Construction of rigid pavement flooring at plot no. 395-1 of solid waste dumping at GIDC, Por-Ramangamdi industrial estate

Name of work : Construction of rigid pavement flooring at plot no. 395-1 of solid waste

dumping at GIDC, Por-ramangamdi industrial estate.

VOLUME -I: TECHNICAL AND PRICE BID

ONLINE TENDER PAPERS

1 Estimated cost : Rs.

2 Tender fee Basic + 18 % GST : Rs.1,770.00

4 Last date on (or before) which the tender along- : From 29th January 2026 to 05th February

with DD / FDR for Tender fees& EMD (by 2026 up to 18.00 hours

scanning) and other required documents must

upload on the web site of www.nprocure.com &

www.statetenders.gujarat.gov.in

5 Date on (or before) which DD/FDR in original : From 6th February 2026 to 07th February

for Tender fee& EMD and other required 2026 up to 18.00 hours during working days

documents must reach by RPAD/Speed only.

Post/Hand to Hand Delivery in the office of the

Chief Officer Notified Area Authority, Plot No.

136, Near Water tank G.I.D.C. Estate, Por-

Ramangamdi.391243 Phone No. (0265)

6 Pre-Bid Meeting : NA

7 Eligible class of Registered : “E-1 class & above”

OFFICE OF THE CHIEF OFFICER, NOTIFIED AREA, GIDC, POR RAMANGAMDI

Plot No.136, Nr. Water Tank, GIDC ,Por Ramangamdi.Pin -391243

E-Mail:- [email protected]

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Name of work : Construction of rigid pavement flooring at plot.no.395-1of solid waste

dumping at GIDC,Por-ramangamdi industrial estate.

SR.NO. PARTICULAR PAGE NO.

02 TENDER NOTICE 3–6

03 MEMORANDUM OF WORK IN BRIEF 7–9

04 INSTRUCTIONS FOR ONLINE TENDER TO 10 –

05 PRE-QUALIFICATION CRITERIA 12 –

06 INFORMATION & INSTRUCTION TO BIDDER 23 –

07 SPECIAL CONDITION 28 –

08 GENERAL CONDITION 30 –

09 SPECIFICATION OF MATERIALS 33–

10 ITEMWISE DETAILSPECIFICATION 111 –

11 SCHEDULE B 135 –

12 B1 AGREEMENT (Page 1 to 48) Attached Seperately

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(NOT FOR PUBLICATION)

Por-Ramangamdi Notified Area Authority

Office of the Chief Officer

Por-Ramangamdi Industrial Estate

E-TENDER NOTICE NO. 11 OF 2025-26

E-tender for the following works of Notified Area waghodia are publically invited from the intending bidders

registered in appropriate class with state Govt. of Gujarat R&BD / W.R.D / GIDC and other State Governments

equivalent, by the Chief officer Por-Ramangamdi Notified Area Authority, Por-Ramangamdi Industrial

Estate, by E-tendering on web site https://www.nprocure.com, www.statetenders.com

The tenders under are invited percentage (%) above / below - B1 Agreement . The bids will be opened on

schedule date and thereafter on evaluation thereof, the price bid of the pre-qualified bidders, will only opened.

GENERAL DETAILS OF WORKS:

(1) Estimated cost

(2) Earnest Money

Sr. Name of work (3) Non-refundable Class of registration

(Inclusive of 18%

Construction of rigid pavement flooring at (1)Rs. 35,38,917.38 E-1" class and above

1 plot.no.395-1of solid waste dumping at (2) Rs.

GIDC,Por-ramangamdi industrial estate.

(A) SCHEDULE OF E-TENDERING

(i) Downloading of Tender Documents from Web site of From 29th January 2026 to 05th

www.nprocure.com. February 2026 up to 18.00 hours

(The tender document for these work are available only

in Electronic format which Bidder can download at free

SUBMISSION OF TENDER From 29th January 2026 to 05th

(ii) (A) Online submission February 2026 up to 18.00 hours

I) Online submission of bid documents.

II) Scanned copies of DD for tender fee & EMD in

electronic format only through online

a) Other Documents required to be submitted by From 06th February 2026 to 07th

scanning in electronic format only through online February 2026 up to 18.00 hours

1) Required Class of registration during working days only.

2) Valid Bank Solvency and also as per para

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(B) Submission in physical form From 06th February 2026 to 07th

I) D.D. / FDR in original ( for Tender fee & EMD) February 2026 up to 18.00 hours

Other documents mentioned in para C, Sr. No. 5 for during working days only.

the purpose of verification only (in physical form) by

personally i.e. by Speed Post / Currier / Hand

delivery. ( Kindly refer C-1,2 &3)

(iii) Opening of Technical Bid documents. In the Office of Chief Officer

waghodia Notified Area Authority

as under: - Preferably

On dtd. 10th February 2026 at

(B) DETAILS TO BE FURNISHED ALONG WITH APPLICATION:

Interested Bidders can view these tender documents on line, but bidders who are interested in

bidding these tenders can download tender documents from web site as mentioned above and

bidder who wish to submit their offer shall pay non-refundable tender fee in the form of

Account payee Demand Draft payable at Waghodia drawn on any Nationalized / Scheduled

bank in favour of Chief Officer, Notified Area POr-Ramangamdi & EMD in the form of

Account Payee Demand Draft payable at Por-Ramangamdi drawn on any Scheduled /

Nationalized Bank in favour of Chief Officer, Notified Area Por-Ramangamdi.

The intending bidders have to submit the following documents also, along with the tender fee &

EMD (in physical form) by personally i.e., by speed post/currier/hand delivery.

1. Registration certificate of Approved contractor in respective category for the work.

2. Fresh Bank Solvency Certificate (2025-26) (20% value of Estimated cost put to tender)

3. Latest Income Tax Return filed & Pan card details.

4. GST Registration & RPFC Registration certificate.

5. For the purpose of verification, the original documents submitted in electronic format should be

submitted in physical form for the works in the manner set out below by personally i.e. by hand

delivery during office hours.

a) Original tender fee in form of DD and EMD in form of DD/ FDR.

Notified Area Por-Ramangamdi Plot No.136, GIDC Estate,

Near Water Tank, por ramangamdi-391243 ( Ph. 02635-2830145)

Any documents in supporting of tender bid shall be submitted in electronic format only through

online (by Scanning etc.) and hard copy will not be accepted separately.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

1. Intending bidders or their representative who wish to remain present at the time of tender

opening can do so.

2. Tenderer shall submit their offer in electronic format online only, after digitally signing the

3. Offers which are not digitally signed will not be accepted.

4. No Offer in physical form except specified documents will be accepted.

5. Conditional tender shall not be accepted.

6. Scanned copied of DD for tender fee & EMD shall submit in electronic format through online

(by Scanning) while uploading bid.

7. Rules of GIDC as well as committee of Board of Management Notified Area, POr-Ramangamdi

are binding to the tenderer.

8. Tenders without tender fee, Earnest Money Deposit (EMD) and other required documents

specified above which do not fulfill all or any of the condition or submitted incomplete in any

respect will be rejected.

9. The internet site address for e-tendering is http://www.nprocure.com and that corporate web site

is www.nprocure.com. If any clarification / query regarding these tenders is required, do not

hesitate to contact our concern Executive engineers through mobile. Shri D.A.Patel - Chief

Officer, NA Por-Ramangamdi - Mo. 0265-2830145

10. Rates quoted by the agency is excluding of GST will be paid separately

11. Chief Officer, Notified Area, Por-Ramangamdi reserves the rights to reject any or all tenders

without assigning any reason thereof.

Notified Area Por-Ramangamdi

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

માટહતી ખાતાની www.statetenders.comમાાં અને િે ન્ડર

www.nproucre.com ઉપર તા : ૦૫/૦૨/૨૦૨૬ ના ૧૮:૦૦ કલાક સુધી જોવા

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

MEMORANDUM OF WORK IN BRIEF

Name of work: Construction of rigid pavement flooring at plot.no.395-1of solid waste

dumping at GIDC,Por-ramangamdi industrial estate.

VOLUME -I: TECHNICAL AND PRICE.

1) Name of work Construction of rigid pavement flooring at

plot.no.395-1of solid waste dumping at GIDC,Por-

ramangamdi industrial estate.

2) Estimated cost Rs.

3) Joint Venture (J.V) ➢ Joint Venture (J.V) is not allowed.

4) Earnest Money Deposit ➢ Rs. 35,390.00 in the form of DD/FDR for more than

(EMD) 180 days of Nationalized Bank/ Scheduled bank or

. ICICI / HDFC/ IDBI & Axis bank Only. In favor of

" Chief Officer, Notified Area Por-ramangamdi”

5) Validity period of tender offer. 120 days from the stipulated date of receiving of the tender

but no modification shall be allowed after handing over

tender to postal authorities.

6) Security Deposit &

Performance Bond (10%)

(i) In the form of Small Saving Rs. 88,473.00 (2.50%) – Submitted before enter in to

Scheme or Security of Agreement

SardarSarovar Nigam of

minimum 18 (Eighteen) months

(ii) To be deducted from Rs. 88,473.00 (2.50%)

Current R.A. bills.

(iii) Performance Bond of Rs. 1,76,946.00 (5%) – Submitted before enter in to

Nationalized Bank / scheduled Agreement

bank only as B.G. or N.S.C. /

F.D. / S.S.N.N.L. in favour to "

Chief Officer, Notified Area

Waghodia” for validity period of

18 (Eighteen) months which

effect from date of Work order

7) Liquidated Damages As per clause No. 2 of B-1 Form attached herewith.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

8) Defect liability period – Refer The defect liability period shall be One Year from the

modified clause-17A for certified date of completion of work or three monsoon

building work as per R&B whichever is later.

Circlular No. PRCH/102008 /

9) Free Maintenance guarantee 1 (One) Year--Free Maintenance Guarantee with effect

period under clause no.17B of from the certified date of completion.

10) Workers Welfare Cess Under 1% of the value of work done shall be deducted from

the Building & Other the all bills payable to the contractor.

Construction Workers Cess

Act 1996 (Labour Cess)

11) Time limit for completion of 06 (Six) Months

work from the date of written

order to commence.

12) Testing Charges GIDC will deduct 1% of the Estimated Cost from each

Running Account Bill against the testing charges of

13) Submission date & time of

tender documents

i) a) Date on (or before) which From 29th January 2026 to 05th February 2026 up to

the tender with DD / FDR 18.00 hours

for Tender fee & EMD (by

scanning) except required

documents must upload on

the web site of

www.nprocure.com,

www.statetenders.gujarat.gov.in

b) Date on (or before) which From 06th February 2026 to 07th February 2026 up to

DD/FDR in original for 18.00 hours during working days only R.P.A.D or Speed

Tender fee & EMD and Post or Hand Delivery

required documents must reach Physical submission of documents prior to this date will not

in the office of the Office of

the Chief Officer, Notified be considered and bids of the agency will be considered as

Area of GIDC, Plot No. 136, nonresponsive.

