The bid capacity arrived based on above criteria shall be minimum

A.5.6.2 Even though the bidders meet the above criteria, they are subject to be rejected,

 made misleading or false representation in the form, statements and

attachments submitted, and / or

 Record of poor performance such as abandoning the work, not properly

completing the contract, inordinate delays in completion, litigation history,

or financial failures etc.

A.5.7 Joint Ventures - Deleted

Signature of Contractor Addl. City Engineer (AMCMET/HOSPITAL)

Name : Ahmedabad Municipal Corporation

Company’s seal :

GENERAL CONDITIONS

1. Acceptance of the tenders will rest with the competent authority that does not bind himself to

accept the highest offer tender and reserves the right to reject any or all tenders without assigning

any reason thereof.

The Tender has been prepared Name Of Work :- અ. િુ ન. કોપ ારા

AMC reserves the right to award the tender in part or in whole depending on the quoted

amounts for the tender.

2. Bidder to note that in case of award of contract to him, he is required to deposit with AMC the

5% of Tender amount quoted by him in the financial bid for the tender before starting of the

3. In the event of a discrepancy between description in words and figures quoted by the Bidder, the

description in words shall prevail.

4. The Bidder shall be considered to have visited the site of work, fully acquainted himself with the

local situation regarding materials, labour and other factors pertaining to work and studied the site

before submitting the tender.

5. From the date of opening of the price bid, the tender for the work shall remain open for a period

of 120days. The Bidder shall not be allowed to withdraw or modify the offer on his own during

any modifications or additions in terms and conditions of his tender not acceptable to the

Additional City Engineer. The Additional City Engineer (Hospital/AMC MET) shall without

prejudice to any right or remedy, be at liberty to forfeit in full the said earnest money absolutely.

7. Each tender must be accompanied by DD, or bank guarantee will be accepted will drawn in

favour of Municipal Commisioner Ahmedabad

8. Tenders not accompanied by Earnest Money as required shall be rejected as non-responsive.

9. If during the tender validity period, the Bidder withdraws his tender or the successful Bidder fails

to accept the contract within 30 calendar days after receiving the award of contract and fails to

submit contract deposit, the Earnest Money shall be forfeited and the Bidder may be disqualified

from tendering for further works with the Municipal Corporation of Ahmedabad.

10. After the award has been finalised, the Earnest Money will be returned to the respective Bidders,

with the exception of the successful Bidder.

11. No interest will be paid on any tender deposit/guarantee/ Earnest money.

12. Erasures and other changes shall be initialled by the person signing the tender.

13. Bidders are requested to sign on all the pages of submission including addendum if any and

Tender Guarantee Form, Form B1. Schedule of Quantities and Rates, etc. after making

appropriate enquiries wherever necessary.

14. Tenders shall be deemed to be under consideration from the opening of tenders, until such time as

an official announcement of award is made.

15. While tenders are under consideration, Bidders and their representatives, or other interested

parties, are advised to refrain from contacting by any means any Corporation personnel or

representatives on matters relative to the tenders under study. The Engineer’s Representative, if

necessary, will obtain clarification of tenders by requesting such information from any or all the

Bidders either in writing or through personal contact, as may be necessary. The Bidder will not

be permitted to change the substance of his tender after tenders have been opened. This includes

any post tender price revision or major modification. Non-compliance with this provision is a

cause for disqualification.

16. The Corporation will not defray the expenses incurred by Bidders in rendering and will not

be bound to accept the highest or any tender.

17. Water Supply: The contractor shall arrange at his own cost, a suitable supply of piped water for

the construction of the works and provide a satisfactory supply of potable water for drinking,

washing, sanitation and cleaning down. The contractor will be responsible for all the costs where

applicable of connection, meter installation, water consumed, water required for testing purposes,

disconnection and the laying, maintenances and ultimate removal of any distribution system

around the site.

18. Electricity: Electric supply will be made available at the site by the Contractor and the contractor

must make his own arrangements with the Corporation and Electricity Supply Authorities and

with other contractors to connect and to take a supply from such services, paying all costs in

connection therewith.

The Contractor shall be entitled to use supply Electricity as may be available on the site for

purpose of the work and shall pay such charges as is fixed by the appropriate supply Authorities.

In case there is any delay in supply of power site of any interruption or fault in the power during

the work. No compensation shall be paid for idle labor staff, machineries and for use of diesel

operating sets etc. as the case may be.

19. Tenders shall submit all the valid/certified documents in support of their initial/eligibility criteria

mentioned above along with the bid. They shall have also to submit the income tax clearance

certificate and solvency certificate.

20. No advance such as secured advance machinery advance, mobilization advance or materials

advance will be given.

21. The contractor shall get the electrical works executed through the authorized Government

approved licensed electrical person or firm in appropriate category in accordance to contractual

22. The electrical works shall be carried out strictly in accordance with the directives issued by

Engineer in charge.

23. Contractors shall not have any dispute or claim for any kind of compensations

a. If the quantity stipulated in the tender items varies or the scope of work changes &

thereby total amount of work increases/ decreases.

thereby total amount of work increases/ decreases.

b. If the work gets delayed/ postponed for some administrative/ technical decision what so

24. In case of any dispute, decision of Municipal Commissioner/Chairman shall be final and binding

on the contractors.

25. Tenders which do not fulfill all or any of conditions or are submitted incomplete in any respect

will be rejected. Municipal Commissioner/Chairman reserves the right to increase/decrease the

scope of work. No any claim to that effect shall be entertained. The Municipal

Commissioner/Chairman also reserves the right to reject any or all the tenders without assigning

any reason thereof.

26. The contractors are requested to quote their rates considering above tender conditions.

27. The contractor shall have to execute the contract agreement after received work order.

Even though in special case, If work is not started because of monsoon or any other

special reason (like site is not available and due to unavoidable circumstances arise), after

evaluation of situation the actual date of starting of work will be consider after approval of

Dy.M.C. (Hospital/AMC MET)

28. The Contractor shall not claim for increase or decrease in the quantity of the BOQ item or the

29. The R.A bill / final bill payment shall be made as per the latest A.M.C policy / circular for the

work done by the contractor.

30. Conditional tenders will not be accepted.

Signature of Contractor Addl. City Engineer (AMCMET/HOSPITAL)

Name : Ahmedabad Municipal Corporation

Company’s seal :

Special Note: The issuing branch of all bank guarantees hall of Ahmedabad City

Seal and Signature of the Bidder Addl. City Engineer (AMC MET/HOSPITAL)

Rs. 300/- Stamp

FORMAT FOR BANK GUARANTEE FOR EARNEST MONEY

[1] In consideration of the Terms and Conditions of the tender invited by

Commissioner, Ahmedabad Municipal Corporation, Ahmedabad (hereinafter called"

Ahmedabad Municipal Corporation") and…………………………… (Contractor)

(hereinafter called "Contractor" for the work of ……………………………….

……………. (Name of work) for the …………………… deposit for the due

fulfillment by the contractor of the terms and conditions contained in the said tender,

We Bank of …………………………………….. (hereinafter referred to as the

Bank) at the request of ……………………………. (Name of Contractor) do hereby

undertake to pay the Ahmedabad Municipal Corporation an Amount not exceeding

Rs………….. (Total Earnest Money Deposit Amount) against any loss or damage

caused to or suffered by Ahmedabad Municipal Corporation by reason of any

breach of any term or condition contained in the said tender by the said Contractor.

[2] We Bank of……………………………… do hereby undertake to pay the amount

due and payable under this Guarantee without any demur merely on a demand from

the Ahmedabad Municipal Corporation stating that the amount claimed in due by

way of loss of damage caused to or would be caused to or suffered by the

Ahmedabad Municipal Corporation by the reason of breach by the said contractor

of any of the terms and conditions in the said tender of by reason of the contractors

failure to perform. Any such demand made on the Bank shall be conclusive as

regards the amount due and payable by the Bank under this guarantee shall be

restricted to an amount not exceeding Rs……..….. (Total of Amount of Earnest

Money Deposit).

[3] We undertake to pay the Ahmedabad Municipal Corporation any money so

demanded notwithstanding dispute or disputes raised by the contractor. In any suit

of proceeding pending before any Court or Tribunal relating thereto, our liability

under this presents being absolute and unequivocal. The payment so made by under

this bond shall be a valid discharge of our liability for payment there under and the

contractor shall have no claim against us for making such payment.

[4] We Bank of ……………………, ………………………. further agree that the

guarantee herein contained shall remain in full force and effect during the period

that would be taken for the final award of contract of the said work and that under or

by virtue of said tendered work have been fully finalized and its claim satisfied or

discharged or till Commissioner, Ahmedabad Municipal Corporation, Ahmedabad

clarified that the terms and conditions of the said tender have been fully and

properly finalised by the said contractor and accordingly discharge this guarantee.

Unless a demand or claim under this tender is made on to us in writing on or before

(dt.) …………………… we shall be discharged from all liability under this

Guarantee thereafter.

[5] We Bank of ……………………………………………… further agree with the

Ahmedabad Municipal Corporation that the Ahmedabad Municipal Corporation

shall have the fullest liberty without our consent and without in any manner our

obligations hereunder to vary any of the terms and conditions of the said tender or to

extend the time of performance by the said contractor from time to time or to

postpone for any time any of the power exercisable by the Ahmedabad Municipal

Corporation against the said contractor and to forbear or enforce any of the terms

and conditions relating to the said tender and we shall not be relieved from our

liability by reason of any variation or extension being granted to the said contractor

or for any forbearance, act or omission of the part of the Ahmedabad Municipal

Corporation or any indulgence by the Ahmedabad Municipal Corporation to the

said contractor or by any such matter or thing whatsoever which under the law

relating to sureties would, but for this provision, would relieve us.

[6] This guarantee will not be discharged due to the change in the constitution of the

Bank or the Contractor.

[7] We Bank of ……………………………… lastly under take not to revoke this

guarantee during its currency.

NOT WITH STANDING ANYTHING CONTAINED HERE IN ABOVE:

[1] Our liability under this bank guarantee is restricted to Rs. ………………. (Amount

………………. Deposit)

[2] This bank guarantee is valid up to ………………………..

[3] Our liability to make payment shall arise and we are liable to pay the guarantee

amount or any part there of under this guarantee, only if served upon us a written

claim or demand in terms of the guarantee on or before dt. ……………

[4] In written of bank has executed this present the day and year first written.

Dated …………… Day of ………………..2024.

For …………. (Bank name).

Seal, stamp and signature of

Bank's authorized Signatory

AHMEDABADMUNICIPALCORPORATION

ENGINEERINGDEPARTMENT

PERCENTAGERATETENDERANDCONTRACTFORWORKS

ADDITIONALINSTRUCTIONSTOPERSONSTENDERING

1. CompetencyofTendered:Nocontractwillbeawardedexcept

toresponsiblebiddercapableforperformingtheclassofwork

completed.Beforetheawardofthecontract,anybiddermaybe

requiredtoshowthathehasthenecessaryfacilities,

experience,abilityandfinancialresourcestoperformthework

insatisfactorymannerwithinthetimestipulated.Contractor

mayberequiredtofurnishthedepartmentwiththestatement

astotheirexperienceandtheirfinancialstatus.

2. Bidderwillbedeemedtohaveinspectedthesiteandtohavesatisfiedhimself

astothenatureofallworks,allexistingroadswater-wayandothermeansof

communicationandaccesstoandfromthesiteofworkandthebuildingthatmay be required for

temporary purpose in connection with the construction,

completionandmaintenancefotheworksandmustmakehisownenquiriesasto

workyard,sites,depotanddumpsandastotheacquisitionofsuchadditional sites and areas as

may be necessary for temporary purpose for constructing, completing and

maintaining the works.

3. Payment: - TheBiddermust understand clearly the rates quoted are for

completedworksandincludeallcostdue tolabour,scaffoldingplant,supervision,

servicework,power,royaltiesandoctroietc.andincludeallextrastocoverthe

costofnightworkifanwhenrequired (Excluding GST).Noclaimforadditionalpaymentbeyond

thepricesorratesquotedwillbeentertainedandthetenderwillnotbeentitled

subsequentlytomakemayclaimonthegroundofmisrepresentationoronthe

groundthathewassuppliedwithinformationgivenbyanyperson(whetherthe

memberistheemployeeofEngineeringDepartmentofCorporationornot).Any

failureonhisparttoobtainallnecessaryinformationforthepurposeofmaking histenderand

fillingtheseveralpricesandratesthereinshallnotrelievehim from

anyrisksorliabilitiesarisingouto,orconsequentuponthesubmissionofthe tender. GST will be

paid extra by AMC/Authority at prevailing rate to the Contractor.

4. TenderForms:-theBiddermustfillupeveryblankintheformoftenderandin the schedule and he

must return the documents sent here with.

5. Erasures:-Personstenderingareinformedthatnoerasuresofalternationsby

theminthetextofthedocumentssentherewithwillbeallowedandanysuch

erasuresoralternationswillbedisregarded.Ifthereisanyerrorinwritingno over-writing should

be done, the wrong words orafigureshouldbestruckoutand

thecorrectonewrittenaboveornearitinunambiguousway,eachcorrection should be initialed.

CONTRACTORSTOPLEASEREADTHISCAREFULLY

1. Therateforitemsmustbegiveninwordsandfigures.Amountofeachitemmust

alsobeenteredincolumnsandtheBiddermuststrikeoutgrandtotalofthe amount.

2. Ifthetenderistakeninfavourofthecompany,apowerofattorneyinfavourof

thepersonwhomayhavesignedthetenderforthecompanymustaccompanythe tender.

3. SolvencyCertificateofaBankoraRevenueOfficerofanamountupto20%of

thetenderedcostplustheamountofworksonhandstilltobeexecutedwillhave to be reduced by the

4. Challanforearnestmoneymustaccompanythetender.Biddermaypayearnest

moneyintheformofDemandDraftofalocalBankdrawninfavour

oftheMunicipalCommissionerofMunicipalCorporation,Ahmedabad.Earnest money in cash or

by cheque shall not be accepted.

5. TheContractorshallhavetofurnish IncomeTaxClearanceCertificatebefore

tenderisacceptedandintimateassessmentnumberandwardunderwhichis assessed.

6. Copiesofcertificateasregardspreviousexperienceifanymustaccompanythe tender.

7. DeclarationshowingallworksonhandwiththeContractorandthevalueof works that remain to be

executed in each case must accompany tender.

8. All pages should be initial

9. The Contractor should initial all corrections, erasures and over writing.

10. DiscrepanciesandAdjustmentofErrors:Anyerrorinquantityoramountin schedule'B' showing

items of works to be carried out shall be adjusted in accordance with the following rules :

(a) Intheeventofadiscrepancybetweendescriptioninwordsandfigures

quotedbyaBidderinthe'rates'column,thedescriptioninwordsshall prevail.

(b)Intheeventofanerroroccurringinthe'amount'columnoftheschedule

'B'showingitemsofwork,asaresultofwrongmultiplicationoftheunit- rate and quantity, the units -

rate shall be regarded as firm and multiplication shall be amended on the basis of the rates.