Near Water tank, G.I.D.C.

Estate, Por-ramangamdi

(Hand Delivery)

ii) Mode of sending the tender

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

a) The tender with DD / FDR By Online through e – tendering process

for Tender fee & EMD (by

scanning) except required

b) DD/FDR in original for Personally i.e., Hand Delivery to In Office of the Chief

Tender fee & EMD and Officer, Notified Area of GIDC, Plot No. 136, Near

required documents Water tank, G.I.D.C. Estate, Por-ramangamdi

14) Opening of Technical bid Preferably On dtd. 10th February 2026 at 12.00 noon

15) Tender to be opened by In the Office of the Chief Officer, Notified Area of

GIDC, Plot No. 136, Near Water tank, G.I.D.C. Estate,

Por-Ramangamdi-391243.

16) Description essential to be (1) Name of work: Construction of Compound wall

made on sealed cover for around the plot no.136 in por- ramangamdi

documents to be submitted by Industrial Estate under por-ramangamdi notified

personally i.e., Hand area.

(2) Date of receiving the documents

From 06th February 2026 to 07th February 2026 up

17) Important Note: ❖ For any technical discrepancy, the latest version of

MORT&H / IRC shall be applicable.

❖ Prospective bidders are requested to join the site visit.

❖ NAO reserves the right, without any obligation or liability,

to accept or reject any or all the bid at any stage of the

process, to cancel or modify the process or any part thereof

or to vary any of the terms and conditions at any time,

without assigning any reason whatsoever.

❖ Registration required “E1 Class and Above”

❖ GST registration certificate required mandatory

❖ Required Documents mentioned in as under (a), (b), (c)&

(d) are mandatory for submitting scanned copies through

ONLINE. Otherwise, tender offer shall be treated as NON-

RESPONSIVE, without any further intimation.

a) Scanned copy of tender fee and EMD

b) Required Class of registration, Latest Income Tax return

filed, RPFC registration certificate with latest challan,

Service Tax Registration & Pan Card.

c) Fresh Valid Bank Solvency- (20% value of the estimated

cost put to tender)

d) GST registration certificate

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

❖ Submit the required documents online duly named and

page numbered in proper manner for simplicity.

❖ Agencies based in the Vadodara district will be given

first preference during the evaluation process, subject

to meeting all eligibility and qualification criteria.

The agency shall mandatorily possess and operate its own

functional Ready Mix Plant located within a radius of 20 to

km from the project site, along with all necessary equipment

required for the execution of Rigid road works.

1) Site Visit Contact Person:

1. Smt D.A.Patel

Notified Area, Por ramangamdi.

2. Shree C H pathak

AE,NA GIDC,Por ramangamdi

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

INSTRUCTIONS FOR ONLINE TENDER TO BIDDER

1. Down loading of Tender Document :

1.1) Tender documents for downloading will be available on Web site of www.nprocure.com.

1.2) Bidders wishes to participate in this tender will have to register on web site of

www.nprocure.com.

2. Digital Certificate :

2.1) Bidders who wish to participate in online tenders will have to procure / should have

legally valid Digital Certificate (Class III) as per Information Technology Act - 2000 using

which they can sign their electronic bids. Bidders can procure the same from any of the

license certifying Authority of India or can be contact (n) Code Solution, G.N.F.C. Ltd.,

who are licensed Certifying Authority by the Government of India.

2.2) All bids should be digitally signed, for details regarding Digital signature certificate &

related training involved the below mentioned address should be contacted :

(n) Code Solutions

A Division of G.N.F.C.

301, G.N.F.C. Infotower, Boadkdev, Ahmedabad- 380054 (India)

Note:- Representation of prospective bidders on Delay / Non-submission of ONLINE Offer in

time on account of technical fault or any on the part of service provider – website:

www.nprocure.com shall not be considered.

2.3) Bidders who already have a valid Digital certificate need not procure a new Digital

3. Online Submission of tender with DD / FDR for Tender fee & EMD (by scanning) :

3.1) Bidders can prepare and edit their offers numbers of time before tender submission date &

time. After tender submission date & time, tenderer cannot edit their submitted offer in any

case. No written or online request in this regard shall be granted.

3.2) Tenderer shall submit their offer in Electronic format on above-mentioned web site on or

before submission date & time of online tender shown above after digitally signing the same.

3.3) Scanned copies of DD for tender fee & EMD shall be submit in electronic format through

online (By scanning) while uploading the bid. This submission shall mean that tender fee &

EMD are received.

3.4) Offers submitted without digitally signed will not be accepted.

3.5) Offers in physical form will not be accepted in any case.

3.6) The Bidder shall have to submit unconditional offer without differing from any of the tender

3.7) The BID and all communications in relation to or concerning the Bidding Documents and

the BID shall be in English language.

3.8) Offers submitted without tender fee, EMD & other required documents will not be accepted.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

4. Submission of Tender fee, EMD, (DD/FDR in original) and other required documents by

Personally i.e. Hand Delivery / Speed post / Currier Service:

4.1) Non refundable tender fee of as per Memorandum shall be paid in the form of Account

Payee Demand Draft payable at Bharuch, drawn on any Nationalized Bank in favour of

Chief Officer, Notified Area Waghodia, DD issued after the last date of submission of

tender will not be considered as valid or accepted in any case.

4.2) Earnest Money Deposit (EMD) as mentioned in the Memorandum of work in brief.

4.3) Other required documents as per PQ document.

4.4) The documents received before or after the time specified in the tender notice shall not be

accepted in any case and the bid of that bidder shall be considered non-responsive. All

documents should be submitted without any conditions.

5. Opening of Tender :

5.1) Opening of bid documents will be held on date & time shown above in the office of the

Chief Officer, Notified Area of GIDC, Plot No. 136, Near Water tank, G.I.D.C. Estate,

5.2) Intending bidders or their representative who wish to remain present at the time of tender

opening can do so.

6. General Instructions :

6.1) Tender documents with all schedules & annexure should be digitally signed by the tenderer.

6.2) Offers which are not digitally signed will not be accepted

6.3) No offer in physical form except specified documents will be accepted.

6.4) The tender fee will not be refunded under any circumstances.

6.5) EMD in the form specified in tender document shall only be accepted.

6.6) Tenders without tender fee, Earnest Money Deposit (EMD) and other required documents

specified in tender documents which do not fulfill all or any of the condition or submitted

incomplete in any respect will be rejected.

6.7) Conditional tender shall not be accepted.

6.8) The Internet site address for e-tendering is http:// gidc.nprocure.com. and that corporate web

site is www.nprocure.com.

6.9) GIDC reserves the rights to reject any or all tenders without assigning any reason thereof.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

VOLUME -I: TECHNICAL AND PRICE.

QUALIFICATION CRITERIA FOR PRE - QUALIFICATION

Name of work: Construction of rigid pavement flooring at plot no. 395-1of solid waste

dumping at GIDC,Por-ramangamdi industrial estate.

The pre-qualification application received under this bid shall be assessed and evaluated based on the

qualification criteria and evaluation procedure prescribed hereunder:

(1) Following constitution of Pre-Qualification evaluation committees is inalized.

Sr. Constitution of Committee

1 The pre‐qualification application received under this bid shall be assessed and evaluated based

on the qualification criteria and evaluation procedure prescribed here under. An evaluation of

Pre‐Qualification Application will be placed constitution of Pre-Qualification evaluation

committees is Board of Management of Notified Area GIDC Por-Ramangamdi.

(2) Prequalification criteria for the Civil / Mechanical / Electrical works.

(2.1) Eligibility: E-1 Class & Above

(2.1.1) Bidder’s registration: -

(2.1.1.1) Only those bidders shall bid whose names are borne on the approval list of registered

contractors in the required class & category with Gujarat state R&BD / W.R.D. / GIDC.

(2.1.1.2) If the Contractor’s registration in the required class & category with Gujarat state R&BD

/ W.R.D. / GIDC is expired on or before the last date of online bidding period of the

tender, the bidder must submit through online in electronic form the application for

renewal of the same with the concerned department along with receipt of fees paid for it.

In such cases, the bidder at his own responsibility must produce valid renewed

registration certificate in the required class & category with Gujarat state R&BD /

W.R.D. / GIDC before the date of opening of Technical Bid. Failing to which the bidder

shall be disqualified for opening of his price bid. Bidder will solely be responsible for

obtaining the required registration.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(2.1.1.3) In context to above Para (2.1.1.2), it is clarified that the bidder who is having registration

in class & category below than the minimum required class & category and the bidder

has applied for up-gradation in required class and category with Gujarat state R&BD /

W.R.D. / GIDC shall not be considered valid. In such cases the bidder shall not be

considered eligible for bidding.

(2.1.1.4) The bidder, who is registered in appropriate category of C.P.W.D., M.E.S., Railways and

Indian state government, can also bid provided the bidder produce such registration

certificate at the time of bidding and obtain registration in required class & category

from the Gujarat state R&BD / W.R.D. / GIDC before issuing work order. Bidder will

solely be responsible for obtaining the required registration.

Note: - Joint Venture (JV) is not allowed.

(2.2) Successful experience:

(2.2.1) Bidder must have experience of successfully completed similar works during last seven years

ending last day of month previous to one in which applications are invited.

For arriving at update value, final amount of the work, completed in any one financial year

shall be multiplied by the enhancement factor corresponding to that financial year. Following

enhancement factors will be applied to final amount of work, completed in any one financial

year and to bring them to the base year. The current financial year in which bid is invited shall

be considered as the base year.

Year Financial year Enhancement

Base 2025 to 2026

(Year of inviting tender)

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(2.2.2) A work would qualify as similar work only if it meets with definitions given in below

Definition of Similar work :‐

The bidder must have completed at least one PQC work having updated completion cost not less than Rs.

(2.3) Litigation history: -

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

resulting from contracts completed or under execution by him over the last five

financial years. A consistent history of arbitration awards/judgements against the

applicant or any partner of a joint venture may result in disqualification for proposed

work. If the details of litigation history is hidden by the applicant and later on it

comes to knowledge of the employer the bidder shall be disqualified for the proposed

work and other appropriate action shall be taken against the bidder.

(2.3.2) Information of litigation history in following statement to be submitted, if any other

wise Nil / Not Applicable statement to be submitted.

LITIGATION HISTORY

Name of applicant:

Sr. Name Work Financi Brief Departme Whether Details of Whether

No. of completed al year Detail of nt in awards / Result of Judgemen

Contra or under the opposition judgement arbitration t in favour

ct execution arbitration s is / or in

/ litigation pending Judgemen against

matter or made? t

(Signature of bidder)

(2.4) Affidavit regarding Termination / Blacklisting / Ban / Registration kept in Abeyance. :-

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

2.4.1 The bidders shall be disqualified for opening of his price bid if he is under blacklist and / or

under ban and /or his registration is under abeyance by any Central / State Government

Department, Board, Corporation, Municipal Corporation, Municipality, Government Local

Bodies, University etc.

2.4.2 The bidder shall have to submit prescribed notarized affidavit on appropriate stamp paper

as under, failing to which the bidder shall be disqualified for opening of his price bid.

Affidavit regarding Termination / Blacklisting / Ban / Registration kept in Abeyance.

(To be submitted on stamp paper of appropriate value & duly notarized.)

Name of work: -

______________ in the capacity of _________________Do hereby solemnly affirm and declare as

We are not under blacklist and / or under ban and /or our registration has not been

kept under abeyance by any Central / State Government Department, Board, Corporation,

Municipal Corporation, Municipality, Government Local Bodies, University etc. as on date of

participating for this bid.

Date: - Authorised signatory

(2.5) Machinery / Equipment: -

Bidder shall have to submit a prescribed notarized undertaking on appropriate stamp paper

for deploying machinery/equipment for the work under tender as per below.

Undertaking for deploying Machineries/Equipments/Tools & Plants

(To be submitted on stamp paper of appropriate value & duly notarized.)

(Authority holding the digital key)

Name of Work: - Construction of Compound wall around the plot no.136 in por -

ramangamdi Industrial Estate under por-ramangamdi notified area.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

List of minimum Machineries/ Equipments/ Tools & Plants to be deployed on contract work.

Sr. Type of Equipment Minimum No. of equipment

1 Ready mix Concrete

3 Needle Vibrator

4 Concrete Pump

I/We hereby undertake that if I/we awarded the above said work then i/we shall deploy all

Machineries/Equipments/Tools & Plants etc. as shown in the Appendix-B in fully working condition and

utilize the same while execution of the work.

We also undertake that i/we shall deploy other Machineries/Equipments/Tools & Plants etc. over & above

shown in Appendix-B in working condition and utilize the same as per instruction of Engineer-In-Charge.

Failing to above we shall not object any action taken to us within the tender provision. In case of any

dispute, Superintendent Engineer’s decision shall be final.

Date :- Authorised signatory

(2.6) SITE VISIT CERTIFICATE. :-

Before quoted the rate, it is mandatory to carry out a survey of the functioning area of the Notified,

Waghodia and after the survey, it is mandatory to attach a certificate of Site Visit which is provided

by the Notifed after the visit and survey of the area.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

SITE VISIT CERTIFICATE

Hence, the certificate is given. Today, on......../......../2026, With the

President / Vice President Chief officer,

Por-Ramangamdi Industries Association Por-Ramangamdi NOTIFIED AREA

Note: The agency will have to get the signature of the Chief Officer and submit the same

(2.7) bidding in E-tendering: -

Submission of documents must be through e-tendering i.e., electronic form, unless specified in

All of the online submitted documents must be clearly readable, failing to which the same shall be

considered as void.

Bids of those bidders who have submitted all information, statistical details as required in the bid

documents through E-Tendering will only be considered. If the employer desires any clarification,

for verification/clarification, ambiguity of difference found in the documents/statistical details

submitted online (by e-tendering) by the bidder the same shall be furnished within stipulated time

otherwise further processing will be carried out in absence of above and the bidders shall be liable

for any consequence.

No bidder can participate in more than one bid for proposed work. GIDC,

(2.8) The agency shall mandatorily own and operate a functional RMC plant located within a

radius of 20 to 30 km from the project site, along with all necessary equipment required for

the execution of Rigid road works.

Please attach assurance of plant as per condition in Sr. no. 2.8 on letterhead with co-ordinates.

(2.9) Submission of documents: -

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(2.9.1) Following documents/papers shall form part of the bid & must be submitted through online

in electronic form unless specified separately, failing to which the bidder shall be dis-

qualified for opening of his price bid.

(2.9.1.1) D.D. of require tender fee. (To be submitted in electronic form at the time of online submission of

the bid & the same to be submitted in original during prescribed time period for submission of

documents in physical form.)

(2.9.1.2) DD/FDR & BG of required EMD. (To be submitted in electronic form at the time of online

submission of the bid & the same to be submitted in original during prescribed time period for

submission of documents in physical form.)

(2.9.1.3) Copy of valid bank solvency certificate of minimum 20 % amount of the estimated cost put to the

tender of the work. (Bank Solvency certificate issued during current calendar year is considered as

valid up to end of the December of the current calendar year. 31st march of the next calendar

year. In case, where solvency certificate is not obtained in time, the certificate of previous year

will be considered valid up to the end of March of current calendar year. In some certificates date

of validity is stated. In such cases the same stated date is considered for validation instead of end

of December of the current calendar year.)

(2.9.1.4) Copy of relevant required Registration Certificate / Certificates. (In case of renewal, copy of

application & receipt of fee paid.)

(2.9.1.5) Litigation history as per Para (2.3).

(2.9.1.6) Affidavit regarding Termination / Blacklisting / Ban / Registration kept in Abeyance as per Para

(2.9.1.7) Copy of form-3A / Experience certificate issued by employer (Government / Semi Government)

showing all details as required as per Pre-Qualification criteria of successful experience of similar

work and copy of letter of permission given by employer (Government / Semi Government) for

subletting the work, if case may be of.

(2.9.1.8) When employer is not a government, following need also to be furnished.

(2.9.1.8.1) Copy of work order.

(2.9.1.8.2) Copy of agreement.

(2.9.1.8.3) Copy of Form-3A / Experience certificate showing all relevant details issued by employer & certified

by Charted Accountant.

(2.9.1.8.4) Copy of final bill.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(2.9.1.8.5) Copy of TDS certificates.

(2.9.1.8.6) Copy of letter of permission given by employer for subletting the work.

(2.9.1.9) The undertaking for deploying machinery/equipment for the work under tender as per Para (2.5).

(2.9.1.10) SITE VISIT CERTIFICATE for the work under tender as per Para (2.6).

(2.9.2) Following documents/papers shall also form part of the bid, but these documents are not

mandatory to be submitted through online in electronic form. However, the same shall be

submitted in physical form, if not submitted through online in electronic form, within time

period given by authority holding the digital key, failing to which the bidder shall be dis-

qualified for opening of his price bid.

(2.9.2.1) Copy of registration certificate of firm / documents of public limited / private limited /

partnership firm / proprietor firm, whichever is applicable. For example, Partnership Deed,

Certificate of incorporation, Memorandum of association, Article of Association etc.

(2.9.2.2) Copy of Power of Attorney, if any.

(2.9.2.3) Copy of PAN Card.

(2.9.2.4) Copy of latest income tax return certificate. (Note: - latest income tax return certificate means

the income tax return certificate of the last completed financial year for which pre-

determined/extended time period by the Income Tax Department for filing income tax return is

over on or before last date of online submission.

(2.9.2.5) Copy of Goods & Services (G.S.T.) registration certificate.

(2.9.2.6) Copy of RPFC registration certificate.

(2.9.2.7) Copy of RPFC Challan of any of the completed last three months from the month of last date of

online submission of the tender.

Following Undertaking / Declaration to be incorporated on (n) Procure website in such a manner that

without attending this undertaking / declaration the tender cannot be uploaded.

UNDERTAKING / DECLARATRION

“I hereby declare that I have after thoroughly understand the Pre-Qualification criteria /

conditions and the details filed & documents submitted are true and correct to the best of my

knowledge and belief. I shall not have any objection against any action taken by GIDC if any of the

information submitted is found to be incorrect / false.”

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(2.9.3) any information, data, statistics etc. which are not related to bid document will not be considered in

evaluation even through furnished by the applicant.

(2.9.4) In accordance with stipulated of Para (2.8), employer reserves the right to call any

information/documents which is mandatory, essential and critical for the purpose of evaluation. Any

information provided by the applicant after last date of electronic submission will not be considered

in evaluation, unless except the employer has specially asked for any information/document, which is

mandatory, essential and critical for evaluation of PQ document. If required information is not

furnished within stipulated time, proposal will be liable for rejection.

(2.9.5) If any of the information provided by the bidder is found false during scrutiny or at the later stage,

his EMD shall be forfeited and he shall be disqualified for the proposed work. In case when bidder

has furnished exemption certificate in lieu of EMD, an amount equal to EMD shall be appropriated

from his FDR pledged to avail of exemption certificate. If any of the information provided by the

bidder is found false after award of work, the performance security of the bidder shall be forfeited

and the contract shall be terminated.

(2.9.6) accordingly, concerned Pre-Qualification committee shall decide to qualify / dis-qualify the bidder

& circulate / issue minutes of the meeting to concerned for further action.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

SELF EVALUATION (APPENDIX – C)

SELF EVALUATION FORM

Sr. Requirement as per M/s. ……………………………………………………

Component Page No. Remarks

DETAILS FURNISHED BY BIDDER

1 Rs1,770/- by DD D.D. No. and Date

D.D. / F.D.R. No. and Date

2 (B) Rs. by B.G. Name of Bank

(Schedule or B.G. No. and Date

Nationalized Valid up to Date.

Bank Only) Amount in Rs.

20% amount of Name of Bank

Estimated Cost Amount in Rs.

3 i.e. Rs.6.13 Lakh Date of Issue

Valid up to Date.

Registration Name of Department

certificate & “E-1” Class and Valid up to Date.

special category above

Date of Completion

Amount of Work (Rs. Lakh)

Enhancement Factor

Successful Updated Amount (Rs. Lakh)

Name of Department and

Experience of Authority

Similar Work: Private work details

copy of Successful Copy of work order

completion Experience of Copy of agreement

5 work. (Form 3A) Similar Work: As Copy of form 3A

must submit by per Appendix - A Copy of final bill

the bidder. Copy of TDS

(As per Copy of letter of permission

given by employer for

Appendix - A) subletting the work

Date of Completion

Amount of Work (Rs. Lakh)

Enhancement Factor

6 Litigation History (Refer Para 2.3)

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Affidavit regarding Termination / Blacklisting / Rs. 300/-

7 (Refer Para 2.4)

Ban / Registration kept in Abeyance stamp

Machinery/Equipment: Proof of deployment of

9 required minimum machinery / equipment's (Refer Para 2.5)

mentioned in Appendix – B

10 Site Visit Certificate (Refer Para 2.6)

10 Registration certificate / Documents of /public To be furnished whichever is

Limited / Private Limited/ Partnership deed / applicable

Proprietor Firm.

11 Power of Attorney

15 Latest Income tax (A) Year of Income tax Assessment Year

return filed and PAN Return filed

(B) PAN Card No. PAN Card No.

16 Goods and Service GST No. GST No.

Tax (GST) Number Name

(A) R.P.F.C Registration Certificate No.