(c) Allerrorsintotalinginamountcolumn and in carry forward totals shall be corrected.

(d) Any rounding off of amounts against 'items' or 'totals' shall be ignored.

11. (i) It any please be noted that tender will be considered as invalid especially, if the

requirements as per instruction. No. 1 to 10 above is not complied with before submitting the

tender. Also please readcarefully the face-sheet and General Rules and Directions for the

guidance of Contractors of this form.

(ii) Rightisreservedtorejectanyoralltender(s)withoutassigningany reason(s) thereof.

(iii) The tender will be liable to be rejected out tight if the Bidder has filed in tender documents by

ball pen instead in ink.

11 A. In addition to the above the tender will also be liable to be rejected outright if :

(i) TheBidderproposesanyalternationintheworksspecifiedorinthetime

allowedforcarryingtheworkoranyconditionorcorrectionmadeinany code or mode of schedule

'B' or specifications.

(ii) Any of the page / pages of the tender is / are removed or replaced.

(iii) The Bidder does not initial all corrections, additions or pasted slips.

(iv) Hemakes any erasure in the tender. And

(v) TheBidderorinthecaseofafirm,eachpartnerorthepersonholding

thepowerofattorneythereofdoesnotsignorthesignaturesis/arenot

attestedbyawitnessthetenderinthespaceprovidedforthe purpose.

12. AcertificateofregistrationasapprovedContractorshouldbeattachedwiththe tender.

12A. In respect of the tenders from the Co-operative Society, a solvency,

certificateofanamountequalto20%oftheamountoftheworkputtotenderwill

havetobeproducedalongwiththetenderoracertificateregardingtheborrowing

capacityofthesocietyissuedbytheLegalAssistant,DirectorateCottageindustries will have to be

produced along with the tender.

13. (1) Theseveraldocumentsformingthecontractaretheessentialpartsofthe

contractarequirementoccurringinoneisasbindingasthoughoccurring

inalltheyareintendedtobemutuallyexplanatoryandcomplementary and to described and provide

for a complete work.

(2) In the event of any discrepancy, the several documents forming the

contractorinanyonedocumentthefollowingorderorprecedenceshould apply:

(a)Dimension and quantities: -

(i)Schedule 'B' of the tender form.

(ii)Specification.

Ondrawing,figured,dimensions,unlessobviously,incorrectwillbefollowedin preference to

scaled dimension.

(b)Description:

(i)Schedule 'B' of the tender form.

(ii)Specifications.

In case of defective description or ambiguity, the Engineer-in-Charge should issue further

instructions directinginwhat mannertheworkistobe

carriedout,itbeingunderstoodthatthebestmodernpracticeistobe followed. The Contractor should

forthwith comply with such instructions.

14. TheContractorshouldtakenoadvantageofanyapparenterrororomissionin drawings or

specifications and theEngineer-in-Charge shallmake such

correctionsandinterpretationsasnecessarytofulfilltheintentoftheplantsand specification.

 Bidder should have registered his class in Ahmedabad Municipal Corporation

within six months after allocation of the work.

CONTRACTOR’SSIGN ADDL.CITYENGINEER

(AMCMET/HOSPITAL)

Name of work:- અ. િુ ન. કોપ ારા સંચા લત ી સી.એચ. નગર

DECLARATION FORM

1. I/WeherebydeclarethatI/Wehavevisitedtheandfullyacquaintedmyself/

ourselveswiththelocalregardingmaterials,labourandotherfactorspertainingto the

work before submitting this tender.

2. I/WeherebydeclarethatI/Wehavecarefullystudiedtheconditionsofcontract,

specificationandothertenderdocumentsofthisworkandagreetoexecutethe same

Signature of the Contractor

GENERALRULESANDDIRECTIONFORTHEGUIDANCEOF CONTRACTORS:

1. Allworksproposedtobeexecutedbycontractshallbenotifiedinaformof

invitationtotenderpastedonaboardhungupintheAddl CityEngineerandsignedby

theAddl CityEngineer.

Thisformwillstatetheworktobecarriedout,aswellasthedateforsubmitting

andopeningtendersandthetimeallowedforcarryingoutthework,alsothe

amountofearnestmoneytobedepositedwiththetenderandtheamountofthe security

deposit to be paid by the successfulBidder and the percentage, if any, to

beductedformbills,itwillalsostatewhetherarefundofquarryfees,royalties,

octroiduesandground-rentwillhegranted,copiesofthespecificationsdesigns and

drawings and estimated rates, scheduled rates and any other documents

requiredinconnectionwithalsobeopenforinspectionbyContractorsatthe office of the

Addl City Engineer during office hours.

Wheretheworksareproposedtobeexecutedaccordingtothespecifications

recommendedbyaContractorandapprovedbyacompetentauthorityonbehalf

oftheMunicipalCorporationsuchspecificationwithdesignsanddrawingsshall form

part of the accepted tender.

2. Intheeventofthetenderbeingsubmittedbyafirm,itmustbesignedonhis behalf by a

person holding a power-of-attorney authorising him to do so.

3. Receiptsforpaymentsmadeonaccount ofanywork,whenexecutedbyfirm,

shallalsobesignedbyallthepartners, exceptwheretheContractorsaredescribed

intheirtenderasafirm,inwhichcasethereceiptshallbesignedinthenameof

thefirmbyoneofthepartnersorbysomeotherpersonhavingauthoritytogive effectual

receipt for the firm.

4. Anypersonwhosubmitsatender,shallfilluptheusualprintedformincluding

the'column'totalaccordingtoestimatedquantities,statingatwhatrateheis

willingtoundertakeeachitemofthework,Tenderswhichpurposeanyalteration

intheworksspecifiedinthesaidformofinvitationtotenderorinthetime

allowedforcarryingouttheworkorwhichcontainanyotherconditionsofany sort, will

liable to rejection.

Nosingletenderincludemorethanonework,butContractorswhowishtotender

fortwoormoreworks,shallsubmitaseparatetenderforeach.Tendersshallhave

thenameandthenumberofthework(towhichtheyrefer)writtenoutsidethe envelope.

5. TheA d d l CityEngineerorhisdulyauthorizedAssistantshallopentendersinthe

presence of any intending Contractors who have submitted tenders or their

representativeswhomaybepresentatthetimeandhewillentertheamountsof

theseveraltendersinacomparativestatementinasuitableform.Intheeventofa tender

being accepted, the Contractor, shall thereupon for the purpose of

identification,signcopiesofthespecificationsandotherdocumentsmentionedin

thistenderintheeventofatenderbeingacceptedthecontractor,shallthereupon for the

purpose of indification, sign copies of the specifications and other

documentsmentionedinthistenderintheeventofatenderbeingrejected,the Municipal

Commissioner shall authorise the officer concerned to refund the

amountoftheearnestmoneydepositedtotheContractormakingthetenderonhis giving a

receipt for the return of the money.

6. Theofficercompetentthedisposeofthetendersshallhavetherightofrejecting all or any

of the tenders.

7. NoreceiptforanypaymentallegedtohavebeenmadebyaContractorinregard

toanymatterrelatingtothistenderorthecontractshallbevalidandbindingon Municipal

Corporation unless it is signed by the Addl City Engineer.

8. Thememorandumofworktobetenderedforanyscheduleofmaterialstothe supplied by

the Municipal Corporation and their rates shall befilled in and

completedbytheofficeoftheAddl CityEngineerbeforethetenderformisissued.Ifa

formissuedtoanintendingtendershasnotbeensofilledinandcompleted,he

shallrequestthesaidofficetohavethisdonebeforehecompletesanddelivershis tender.

9. Allworksshallbemeasurednotbestandardmeasureandaccordingtotherules and

customs of the Municipal Corporation without reference to any local custom.

10. UndernocircumstancesshallanyContractorbeentitledtoclaimenhancedrates for any

item in this contract.

11. Every Contractor shall, unless exempted in writing by theAddl City Engineer

concerned,producealongwiththistender,asolvencycertificateofhisfinancial

stabilityfromthecollectoroftheDistrictwithinwhichheresidesoraBank'shis certificate.

If hefails to produce such a certificate his tender will not be considered.

12. All corrections and additions or pasted slips should be initialed.

13. Allmeasurementofworkwillbetakenaccordingtotheusualmethodinusein the

Municipal Corporation and as per I.S.code for general practice and no

proposalstoadoptalternativemethods willbeaccepted.TheA d d l CityEngineer's

decisionastowhatis'theusualmethodinuseintheMunicipalCorporation'will be final.

14. The Contractor shall have to attach to his tender, Income-Tax Clearance certificate

to be obtained from the Income-Tax Officer.

15. TheContractorwillhavetoconstructashedforastoringcontrolledandvaluable

materialsissuedtohimunderschedule'A'oftheagreementatwork-sitehaving

doublelockingarrangement.Thematerialswillthenbetakenforuseinthe

presenceoftheDepartmentalperson.No.Materialwillbeallowedtoberemoved form the

16. NoforeignexchangewillbereleasedbytheDepartmentforthepurposeofplant and

machinery required for the execution of the work contracted for.

17. Controlled materials (Essentially Certificate)

(i) Asregardscontrolledmaterials,theMunicipalCorporationwillhelpto arrange

for the permit as far as possible and help the Contractor

insecuringthesame.Allincidentalchargesmetwithinprocuringthese

materialsshallbebornebytheContractorhimself.ThoughtheMunicipal

Corporationwillhelptoarrangeforthepermitasfaraspossibleandhelp

theContractorinobtainingmaterials,itshallnotacceptanyresponsibility

foranydelayorlossonaccountofdelaycausedtothecontractorwhile obtaining

(ii) Thecontractorshallsubmitto A d d l CityEngineeroncloseofeverycalendar

month,themonthlyreturnsintheprescribedformsastothereceiptsand actual

use of the controlled materials during the month.

(iii) TheContractorshallpermittheAddl CityEngineerorhisrepresentativesto

inspectthestockofthecontrolled materialsstoredbyhimatanytime whenever

the City Engineer or his representative(s) so desier(s).

18. Thetenderfortheworkshallremainopenforaperiodof(120days)fromthe

dateofopeningofthetendersforthisworkandtheBiddershallnotbeallowed

towithdrawofmodifytheofferonhisownduringthisperiod.IfanyBidder

withdrawsormarksanymodificationsoradditionsinthetermsandconditionsof his

tender, not acceptable to the Municipal Corporation, then Municipal

Corporationshall,withoutprejudicetoanyrightorremedy,beatlibertytoforfeit in full

the said earnest money.

19. The Contractor shall employ only such labour that shall produce a valid

certificate of having been vaccinated against small - pox within a period of last

 Bidder should have registered his class in Ahmedabad Municipal Corporation

within six months after allocation of the work.

TENDER FOR WORKS

I/WeherebytenderfortheexecutionfortheMunicipal * In Figures as well in words.

CorporationofAhmedabad(hereinbeforeandhereinafter

referredtoas'Corporation')oftheworkspecifiedinthe

underwrittenmemorandumwithinthetimespecifiedin

suchmemorandumat*…………………………………...

Percent below / above the estimated rates specified

schedule'B'(memorandumshowingitemofworkstobe

carriedout)andinaccordanceinallrespectswiththe

specifications, designs, drawings and instructions in

writingreferredtointhistenderandinClause13ofthe

annexed conditions of contract and agree that when

materialsfortheworkareprovidedbyCorporation,such

materialsandtheratestobepaidforthemshallbeas provided

in schedule 'A' hereto.

(a)General Description: Name Of Work :-

(a)If several sub works are included

આખની હો પટલ બ ડ ગ ક પસમાં જ ર યાત the should be detailed in a separate

list.The amount of earnest money

જ to be deposited shall be in

ર પેર ગ કામ તથા ફાયરની કામગીર અને accordance with instruction no.

(b) Estimate Cost: Rs.

(c)Earnest Money: 1% of the estimated amount of

tendered work. Rs.83,084.00

(D) SECURITY DEPOSIT

(i) 5% of the contract value cost paid in cash if the contract value is less than Rs. 5000/-

(ii) (a) 1% of the estimated cost paid as earnest money along with the tender.

(b) Security Deposit is equal to 5% of the sectioned tender cost in form DD or Bank

(iii)Bank Guarantee from a Nationalized Bank or Bank approved by the Municipal

Corporation for an amount equal to 5% of sectioned tender cost

Note – 1. All work shall be carried out as per Public Works Department Handbook and

other specifications of Ahmedabad Municipal Corporation or as directed.

Note – 2. Rates quoted include clearance of site (prior of commencement of work and at its

close) in all respects and hold good for work under all condition, site moisture

CONTRACTOR’S SIGN. ADDL.CITY ENGINEER

(AMCMET/HOSPITAL)

GENERALSPECIFICATIONS

The work shall be completed with in 11 months Including Monsoon after the order to start the

work.If the site is not cleared to start the work,the time limit will be considered from the date of

possession given to start the work.

TheContractorshallremainresponsibleforworkmen’scompensation,ifany,whensuch

caseoccurs.TheContractorshallarrangeforredlampsatnightandfencingandpagiand

shallberesponsibleforandshallberesponsibleforanddamageoflifeandlimeor

propertyofanyhappen,duringtheexecutionofwork.Incaseofdisputeforunseenor

overlookeditemsthedecisionofAddl CityEngineershallbefinal.TheContractorshallhave

togivesitecleanofallrubbishoncompletionofthework.Contractoratriskandcost shall remove all the

reject materials from the site within 24 hours.

Thecontractorshallhavetomakehisownarrangementforwaterrequiredforthework.

Ifanyextraitemcropsupduringtheprogressofworkthecontractorshallcarrythesame

outandheshallbepaidattheratefixedbyAddl.C.E. aspertherateanalysisbasedoncurrent market rates.

IfintheinterestoftheCorporationitisnecessarytochangeeitheranysiteorthedesign

oftheproposedworkthecontractorshall carryoutthesameathisquotedwithout

charginganyextrawillhavetocarryouttheworksandhewillbepaidattheratesquoted by him and no

claim for subsequent charges made entertained.

Retentionmoneyattherateof2%shall bedeductedfromeveryrunningbillofthe contractor and which

will be paid at the time offinal bill.

CONTRACTOR’S SIGN. ADDL. CITY ENGINEER(AMCMET/HOSPITAL)

1. Wvhtuf< xuLzhtu su <u Jdobtk hSMx[uNl ^htJ<t ftuLx[tfxh©eytuyu

ztWljtuz fhelu ChJt. ÂJÂNÐ ÂfMmtbtk stu xuLzhbtk œNtoJuj ntug <u bwsc

yLg ftuLx[tfxh / buLgwVu¾ah xuLzh Che NfNu.