R.P.F.C Registration

17 certificate & R.P.F.C (B) R.P.F.C Challan of any of the completed last three

Challan months from the month of last date of submission of the

The agency shall mandatorily own and operate a functional RMC plant located

18 within a radius of 20 to 30 km from the project site, along with all necessary

equipment required for the execution of Rigid road works (As per Para no. 2.8)

19 WC Plicy WC Policy No.

20 Truth fullness certificate

21 Other Remarks

Whether Qualified or

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

INFORMATION AND INSTRUCTION FOR BIDDERS

Bids i.e., Price Bid and Technical Bid for the work of Construction of rigid pavement flooring at

plot.no.395-1of solid waste dumping at GIDC,Por-ramangamdi industrial estate.is invited from

Contractors on e-tendering process. The contractors, who wish to bid for this contract, should also apply for

prequalification in the manner set out in this document.

The pricebid will be opened only of those tenderers pre-qualified by the Notified area as having

necessary qualification, suitability to perform the contract satisfactorily and opened Technical Bid

with Prequalification Application will be considered. Technical Bid with Prequalification Application

of dis-qualified bidders will not be considered.

LOCATION OF WORK AND SITE INFORMATION:

The work site is in Notified area, Waghodia of GIDC Por-Ramangamdi.

1. BIDDER'S RESPONSIBILITY

The intending Bidders shall be deemed to have visited the site and familiarized themselves

thoroughly with the site conditions and all other aspects affecting the work under this Contract

before submitting the tender. No claim / extension of time whatsoever shall be entertained on

account of prevailing site conditions.

Interested Bidders may obtain further information at the following address:

1) Chief Officer, Notified Area, Plot No. 136, Near Water tank G.I.D.C. Estate, Por-

2. EARNEST MONEY DEPOSIT (EMD)

EMD is payable in the manner set out in the Form B1.

Demand Draft for E.M.D. shall be submitted in electronic format only through online (by scanning)

while uploading the bid. The submission shall mean that E.M.D. is received for purpose of opening

the bid. Accordingly, offer of those shall be opened whose E.M.D. is received electronically.

However, bidder shall submit the DD in original to Chief Officer, Notified Area, Plot No.

Near Water tank G.I.D.C. Estate, Por-ramangamdi 391243 payable at Por-Ramangamdi As

per the schedule specified in tender notice for submission of document in physical form i.e From

06th February 2026 to 07th February 2026 up to 18.00 hours Only R.P.A.D or Sppeed Post or

Hand Delivery (During office Hour). The submission of document before 06/02/2026 and after

07/02/2026 will not be considered and offer treated as non responsive. Exemption certificate shall

not be acceptable.

Earnest money in specified form @ 1 % of the estimated cost must be sent as mentioned above

preceding electronically. Tenderer may pay earnest money up to Rs. 50,000 in cash or in the form

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

of Crossed Demand Draft or fixed deposit or fixed deposit at-call receipts with a validity period of

not less than 180 days of Nationalized or Scheduled bank or Narmada/Shrinidhi F.D.Rs. drawn in

favour of Chief Officer, Notified Area Waghodia concerned. Earnest money by cheque& Bank

Guarantee shall not be accepted. (vide R & BD G. R. No. TNC/ 1090/(100) (4 )-C, dated 4-11 -

2000). However, in respect of the works estimated to cost above Rs. 50 Lakh, the amount of earnest

money in excess of Rs. 50,000 can be offered by the contractor, at his choice, in the form of Bank

Guarantee of the Scheduled or nationalized Bank only. The Bank Guarantee in such cases will be

furnished in the following form. In such cases also, the amount of earnest money first Rs.

will be paid only in the form of crossed demand drafts or fixed deposit receipts or deposit at call

receipts worth the validity period of not less 180 days of the nationalized or scheduled or Narmada/

If the contractor does not turn up to pay the Security Deposit and execute contract agreement within

specified (or extended) time after intimation to him about acceptance of his offer, the earnest money

paid for this work will be forfeited according to Clause-1 of this tender form tenderer's tender shall

be rejected and then according to aforesaid provision of tender, action to blacklist the Contractor

will be initiated without Delay. (Vide R & B D G.R. No. Misc. - 1097 -90-1091/97 -Z/C dated 04-

10-97 & Parach-102008-5-C-Partfile dated 27-11-08).

Bank Guarantee is permissible only when the estimated cost of work is more than Rs. 50 Lakh.

___________________(hereinafter called the Tenderer) is desirous and preferred to tender for

works in accordance with the terms and conditions of tender for the work of __________ and where

as We, Bank, agree to give the tenderer a guarantee for the Earnest Money.

Therefore, we hereby affirm that we are guarantors on behalf of the Tenderer upto total rupees

figures) and we undertake to pal to Executive Engineer _______________Division____________

Department of Government of Gujarat

________________________________________________upto his first written demand, without

demur, without delay and without the necessity of a previous notice of judicial or administrative

procedures and without the necessity to prove to the Bank the defects or shortcomings or debits of

the contractor any sum within the limit of Rs. ________________________.

We further agree that the Guarantee herein contained, shall remain in full force and effect during

the period that would be taken for the acceptance offender.

However, unless a demand of claim under this guarantee is made on us in writing on or before the

_____________________ (Date to be specified - will not be less than 180 days from the stipulated

date of receiving the tender) we shall be discharged from all liabilities under this guarantee

We undertake not to revoke the guarantee during it currency except with the previous consent of the

Executive Engineer _______ ____________ Division __________________________in writing.

We lastly undertake not to revoke the guarantee for any charge in constitution of the Tenderer or of

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Date Signature & Seal of Guarantor __________________________

The Earnest Money submitted in the form of Deposit-At-call receipt shall need minimum validity of

six months from the last date of online submission of tender. Tender not supported with tender fee,

Earnest Money & documents and not submitted in electronic format (by scanning) while uploading

the bid shall be rejected as NON- Responsive. If the tenderer modifies or withdraws his tender, the

Earnest Money (in case of EMD exemption certificate, proportionate amount equivalent to EMD of

a particular tender) shall be forfeited and the tenderer may be disqualified from tendering for future

works under the Government.

The Earnest Money will be returned to the unsuccessful tenderers. The Earnest Money will be

returned to the successful tenderer after he furnishes security deposit and duly enters into the

Within Ten days or within such time as may be decided by the Tender Inviting Authority from date

of receipt of the Letter accepting his tender, the successful tenderer shall furnish the required

security deposit aand attend the office of the Tender Inviting Authority for execution of the contract

documents. If he fails to furnish the security deposit or execute the contract document, his Earnest

Money (in case of EMD exemption certificate equivalent amount there from) shall be forfeited and

action to blacklist the contractor bill be initiated without delay (Vide R & B.D. G. R. No. Misc.

3. SECURITY DEPOSIT (SD) – 10% of Estimated Cost put to tender.

SD is payable in the manner set out in the Technical Bid with Prequalification Application

by the successful tenderer / Bidder.

Initial Security Deposit in the form of small saving or Rs.

Narmada Bond or FDR – 2.5% of the estimated cost.

(Validity period of 18 Months)

To be deducted from R.A. Bill - 2.5% of the estimated Rs.

Performance Bond of scheduled or Nationalize Bank - Rs. 1,76,946.00 (To be paid

5% of the estimated cost. (Validity period of 18th with initial security deposit)

4. PERFORMANCE BOND – 5% OF THE ESTIMATED COST PUT TO

Performance Bond in the form of Bank guarantee of Nationalized Bank is payable in the manner

set out in the Form B-1 from section-2 clause-1 along with initial security deposited by the

successful bidder

Performance Bond of scheduled or Rs. 1,76,946.00 (To be paid with initial

Nationalize Bank - 5% of the estimated security deposit)

cost. (Validity period of 18th Month’s)

5. PROGRAMME OF WORK:

The program of work for this contract is as under.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Online Submission of Bid

Period for Validity of offer Period of completion

120 days from the stipulated

date of receiving of the

From 29th January 2026 to 06 (Six) Month from

tender but no modification

05th February 2026 up to the date of work

shall be allowed after

18:00 Hrs. order

handing over tender to

postal authorities.

The time is essence of the contract. The contractor shall have to ensure progress of the work

proportionately as per Schedule-C of B-1 agreement.

6. SUPERVISION OF WORK:

The quality assurance and quality control in addition to the Engineer-in-charge of the work.

7. FREE MAINTENANCE GUARANTEE PERIOD:

The scope of works also includes One years free maintenance guarantee period from the certified

date of completion of the works as per clause No.7 of B1 agreement.

During this period, the contractor shall be responsible to make good, working condition and remedy

at his own expenses, any defects, which may develop or may be notice for the work carried out by

him or due to reasons attributed to him.

The Engineer-in-charge shall give the contractor a notice in writing about the defects with remedial

measures and the contractor shall make good the same within period specified in the notice. In case of

failure, on the part of the contractor to carry out / comply the instructions of Engineer-in-charge, the

Engineer-in-charge may rectify or remove and re-execute the work at the risk and cost of the

The Engineer-in-charge shall be entitled to appropriate the whole or any part of the amount of (i)

security deposit (ii) Performance Guarantee Bond in the form of B.G. or N.S.C. / F.D / S.S.N.N.L.,

and (iii) Free maintenance guarantee bond in the form of B.G. or N.S.C. / F.D / S.S.N.N.L towards

the expenses, if any incurred by him / Engineer-in-charge for rectification / removal, and re-execution

The contractor shall immediately recoup the amount so spent such that at any given time the security

deposit, Performance Guarantee Bond or N.S.C. / F.D / S.S.N.N.L. and free maintenance guarantee

bond for maintenance guarantee period shall be maintained as laid down in the Special condition of

If contractor fails to recoup the amount of Security deposit, Performance Guarantee Bond or N.S.C. /

F.D / S.S.N.N.L. and free maintenance guarantee bond for maintenance guarantee period, Engineer-

in-charge shall be entitled to recover the amount spent over the above from the amount of security

deposit, Performance Guarantee Bond or N.S.C. / F.D / S.S.N.N.L. and free maintenance guarantee

bond for maintenance guarantee period.

The Corporation reserves the rights to en-cash the Performance Guarantee Bond & Bank Guarantee

or N.S.C. / F.D / S.S.N.N.L., if required.

8. DEFECT LIABLITY PERIOD:

The defect liability period shall be One years from the certified date of completion of work.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

For details, please refer Clause NO. 17A and Clause NO.7 of Form B-1.

9. PRICE VARIATION CLAUSE & STAR RATE FOR CEMENT, STEEL AND BULK BITUMEN:

Not Applicable & Deleted

10. MOBILIZATION ADVANCE:

Not Applicable.

11. PURCHASE OF BITUMEN BY THE AGENCY:

The contractor shall have to purchase the bitumen in Bulk only from only Govt. recognized refinery

& shall have to produce the original purchase bills along with the original gate passes etc. The

bitumen to be brought on site includes all transportation charges, taxes etc. with all lead and lift.

12. POWER SUPPLY / WATER SUPPLY / OTHER UTILITIES:

The Contractor will make his own arrangement at his cost for power supply / water supply and other

utilities required for the execution of work and arrangements for temporary distribution. All the works

will be done as per IEA regulations. The Contractor shall ensure at his cost that all electrical lines,

water supply lines and equipment & all installations are approved by the state electricity inspector

before power can be supplied by State Electricity Board & GIDC for water/ other utilities.

13. CONDITIONS OF CONTRACT:

Successful bidder shall have to enter in to prevailing agreement B-1 with NAA, all the tender

documents including pre-bid meeting minutes, negotiation letter and acceptance letter will form-An

integral part of the contract. All works will confirm to the Indian Standards, specifications for road &

Bridge works of Ministry of Road Transport and Highway or other equivalent standard mentioned in

the contract document as approved by the Engineer-in-charge.

1) Bids of those bidders who have submitted all information, statistical details as required in the

bid documents through E-tendering will only be considered by Competent Authority of BOM

(Board of management)/NAO, G.I.D.C, Por-Ramangamdi.

2) BOM (Board of management)/NAO, G.I.D.C, Por-ramangamdi reserves the rights to reject or

accept any bid, and cancel the prequalification process and reject all bids.

3) The NAO, G.I.D.C, Por-Ramangamdi shall neither be liable for any such actions nor not be

under any obligation to inform the applicant of the grounds for them. The NAO, G.I.D.C, Por-

Ramangamdi decision shall be final and binding.

4) The bidder should have a registered office located within 20 km of the site

Name of Work: Construction of rigid pavement flooring at plot.no.395-1of solid waste dumping

at GIDC,Por-ramangamdi industrial estate.

SPECIAL CONDITIONS

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

a) The amount of EMD to be paid should be in the form of demand draft or FDR for more

than 180 days of Nationalized / Scheduled Banks and ICICI, IDBI, HDFC & Axis Banks

in favour of Chief Officer, Notified Area Por-Ramangamdi.

b) Units registered with Industries Dept. or with NSIC as a Small-Scale Unit shall have also

to pay prescribed tender fees and earnest money deposit. Exemption certificate issued by

Govt. / any other authority for EMD shall not be valid for Notified works.

c) The amount of earnest money deposit to be paid in the form of DD / FDR in favour of

“Chief Officer, Notified Area Por-ramangamdi” should be attached, along with the

tender only, otherwise it will not be accepted. It may be noted that DD / FDR brought

personally at the time of opening, will not be accepted at all.

d) The earnest money deposit of the unsuccessful contractor(s) shall be returned without

interest within reasonable time after final decision on the tenders and after entering into a

contract with the Corporation by the contractor whose tender is accepted.

2) The contractor shall have to furnish Income Tax Clearance certificate before his tender is

accepted and intimate assessment number and ward under which is accessed.

As Per GIDC Circular No. GIDC: ENG: CIR: CE: 594 dtd. 18th July 2007. &GIDC

Circular No. GIDC: ENG: CIR: CE: 808 dtd. 13.12.2007 and Due to Modification /Changes

in the clauses of B1 agreement of R & B department and to match the R&B department tender

agreement, it is decided to adopt the Performa of B1 agreement of R & B Department for

Notified tender works, except for the following clauses: -

i) Clause: 60 and 60/A Price variation clause (Star Rate)

Not Applicable & ...... Deleted......

ii) Clause No 72: Secured Advance to Contractor ......Deleted......

ii) Clause No 73: Advance Payment ......Deleted......

iii) Clause No. 74: Advance against Machineries ...... Deleted......

iv) Clause No 75: Mobilization Advance ...... Deleted......

v) For EMD: - Exemption certificates for EMD issued against standing security by any other

authority shall not be valid for Notified works.

vi) Copies of certificate as regards previous experience, if any, must accompany the tender.

3) SUPERVISION OF WORK:

NAO-G.I.D.C reserves the right to appoint Third Party Inspectors (TPI) for quality assurance and

quality control in addition to the Engineer-in-charge of the work & Quality Control branch of

G.I.D.C. Head Office.

4) There are also chances that some items may not be required to execute / to execute in very less

quantity than tendered quantity, as per finally approved decisions from NAO-GIDC. In this

situation, the bidder shall not have any right to claim anything extra for such items.

5. The contract shall be governed by the law and order of India for the time being in force and

subject to the jurisdiction of total works at Bharuch district.

6. As applicable Income tax deduction shall be made at source at every running bill.

7. As applicable Sales tax deduction shall be made at source at every running bill

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

8. Security Deposit

❖ 10% of the estimated cost put to tender payable in three stages.

❖ 2.5% of the estimated cost put to tender Submitted Initial SD before enter in to

❖ 2.5% of the estimated cost put to tender through running bills

❖ 5.0% of Performance Bond of Nationalized Bank / scheduled bank only submitted

before enter in to Agreement

9) Labour welfare cess shall be applicable as per the latest circular /G.R.

10) Recovery of royalty charges should be applicable as per latest Government policy.

11) Testing charges of material shall be born by agency. The same shall be deducted from the

running account bills of the contractor for testing the quality of materials and

workmanship. However, the agency must establish at site of work, the fully equipped

laboratory for day-to-day testing like gradation, density, cube tests, slum test etc. for

more details please read Clause No 77 of B1 agreement and strictly follow the same.

12) The agency shall mandatorily own and operate a functional RMC plant located within a

radius of 20 to 30 km from the project site, along with all necessary equipment required

for the execution of Rigid Road works.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Name of work: Construction of rigid pavement flooring at plot.no.395-1of solid waste

dumping at GIDC,Por-ramangamdi industrial estate.

GENERAL CONDITIONS

Contractors may please read be carefully

1. LABOUR CONTRACT ACT:

The contractor tendering for the work shall have to obtain licence under the labour contract

(Regulation and Abolitions) Act, 1970 within a week or award of work comply with all the

provision of Act. As licence. Also, they hall provide all the amenities for the amenity I not

provided by the contractor such amenity shall be provided by the Contractor such amenity

shall be provided by the Chief Officer, as principal employer as his representative within the

prescribed time and the expense incurred by the principal employer providing the evenly

shall be recovered by the amount payable by the Contractor. The Contractor shall act in

accordance with the provisions of the act in all respect and shall absolve the principal

employer from any consequence whatsoever. Every principal Employer shall nominate a

representative duly authorized by him to be present at the time of disbursement of wages and

it shall be the duty of such representative to certify the amount paid as wages in such manner

as may be prescribed, shall nominate representative duly authorized by him to be present at

the time of disbursement of wages and it shall be the duly of such representative to certify

the amount paid as wages in such manner as may be prescribed.

In case the Contractor fails to make payment of wages within the prescribed period or makes

short payment. The principal employer shall be liable to make payment of wages in full or

the unpaid balance due as the case may be the contract labour employed by the contractors

and recover the amount so paid from the contractor by deduction from any amount form the

contractor by deduction from any amount payable to the contractor under contract.

The contractor shall provide every facility to the principal employer to maintain registers

and records giving particulars of contract labour employers. The nature of work performed

by the contact labour the contractor labour rate of wages paid to the contact labour and such

other particulars that are prescribed under the provision of said Act.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The contractor shall be responsible for complying with the provisions of the employee's

provident fund and Miscellaneous Act 1992 scheme and modification of the Act from time

The contractor shall get themselves enrolled with Regional Provident Fund Commissioner or

any competent officer appointed under the Act and shall have to get separate code number in

respect of their respective establishment as decided in section-3 of the Employees Provident

Fund Act and shall discharge all the liabilities arising out of aforesaid Act as provided in

pere-36 A of the scheme and other provisions of the Act.

The Engineer-in-charge on receiving a report from the competent inspecting officer under

the said Act shall have the power to deduct from the payment to the contractor any sum

required or estimated to be required for good the loss suffered by the worker or workers by

reasons of non fulfillment of the conditions of the contractor for the benefit of the workers

under the said Act. The contractor shall indemnify GIDC against any payment to be made

and for the observance of the Regulations aforesaid.

3. GENERAL CONDITION:

Tender shall very carefully read through a take Note of following conditions.

1. The successful tender shall have to enter into an agreement, in prescribed "B1" From.

2. The tenderer shall get himself well acquainted with the job requirement, site conditions,

route and alignment etc.

3. Contractor shall make his own agreement for all the necessary tools, plants equipment and

provide for manpower as and when required. No extra payment in any such respect be

payable to contractor.

4. Contractor shall while entering into agreement shall produce the registration certificate of

his establishment with the competent authority of Regional Provident Fund Commissioner

failing which 3% (Three percent) of the bill value due to be paid to Contractor shall be

deducted at source and will be dealt as per Clause 74 of B-1 from.

5. In conformity with prevailing Income-Tax Rules necessary of bill value shall be deducted at

source for which necessary certificate shall be deducted by the Chief Officer.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

6. Contractor shall also provide assistance representative and/or authentic person for the

purpose of inspection and verification of transit damages, defects etc. for the insurance

claims but shall not charge any extra payment against such assistance provided.

7. Security deposit of 10% of contract value will be deposited by contractor as per rules.

8. Tender fees, EMD etc. payable to GIDC, by the tenderer by D.D. of FDR etc. shall be drawn

in favour of Chief Officer, Notified Area Por-ramangamdi. The validity of FDR should

not be less than 180 days.

9. Bank guarantee shall not be accepted in any case.

4. GENERAL SPECIFICATION

1. The entire work shall have to be carried out as per the specification of P.W.D. Hand Book

2. The entire work shall be carried out as per the instructions of the Engineer and to his entire

3. The specifications of the materials shall be followed as per front sheet.

4. No extra payment will be made due to change in design and plans of the structure.

5. The contractor shall have to make his own arrangements for water to be used in the

construction work.

5. FOLLOWING CORRECTIOSN ARE THERE IN B1 AGREEMENT BOOKLET.

CONTRACTORS MAY PLEASE BE READ CAREFULLY.

1. Any sort of correction or erasures in the tender shall not be done by the tender, by applying

white fluid or any other chemical. The tender with correction made in aforesaid manner shall

be outrightly rejected by Corporation.

2. If any corrections erasures or overwriting are required by the tendered before submitting the

tender, all the corrections shall be initialed by the tenderer only before submission of the

tender, otherwise the tender shall be rejected by the corporation.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

SPECIFICATION OF MATERIALS

(1) All materials to be used shall conform to the relevant specifications as per the latest edition of Indian

Standard, unless otherwise stated in the detailed specifications of items of work.

(2) All materials to be used shall be of approved quality & make as per list of approved make attached with the

tender documents

(3) Wherever a reference to any Indian Standard appears in the specification, it shall be taken to mean as a

reference to the latest version of the standard.

(4) The following specifications, standards, and codes are made a part of this specification\Tender document.