2. yt E-xuLzhbtk œNtoJuj «tEÍcez rmJtglt ztu¾âwbuLx zwÃjefux ftuveytu

mt&u Chelu Wvhlt mhltbu ÁcÁ /Mvez vtuMx &e rlg< mbgbtk btufjJtlt

3. Nh<e xuLzhtu hœ ct<j dKtNu.

4. xuuLzhtu ftuEvK fthK ytÃgt rmJtg MJefthJt fu lrnk MJefthJt <ule mkÃËKo

m•tt BGþrlrmvj frbNlh©ele hnuNu.

5. ftuLx[tfxh©eytuyu xuLzh mt&u BGþrlrmvj hSMx[uNlle/dJobuLx

hSMx[uNlle ftuve bwfJtle hnuNu ylu fJh Wvh xuLzh lkch <&t ftuLxufx lkch

MvÐ jFJtu. BGþrlrmvj hSMx[uNlle/dJobuLx hSMx[uNlle ftuve bwfJtbtk

ln´ ytJu <tu xuLzh hœ dKJtbtk ytJNu.

6. xuLzh Ve vu ytuzoh / zebtLz z[tVx&e aqfJJtle hnuNu. ylu <ule vtA¤ ‘ E ’

xuLzhltu xuLzh ytR.ze lkch yawf jFJtltu hnuNu.

7. xuLzh Ve <&t R.yub.ze le hfblt z[tVx <&t vu ytuzoh xuLzh bwsc œhuf

xuLzh btxu yawf yjd yjd ChJtlt hnuNu.

8. ftuLx[tfxhtuyu xuuLzhbt cukflw ltb, Ft<t lkch, btRfh lkch ylu mhltbw MvÐ

9. xuLzh Ve, R.yub.ze. ÂJltlt <&t ytuAe auf hfblt xuLzhtu hœct<j (fuLmj)

10. su ftuLx[tfxh©eytuyu hSMx[uNl heLgw fhuj l ntug <u ftuLx[tfxhu xuLzh

11. xuLzhtu mt&u BþfJtbtk ytJ<e yluoMx ble xuLzhle hfblt 1% «btKu cukf

duhLxe / zebtLz z[tVx / jtufj btRfh auf &e s MJefthJtbtk ytJNu. ylu<ule

vtA¤ ‘ E ’ xuLzhltu xuLzh ytR.ze lkch yawf jFJtltu hnuNu. cukf duhuLxe

ybœtJtœ NtFtle ntuJe sYhe Au.

12. ftuLx[tfxh©eytuyu JucmtEx Wvh xuLzh ltuxembtk œNtoÔgt Bþsc òu ftuE

Mþ^tht J^tht fhJtbtk ytJuj nNu <tu btLg htFJtlt hnuNu su ykdu AuÕjt 72 fjtf

vnujt Juc mtEx Wvh su <u xuLzh auf fhe ChJtLþk hnuNu.

Esluh Ft<t îtht «ftrN<

CONTRACTOR'S SIGNATURE ADDL.CITY ENGINEER

& STAMP (AMC MET/ Hospital)

ybœtJtœ BgwÂlÂmvj ftuvtuohuNl

yu.yub.me.bux/nturMvxj ytuVem,

1. Wvhtuf< xuLzhtu su <u Jdobtk btLg hSMx[uNl ^htJ<t ftuLx[tfxh©eytuyuu ChJt.

2. xuLzhle rlg< xuLzh Ve <&t R.yub.ze. ck^ fJhbtkk Wvh lt mhltbu ÁcÁ / hSMxh

yu.ze./ MvezvtuMx/ fwhegh&e rlg< mbgbtk btufjJtlt hnuNu.

3. ftuLx[tfxh©eytuyu xuLzhle mt&u BGþrlrmvj btLg hSMx[uNlle/ dJobuLx

hSMx[uNlle ftuve, (xuLzh ftuve <&t yLg vwhtJt mt&u) yawf mtbuj fhJtle hnuNu

ylu fJh Wvh xuLzh lkch <&t ftuLxufx lkch sYh MvÐ œNtoJJtltu hnuNu.ck^ fhJh

Wvh xuLzh ltuxem lkch, xuLzh lkch, ftblwkk ltb <&t, ftuLx[[tfxhle mkM&tlwk ltb

<&t ftuLxufx lkch yJ~g œNtoJJtlt hnuNu. ftuLx[tfxhtuyu xuuLzhbt cukfl wltb, Ft<t

lkch, btRfh lkch ylu mhltb wMvÐ yûthtubtk jFJw.

4. xuLzh Ve vu ytuzoh / zebtLz z[tVx&e aqfJJtlehnuNu. œhuf xuLzh œeX yjd xuLzh

xuLzhVe ChJtle hnuNu.

5. ytuAe hfble xuLzh Ve, R.yub.ze. fu xuLzh Ve, R.yub.ze. ÂJltlt xuLzhtu hœct<j

6. xuLzh mt&u BþfJtbtk ytJ<e yluoMxble, xuLzhle hfblt 1% «btKu cukf duhLxe /

zebtLz z[tVx / vu ytuzoh / jtufj btRfh auf&e s MJefthJtbtk ytJNu. œhuf xuLzh œeX

yjd R.yub.ze. ChJtle hnuNu. R.yub.ze. hfb Yt. yuf fhtuz mwDele ykœtS< hfblt ftb

btxu jtufj btRfh auf, rzbtLz z[tVx, vu ytuzoh fu cukf duhkxelt MJYvbtk <&t Yt. yuf

fhtuz&e Wvhle ykœtS< hfblt ftb btxu R.yub.ze.le hfb btºt rzbtLz z[tVx, vu ytuzoh

fu ckuf duhkxelt MJYvbtk ytvJtle hnuNu.

7. cukf duhuLxe btºt ybœtJtœ Nnuhle s MJefthJtbtk ytJNu.

8. xuLzh Ve <&t R.yub.ze.le hfblt ze.ze./ aufle vtA¤ ftuLx[tfxh©eyu vtu<tle

mkM&tlwk ltb <&t btuctRj lkch yJ~g jFJtltu hnuNu. ftuLx[t¾xhu vtu<tle mkkM&tlt

auf <&t ze.ze. xuLzh R~gw &gt <theF ctœlt s ytvJt.

9. Nh<e xuLzhtu hœ ct<j dKtNu.

10. stu xuLzhbtk MvÐ WÕjuF fhtguj ntug <tu atubtmtlu fthKu Ft<tfeg MËalt yLJgu

ßgthu ßgthu ftb ck^ htFJtLþk &tg <u mbglu ftble BþÆ<btk bshu ytvJtbtk ytJNu.

vhkðþ yt yLJgu ftuE CtJ J^thtu ytvJtbtk ytJNu lne. sule ltuk^ œhuf xuLzhh ujuJe.

11. xuuLzhtu ftuEvK fthK ytÃgt rmJtg MJefthJt fu lrnk MJefthJt <ule mkÃËKo m•tt

BGþrlrmvj frbNlh©ele hnuNu.

12. xuLzhbtk stu ftuR mwDtht JDtht ntug <tu <u ykd xuLzh Ch<t vnujt AuÕju ÂœJmu

rlg< JucmtRx y&Jt fauheyu sYhe <vtm fhelu s xuLzh btufjJw.

13. mefgtuhexe zevtuÍex/ vVtuboLm duhuLxele hfb Yt. yuf fhtuz mwDele ykœtS<

hfblt ftb btxu jtufj btRfh auf, rzbtLz z[tVx, vu ytuzoh fu cukf duhkxelt MJYvbtk <&t

Yt. yuf fhtuz&e Wvhle ykœtS< hfblt ftb btxu mefgtuhexe zevtuÍex/ vhVtuboLm

duhkxele hfb btºt rzbtLz z[tVx, vu ytuzoh fu ckufduhkxelt MJYvbtk ytvJtle hnuNu.

14. ytuljtRl yul-«tufgwh JucmtRx vh&e ChJtlt &<t xuLzhbtk ftuLx[tfxh/ yusLmeyu

xuLzhle ntzo ftuvebtk CtJ Cgto Jdhle mne mefft fhe mcbex fhJtle hnuNu.

stu<ubtk CtJ Chuj nNu <tu <uJt xuLzh hœ fhJtbtk ytJNu.

15. mœh xuLzhbtk ” GST rl<e rlgb bwsc jtdw vzNu ” <u bwsc dK<he fhe xuLzhtu

16. mœh xuLzhbtk ” dwsht< mhfth ©e lt ©b,ftiNÕg rJftm ylu htusdth

rJCtd,mraJtjg,dtk^eldh lt XhtJ ¢btkf: LED/WRT/e-

file/11/2024/0293/M2Dt.15.02.2024” bwsc awM<vKu ybj fhJtltu hnuNu.

CONTRACTOR'S SIGNATURE ADDL.CITY ENGINEER

& STAMP (AMC MET/ Hospital)

ybœtJtœ BgwÂlÂmvj ftuvtuohuNl

yu.yub.me.bux/nturMvxj ytuVem,

yu.yth.me. xuLzh- Nh<tu

1. yu.yth.me. xuLzhbtk Jfoytuzh ytÃgt ctœ ftb NY fhJtle mbgbgtoœtbtk

ftuLx[tfxh îtht ftb NY fhJtle òK fgto ctœ 24 fjtflt ftb NY lrn fhJtbtk ytJu <tu

yLg ftuLx[tfxh vtmu btfuox hux&e ftuLx[tfxhlt Faou ylu stuFbu ftbdehe

fhtJJtbtk ytJNu.

2. ftuLx[tfxhlu Jfoytuzoh ytÃgt ctœ yu.yth.me. «fthlkw xuLzh ntuR ftble

sYhegt< bwsc xujeVtulef òK fhe su <u ftb NY fhJt fnuJtbtk ytJNu ylu su ftble

òK fgtolt 24 fjtfbtk NY fhJtbtk lrn ytJu ylu rlg< mbgbgtoœtbtk vwKo fhJtbtk

lrn ytJu <tu su <u ytRxblt SOR CtJ&e 1.5 dKe vulÕxe Jmwj juJtbtk ytJNu.

3. ºtK fu J^w Jth Wvh bwscle yLg ftuLx[tfxh vtmu&e ftbdehe fhtJJtle Vhs vzNu

ylu/y&Jt ºtK fu J^w Jth vulÕxe fhJtle Vhs vzNu <tu <u mkstudtubtk

ftuLx[tfxhlu çjufjeMx fhJtbtk ytJNu sule ykr<b m•tt Bgw.frb¹lh©elu hnuNu.

CONTRACTOR'S SIGNATURE ADDL.CITY ENGINEER

& STAMP (AMC MET/ Hospital)

AHMEDABAD MUNICLPAL CORPORATION

MAHANAGAR SEVA SADAN

AMC MET/HOSPITAL

Clause : 1 Contractor shall not employ any child having age 5 to 15 years as it is prohibited by Child Labour

Prohibition and Regulation Act 1986. Hon'ble Supreme Court has given certain guide lines and as per the guide

lines. If child labour is employed on the site work, the contractor shall have to deposit Rs. 20,000.00 (Rupees

Tw enty thousand only) in the child labour welfare fund. If the employer refuses to deposit then action will be

taken for contempt of Supreme Court Judgement and also will be prosecuted by concerned authority. Because

of the breach of any provision of child labour prohibition and regulation Act 1986 by the Contractor &

Municipal Corporation becomes liable to pay any amount then the Municipal Corporation shall recover the said

amount from the contractor.

Clause : 2 The Standing Committee has decided to deduct 1/2% amount from each running bill as per its Reso.

No. 1783 Date 06--02-97, but the Municipal Corporation Board has recently decided that the actual testing

charge is taken and the remaining amount is refundable at the time of final bill (As per Muni. Board Reso. No.

Clause : 3 Contractor has to follow prevailing Labour act and has to maintain labour register acordingly,and

has to follow other govt.rules.

Clause : 4 Quantity taken in tender are tentative and may differ as per execution of work. No claim shall be

entertain regarding QUANTITIES.

* MODIFICATION OF DOCUMENTS

Modification of specifications and correction/corrigendum in respect of the work if required will be made by

A.M.C. The same shall be placed on A.M.C website which may be downloaded by the tendrers enclosed along

with the tender duly signed. These shall form a part of tender. The tenderer shall not add or amend the text of

any of the documents except in so far as may be necessary to comply with any addendum.

* ADDENDAUM/CORRIGENDUM .

Addendum or corrigendum conveying any change or correction in respect of the work shall form the part of the

contract documents. The full consideration shall be given to such addendum or corrigendum or correction

before submission tender duly filled in by the contractor. Therefore, the contractor shall have to watch such

addendum or corrigendum or correction published by A.M.C through its website www.egovamc.com. Tenderes

shall verify the number of addendum issued and enclose the same with the tender documents,failing which the

tender shall be liable for rejection and no any complaint in respect to this shall be entertained under any

CONTRACTOR'S SIGNATURE ADDL.CITY ENGINEER

& STAMP ( AMC MET/ Hospital)

AHMEDABAD MUNICIPAL CORPORATION

ENGINEERING DEPARTMENT

TECHNICAL SPECIFICATIONS

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

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

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

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

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

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

D.1.2 APPLICABLE CODES

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

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

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

2. IS 1200 - Method of measurement of building

3. IS 3764 - Safety code for excavation

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

Engineering works

5. IS 2720 - Methods of test for soils

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

Part – II - Determination of water content.

Part – IV - Grain size analysis.

Part – V - Determination of liquid and plastic limit.

Part – VII - Determination of water content dry density relation

using light compensation.

Part – IX - Determination of dry density – moisture content

relation by constant weight of soil method.

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

cohesionless soils.

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

sand replacement method.

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

water replacement method.

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

Part - XXXVIII - Compaction control test (Hilf Method)

D.1.3 DEFINITIONS

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

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

soiling areas to be grassed or cultivated.

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

approved drawings or otherwise as being the general levels after completion

D.1.3.2 Drawings

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

required to show areas to be excavated / filled grade level, sequence of priorities

etc. The contractor shall follow strictly such drawings.

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

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

necessary, whether or not such items are specifically stated here for completion of

the job in accordance with specification requirements.

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

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

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

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

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

nearer as determined by Engineer based on ground profile. These shall be

checked by Engineer and thereafter proper recorded.

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

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

erecting and maintaining or substantial barricades around excavated areas and

warning lamps at night for ensuring safety.

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

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

specified and levelling the same so as to provide natural drainage. Rock / soil

excavated shall be stacked properly as directed by Engineer. As a rule, all softer

material shall be laid along the center of heaps, the harder and more weather

resisting materials forming the casing on the sides and the top. Rock shall be

stacked separately.

D.1.4.5 Carting and recarting of the excavated material

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

the excavated stuff within a lead of 100 m and recarting the same to the site for

backfilling the trenches with the selected excavated materials as directed by

Engineer in charge.