Indian Standards : specification for building materials, specification for equipment, method of test, method

of measurement of building works ,code of practice for construction , safety code for demolition of building,

safety code for scaffolds etc. published by the Bureau of Indian Standards

(5) The contractor shall invariably carry out Materials & work Tests as specified in the tender document (B1-

Form) and IS code. However, if the additional tests are required as per the opinion of the Engineer-in-

charge, the same shall also have to be carried out. All such tests shall be got carried out in Government or as

approved laboratories and cost thereof shall be entirely borne by the contractor. No collection of materials

shall be made before it is got approved from the Engineer-in-charge.

(6) Collection of approved materials shall be done at site of work in a systematic manner. Materials shall be

stored in such a manner as to prevent deterioration or intrusion of foreign matter and to ensure the

preservation of their quality and fitness for the work.

(7) Materials, if rejected by the Engineer-in-charge, shall be immediately removed from the site of work. If they

are not removed within twenty four hours of receiving such intimation, Engineer-in-charge shall get the same

removed at contractor’s cost.

The Engineer-in-charge shall dispose off such materials in a manner as he chooses and the contractor shall not entitle

to any compensation for the cost of such materials.

(8) Approval to the samples of various materials given by the Engineer-in-charge will not absolve the contractor

from the responsibility of replacing the defective material brought on site of materials used in the work found

defective at a later date. The contractor shall have no claim to any payment or compensation whatsoever on

account of any such materials being rejected by the Engineer-in-charge.

(9) The contractor shall be responsible for observing the law, rules and regulations imposed under the “Minor

Minerals Act “ and such officer laws and rules prescribed by Government from time to time.

Water shall not be salty or brackish and shall be clean, reasonably clean and free from objectionable quantities of silt

and traces of oil and injurious alkalis, organic matter and other deleterious material which will either weaken the

mortar or concrete or cause efflorescence or attack the steel in RCC container for transport storage and handling of

water shall be clean.

If required by Engineer-in-charge it shall be tested by comparison with detailed water. Comparison shall be made by

means of standard cement, tests, soundness, time of setting and mortar strength as specified in IS- 269-1976. Any

indication of unsoundness, change in time of setting by 30 minutes or more or decrease of more than 10 percent in

strength of mortar, prepared with water sample when compared with the resulted obtained with mortar prepared with

distilled water shall be sufficient cause for rejection of water under test.

Water for curing to mortar concrete or masonry should not be too acidic or too alkaline, it shall be free of elements

which significantly affect the hydration reaction or otherwise interfere with the hardening of mortar or concrete

during those produce objectionable stain or other unsightly deposits on concrete or mortar surface. Hard and bitter

shall not be used for curing. Potable water will generally be found suitable for curing of mortar or concrete.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Lime shall be hydraulic lime as per I.S. 712-1973. Necessary tests shall be carried out as per IS- 69332 (Part I to X)

Storage shall comply with I.S. 712-1973. The slacked limes if stored shall be kept in a weather proof and damp-

proof shed with impervious floor and sides be protected it against rain, moisture, weather and extraneous materials

mixing with it. All limits that have been damaged in any way shall be rejected and all rejected materials shall be

removed from site of work.

Field testing shall be done according to I.S. 1624-1974 to show the acceptability of materials.

Cement shall be ordinary Portland cement as per I.S. 269-1975.

The contractor shall take every precaution to store the cement properly. So that it is not spoiled by dampness etc.

Cement required for use shall be fresh as possible and stored on plank raised 15 to 20 cms above the floor and

stacked 30 cms. Away from the wall in suitable closed whether proof godown at the site of work. Cement shall be

stored in such a way to allow the removal and use of cement in chronological order on receipt i.e. first received being

first used. Not more than 15 bags shall be stacked vertically in one pile and maximum width of the piles should not

be more than 3 meters. Any cement which has deteriorated caked or which has been set or partially set shall not be

used. When temporarily stored in open for use it shall be kept on a suitable platform and suitably protected as

Different brands of cement or cement of the same brand from different factories shall be stored in separate groups

and shall not be mixed during use. Cement shall be kept in a store under double locking arrangement. A board

indicating stock and daily transaction or cement shall be kept in each room of the cement store. Daily account of

receipt and use of cement bag shall be maintained by the contractor in the Performa prescribed by the Engineer-in-

The cement shall be measured by one bag for all use in concrete (except otherwise stated) etc. In no case cement

shall be measured by boxes or other means for the volumetric proportion of concrete and mortar. For calculation for

the proportion, the volume of the cement bag shall be taken as 0.0342 cu.m. (1.20 cf) and measuring of size 30 cms x

30x38 cms for concrete works. If weight batch concrete is to be used, the cement shall have to be used as per actual

weight and the contractor shall not be entitled for any compensation for loss in weight due to shifting of bags or on

account of any other reasons.

M-4 White cement :

The whole cement shall conform to IS- 8042-E-1076.

M-5 Coloured cement :

Coloured cement shall be with white or grey Portland cement as specified in the item of the work.

The pigments used for coloured cement shall be of approved quality and shall not exceed 10% of cement used in the

mix. The mixture of pigment and cement shall be properly ground to have a uniform colour and shade. The pigment

shall have such properties to provide for durability under exposure to sunlight and weather. The pigments shall have

the property such that it is neither affected by the cement nor determent to it.

Sand shall be natural and clean, well graded, hard strong durable and gritty partition free from injuries amount of

dust, clay, kankar nodules, or of flaky partition shale alkali, salts, organic matter loam mica or other deleterious

substance shall be got approved from the Engineer-in-charge if sand is covered with dust it shall be washed with

water to make it clean.

(A) The sand to be used in cement mortar for masonry work and first coat of plaster should generally satisfy the

following grading.

I.S. sieve Percentage by weight passing through.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(B) The fineness modules shall not exceed 3.0. Sand to be used in cement mortar for stone slab lining work, pointing

and second coat of plaster may have the grading.

I.S. sieve Percentage by weight passing through.

The fineness modules shall not exceed 1.6.

(C) Sand to be used for concrete work shall of grades as specified in I.S. 383-1970 with fineness modules varying

from 2.6 to 3.6 as per requirement.

The sand shall be stacked carefully on a clean hand surface. Sand of approved quality shall be obtained from

approved sources and will be allowed to be used for work.

M-7 Stone Dust :

This shall be obtained from crushing hard black trap stone. It shall not contain more than 8% of silt determined be

field test with measuring cylinder. The method of determining silt content by field is given as under.

A sample of stone dust to be tested shall be placed without drying in 200 mm measuring cylinder. The quantity of the

sample shall be such that it fills the cylinder up to 100mm mark. The clean water shall be added up to 150mm mark.

The mixture shall be stirred vigorously and the content allowed settling for 3 hours.

The height of silt visible as settled layer above the stone dust shall be expressed as percentage of height of the stone

dust below. The stone dust containing more than 8% silt shall be washed so as to bring the silt content within the

allowable limit.

The fineness modules of stone dust shall not be less than 1.80.

M-8 Black Trap Grit :

Grit shall consist of crushed or broken stone and be hard, strong dense, durable clean of proper gradation and free

from skin or coating likely to prevent proper adhesion of Mortar Grit shall generally be cubical in shale and as far as

possible flaky elongated pieces shall be avoided. It shall generally comply with the provision of IS – 383-1970.

Unless special stone of particular quarries are mentioned, aggregate shall be broken from the best black trap stone as

approved by the Engineer-in-charge. Stones shall have no deleterious reaction with cement.

The grit shall conform to the following gradation as per sieve analysis.

I.S. sieve designation Percentage passing for sieve.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The crushing strength of grit shall be such as to allow the concrete in which to be used to built up the specified

strength of concrete.

The necessary test for grit shall be carried out as per the requirement of I.S.- 2386-Part-I to VIII of 1993 or as revised

from time to time as per instruction of the Engineer-in-charge.

M-9 Cement Mortar :

Cement : Cement shall conform to specification M-3

Water: Water shall conform to specification M-1

Sand: Sand shall conform to specification M-6.

Proportion of mix :

Cement and sand shall be mixed to specified proportion. Sand being measured by measuring boxes. The proportion of

cement will be by volume on the basis of 50 kg/bag of cement being equal to 35 liters or 0.0342 M3. The mortar may

be hand mixed or machine mixed as directed by the Engineer-in-charge.

Preparation of mortar:

In hand mixed mortar, cement and sand in the specified proportion shall be thoroughly mixed dry on a clean

impervious platform by turning over at least 3 times of more till a homogeneous mixture of uniform colour is

obtained. Mixing platform shall be so arranged that no deleterious, extraneous material shall be get mixed with mortar

or mortar shall flow out, while mixing the water shall be gradually added and thoroughly mixed to form a stiff plastic

mass of uniform colour so that each particle of sand shall be completely covered with a film of wet cement. The water

cement ratio may be adopted as directed by the Engineer-in-charge.

The mortar so prepared shall be used within 30 minutes of adding water; only such quality of mortar shall be prepared

as can be used within 30 minutes. The mortar remaining unused after that period or mortar which has partially

hardened or damaged shall not be re-tempered or remixed. It shall be destroyed or thrown away.

M-10 Black trap stone coarse aggregate for plain and ordinary reinforced concrete.

Coarse aggregate shall be of machine crushed stone of black trap and be hard strong, dense, durable, clean and free in

skin and coating likely to prevent proper adhesion of mortar. The aggregate shall generally be cubical in shape.

Unless special stones or particular quarries are mentioned, aggregates shall be machine crushed from the best black

strap stone as approved by the Engineer-in-charge. Aggregate shall leave no deleterious reaction with cement. The

size of the coarse aggregate for plain cement concrete and ordinary reinforced cement concrete shall generally be as

per the table given below. However, in case of reinforced cement concrete the maximum limit may be restricted to

mm less than the minimum lateral clear distance between bars or 6mm less than the cover which is smaller.

L.S. sieve designation. Percentage Passing for single of Size 16mm

aggregates 40 mm nominal size 20 mm

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

This percentage may be varied some what by the Engineer-in-charge when considered necessary for obtaining better

density and strength of concrete.

Single size coarse aggregates conforming to the requirements in Table No. 1 above or following nominal size shall be

used at site with the other ingredients of concrete as indicated below. The mixing shall be in a mixture or on the

platform as directed in case of CC 1:5:10 only. For CC 1:4:8, CC 1:3:6, CC 1:2:4 and CC 1:1 1/2:3 mixing with the

other ingredient of concrete shall be done in the mixture only except for small works.

(1) CC 1:5:10 - Nominal size of aggregate 40 mm

(2) CC 1:3:6 - Nominal size of aggregate 20 / 40 mm

(3) CC 1:4:8 - Nominal size of aggregate 40 mm

(4) CC 1:2:4 - Nominal size of aggregate 20 mm

(5) CC 1:1 :3- Nominal size of aggregate 20 mm

The grading test shall be taken in the beginning and at the change at the source of materials. The necessary test

indicated in IS 383-1970 and 456-1978 shall have to be carried out to ensure the acceptability. The aggregates shall

be stored separately and handled in such a manner to prevent the inter mixing of different aggregates. If the

aggregates are covered with the dust, it shall be washed with water to make it clean. The coarse aggregates for plain

and reinforced concrete shall be measured by volume in the steel or wooden boxes prepared as per the direction of the

Engineer-in-charge.