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

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

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

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

Engineer. Where earthfill is intended, the area shall be stripped of all loose/soft

patches, top soil containing objectionable matter / materials before fill

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

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

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

treasures, relics, antiquities and other similar things which may be found in or

upon the site shall be the property of Client and Contractor shall duly preserve the

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

person or persons as Owner may from time to time authorize or appoint to receive

D.1.7 CLASSIFICATION

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

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

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

wet. The decision of Engineer regarding the classification of the material shall be

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

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

D.1.7.2.1 Ordinary and Hard Soils

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

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

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

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

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

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

D.1.7.2.2 Soft and Decomposed Rock

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

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

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

pneumatic breaking equipment. The mere fact that Contractor resorts to blasting

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

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

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

not more than 500 mm in any one of the other two directions. Masonry to be

dismantled will also be measured under this item.

D.1.7.2.3 Hard Rock

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

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

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

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

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

rock. Concrete work both reinforced and unreinforced to be dismantled will be

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

D.1.8 EXCAVATION

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

opinion of Engineer, the work involved and time schedule permit manual work.

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

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

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

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

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

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

be carried out just prior to laying the mud-mat.

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

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

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

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

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

claimed by Contractor on this account.

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

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

in each individual case, for the method he proposes to adopt for the excavation,

including dimensions, side slopes, dewatering, disposal etc. This approval,

however, shall not in any way relieve Contractor of his responsibility for any

consequent loss or damage. The excavation must be carried out in the most

expeditious and efficient manner. Side slopes shall be as steep as will stand

safely for the actual soil conditions encountered. Every precaution shall be taken

to prevent slips. Should slips occur, the slipped material shall be removed and the

slope dressed to a modified stable slope. Removal of the slipped earth will not be

paid for if the slips are due to the negligence of Contractor.

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

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

of hard rock; however not without the specific permission of Engineer.

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

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

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

D.1.9 STRIPPING LOOSE ROCK

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

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

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

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

away from the area of the excavation. The method used shall be such as not to

shatter, or render unstable or unsafe the portion which was originally sound and

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

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

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

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

D.1.10 FILL, BACK FILLING AND SITE GRADING

D.1.10.1 General

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

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

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

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

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

been properly intercepted or otherwise dealt with as directed by Engineer.

D.1.10.2 Material

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

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

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

excavated material is mostly rock, the bounders shall be broken into pieces not

larger than 150 mm size, mixed with properly graded fine material consisting of

murrum or earth fill up the voids and the mixture used for filling.

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

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

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

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

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

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

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

such access road does not exist, at his cost.

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

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

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

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

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

shall be consolidated to the satisfaction of Engineer. Earth shall be rammed with

approved mechanical compaction machines if instructed. Usually no manual

compaction shall be allowed unless Engineer is satisfied that in some cases manual

compaction by tampers cannot be avoided. The final backfill surface shall be

trimmed and levelled to proper profile as directed by Engineer or indicated on the

D.1.10.5 Plinth filling

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

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

compaction machines. If required engineer may however permit manual

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

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

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

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

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

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

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

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

only if permitted by Engineer. As rolling proceeds water sprinkling shall be done

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

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

maximum of 200 mm. Engineer will determine the thickness of the layers in

which fill has to be consolidated depending on the fill material and equipment

used. Rolling shall commence from the outer edge and progress towards the

centre and continue until compaction is to the satisfaction of Engineer, but in no

case less than 10 passes of the roller will be accepted for each layer. The

compacted surface shall be properly shaped, trimmed and consolidated to an even

and uniform gradient. All soft spots shall be excavated and filled and

consolidated. At some locations / areas if may not be possible to use rollers

because of space restrictions etc. Contractor shall then be permitted to use

pneumatic tampers, rammers etc. and he shall ensure proper compaction.

D.1.10.6 Sand filling in plinth and other places

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

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

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

consolidation. Any temporary work required to contain sand under flooded

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

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

structures on sand fill shall not be started until Engineer has inspected and

approved the fill.

D.1.10.7 Filling in Trenches

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

of pipes and drains have been tested and passed. The backfilling material shall be

properly consolidated by watering and ramming, taking due care that no damage

is caused to the pipes.

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

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

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

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

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

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

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

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

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

the pipe shall be done by hand compaction or approved means in layers not

exceeding 20 cm. The filling from a level 30 cm. Above the top of the trench

shall be done by hand or other approved mechanical methods with broken rock

filling of size not exceeding 20 cm mixed with fine material as available to fill up

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

avoid unequal pressure on the pipe.

D.1.11 GENERAL SITE GRADING

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

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

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

unless otherwise indicated below.

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

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

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

Clause 10.0 before the next layer is deposited.

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

shall be carried out by Contractor at his cost.

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

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

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

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

material and make good the slip at his cost.

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

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

incomplete if the desired compaction has not been obtained.

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

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

such a method is permitted, it will be for contractor of demonstrate that the

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

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

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

compact the area uniformly throughout.

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

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

layers not exceeding 50 cms approximately. After rock filling the void in the

rocks shall be filled with finer materials such as earth, broken stone etc. and the

area flooded so that the finer materials fill up the voids. Care shall be taken to

ensure that the finer fill material does not get washed out. Over the layer so filled,

a 100 mm thick mixed layer of broken materials and earth shall be laid and

consolidation carried out by a 12 tonne roller. No less than twelve passes of the

roller shall be accepted before subsequent similar operations are taken up.

D.1.12 FILL DENSITY

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

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

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

content. Contractor shall demonstrate adequately at his cost, by field and

laboratory tests that the specified density has been obtained.

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

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

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

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

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

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

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

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

D.1.14 MEASUREMENT AND PAYMENT

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

shall be based on the foundation plan of the structure considering working area of

1m beyond edge of raft / footing..

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

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

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

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

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

structures, walls, tanks, rafts, trenches etc. with excavated material will not be

paid for separately. It shall be clearly understood that the rate quoted for

excavation including backfilling shall include stacking of excavated material as

directed, excavation / packing of selected stacked material, conveying it to the

place of final backfill, compensation etc. as specified. As a rule material to be

backfilled shall stacked temporarily within the basic lead of 100 meters unless

otherwise directed by the Engineer. If Engineer directs / permits a lead of over

100 meters for such material, the conveyance of the material for the extra distance

over the basic lead of 100 meters for backfilling will be paid for.

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

material will be made for only compaction as specified / directed. Cost of all

other operations shall be deemed to have been covered in the rate quoted for

excavation. Payment for this work will be made based on measurement of trench

dimensions filled. The plinth ground levels shall be surveyed before hand for this

purpose. If no compaction is specified / desired such filling will not be separately

paid for. In such an event, the fill shall be levelled / finished to the profile as

directed at no extra cost.

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

shall include all operations such as clearing, excavation, lead and transport, fill,

compaction etc. as specified. Actual quantity of consolidated filling or actual

quantity or excavation in the borrow pits (less such top soil which has been

excavated and not used for filling) whichever is less shall be measured and paid

for in cubic meters. The lead, lift etc. shall be as indicated in the schedule of

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

D-4 : RAIN WATER DRAINAGE

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

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

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

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

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

such water shall be approved by the Engineer.

D-5 : SITE FILLING

D.5.1.1 Apart from any other work / purpose for which this specification may be made

applicable by Engineer, this shall generally govern work involving filing site /

plant over the entire area / most of the area to raise the general grade level to the

desired elevation. This work shall be carried out as per applicable clauses

“Earthwork in Grading, Excavation and Backfilling” particularly clauses 10 &

D.5.2 FILL MATERIAL

D.5.2.1 General

D.5.2.1.1 All fill material whether such material is brought from outside borrow areas

or excavation within the site, will be subject to Engineer’s approval.

Notwithstanding any approval given to the fill material or borrow areas from

which fill material is proposed to be brought, Engineer / Owner reserves the

right to reject such material which in his opinion either does not meet the

specification requirements or is unsuitable for the purpose for which it is

D.5.2.2 Borrow Areas

D.5.2.2.1 It shall be Contractor’s responsibility to locate suitable borrow areas for

borrowing fill material. Such areas will be inspected by Engineer and approved

before Contractor makes arrangements to borrow the fill material. The top soil

which may contain vegetation, rubbish, slush etc. shall not be used. If demanded

by Engineer. Contractor shall arrange to have trial pits of specified dimensions

and numbers dug at locations specified, for Engineer to examine the nature and

type of material likely to be obtained from the borrow area.

D.5.2.3 Lead, Lift and Transportation

D.5.2.3.1 Unless separately provided, for, all lead, lift and transportation required for

bringing in the fill material from borrow areas or from excavation from within the

site shall be included in the Contractor’s quote unit rates.

D.5.2.4 Quality

D.5.2.4.1 The borrowed soil shall be generally granular, and non-cohesive. It shall consist

of sand, silty sand, murrum, ordinary soil, gravel and shingle. Dredged material,

free from clayey deposit, will be accepted. Fill material shall also be free from

sulphates, salts, organise, foreign and other harmful or objectionable materials.

Any material rejected by Engineer shall be removed from the site immediately.

D.5.3 ACCESS ROAD

D.5.3.1 Roads, whether of temporary or other nature, required to be constructed for

access and for movement of man, materials. Equipments, transport vehicles,

vehicles carrying fill material etc. to or over borrow areas and/or to or over areas

on which fill has to be deposited shall be constructed by Contractor at his cost.

Such costs shall be deemed to have been included in the unit rates quoted by

Contractor. Such access roads shall be maintained in good condition during all

seasons to ensure completion of work according to time schedule.

D.5.4.1 Site clearing before filling shall be carried out as specified in the enclosed

specification. Earthwork in Grading, Excavation and backfilling.

D.5.5.1 Backfill

D.5.5.1.1 Backfill shall be deposited to bring the grade level to desired elevation after

compaction of fill.

D.5.5.1.2 Back fill shall be compacted, where so specified, by 12 tonne rollers as indicated

in Clause D.5.5.2.3 below. The fill material shall be compacted to the specified

density, where so specified.

D.5.5.1.3 If the density of fill use of rollers for compaction is not specified. Contractor

shall ensure necessary compaction by the passage of trucks, carrying the fill

material over the deposited fill in such a way that the entire fill area is covered.

These will reasonably compact the sand fill will be accepted by Engineer.

However, Contractor shall ensure that every layer is thus compacted before the

succeeding layers are deposited. Each layer shall not exceed 200 mm in

D.5.5.1.4 Compaction of back fill by flooring the area shall be carried out where so

specified. In this case, Contractor should ensure that the fill material is not

washed away. This work shall be carried out as directed by Engineer.

D.5.5.2 Soil Fill

D.5.5.2.1 Approval soil fill consisting of ordinary soil, murrum, soil containing gravel,

shingle etc. shall be deposited in layers not exceeding 200 mm. Contractor

should ensure that all clods of earth are broken down to a size not larger

D.5.5.2.2 Where density of fill or use of rollers is not specified, the fill shall be carried out

as specified in Clause D.5.5.1.3 above.

D.5.5.2.3 Where the fill material has to be compacted by use of rollers procedure as

specified in Clause D.1.10.5.2 of specification for “Earthwork in Grading,

Excavation and Backfilling”.

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

D.5.6 MEASUREMENT

D.5.6.1 The rate quoted by the contractor for filling available excavated earth (excluding

rock if any) will be considered for payment for site filling as per the quantity

executed and measured in cubic meter.

D-6 : CONCRETE WORKS

D.6.1.1 This Specification covers the general requirements for concrete using on-site

production facilities including requirements in regard to the quality, handling,

storage of ingredients, proportioning, batching, mixing, transporting, placing,

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

requirements in regard to the quality, storage, bending and fixing of

reinforcement; grouting as well as mode of measurement and payment for

complete works.

D.6.1.2 It shall be very clearly understood that the specifications given herein are brief

and do not cover minute details. However, all work shall have to be carried out in

accordance with the relevant standards and codes of practices or in their absence

in accordance with the best accepted current engineering practices or as directed

by Engineer from time to time. The decision of Engineer as regards the

specification to be adopted and their interpretation and the mode of execution of

work shall be final and binding on Contractor and no claim whatsoever will be

entertained on this account.

D.6.2 APPLICABLE CODES AND SPECIFICATIONS

D.6.2.1 The following specifications, standards and codes, including all official

amendments / revisions and other specifications and codes referred to therein,

should be considered a part of this specification. In all cases the latest issue /

edition / revision shall apply. In case of discrepancy between this specification

and those referred to herein below or other specifications forming a part of this

bid document, this specification shall govern.

D.6.2.2 Code for Materials

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

2. IS : 455 - Specification for portland slag cement

3. IS : 1489 - Specification for portland pozzolana cement

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

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

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

natural sources for concrete.

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

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

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

and wires for concrete reinforcement.

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

concrete reinforcement.

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

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

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

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

D.6.2.3 Code for Material Testing

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

(Parts 1 to 15)

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

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

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

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

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

chemical) water used in industry.

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

chlorides in concrete admixtures.

D.6.2.4 Code for Materials Storage

1. IS : 4082 - Recommendations on stacking and storing of

construction materials at site.

D.6.2.5 Code for Concrete Mix Design

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

2. SP : 23 - Handbook on Concrete Mixes.

D.6.2.6 Code for Concrete Testing

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

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

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

compressive strength of accelerated cured concrete

test specimens.

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

concrete by penetration resistance.

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

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

D.6.2.7 Code for Equipment

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

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

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

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

5. IS : 7242 - Specification for concrete spreaders.

6. IS : 2505 - General Requirements for concrete

vibrators : Immersion type.

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

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

9. IS : 3366 - Specification for pan vibrators.

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

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

12. IS : 7251 - Specification for concrete finishers.

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

concrete (single and double bucket type).

14. IS : 2750 - Specification for steel scaffoldings.

D.6.2.8 Codes of Practice

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

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

reinforced concrete for dams and other massive

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

(Parts 1 to 4) liquids.

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

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

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

structures and folded plates.

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

concrete reinforcement.

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

reinforced concrete works.

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

deformed bars used for reinforced concrete

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

reinforced concrete construction.

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

consolidating concrete.

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

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

construction of building.

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

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

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

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

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

D.6.2.9 Code for Construction safety

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

(Parts I and III)

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

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

D.6.2.10 Code for Measurement

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

(Part 1 to 28) works.

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

Engineering works.

D.6.3.1 Engineer shall have the right at all times to inspect all operations including the

sources of materials, procurement, layout and storage of materials, the concrete

batching and mixing equipment, and the quality control system. Such an

inspection shall be arranged and Engineer’s approval obtained, prior to starting of

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

responsibilities. All materials which doe not conform to this specification shall be

D.6.3.2 Materials should be selected so that they can satisfy the design requirements of

strength, serviceability, safety, durability and finish with due regards to the

functional requirements and the environmental conditions to which the structure

will be subjected. Materials complying with codes / standards shall generally be

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

establishing their performance suitability based on previous data, experience or

D.6.4 MATERIALS

D.6.4.1.1 Unless otherwise specified or called for by the Engineer, cement shall be

Ordinary Portland cement conforming to IS (latest edition) as per Schedule-B for

construction box etc. D.6.4.1.2 Where Portland pozzolana or slag cement are

used, it shall be ensured that consistency of quality is maintained, there will be no

adverse interactions between the materials and the finish specified is not marred.

D.6.4.1.3 Only one type of cement shall be used in any one mix. The source of supply, type

or brand of cement within the same structure or portion thereof shall not be

changed without approval from Engineer.

D.6.4.1.4 Cement which is not used within 90 days from its date of manufacture shall be

tested at a laboratory approved by Engineer and until the results of such tests are

found satisfactory, it shall not be used in any work.

D.6.4.2 Aggregates (General)

D.6.4.2.1 General

D.6.4.2.1.1“Aggregate” in general designates both find and coarse inert materials used in the

manufacture of concrete (vide BIS 456 & BIS 383) and conforming to tests as per

BIS 2386 (Part I to VI).

D.6.4.2.1.2“Coarse Aggregate” is aggregate most of which is retained when passed through

on 4.75 mm BIS sieve.

D.6.4.2.1.3All fine and coarse aggregates proposed for use in the works shall be subject to

the Engineer-in-Charge’s approval and after specific materials have been

accepted, the source of supply of such materials shall not be changed without

prior approval of the Engineer-in-charge.

D.6.4.2.1.4Aggregates shall consist of natural sand, stone (crushed or uncrushed) and gravel

from a source known to produce satisfactory aggregate for concrete and shall be

chemically inert, non-flaky, strong, hard, durable against weathering, or limited

porosity and free from deleterious materials that may cause corrosion of the

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

grading of aggregates shall be such as to produce a dense concrete of specified

strength and consistency that will work readily into position without segregation

and shall be based on the “mix design” and preliminary tests on concrete specified

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

D.6.4.2.2 Sampling and testing

D.6.4.2.2.1 Samples of the aggregates for mixed design and determination of suitability shall

be taken under the supervision of the Engineer-in-charge and delivered to the

laboratory, well in advance of the scheduled placing of concrete. Records of tests,

which have been made on proposed aggregates and on concrete made from this

source of aggregates shall be furnished to Engineer-in-charge in advance of the

work, for use in determining aggregate suitability. The costs of all such tests,

sampling etc. shall be borne by the contractor.

D.6.4.2.3 Storage of aggregates

D.6.4.2.3.1All coarse and fine aggregates shall be stacked separately in stock piles in the

material yard near the work site in bins properly constructed to avoid inter mixing

of different aggregates. Contamination with foreign material and earth during

storage and while heaping the materials shall be avoided. The aggregates must be

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

of loading into mixer. Rakers shall be piled in layers not exceeding 1.20 m in

height to prevent coning or segregation. Each layer shall cover the entire area of

stock pile before succeeding layers are started. Aggregates that have become

segregated shall be rejected.

D.6.4.2.4 Specific Gravity

D.6.4.2.4.1 Aggregates having a specific gravity below 2.4 (saturated surface dry basis) shall

D.6.4.3 Fine Aggregate

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

conforming to tests as per IS 2386 part I to IV. The sand shall be clean, sharp,

hard, strong and durable and shall be free from dust, vegetable substances,

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

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

D.6.4.3.2 Screening and Washing : Sand shall be prepared for use by such screening or

washing, or both, as necessary, to remove all objectionable foreign matter while

separating the sand grains to the required size fraction.

D.6.4.3.3 Foreign Material limitations : The percentage deleterious substances in sand

delivered to the mixer shall not exceeding the following :

Sr. Foreign Material Percentage by weight

No. Uncrushed Crushed

1 Material finer than 75 micron IS sieve 3.0

3 Coal and Lignite 1.0

4 Clay Lumps 1.0

D.6.4.3.4 Gradation : Unless otherwise directed or approved by the Engineer-in-charge, the

grading of sand shall be within the limits indicated hereunder.

IS : Sieve Grading Grading Grading Grading

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

D.6.4.3.4.1 Where the grading falls outside the limits of any particular grading zone of sieves,

other than 600 microns IS sieve, by total amount not exceeding 5%, it shall be

other than 600 microns IS sieve, by total amount not exceeding 5%, it shall be

regarded as falling within that grading zone. This tolerance shall not be applied to

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

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

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

and preliminary tests shall show its suitability for producing concrete of specified

strength and workability.

D.6.4.3.5 Fineness Modulus

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

fineness modulus is determined by adding the cumulative percentages retained on

the following IS sieve sizes (4.75 mm, 2.35 mm, 1.18 mm, 600 microns and

microns) and dividing the sum by

D.6.4.4 Coarse Aggregate

D.6.4.4.1 Coarse aggregate for concrete, except as noted above, shall conform to IS 383 and

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

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

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

D.6.4.4.2 Screening and Washing : Crushed rock shall be screened and or washed for the

removal of dirt or dust coating, if so requested by the Engineer-in-charge.

D.6.4.4.3 Grading

D.6.4.4.3.1Coarse aggregate shall be either in single size or graded, in both cases the grading

shall be within the following limits :

IS Percentage passing for single sized Percentage passing for graded

Sieve aggregate of normal size aggregate of normal size

D.6.4.4.3.2 The pieces shall be angular in shape and shall have granular or crystalline

surfaces. Friable, flaky and laminated pieces, mica and shale, if present, shall be

only within tolerance limits which will not affect adversely the strength and or

durability or concrete. The maximum size of coarse aggregate shall be 40 mm for

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

Engineer-in-charge or specified otherwise. The maximum size of coarse

aggregate shall be the maximum size specified above but in no case greater than

¼th of the minimum thickness of the member, provided that the concrete can be

placed without difficulty so as to surround all reinforcement thoroughly and fill

the corners of the form. For plain concrete the maximum size of aggregate shall

be of 40 mm. for heavily reinforced concrete members, the nominal maximum

size of the aggregate shall be 5 mm less than the minimum clear distance between

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

whichever is smaller.

D.6.4.4.4 Foreign material limitations

D.6.4.4.4.1 The percentage of deleterious materials in the aggregate delivered to the mixer

shall not exceed the following :

Sr. Foreign Material Percentage by weight

No. Uncrushed Crushed

1 Material finer than 75 micron 3.0

2 Coal and lignite 1.0

3 Clay lumps 1.0

4 Soft fragments 3.0 --

D.6.4.5.1 Water used for both mixing and curing shall conform to IS : 456. Potable water is

generally satisfactory. Water containing any excess of acid, alkali, sugar or salt

shall not be used.

D.6.4.6 Reinforcement

D.6.4.6.1 Reinforcement bars shall conform to IS : 432, IS : 226 or IS : 1786 and the

welded wire fabric to IS : 1566 as shown or specified on the drawings. Only

T.M.T. bars as for specification will be followed.

D.6.4.6.2 All reinforcement shall be clean, free from pitting, oil, grease, paint, loose mill

scales, rust, dirty dust or any other substance that will destroy or reduce bond.

D.6.4.6.3 If permitted by Engineer, welding of reinforcement shall be done in accordance

with IS ; 2751 or IS : 9417 as applicable.

D.6.4.7 Admixtures

D.6.4.7.1 Plasticizer, water-reducing add mixture and concrete water proofer shall conform

to IS : 9103 and integral water proofing admixtures to IS : 2645. Dosage of

plasticizer used in concrete work shall be 300 ml / 50 kg of cement. Manufacturer

must comply ISO-9002 specifications.

D.6.4.7.2 Admixtures may be used in concrete as per manufacturer’s instructions only with

the approval of Engineer based upon evidence that with the passage of time

neither the compressive strength nor its durability is reduced. An admixture’s

suitably and effectiveness shall be verified by trial mixes with the other material

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

same concrete mix, their interaction shall be checked and trial mixes done to

ensure their compatibility. There should also be no increase in risk of corrosion

of the reinforcement or other embedments.

D.6.4.7.3 Calcium chloride shall not be used for accelerating set of the cement for any

concrete containing reinforcement or embedded steel parts. When calcium

chloride is permitted such as in mass concrete works, it shall be dissolved in water

and added to the mixing water by an amount not exceeding 1.5 percent of the

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

be corrected accordingly.

D.6.4.8 Wastage

D.6.4.8.1 No wastage allowance for cement and steel shall be considered and paid for.

D.6.5 SAMPLES AND TESTS

D.6.5.1 All materials used for the works shall be tested before use.

D.6.5.2 Manufacturer’s test certificate shall be furnished, for each batch of cement / steel

and when directed by Engineer samples shall also be got tested by the Contractor

in a laboratory approved by Engineer at no extra cost to Client. However, where

material is supplied by Client, all testing charges shall be borne by Client; but

transportation of material samples to the laboratory shall have to be done by

Contractor at no extra cost.

D.6.5.3 Sampling and testing shall be as per IS : 2386 under the supervision of Engineer.

The cost of all tests, sampling etc. shall be borne by Contractor.

D.6.5.4 Water to be used shall be tested to comply with requirement of IS :

D.6.5.5 Contractor shall furnish manufacturer’s test certificates and technical literature for

the admixture proposed to be used. If directed the admixture shall be got tested

and approved laboratory at no extra cost.

D.6.6 STORING OF MATERIALS

D.6.6.1 All material shall be stored in a manner so as to prevent its deterioration and

contamination which would preclude its use in the works. Requirements of IS :

4082 shall be complied with.

D.6.6.2 Contractor will have to make his own arrangements for the storage of adequate

quantity of cement even if cement is supplied by Client. Cost of such rejected

cement, where cement is supplied by Client, shall be recovered at issue rate or

open market rate which ever is higher. Cement bags shall be stored in dry

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

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

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

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

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

D.6.6.3 Each size of coarse and fine aggregates shall be stacked separately and shall be

protected from leaves and contamination with foreign material. The stacks shall

be on hard, clean, free draining bases, draining away from the concrete mixing

D.6.6.4 Contractor shall make his own arrangements for storing water at site in tanks to

prevent contamination.

D.6.6.5 The reinforcement shall be stacked on top of timber sleepers to avoid contract

with ground / water. Each type and size shall be stacked separately.

D.6.7.1 General

Concrete grade shall be as designated on drawings. In concrete grade M15, M20, M25

etc. the number represents the specified characteristic compressive strength of 150 mm

cube at 28 days, expressed in N/sq.mm as per IS : 456. Concrete in the works shall be

“Design Mix Concrete” or “Normal Mix Concrete”. All concrete works of grade M5,

M7.5 and M10 shall be Nominal whereas all other grades, M15 and above, shall be

Design Mix Concrete.

D.6.7.2 Design Mix Concrete

D.6.7.2.1 Mix Design and Testing

D.6.7.2.1.1 For Design Mix Concrete, the mix shall be designed according to IS : 10262 and

SP: 23 to provide the grade of concrete having the required workability and

characteristics strength not less than appropriate values given in IS : 456. The

design mix shall in addition be such that it is cohesive and does not segregate and

should result in dense and durable concrete and also capable of giving the finish

as specified. For water retaining structures, the mix shall also result in water-tight

concrete. The Contractor shall exercise great care while designing the concrete

mix and executing the works to achieve the desired result.

D.6.7.2.1.2 Unless otherwise specifically mentioned, the minimum cement content for Design Mix

Concrete shall be as given below.

Grade of Concrete Minimum Cement Content in

Kg/Cu.m of concrete

The minimum cement content stipulated above shall be adopted irrespective of

whether the Contractor achieves the desired strength with less quantity of cement.

The Contractor’s quoted rates for concrete shall provide for the above eventually

and nothing extra shall become payable to the Contractor in this account. Even in

the case where the quantity of cement required is higher than that specified above

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

become payable to the Contractor.

D.6.7.2.1.3 It shall be Contractor’s sole responsibility to carry out the mix designs at his own

cost. He shall furnish to Engineer at least 30 days before concreting operations, a

statement of proportions proposed to be used for the various concrete mixes and

the strength results obtained. The strength requirements of the concrete mixes

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

Grade of Concrete Minimum Specified compressive

Compressive Strength strength

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

D.6.7.2.1.4 A range of slumps, which shall generally be used for various types of construction

unless otherwise instructed by the Engineer is given below :

Structure / Member

Slump in millimeters

Maximum Minimum

Reinforced foundation walls and footings 75

Plain footings, caissons and substructure walls 75

T.G. and massive compressor foundations 50

Slabs, beams and reinforced walls 100

Pumps and miscellaneous equipment 75

Building columns 100

Heavy mass construction 50

D.6.7.2.2 Batching and Mixing of Concrete

D.6.7.2.2.1 Proportions of aggregates and cement, as decided by the concrete mix design, shall be by

weight. These proportions shall be maintained during subsequent concrete batching by

means of weigh batchers capable of controlling the weights within one percent of the

D.6.7.2.2.2 Amount of water added shall be such as to produce dense concrete of required

consistency, specified strength and satisfactory workability and shall be so adjusted to

account for moisture content in the aggregates. Water cement ratio specified shall be

maintained. Each time the work stops, the mixer shall be cleaned out, and while

recommencing, the first batch shall have 10% additional cement to allow for sticking in

D.6.7.2.2.3 Arrangement should be made by Contractor to have the cubes tested in an approved

laboratory or in field at his own expense, with prior consent of Engineer. Sampling and

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

D.6.7.3 Nominal Mix Concrete

D.6.7.3.1 Mix Design and Testing

D.6.7.3.1.1 Mix design and preliminary tests are not necessary for Nominal mix Concrete. However

works tests shall be carried out as per IS : 456. Proportions for Nominal Mix Concrete

and water / cement ratio may by adopted as per Table 3 of IS : 456. However it will be

Contractor’s sole responsibility to adopt appropriate nominal mix proportions to yield the

specified strength.

D.6.7.3.2 Batching and Mixing Concrete

D.6.7.3.2.1 Based on the adopted nominal mixes, aggregates and cement shall be measured by

D.6.8 FORM WORK

D.6.8.1 Form work shall be all inclusive and shall consist of but not limited to shores,

bracings, sides of footings, walls, beams and columns, bottom of slabs etc.

including ties, anchors, hangers, inserts, falsework, wedges etc.

D.6.8.2 The design and engineering of the formwork as well as its construction shall be

the responsibility of Contractor. However, if so desired by Engineer the drawings

and calculations for the design of the formwork shall be submitted to Engineer for

D.6.8.3 Formwork shall be designed to fulfill the following requirements :

a) Sufficiently rigid and tight to prevent loss of grout or mortar from the

concrete at all stages and appropriate to the methods of placing and

b) Made of suitable materials.

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

within the specified tolerance limits.

d) Capable of withstanding without deflection the worst combination of self

weight, reinforcement and concrete weight, all loads and dynamic effects

arising from construction and compacting activities, wind and weather

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

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

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

h) Capable of being cleaned and / or coated if necessary immediately prior to

casting the concrete; design temporary openings where necessary for these

purposes and to facilitate the preparation of construction joints.