M-11 Black trap stone coarse aggregates for controlled reinforced concrete:

Coarse aggregate shall be of machine crushed stone of black trap and be hard, strong, dense, durable, clean and free

from skin and coating likely to prevent proper adhesion mortar.

The aggregates shall generally be cubical in shape. Unless special stones of particular quarries are mentioned,

aggregate shall be machine crushed from the best, black trap stone as approved by the Engineer-in-charge. Aggregate

shall have no deleterious reaction with cement.

In proportion concrete, the quantity of coarse aggregate shall be determined by weight only. The grading of coarse

aggregate shall be controlled by obtaining the aggregate in different size and blending them in the right proportions as

per concrete mix design approved by the Engineer-in-charge. The different sizes shall be stocked in separate stock

piles. The grading of aggregates shall be checked as frequently as possible. The frequency for verification of the

grading shall be as directed by the Engineer-in-charge to ensure that the grading as maintained uniform with that of

the samples used in the preliminary tests.

The necessary test indicated in I.S. 383-1976 and I.S. 456-1978 shall have to be carried out to ensure the acceptability

of the material.

If aggregate is covered with dust, it shall be washed with water to make it clean.

M-12 Brick Bats Aggregate :

Brick aggregates shall be broken from well burnt to slightly over burnt and dense bricks. It shall be homogeneous in

texture, roughly cubical in shape, clean and free from dirt of any other foreign material. The brick bats shall be of

40mm to 50mm unless otherwise specified in the item. The under burnt to over burnt brick bats shall not be allowed.

M-13 Bricks / flyash building brick :

(A) First class Bricks :

The bricks shall be hand or machine moulded and made from suitable soils and klin burnt. They shall be free from

cracks and flows modules of free time. They shall have smooth rectangular faces with sharp corners and shall be of

uniform colour. The bricks shall be moulded with a frog of 100mm x 40 mm and 10mm to 20 mm deep on one of the

flat sides. The bricks shall not break when thrown on the ground from a height of 600 mm.

The size of modular bricks shall be 190mmx90mm x 90mm and shall conform to IS 1077-1976 in respect of tolerance

for sub-class “A” bricks.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The crushing strength of the bricks shall not be less than 35 kg / sq.cm. The average water absorption shall not be

more than 20 percent by weight. Necessary tests for crushing strength and water absorption shall be carried out as

directed by the Engineer-in-charge.

(B) Second class bricks:

The second class bricks shall be similar to first class bricks except that they may be permitted to have slight distorted

and rounded edges provided no difficulty shall arise on this account in laying of uniform courses.

M-14 Mild Steel Bars :

Mild steel bars reinforcement for RCC work shall conform to I.S. 432 1966 and of tested quality. It shall also comply

with relevant part of IS 456-1978.

All reinforcement shall be cleaned and free from dirt, oil, paint, grease, mill’s make or loose or thick rust at the time

Reinforcement steel shall be stored such as to avoid distortion and sogs of long length and shall be protected as far as

possible from surface deterioration. All bars of the same designation shall be stacked separately as far as possible and

distinctly marked. For the purpose of payment the bar shall be measured correct up to 10mm length and weight

payable worked out at the rate specified below.

1 6 mm 0.22 kg / Rmt

2 8 mm 0.39 kg / Rmt

3 10 mm 0.62 kg / Rmt

4 12 mm 0.89 kg / Rmt

5 14 mm 1.21 kg / Rmt

6 16 mm 1.58 kg / Rmt

7 18 mm 2.00 kg / Rmt

8 20 mm 2.47 kg / Rmt

9 22 mm 2.98 kg / Rmt

10 25 mm 3.85 kg / Rmt

11 28 mm 4.83 kg / Rmt

12 32 mm 6.31 kg / Rmt

13 36 mm 7.99 kg / Rmt

14 40 mm 9.86 kg / Rmt

M-15 High Yield Strength Steel Deformed Bars/TMT/CRS :

High yield strength steel deformed bars shall be either cold twisted or hot rolled and shall conform to IS 1786-1979

& I.S. 1139-1966 respectively or as revised from time to time.

T.M.T. shall conform to IS 1789-FE415 or as revised from time to time. Approved make for TMT bar shall be Tata,

Shah Alloys, Malhotra, Rajury, Sirhind, Thermax

Corrosion Resistance Steel shall conform to relevant IS code or as revised from time to time.

Other provisions and requirements shall conform to specification No. M -14 for Mild steel bars.

M-16 Mild Steel Binding Wire :

The mild steel wire shall be of 1.63mm or 1.22mm (16 or 18 gauge) diameter and shall conform to IS 280-1978 or as

revised from time to time.

The use of black wire will be permitted for binding reinforcement bars. It shall be free from dust, oil paint, grease,

loose mill scale or any other undesirable coating which may prevent adhesion of cement mortar.

Storage: The wire coils shall be stored such as to avoid deterioration.

Measurement: No measurement will be taken of the wire used for tying reinforcement bars. The rate for

reinforcement steel and its fabrication shall include the cost of binding wire.

M-17 Structural Steel :

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

All structural steel shall conform to I.S.226-1975 & I.S. 800-1962 or as revised from time to time. The steel shall be

free from defects mentioned in I.S. 226-1975 and shall have smooth finish. The material shall be free from loose mill

scale, rust pits or other defects affecting the strength and durability Rivet bars shall conform to I.S. 1148-1973.

Structural steel shall be stored such as to avoid distortion of section of long length and shall be protected as far as

practicable from surface deterioration. It should be so stored and handled that material will not be subject to

excessive stress and damages. All deformed structural material will be properly straightened by methods which are

not injurious prior or being aid off, punched or otherwise worked in the shop. Sharp kinks and bends shall be caused

When the steel is supplied by the contractor test certificate of the manufacturers shall be produced, if so required by

the Engineer-in- charge. If further test be necessary, they will be done according to I.S. 226-1975 & I.S. 223-1950 or

as revised from time to time.

M-18 Shuttering :

The shuttering shall be either of wooden planking of 30mm minimum thickness with or without steel sheet lining or

of steel plates stiffened by steel angles. The shuttering shall be supported on battens and beams and props of vertical

bellies properly cross braced together so as to make the form work rigid.

The form work shall be sufficiently strong and shall have camber, so that it assumes correct shape after deposition of

the concrete and shall be able to resist forces caused by vibration of live load of men working over it and other

incidental loads associated with it. The shuttering shall have smooth and even surface and its joints shall not permit

leakage of cement grout.

If at any stage of work during or after placing concrete in the structure, the forms work sags or budges out beyond the

required shape of the structure, the concrete shall be removed and work redone with fresh concrete and adequate rigid

form work. The complete form shall be got inspected by and approved from the Engineer-in-charge before the

reinforcement bars are placed in position.

If wooden props are used, the props shall consist of bellies having 100mm minimum diameter measured at mid

length and 80mm at thin end and shall be placed at 1 to 1.20 m. spacing. These shall rest squarely on wooden sole

plates 10 mm thick and minimum bearing area of 0.10 sq.m. laid on sufficiently hard base.

Double wedges shall further be provided between the sole plate and the wooden props so as to facilitate tightening

and casing of shuttering without jarring the concrete.

The timber used in shuttering shall not be so dry as to absorb water from concrete and swell budge nor so green or

wet as to shrink after erection. The limber shall be properly swan and planned on the sides and the surface coming in

contact with concrete. Wooden from work with metal sheet lining or steel plates stiffened by steel shall be permitted.

As far as practicable clamp shall be used to hold the forms together and use of nails and spikes avoided.

The surface of timber shuttering that would come in contact with concrete shall be well wetted and coated with soap

solution before the concreting is done. Alternatively coat of soap solution or raw linseed oil of approved

manufacturer may be applied in place of soap solution or raw linseed oil shall be applied after thoroughly cleaning

The shuttering for beams and slabs shall have camber of 4 mm per meter (1 in 250) or as directed by the Engineer-in-

charge so as to offset the subsequent deflection. For cantilever the camber at free end shall be 1/50 of the projected

length or as directed by the Engineer-in-charge.

The period that shall elapse after concrete has been laid before easing and removal of centering and shuttering as

under taken shall be as follows :

Part of structure Period

1 Sides of foundation, columns beams & walls. 34 to 48 hours

2 Undersides of slabs up to 4.5 m span 7 days.

3 -do- above 4.5 m add under side of beams and arches up 14 days.

4 -do- above 6 m. span and up to 9 m span. 21 days

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

5 Undersides of beams and arches over 9 m span 28 days

6 Domes: Shall & other structure of special nature. As per instruction.

Work damaged through premature or careless removal of forms shall be reconstructed. The period for striking the

form work shall be 1.5 times more in case of Pozzolona cement if used then that of the ordinary Port land cement and

the contractor shall not entitle for any extra claim for the same.

M-19 Expansion Joints, Pre-moulded Filler :

The item provides for expansion joints in R.C.C. frame structure for internal joints, as well as for exposed joints with

the use of pre-moulded bituminous joint filler.

Pre-moulded bituminous joint filler i.e. pre-formed strip of expansion joints filler shall not be deformed or broken by

twisting bending or other handling when exposed to atmospheric condition. Pieces of joint filler that have been

damaged shall be rejected.

Thickness of the pre-moulded joint filler shall be 25mm unless otherwise specified pre-moulded bituminous joints

filler shall conform to I.S. 1938-1961 or as revised from time to time.

M-20 Expansion Joints – Copper Strip & Holdfast :

The item provides for expansion joints in R.C.C. frame structure for internal joints as well as for exposed joints with

the use of necessary copper strip and hold fasts. Copper sheet shall be of 125 mm thick and 125mm or required width

with the “U” shape in the middle. Copper strip shall hold fast of 3mm diameter copper rod fixed to the plaster

shoulders on strip at intervals of about 30 or as shown in the drawing or as directed by the Engineer-in-charge. The

width of each flange (horizontal side) of the copper plate to be embedded in the concrete work shall be 25mm depth

of “U” to be provided in the expansion joint in the copper plate shall be of 25mm.

M-21 Teak Wood :

The teak wood shall be of good quality as required for the item to be executed when the kind of wood is not specially

mentioned good Indian Teak Wood as approved by the Engineer-in-charge shall be used.

Teak wood shall generally free from large, loose, dead or cluster knots, flows, shakes, wraps twists bends or any other

defects it shall generally be uniform in sub-stance and of straight fibers as far as possible. It shall be free from root,

decay, harmful fungi and other damages of harmful nature which will affect the strength durability or its usefulness

for the purpose for which it is required. The colour shall be uniform as far as possible. Any effort like painting using

and adhesive or resinous materials, made to hide the defects shall render the pieces liable to rejection by the Engineer-

All scantlings, planks etc. shall be swept in straight lines and planes in the direction of grains and of uniform

The tolerance in the dimensions shall be allowed at the rate of 1.5mm per face to be planned.