D.6.8.4 The formwork may be of timber, plywood, steel, plastic or concrete depending

upon the type of finish specified. Sliding forms and slip for may be used with the

approval of Engineer. Timber for formwork shall be well seasoned, free from

sap, shakes, loose knots, work holes, warps and other surface defects. Joints

between formwork and formwork and between formwork and structures shall be

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

D.6.8.5 The faces of formwork coming in contact with concrete shall be cleaned and two

coats of approved mould oil applied before fixing reinforcement. All rubbish,

particularly chippings, shavings, sawdust, wire pieces dust etc. shall be removed

from the interior of the forms before the concrete is placed. Where directed,

cleaning of forms shall be done by blasting with a jet of compressed air at no

D.6.8.6 Forms intended for reuse shall be treated with care. Forms that have deteriorated

shall not be used. Before reuse, all forms shall be thoroughly scraped, cleaned,

nails removed, holes suitably plugged, joints repaired and warped lumber replaced

to the satisfaction of Engineer. The Contractor shall equip himself with enough

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

D.6.8.7 Permanent formwork shall be checked for its durability and capability with

adjoining concrete before it is used in the structure. It shall be properly anchored

to the concrete.

D.6.8.8 Wire ties passing through beams, columns and walls shall not be allowed. In their

placed bolts passing through sleeves shall be used. Formwork spacers left in situ

shall not impair the desired appearance or durability of the structure by causing

spalling, rust staining or allowing the passage or moisture.

D.6.8.9 For liquid retaining structures sleeves shall not be provided for through bolts or

shall through bolts be removed if provided. The bolts, in the latter case, shall be

cut at 25 mm depth from the surface and the hole made good by cement mortar of

the same proportion as the concrete just after striking the formwork.

D.6.8.10 Where specified or shown on drawings, all corners and angles exposed in the

finished structure shall have chamfers or fillets of 20 mm x 20 mm size.

D.6.8.11 Forms for substructure may be omitted when, in the opinion of Engineer, the open

excavation is firm enough (in hard non-porous soils) to act as a form. Such

excavations shall be slightly larger, as directed by Engineer, than that required as

per drawing to compensate for irregularities in excavation.

D.6.8.12 The Contractor shall provide adequate props carried down to a firm bearing

without overloading any of the structures.

D.6.8.13 The shuttering for beams and slabs shall be so erected that the side shuttering of

beams can be removed without disturbing the bottom shuttering. If the shuttering

for a column is erected for the full height of the column, one side shall be built up

in sections as placing of concrete proceeds or windows left for placing concrete

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

Contractor shall temporarily and securely fix items to be cast in (embedments /

inserts) in a manner that will not hinder the striking of forms or permit loss of

D.6.8.14 Formwork showing excessive distortion, during any stage of construction, shall be

repositioned and strengthened. Placed concrete affected by faulty form work,

shall be entirely removed and formwork corrected prior to placement of new

concrete at the cost of the Contractor.

D.6.8.15 The striking time for formwork shall be determined based on following

a) Development of adequate concrete strength;

b) Permissible deflection at time of striking form work;

c) Curing procedure employed – its efficiency and effectiveness;

d) Subsequent surface treatment to be done;

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

f) Ambient temperature; and

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

taken to prevent damage to the concrete).

D.6.8.16 Under normal circumstances (generally where temperatures are above 20 Deg. C)

forms may be struck after expiry of the time period given in IS : 456, unless

directed otherwise by Engineer. For portland pozzolona / slag cement the

stripping time shall be suitably modified as directed by the Engineer. It is the

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

has developed sufficient strength to support itself, does not undergo excessive

deformation and resist surface damage and any stressed arising during the

construction period.

D.6.9 Reinforcement Workmanship

D.6.9.1 Reinforcing bars supplied bent or in coils shall be straightened cold without

damage at no extra cost. No bending shall be done when ambient temperature is

below 5 Deg. C. Local warming may be permitted if steel is kept below

D.6.9.2 All bars shall be accurately bent gradually and according to the sizes and shapes

shown on the drawings / schedules or as directed by Engineer.

D.6.9.3 Re-bending or straightening incorrectly bent bars shall not be done without

approval of Engineer.

D.6.9.4 Reinforcement shall be accurately fixed and maintained firmly in the correct

position by the use of blocks, spacers, chairs, binding wire etc. to prevent

displacement during placing and compaction of concrete. The tied in place

reinforcement shall be approved by Engineer prior to concrete placement.

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

corrosion of the reinforcement and not cause spalling of the concrete cover.

D.6.9.5 Binding wire shall be 16 gauge soft annealed wire. Ends of the binding wire shall

be bent away from the concrete surface and in no case encroach into the concrete

D.6.9.6 Substitution of reinforcement, laps / splices not shown on drawing shall be subject

to Engineer’s approval.

D.6.10 TOLERANCES

D.6.10.1 Tolerance for formed and concrete dimensions shall be as per IS : 456 unless

specified otherwise.

D.6.10.2 Tolerances specified for horizontal or vertical building lines or footings shall not

be construed to permit encroachment beyond the legal boundaries.

D.6.11 PREPARATION PRIOR TO CONCRETE PLACEMENT

D.6.11.1 Before concrete is actually placed in position, the inside of the formwork shall be

cleaned and mould oil applied, inserts and reinforcement shall be correctly

positioned and securely held, necessary openings, pockets etc. provided.

D.6.11.2 All arrangements formwork, equipment and proposed procedure, shall be

approved by Engineer. The Contractor shall maintain separate Pour Card for

each pour as per the format enclosed and shall produce before commencement

of concreting to Engineer-in-charge.

D.6.12 TRANSPORTING, PLACING AND COMPACTING CONCRETE

D.6.12.1 Concrete shall be transported from the mixing plant to the formwork with

minimum time lapse by methods that shall maintain the required workability and

will prevent segregation, loss of any ingredients or ingress of foreign matter or

D.6.12.2 In all cases concrete shall be deposited as nearly as practicable directly in its final

position. To avoid segregation concrete shall not be rehandled or caused to flow.

For locations where direct placement is not possible and in narrow forms. The

Contractor shall provide suitable drops and ‘Elephant Trunks’. Concrete shall not

be dropped from a height of more than 1.0 m as stipulated in clause D.6.8.13.

D.6.12.3 Concrete shall not be placed in flowing water. Under water, concrete shall be

placed in position by tremies or by pipeline from the mixer and shall never be

allowed to fall freely through the water.

D.6.12.4 While placing concrete the Contractor shall proceed as specified below and also

ensure the following :

a) Continuously between construction joints and predetermined abutments.

b) Without disturbance to forms or reinforcement.

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

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

enter open ends of pipes and conduits etc.

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

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

purpose and by using suitable chutes or pipes.

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

g) Without disturbing the unsupported sides of excavations; prevent

contamination of concrete with earth. Provide sheeting if necessary. In

supported excavations, withdraw the lining progressively as concrete is

h) If placed directly onto hardcore or any other porous material, dampen the

surface to reduce loss of water from the concrete.

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

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

D.6.12.5 Concrete shall normally be compacted in its final position within thirty minutes of

leaving the mixer. Concrete shall be compacted during placing with approved

vibrating equipment without causing segregation until it forms a solid mass free

from voids thoroughly worked around reinforcement and embedded fixtures and

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

at points not more than 450 mm apart and withdrawn slowly till air bubbles cease

to come to surface, leaving no voids. When placing concrete in layers advancing

horizontally, care shall be taken to ensure adequate vibration, blending and

melding of the concrete between successive layers. Vibrators shall not be allowed

to come in contact with reinforcement, formwork and finished surfaces after start

of initial set. Over vibration shall be avoided.

D.6.12.6 Concrete may be conveyed and placed by mechanically operated equipment after

getting the complete procedure approved by Engineer. The slump shall be held to

the minimum necessary for conveying concrete by this method. When concrete is

to be pumped concrete mix shall be specially designed to suit pumping. Care

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

D.6.12.7 Except when placing with slip forms, each placement of concrete in multiple lift

work, shall be allowed to set for at least 24 hours after the final set of concrete

before the start of subsequent placement. Placing shall stop when concrete

reaches the top of the opening in walls or bottom surface of slab, in slab and beam

construction, and it shall be resumed before concrete takes initial set but not until

it has had time to settle as determined by Engineer. Concrete shall be protected

against damage until final acceptance.

D.6.13 MASS CONCRETE WORKS

D.6.13.1 Sequence of pouring for mass concrete works shall be as approved by Engineer.

The Contractor shall exercise great care to prevent shrinkage cracks and shall

monitor the temperature of the placed concrete if directed.

D.6.14.1 Curing and protection shall start immediately after the compaction of the concrete

to protect it from :

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

(b) leaching out by rain and flowing water;

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

(d) high internal thermal gradients;

(e) low temperature of frost;

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

bond to the reinforcement.

D.6.14.2 All concrete, unless directed otherwise by Engineer, shall be cured by use of

continuos sprays or ponded water or continuously saturated coverings of sacking,

canvas, hessain or other absorbent material for the period of complete hydration

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

used for mixing.

D.6.14.3 Where a curing membrane is directed to be used by the Engineer, the same shall

be of a non-wax base and shall not impair the concrete finish in any manner. The

curing compound to be used shall be got approved from the Engineer before use

and shall be applied with spraying equipment capable of a smooth, even textured

D.6.14.4 Curing may also be done by covering the surface with an impermeable material

such as polyethylene, which shall be well sealed and fastened.

D.6.14.5 Extra precautions shall be exercised in curing concrete during cold and hot

D.6.15 CONSTRUCTION JOINTS AND KEYS

D.6.15.1 Construction joints will be as shown on the drawing or as approved by Engineer.

Concrete shall be placed without interruption until completion of work between

construction joints. If stopping of concreting becomes unavoidable anywhere, a

properly formed construction joint shall be made with the approved of Engineer.

D.6.15.2 Dowels for concrete work, not likely to be taken up in the near future, shall be

coated with cement slurry and encased in lean concrete as indicated on the

drawings or as directed by Engineer.

D.6.15.3 Before resuming concreting on a surface which has hardened all laitance and

loose stone shall be thoroughly removed by wire brushing / hacking and surface

washed with high pressure water jet and treated with thin layer of cement slurry

for vertical joints and a 15 mm thick layer of cement sand mortar for horizontal

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

D.6.15.4 When concreting is to be resumed on a surface which has not fully hardened, all

laitance shall be removed by wire brushing, the surface wetted, free water

removed and a coat of cement slurry applied. On this a layer of concrete not

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

work. Thereafter work shall proceed in the normal way.

D.6.16 FOUNDATION BEDDING

D.6.16.1 All earth surfaces upon which or against which concrete is to be placed, shall be

well compacted and free from standing water, mud or debris. Soft or spongy area

shall be cleaned out and back filled with either soil cement mixture, lean concrete

or clean sand compacted as directed by Engineer. The surfaces of absorptive soils

shall be moistened.

D.6.16.2 Concrete shall not be deposited on large sloping rock surfaces. The rock shall be

cut to form rough steps or benches by picking, barring or wedging. The rock

surface shall be kept wet for 2 to 4 hours before concreting.

D.6.17 FINISHES

D.6.17.1 General

D.6.17.1.1 The formwork for concrete works shall be such as to give the finish as specified.

The Contractors shall make good as directed any unavoidable defects consistent

with the type of concrete and finish specified; defects due to bad workmanship

(e.g. damaged or misaligned forms, defective or poorly compacted concrete) will

not be accepted. The Contractor shall construct the formwork using the correct

materials and to meet the requirements of the design and to produce finished

concrete to required dimensions, plumbs, planes and finishes.

D.6.17.2 Surface finish Type F1

D.6.17.2.1 This type of finish shall be for non-exposed concrete surface against which back

fill or concrete is to be placed. The main requirement is that of dense, well

compacted concrete. No treatment is required except repair of defective areas,

filling all form tie holes and cleaning up of loose or adhering debris. For surfaces

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

of surface irregularities which could interfere with proper and effective

application or waterproofing material specified for use.

D.6.17.3 Surface finish Type F2

D.6.17.3.1 This type of finish shall be for all concrete work which will be exposed to view

upon completion of the job. The appearance shall be that of a smooth dense,

well-compacted concrete showing the slight marks of well fitted shuttering joints.

The Contractor shall make good any blemishes.

D.6.17.4 Surface finish Type F3

D.6.17.4.1 This type of finish shall be for concrete work which will be exposed to view but

to give an appearance of smooth, dense, well-compacted concrete with no shutter

marks, stain free and with no discoloration, blemishes, arrises, air holes etc. Only

lined or coated plywood with very tight joints shall be used to achieve this finish.

The panel size shall be uniform and as large as practicable. Any minor blemishes

that might occur shall be made good by Contractor.

D.6.17.5 Integral cement finish on concrete floor

D.6.17.5.1 In all cases where integral cement finish on a concrete floor has been specified,

the top layer of concrete shall be screened off to proper level and tamped with

tamper having conical projections so that the aggregate shall be forced below the

surface. The surface shall be finished with a wooden float and a trowel with

pressure. The finish shall be continued till the concrete reaches its initial set. No

cement or cement mortar finish shall be provided on the surface. Where

specified, a floor hardener as approved by the Engineer shall be supplied and used

as recommended by the manufacturer.

D.6.18 REPAIR AND REPLACEMENT OF UNSATISFACTORY CONCRETE

D.6.18.1 Immediately after the shuttering is removed, all the defective areas such as honey-

combed surfaces, rough patches, holes left by form bolts etc. shall be brought to

the notice of Engineer who may permit patching of the defective areas or reject

the concrete work.

D.6.18.2 All through holes for shuttering shall be filled for full depth and neatly plugged

flush with surface.

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

cost to Client.

D.6.18.4 For patching of defective areas all loose materials shall be removed and the

surface shall be prepared as directed by the Engineer.

D.6.18.5 Bonding between hardened and fresh concrete shall be done either by placing

cement mortar or by applying epoxy. The decision of the Engineer as to the

method of repairs to be adopted shall be final and binding on the Contractor and

no extra claim shall be entertained on this account. The surface shall be saturated

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

use of epoxy for bonding fresh concrete shall be carried out as directed by

D.6.19 VACUUM DEWATERING OF SLABS

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

vacuum dewatering including all operations such as poker vibration, surface

vibration, vacuum processing, floating and trowelling as per equipment

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

Engineer’s approval.

D.6.20 HOT WEATHER REQUIREMENTS

D.6.20.1 Concreting during hot weathers shall be carried out as per IS : 7861 (Part – I)

D.6.20.2 Adequate provisions shall be made to lower concrete temperatures which shall not

exceed 40 Deg. C at the time of placement of fresh concrete.

D.6.20.3 Where directed by Engineer, Contractor shall spray non-wax based curing

compound of unformed concrete surfaces at no extra costs.

D.6.21 COLD WEATHER REQUIREMENTS

D.6.21.1 Concreting during cold weather shall be carried out as per IS : 7861 (Part-II).

D.6.21.2 The ambient temperature during placement and upto final set shall not fall below

5 Deg. C. Approved antifreeze / accelerating additives shall be used where

D.6.21.3 For major and large scale concreting works the temperature of concrete at times

of mixing and placing, the thermal conductivity of the formwork and its insulation

and stripping period shall be closely monitored.

D.6.22 LIQUID RETAINING STRUCTURES

D.6.22.1 The Contractor shall take special care of concrete for liquid retaining structures,

underground structures and those others specifically called for to guarantee the

finish and water tightness.

D.6.22.2 The minimum level of surface finish for liquid retaining structures shall be type

F2. All such structures shall be hydro-tested.

D.6.22.3 The Contractor shall include in his price of hydro-testing of structure, all

arrangements for testing such as temporary bulk heads, pressure gauges, pumps,

D.6.22.4 Any temporary arrangements that may have to be made to ensure stability of the

structures shall also be considered to have been taken into account while quoting

D.6.22.5 Any leakage that may occur during the hydro-test or subsequently during the

defects liability period or the period for which the structure is guaranteed shall be

effectively stopped either by cement / epoxy pressure grouting, guniting or such

other methods as may be approved by the Engineer. All such rectification of the

Client / Engineer at no extra cost to the Client.

D.6.23 TESTING CONCRETE STRUCTURES FOR LEAKAGE

D.6.23.1 Hydro-static test for water tightness shall be done at full storage by Engineer, as

described below :

D.6.23.1.1 In case of structures whose external faces are exposed, such as elevated tanks, the

requirements of the test shall be deemed to be satisfied if the external faces show

no sign of leakage or sweating and remain completely dry during the period of

observation of seven days after allowing a seven day period for absorption after

filling with water.

D.6.23.1.2 In the case of structures whose external faces are submerged and are not

accessible for inspection, such as underground tanks, the structures shall be filled

with water and after the expiry of seven days after the filling, the level of the

surface of the water shall be recorded. The level of water shall be recorded again

at subsequent intervals of 24 hrs. over a period of seven days. Backfilling shall be

withheld till the tanks are tested. The total drop in surface level over a period for

seven day shall be taken as an indication of the water tightness of the structure.

The Engineer shall decide on the actual permissible nature of this drop in the

surface level, taking into account weather the structures are open or closed and the

corresponding effect it has on evaporation losses. Unless specified otherwise, a

structure whose top is covered shall be deemed to be water tight if the total drop

in the surface level over a period of seven days does not exceed 40 mm.

D.6.23.1.3 Each compartment / segment of the structure shall be tested individually and then

D.6.23.2 For structures such as pipes, tunnels etc. the hydro-static test shall be carried out

by filling with water, after curing as specified, and subjecting to the specified test

pressure for specified period. If during this period the loss of water does not

exceed the equivalent of the specified rate, the structure shall be considered to

have successfully passed the test.

D.6.24 OPTIONAL TESTS

D.6.24.1 If Engineer feels that the materials i.e. cement, sand coarse aggregates,

reinforcement and water are not in accordance with the specifications or if

specified concrete strengths are not obtained, he may order tests to be carried out

on these materials in laboratory, to be approved by the Engineer, as per relevant

IS Codes. Client shall pay only for the testing of material supplied by the Client,

otherwise Contractor shall have to pay for the tests. Transporting of all material

to the laboratory shall however be done by the Contractor at no extra cost to

D.6.24.2 In the even of any work being suspected of faulty material or workmanship

requiring its removal or if the works cubes do not give the stipulated strengths,

Engineer reserves the right to order the Contractor to take out cores and conduct

tests on them or do ultrasonic testing or load testing of structure, etc. All these

tests shall be carried out by Contractor at no extra cost to the Client.

Alternatively Engineer also reserves the right to ask the Contractor to dismantle

and re-do such unacceptable work at the cost of Contractor.

D.6.24.3 If the structure is certified by Engineer as having failed, the cost of the test and

subsequent dismantling / reconstruction shall be borne by Contractor.

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

mentioned above.

D.6.25 GROUTING

D.6.25.1 Grout shall be provided as specified on the drawings. The proportion of standard

Grout shall be such as to produce a flowable mixture consistent with minimum

water content and shrinkage. Surface to be grouted shall be thoroughly roughened

and cleaned. All structural steel elements to be grouted, shall be cleaned of oil,

grease, dirt etc. The use of hot, strong caustic solution for this purpose will be

permitted. Prior to grouting, the hardened concrete shall be saturated with water

and just before grouting water in all pockets shall be removed. Grouting once

started shall be done quickly and continuously. Variation in grout mixes and

procedures shall be permitted if approved by ENGINEER. The grout proportions

shall be limited as follows :

Use Grout Thickness Mix Proportions W/C Ratio

a) Fluid mix Under 25 mm One part Portland

cement to one part sand.

b) General mix 25 mm and over but One part Portland

less than 50 mm cement to 2 part sand.

c) Stiff mix 50 mm and over One part Portland

cement to 3 part sand.

D.6.25.2 Non Shrink Grout

D.6.25.2.1 Non-shrink grout where called for in the Schedule of Quantities or specified on

the drawings shall be provided in strict accordance with the manufacturer’s

instructions/ specifications on the drawings.

D.6.26 INSPECTION

D.6.26.1 All materials, workmanship and finished construction shall be subject to

continuous inspection and approval of Engineer. Materials rejected by Engineer

shall be expressly removed from site and shall be replaced by Contractor

immediately at no extra cost to Client.

D.6.27 CLEAN-UP

D.6.27.1 Upon the completion of concrete work, all forms, equipment, constructiontools,

protective coverings and any debris, scraps of wood etc. resulting from the work

shall be removed and the premises left clean.

D.6.28 ACCEPTANCE CRITERIA

D.6.28.1 Any concrete work shall satisfy the requirements given below individually

and collectively for it to be acceptable.

a) Properties of constituent materials;

b) Characteristic compressive strength;

c) Specified mix proportions;

d) Minimum cement content;

e) Maximum free-water / cement ratio;

f) Workability;

g) Temperature of fresh concrete;

h) Density of fully compacted concrete;

i) Cover to embedded steel;

k) Tolerances in dimensions;

l) Tolerances in levels;

n) Surface finishes;

o) Special requirements such as :

i) water tightness;

ii) resistance to aggressive chemicals

iii) resistance to freezing and thawing

iv) very high strength

v) improved fire resistance

vi) wear resistance

vii) resistance to early thermal cracking

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

work shall be final and binding of the Contractor.

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

remedial measures are feasible so as to render the work acceptable. The

Engineer shall in that case direct the Contractor to undertake and execute

the remedial measures. These shall be expeditiously and effectively

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

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

Client for executing the remedial measures.

D.6.29 MODE OF MEASUREMENT AND PAYMENT

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

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

inserts, etc. shall be entertained unless separately provided for in the schedule of

quantities. No extra claim shall also be entertained due to change in the number,

position and / or dimensions of holes, slots or openings, sleeves, inserts or on

account of any increased lift, lead of scaffolding etc. All these factors should be

take into consideration while quoting the unit rates. Unless provided for in the

Schedule of Quantities the rates shall also include fixing insets in all concrete

work, whenever required.

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

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

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

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

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

payment for shuttering work provided for such holes, pockets, etc. will not be

made. Similarly the unit rates for concrete work shall be inclusive or exclusive of

shuttering as provided for in the Schedule of Quantities.

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

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

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

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

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

finishing, hoisting and setting in position including setting mortar, provision of

lifting arrangement etc. complete. Reinforcement and inserts shall be measured

and paid for separately under respective item rates.

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

drawings or as approved by Engineer shall be measured and paid for, irrespective

of the level or height at which the work is done. The unit rates for reinforcement

shall include lap chairs, spacer bars etc.

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

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

scaffolding etc. complete. Only the net area of concrete formed (shuttered) shall

be measured for payment.

CONCRETE POUR CARD

Client : Date :

Project : Structure :

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

Drg. NO. : Start/ Completion Time :

Concrete Grade : Mixing Time :

Sr. Item Contractor’s Engineer’s Remarks

No. Rep. Signature Signature

1 Centre lines Checked

2 Form work and Staging checked for

Accuracy, Strength & finish

3 Reinforcement Checked

4 Cover to Reinforcement Checked

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

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

7 Embeded Parts checked Civil

(Location and Plumb)

Pour Authorised site Engineer

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

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

from removal (Only of Beams of

over 1 M. span & Important

structures link T.G etc.)

9 Construction joint location & time

(If not as per Drawing)

10 Cement Consumption in Kgs.

11 Numbers of cubes and

identification mark

12 Test cube results (7 Days /

13 Concrete Condition on Form

removal Very Good/ Good / Fair / Poor

Engineer-in-Charge Contractor

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

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

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

4. Under remarks indicate deviations from drawings & specifications

congestion in reinforcement if any unusual occurrences such as failure

of equipment sinking of supports / props, heavy rain affecting

reasonable. Poor compaction improper curing other deficiencies

observations etc.

D.6.31 MATERIALS : STRUCTURAL STEEL

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

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

D.6.31.1 Steel for Pins and Rollers

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

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

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

general engineering purposes as appropriate).

D.6.31.2 Bolts and Nuts

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

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

D.6.31.3 Welding Electrode

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

specification for covered electrodes for metal arc welding of mild steel.

D.6.31.4 Workmanship

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

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

assembly fit accurately together. Notes or specifications on the drawings

supplied by the Engineer-in-Charge/consulting Engineer, are to be constructed

as superseding or cancelling any clause of this specifications with which they

conflict. On all drawings dimensions shown in figures shall be acted in

preference to measurement by scale.

D.6.31.5 Straightening

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

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

by hammering. All joggles and knees shall be formed by pressure and where

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

D.6.31.6 Cutting

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

cut and ground accurately to the required dimensions and shape.

D.6.31.7 Bolts Holes

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

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

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

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

D.6.31.8 Welding

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

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

requirement, the following care shall be taken :-

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

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

to the recommendations of the manufacturers of the electrode being

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

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

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

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

other surface deposit.

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

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

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

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

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

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

broken tack welds shall be removed before final welding.

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

by gas cutting.

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

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

not be of less than the required cross section.

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

linseed oil after all slag has been removed.

D.6.31.9 Safety Precautions

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

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

equipped with suitable filter lenses.

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

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

perform the welding operation. For site welding shelter should be

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

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

standard of workmanship and the quality of materials comply with requirements

laid in these specification.

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

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

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

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

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

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

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

welding operations.

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

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

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

D.6.31.10 Joints

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

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

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

D.6.31.11 Assembling

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

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

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

pieces. Work shall be kept properly bolted together and no drifting shall be

allowed except for the purpose of drawing assembled sections together in

accuracy’s in matching of holes may be corrected. But drifting to enlarge holes

is prohibited. Failure in any of the above respect will involve the rejection of

defective members.

D.6.31.12 Mode of Measurement and Payment

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

latest revision so far as applicable.

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

D.6.32 MATERIALS : REINFORCEMENT

D.6.32.1 Specification for TMT bars reinforcement

D.6.32.1.1 Scope of work :

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

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

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

corrossion resistant steel bars approved by the Engineer-in-charge. This

includes cuttings, bending, binding, placing, with all equipments and labour

required for the work as directed by the City Engineer, AMC, Ahmedabad and

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

D.6.32.1.2 Bending of Reinforcement :

Reinforcing steel shall conform accurately to the dimensions shown on

relevant drawings and conforming to the relevant IS codes (latest revision)

Bars shall be bent cold to the specified shape and dimensions or as directed by

the City Engineer, AMC, Ahmedabad using a proper bar bender, operated by

hand or power to attain proper radii of bends.

Bars shall not be bent or strainghened in a manner that will cause injury to the

Bars bent during transport or handling shall be straightened before being used

on work; they shall not be heated to facilitate bending.

The bending of the TMT bars shall be carried out as per the following :

Sr. No. Operation Size TMT Fe-500

1 Bend Upto 22 mm dia. 3d

Over 22 mm dia. 4d

2 Rebend Upto 10 mm dia. 4d

Over 10 mm dia. 5d

D.6.32.1.3 Placing of Reinforcement :

All reinforcing bars shall be accurately placed in the exact position shown on

the drawings, and shall be securely held in position during placing of concrete

by annealed binding wire not less than 1 mm. in size and conforming to IS :

280 and by using stays blocks or metal chairs, spacer, metal hangers,

supporting wires or other approved devices at sufficiently close intervals. Bars

will not be allowed to sag between supports nor displaced during concreting

or any other operation over the work. All devices used for positioning shall be

of noncorrodible material. Wooden and metal supports will not extend to the

surface of concrete, except where shown on the drawings, Placing bars on

layers of freshly laid concrete as the work progresses for adjusting bar spacing

will not be allowed. Pieces of broken stone, brick or 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 untill completely embedded in concrete. Special care shall be

exercised to prevent any displacement of reinforcement in concrete already

To protect reinforcement from corrosion, concrete cover shall be provided as

indicated on the drawings. All bars protruding from concrete to which other

bars are to be spliced and which are likely to be exposed for an indefinite

period shall be protected by a thick coat of neat cement grout.

In the case of columns and walls, vertical bars shall be kept in normal position

with timber templates having slots accurately cut in for bar position. Such

templates shall be removed after the concreting has progressed upto a level

just below them.

Bars crossing each other, where required, shall be secured by binding wire

(annealed) of size not less than 1 mm and conforming to IS : 280 in such a

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 as directed by the City

Engineer, AMC, Ahmedabad. When practicable, overlapping bars shall not

touch each other, but be kept apart by 25 mm or 1 1/4 times the maximum size

of the coarse aggregates whichever is greater, by concrete between them.

Where this is not feasible, overlapping bars shall be bound with annealed steel

wire, not less than 1mm thickness twisted tight in eight shape around the

lapped bars. The overlaps shall be staggered for different bars and located at

fixed locations only along the span where neither shear nor bending moment

D.6.32.1.4 Welding of Bars

Welding of TMT bars can be permitted if specified on the drawings, joints of

reinforcement bars shall be butt welded so as to transmit their full strength.

Welded joints shall preferably be located at points where 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 33 per cent of the

rods are welded. No pre-warming or post heat treatment is necessary.

Interpass temperature should be limited to 200oC with low heat input and

equivalent strength low hydrogen type electrode. Suitable means shall be

provided for holding the bars securely in position during welding. It must be

ensured that no voids are left in welding and when welding is done in 2 or

stages, previous surface shall be cleaned property. 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. Welded

pieces of reinforcement shall be tested. Specimens shall be taken from the

actual site and their number and frequency of tests shall be as directed by the

Additional City Engineer, Central Zone, AMC, Ahmedabad.

The TMT bars shall be tested for any or all of the following tests as

directed by the Engineer-in-charge.

(1) Alternate immersion test

(2) Salt spray test

(3) Atmospheric exposure test

(4) Sluphur dioxide test

(5) Potentio dynamic test

D-7 : GENERAL BUILDING WORKS

D.7.1.1.1 This specification covers the general requirement for brick and stone masonry,

plastering, flooring, doors, windows, ventilators, wood work, water proofing,

false ceiling, painting and such other related works forming a part of this job,

which may be required to be carried out though not specifically mentioned above.

The work under this specifications shall consist of furnishing of all tools, plants,

labour, materials, any and everything necessary for carrying out the work.

D.7.2 APPLICABLE CODES AND SPECIFICATIONS

D.7.2.1 The following codes, standards and specifications are made a part of this

specifications. All standards, tentative specification, specification, codes of

practices referred to herein shall be latest edition including all applicable official

amendments and revisions.

D.7.2.2 In case of discrepancy between this specification and those referred to herein,

these specifications shall govern.

IS : 1077 - Common brunt clay bricks

IS : 3102 - Classification of brunt clay bricks

IS : 2180 - Burnt clay building bricks, heavy duty

IS : 3495 - Method of sampling and testing clay building bricks

IS : 2691 - Burnt clay facing bricks

IS : 2212 - Code of practice for brick work

IS : 2185 - Load bearing hollow concrete blocks

IS : 5498 - Lime-Cement-Cinder hollow concrete blocks

IS : 3115 - Lime-Cement-Cinder soil blocks

IS : 1597 - Code of practice for construction of stone masonry

IS : 2394 - Code of practice for application of lime plaster finish

IS : 2645 - Integral cement water proofing compounds

IS : 1443 - Code of practice for laying and finishing of cement concrete

IS : 2114 - Code of practice for laying in situ terrazzo floor finish

IS : 777 - Glazed Earthenware tiles

IS : 4021 - Timber door, window and ventilator frames

IS : 2202 - Wooden flush door shutters (Solid Core Type)

IS : 1003 - Timber panelled and glazed shutters (Parts – I and II)

IS : 4020 - Methods of tests for wooden flush doors : Type tests

IS : 1761 - Transparent sheet glass for glazing and framing purposes

IS : 4351 - Steel door frames

IS : 1038 - Steel doors, windows and ventilators

IS : 1081 - Codes of practice for fixing and glazing of metal (steel and

aluminum) doors, windows and ventilators

IS : 5807 - Method of test for clear finishes for wooden furniture (Part-I

IS : 1477 - Code of practice for painting of ferrous metals in buildings

(Part-I & II) and allied finishes.

IS : 2338 - Code of practice for finishing of wood and wood-based

(Part-I) materials

IS : 437 - Distemper, dry, colour as required

IS : 428 - Distemper, oil emulsion, colour as required

IS : 2395 - Code of practice for painting concrete, masonry and plaster

IS : 3384 - Bituminous primer for use in water proofing and damp

IS : 1580 - Bituminous compound for water proofing and caulking

IS : 1322 - Bitumen felts for water proofing and damp proofing

IS : 1346 - Code of practice for water proofing of roofs with bitumen

D.7.3 BRICK WORK

D.7.3.1 Bricks used in works shall confirm to the relevant Indian Standards. They shall

be sound, hard, homogenous in texture, well bunt in kiln without being vitrified,

table moulded, deep red, cherry or copper coloured, of regulator shape and size

and shall have sharp and square edges and parallel faces. The bricks shall be free

from pores, chips, flaws or humps or any kind. Bricks containing unground

particles and / or which absorb water more than 1/6th of their weight when soaked

in water for twenty-four hours shall be rejected. Over-burnt or under-burnt bricks

shall be liable to rejection. The bricks shall give a clear ringing sound when

struck and shall have a minimum crushing strength of 35 Kg/sq. cm. Unless

otherwise noted in drawings. The classes and quality requirements of bricks shall

be as laid down in IS :

D.7.3.2 The size of the brick shall be 23.0 x 11.5 x 7.5 cm unless otherwise specified; but

tolerance upto (+/-) 3 mm in each direction shall be permitted. However, bricks

conforming in size to IS : 1077 could be used. Bricks shall be provided with

frogs. Only full size bricks shall be used for masonry work. Brick bats shall be

used only with the permission of the Engineer to make up required wall length or

for bonding. Sample bricks shall be submitted to the Engineer for approval and

bricks supplied shall conform to approved samples. If demanded by Engineer,

brick sample shall be got tested as per IS : 3495 by Contractor at no extra cost to

Client. Bricks rejected by Engineer shall be removed from the site of works

within 24 hours.

D.7.3.3.1 Mortar for brick masonry shall be prepared as per IS : 2250 Mix for cement

mortar shall be specified in the respective items of work. Gauge boxes for sand

shall be of such dimensions that one completed bag of cement containing 50 kg of

cement forms one unit. The sand shall be free from clay, shale, loam, alkali and

organic matter shall be of sound, hard, clean and durable particles. Sand shall be

approved by Engineer, sand shall be thoroughly washed till it is free of any

D.7.3.3.2 For preparing cement mortar, the ingredients shall first be mixed thoroughly in

dry condition. Water shall then be added and mixing continued to give a uniform

mix of required consistency. Cement mortar shall preferably by machine mixed,

though hard mixing in a thorough manner may be allowed. The mortar so mixed

shall be used within 25 minutes of mixing. Mortar left unused in the specified

period shall be rejected.

D.7.3.3.3 The Contractor shall arrange for test on mortar samples if so directed by the

Engineer. Re-tempering of mortar shall not be permitted.

D.7.3.4 Workmanship

D.7.3.4.1 All bricks shall be thoroughly soaked in clean water for at least one hour

immediately before being laid. The cement mortar for brick masonry work shall

be as specified in the respective item of work. Brick work 230 mm thick and over

shall be laid English Bond unless otherwise specified. 115 mm thick work shall

be laid with stretchers. For laying bricks a layer of mortar shall be spread over

the full width of suitable length of the lower course. Each brick shall be pressed

into the mortar and shoved into final position so as to embed the brick fully in

mortar. Bricks shall be laid with frogs uppermost.

D.7.3.4.2 All brickwork shall be plumb, square and true to dimensions sown. Vertical

joints in alternate courses shall come directly one over the other and be in line.

Horizontal courses shall be levelled. The thickness of brick course shall be kept

uniform. For walls of thickness greater than 230 mm both faces shall be kept in

vertical planes. All interconnected brickwork shall be carried out at nearly one

level (so that there is uniform distribution of pressure on the supporting structure)

and so portion of the work shall be left more than one course lower than the

adjacent work. Where this is not possible, the work shall be racked back

according to bond (and not saw toothed) at an angle not exceeding 45 degree. But

in no case the level difference between adjoining walls shall exceed 1.25 m.

Workmanship shall conform to IS :

D.7.3.4.3 Bricks shall be so laid that all joints are well filled with mortar. The thickness of

joints shall not be less than 6 mm and not more than 10 mm. The face joints shall

be raked to a minimum depth of 10/15 mm by raking tools daily during the

progress of work when the mortar is still green, so as to provide a proper key for

the plaster or pointing to be done. When plastering or pointing is not required to

be done, the joints shall be uniform in thickness and be struck flush and finished

at the time of laying. The face of brick work shall be cleaned daily and all mortar

droppings removed. The surface of each course shall be thoroughly cleaned of all

dirt before another course is laid on top. If the mortar in the lower course has

begun to set, the joints shall be raked out to a depth of 12 mm before another

course is laid.

D.7.3.4.4 All brick work shall be built tightly against columns, floor slabs or other structural

D.7.3.4.5 Where drawings indicate that structural steel columns are to be fireproofed with

brickwork, the brick shall be built closely against all flanges and webs with all

spaces between the steel and brickwork filled with mortar. Steel members partly

embedded in brickwork and not indicated to be fireproofed with concrete, shall be

covered with nor less than 12 mm thick mortar unless directed otherwise by

D.7.3.5 Miscellaneous inserts in masonry e.g. sleeves, wall ties, anchors, conducts,

structural steel, steel inlets etc. shall be installed by the Contractor at no extra cost

to the Owner. Furnishing of any of these inserts by the Contractor, will be paid

for separately. Openings, arches etc. shall be provided as shown on the drawings.

Chases, pockets etc. shall be provided as shown on the drawings to receive

windows, louvers, doors frames etc. Wall ties and flashings shall be built into the

brickwork in accordance with the drawings and specifications. It shall be clearly

understood that the rates quoted by the Contractor include for fixing of inserts,

leaving openings, cutting chases in brickwork for various trades etc.

D.7.3.6 Facing Brickwork

D.7.3.6.1 Facing bricks of the type specified shall be laid in the positions indicated on the

drawings and all facing brickwork shall be well bonded to the backing bricks. No

facing brickwork shall at any time be more than 600 mm above the backing

D.7.3.6.2 All facing brickwork shall be pointed as the work proceeds and internal faces of

the brickwork shall be pointed with neat flush joint to give a fair face.

D.7.3.6.3 Faced work shall be kept clean and free from damage, discoloration etc. at all

times. The Contractor shall fill carefully all holes with bricks similar to the

surrounding brickwork, point brickwork as required.

D.7.3.6.4 For facing brickwork, double scaffolding shall be used no holes in brickwork for

scaffolding shall be permitted.

D.7.3.7 The green work shall be protected from rain by suitable covering bricks shall be

kept constantly moist on all faces for a minimum period of ten days. Brickwork

shall not be raised more than one metre per day.

D.7.3.8 The rates quoted by the Contractor are exclusive or transoms and mullions.

Contractor shall provided the same as shown or indicated on the drawings. These

shall be generally provided only in half and full brick walls. Dimensions of the

transoms and mullions shall conform to the thickness of the wall. Concrete work

for transoms and mullions shall conform to the specifications for concrete and

shall be of grade M200.

D.7.3.9 Where shown on the structural drawings, bricks for partitions walls shall be

stacked adjacent to the structural member to pre deflect the structural member

before the wall is built.

D.7.3.10 Measurement

D.7.3.10.1 Brick work of thickness one brick i.e. 230 mm and above shall, unless otherwise

stated in the Schedule of Quantities, be paid in units of cu.m. or part thereof.

Brickwork of thickness less one brick i.e. less than 230 mm thick shall be

measured and paid on the basis of rates quoted per sq.m. of part thereof in all

cases, the quantities measured and paid for shall be those actually executed after

making necessary deductions for openings etc. Brick masonry for steps and such

other mass works and encasement shall be paid on the basis of rates quoted per

cu.m. or part thereof.

D.7.4 CONCRETE BLOCK MASONRY

D.7.4.1 Concrete blocks (hollow or solid) shall generally conform to IS : 2185. Blocks

shall be regular size and shape and shall be of specified strength. Blocks shall be

properly cured before they are brought to site. Half of three quarter size blocks

are to be used wherever required to make up length of wall and broken blocks

shall not be used. The texture of the blocks shall be such that plaster will adhere

to it. The Contractors shall supply samples for approval. Blocks supplied shall

conform to approved samples.

Mortar shall be similar to mortar in brickwork as given Clause D.7.3.3 herein

D.7.4.3 All block work shall be plumb, square and properly bonded. The joints shall be

broken. The thickness of the courses shall be uniform with courses horizontal.

All connected work shall be carried out at nearly one level and no portion of the

work shall be left more than one course lower than the adjacent work.

D.7.4.4 Blocks shall be so laid that all joints are well filled with mortar. The thickness of

joints shall not be less than 6 mm and nor more than 8 mm. The face joints shall

be raked to a minimum depth of 10 mm by raking tools daily during the progress

of work when the mortar is still green, so as to provided a proper key for the

plaster or pointing. When plastering or pointing is not required, the joints shall be

struck flush. For pointed masonry or for masonry without plaster, smooth

textured concrete shall be use. The face of block work shall be kept clean at all

D.7.4.5 Where blocks are to be used for load bearing walls, the uppermost layer of blocks

supporting slab or other structural members, shall be solid of treated as directed

by the Engineer.

D.7.4.6 Precast concrete screen blocks or ‘jali’ work may be used for decorative purpose.

The Contractor shall furnish samples for approval.

D.7.4.7 Measurement

D.7.4.7.1 Block work of specified thickness shall be paid in units of sq.m. or parts thereof.

If reinforcing bars are specified in horizontal courses, it shall measured and paid

for separately at quoted rate for reinforcement. In all cases, the quantities

measured and paid for, shall be those actually executed after making necessary

deductions for openings etc.

D.7.4.7.2 Miscellaneous inserts e.g sleeves, ties, anchors, conduits etc. in block masonry

shall be installed by Contractor, at no extra cost to Owner. Furnishing of any of

these inserts by Contractor will be paid for separately.

D.7.5 RANDOM RUBBLE MASONRY, UNCOURSED IN FOUNDATION, PLINTH

AND SUPERSTRUCTURE

D.7.5.1 Stones for this work shall be hard, durable rock, close or fine grained and uniform

in colour, free from veing, flaws and other defects and shall conform to IS :

(Part-I). The stones shall be laid in mortar proportions specified for the particular

item of work. Stones shall be got approved, if desired by Engineer.

D.7.5.2 For all work below ground level the masonry shall be random rubble uncoursed

with ordinary quarry dressed stones for hearting and faced with selected quarry

dressed stones.

D.7.5.3 For all work above ground level and in superstructure the masonry shall random

rubble, well bonded, faced with hammer dressed stones with squared quoins at

joints and corners.

D.7.5.4 No stones shall tail into the wall, either with a point or to length less than

times its height. The thickness of the joint shall not exceed 12 mm.

D.7.5.5 Spawls and pinnings shall not be allowed to show on the face of the wall. Two

bond stones each of minimum area of 500 sq.cm. for every 1.0 sq.m. of each wall

face shall be provided. These shall be through stones in walls 600 mm thick and

under. In walls thicker than 600 mm, the length of bond stones shall be 2/3 times

the thickness of walls. The stones for hearting of the wall shall not be less than

150 mm in any direction. Chips and Spawls shall be wedged in to avoid thick

mortar beds and joints. The quoins shall be of selected stones neatly dressed with

chisel to form the required angles and laid harder and stretcher alternately.

D.7.5.6 The exposed face of the work shall be carefully and neatly pointed with mortar in

all joints. On the other sides, the joints shall be neatly struck with trowel while

the mortar is fresh.

The mortar for the work shall be as specified in the respective items of work and

shall be prepared as per Clause D.7.3.3.

D.7.5.8 Curing of masonry shall continue for a minimum of ten days.

D.7.5.9 Measurement

The unit of measurement shall be cu.m. or part thereof. Actual quantity of

masonry shall be calculated from dimensions shown on the drawings less opening

and shall be paid for.

D.7.6 COURSED RUBBLE MASONRY (FIRST SORT) FOR SUPERSTRUCTURE

D.7.6.1 The stones used shall be hard, durable, rock free from veins, flaws and other

defects and shall conform to IS : 1597 (part-I). Height of each course in the

masonry shall not be less than 150 mm. The stones n each course shall be or

equal height. All courses shall be f the same height unless otherwise specified.

All stones shall be set in full cement mortar of proportion specified for the

respective items of works. Stones shall be got approved, if desired by Engineer.

D.7.6.2 The free stones shall be squared on all joints and beds. The beds being hammer

or chisel dressed true and square for at least 75 mm from the face and the joints