All glass shall be of the best quality, free from specks, bubbles, smokes, veins, air holes, blisters and other defects.

The kind of glass to be used shall be as mentioned in the item of specification or in the special provisions or as shown

in detailed drawings. Thickness of glass panels shall be uniform. The specification of different kind of glass shall be

In absence of any specified thickness or weight in the item of detailed specifications of the item of work sheet glass

shall be weighing 7.5 kg/ sq.m. up to 600mm x 600mm.

For panes larger than 600mmx600mm up to 800mmx800mm the glass weighting not less than 8.75 kg /sq.m. shall be

used. For bigger panes up to 900mmx900mm glass weighting less than 11.25 kg/ sq.m. shall be used.

Sheet glass shall be patent Battened glass of best quality and for glazing and framing purposes shall conform to IS –

2835-1977. Sheet glass of the specified colour shall be used, if shown on detailed drawings or so specified. For

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

important buildings and for panes with any dimensions 900 plate glass of specified thickness shall be used.

When plate glass is specified, it shall be “Polished Patent Plate Glass” of best quality. It shall have both the surface

ground flat and parallel and polishedto obtain clear undisturbed vision and reflection. The plate glass shall be of the

thickness mentioned in the item or as shown in the details drawing or as specified. In absence of any specified

thickness, the thickness of plate glass to be supplied shall be 6mm and to tolerance of 0.55 to 0.88 mm shall be

Obscured Glass:

This type of glass transmits lights so that vision is partially or almost completely, obscured. Glass shall be plain rolled

or double rolled, figured, ribbed or fluted, or frosted glass as may be specified or required, the thickness and types of

glass shall be as detailed on drawings or as specified or as directed by the Engineer-in-charge.

Glass shall be with wire netting embedded in a sheet or plate glass electrically, welded 13mm. Georgian square mesh

shall be used. Thickness of glass shall not be less than 6 mm wired glass shall be of type and thickness specified.

M-23 Fixtures & Fastenings :

The fixtures and fastenings that is but things, tee and strap hinges, sliding door bolts, tower bolts, door latch,

bathroom latch, handles, door stoppers, casement window fasteners, casement stays and ventilators catch shall be

made of the metal as specified in the item or its specifications.

They shall be of iron, brass, aluminum chromium plated iron, chromium plated brass, copper, oxidized iron, copper

brass or anodized mat aluminum, stainless steel matt as specified.

The fixtures shall be approved make as per list of approved make attached with the tender document. The fixtures and

fastenings shall be smooth finished and shall be such as will ensure case of operations.

The sample of fixtures and fastenings shall be got approved as regards quality and shape before providing them in

Their size shall conform to those prescribed in C-12. In respect of other dimensions not specified they shall conform

to relevant I.S.

Hold fast shall be made from mild steel flat 50mm length at one end of the hold fast shall be bent at right angle and

two Nos. of 6mm diameter holds shall be made in it for fixing it to the frame with screws. At the other end, the hold

fast shall be forked and bent at right angles in opposite direction.

Medium type iron butt hinges shall be specified.

Tee and strap hinges shall be manufactured from M.S. sheet as specified in the item.

Sliding Door Bolts (Aldrops )

In case of single leaf door, where iron socket plate or brass or aluminum fixing bolts (for sliding door bolt) cannot be

fixed, a hole of suitable size shall be drilled in the door frame and a counter sunk plate not less than 1.5mm thick cut

to shape shall be fixed at the face of the holes.

Tower Bolts (Barrel Type)

Mild steel door bolts shall be made in one piece. Knobs of tower bolts shall be cast and knob fixed in the bolt.

The size of the door latch shall be taken as the length of latch.

Bathroom Latch:

Bathroom latch shall be similar to tower bolt. The size of the handles shall be determined by the inside grip length of

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Door stopper shall be either floor door stopper type or door catch type. Floor door stopper shall be of overall size as

specified and shall have a rubber cushion.

Door catch shall be fixed at a height of about 900 mm from the floor level such that one part of catch is fitted on the

inside of the shutter and the other part is fixed in the wall with necessary wooden plug arrangements for appropriate

fixity. The catch shall be fixed 20mm inside the face of the door for easy operation of catch.

Casement window fastener:

Casement window fastener for single leaf window shutter shall be left or right hand as directed.

Casement stays (straight peg stay):

The stays shall be made from a channel section having three holes at appropriate position so that the window can be

opened either fully or partially as directed.

The base socket plate shall be made from minimum 3 mm thick plate, and protected pivot shall not be less than

mm diameter and 12mm length and shall be firmly riveted to the base plate in case of iron pivot. Size of the stay shall

be 250mm, 800mm as directed.

(A) Oil Paints :

Oil paints shall be of the specified colour and shade, and approved by the Engineer-in-charge. The ready mixed paints

shall be used. However, if it ready mixed plaint of specified shade or tint is not available white ready mixed paint

with approved strainer shall be allowed in such a case, the contractor shall ensure that the shade of the paints so

allowed be uniform.

All the paints shall meet with the following general requirement:

i) Paints shall not show excessive setting in a freshly opened full cane and shall easily be redispersed

with a paddle to a smooth homogeneous state. The paint shall show no curding, levering, cracking or

colour separation and shall be free from lumps and skins.

ii) The paint as received shall brush easily possesses good leveling properties and show no running or

sagging tendencies.

iii) The paint shall not skin within 48 hours in a three quarters filled closed container.

iv) The paint shall dry to smooth uniform finish free from roughness, grit, unevenness and other

Ready mixed paint shall be used exactly as received from the manufacturers and generally according to their

instructions and without any admixtures whatsoever.

(B) Enamel Paints:

The enamel paint shall satisfy in general requirements as mentioned in specification of oil paints.

Enamel paint shall conform to IS 2933-1975 or as revised from time to time.

M-25 French Polish :

The French polish of required tint and shade shall be prepared with the below mentioned ingredients and other

necessary materials.

i) Denatured spirit

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The French polish so prepared shall conform to I.S. 348-1968 or as revised from time to time.

M-26 Marble Chips for Marble Mosaic Terrazzo :

The marble chips shall be Makrana white or Chittor pink, yellow, green and black , Jaisalmer yellow, Baroda green,

Deheradun white, grey (surat) and Alwar black or as specified. It shall be hard, sound, dense and homogeneous in

texture with crystalline and coarse grains. It shall be uniform in colour and free from stains cracks, decay and

The size of various colours of marble chips ranging from the smallest up to 20mm shall be used where the thickness

of top wearing layer is 6mm size. The marble chips of approved quality and colours only as per grading as decided by

the Engineer-in-charge shall be used for Marble Mosaic Tiles or works.

The marble chips shall be machine crushed. They shall be free from Foreign matters, dust, etc. Except as above the

chips shall conform to I.S. 2114-1962 or as revised from time to time.

M-27 Flooring Tiles :

(a) Plain Cement Tiles:

The plain cement tiles shall be of general purpose type. These are the tiles in the manufacture of which no pigments

The tiles shall be manufactured from a mixture of cement and natural aggregates by pressure process. During

manufacture tiles shall be subjected to a proportion of not less than 140 kg / sq.mt. The proportion of cement to

aggregate in the backing of the tiles shall be not less than 1:3 by weight. The wearing face through the tiles are of

plain cement shall be provided with stone aggregates on 1 to 2 mm size. The proportion of cement to be aggregate in

wearing layer of the tiles shall be three parts of cement to one part of chips by weight. The minimum thickness of

wearing layer shall be 3 mm. The colour and texture of wearing layer shall be uniform through out its face and

thickness. On removal from mould, the tiles shall be kept in moist condition continuously at least for seven days and

subsequently if necessary, for such period that would ensure their conformity to requirements of I.S. 1237-1980

regarding resistance to wear and water absorption.

The wearing face of the tiles shall be plane, free from projections, depressions and cracks and shall be reasonably

parallel to the back face of the tiles. All angles shall be right angles and all edges shall be sharp and true.

The size of tiles shall generally be squared shape size 24.85 cm x 24.85 cm or 25 cm x 25 cm. The thickness of tiles

shall be 20 mm.

Tolerance on length and breadth shall be plus or minus one millimeter. Tolerance on thickness shall be plus 5 mm.

The tiles shall satisfy the test as regards transverse strength, resistance to wear and water absorption as per I.S. 1237-

1980. Necessary tests shall be got carried out by the contractor.

(B) Plain Coloured Tiles :

These tiles shall have same specification as per plain cement tiles as per (A) above except that they shall have a plain

wearing surface wherein pigments are used. They shall conform to IS 1237-1980.

The pigment used for colouring cement shall not exceed 10 percent by weight of cement used in the mix. The

pigments, synthetics or otherwise used for colouring tiles shall have permanent colour and shall not contain materials

detrimental to concrete.

The colour of the tiles shall be as specified in the item or directed by the Engineer-in-charge.

(C) Marble Mosaic Tiles / Terrazzo tiles :

These tiles shall have the same specifications as per plain cement tiles except that requirements as stated below:

The pigment incorporated in terrazzo shall be of permanent colour and shall conform to requirement mentioned in

Appendix-A in I.S. 2114-1962. The marble powder shall passed through I.S. sieve Terrazzo-30. Marble chips shall

conform to M-26.

The marble mosaic tiles shall conform to I.S. 1237-1980. The wearing face of the tiles shall be mechanically ground

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

and filled. The wearing fact of tiles shall be free from projection, depressions, and cracks and shall be reasonably

parallel to the back face of the tiles. All angles shall be right angel and all edges shall be sharp and true.

Chip used in the tiles shall be up to 6mm sizes. The minimum thickness of wearing layer of tiles shall be 6 mm. For

pattern of chips to be had on the wearing face, few samples (with or without their full size photographs as directed by

the Engineer-in-charge) shall be presented to the Engineer-in-charge for approval.

Any particular samples, if found suitable shall be approved by the Engineer-in-charge or he may ask for few more

samples to be prepared indicating roughly the particular sized chips to be more or less in the sample presented. The

sample shall have to be made by the contractor till a suitable sample is finally approved for use in the work. The

contractor shall ensure that the supplied for the work shall be in conformity with the approved sample only tiles in

item of its dimensions thickness of backing layer and wearing surface material ingredients, colour, shade chips

distribution etc. required.

The tiles shall be prepared from cement conforming to I.S. or coloured Portland cement generally depending upon the

colour of tiles to be used or as directed.

M-28 Rough Kotah Stone :

(A) Kotah Stones :

The kotah stones shall be hard, even, sound and regular in shape and generally uniform in colour. The colour of the

stone shall generally be Green. Brown or yellow coloured, stones shall not be allowed for use. They shall be without

any soft veins, cracks or flows.

The sizes of the stones to be used for flooring shall be of size not less than 600mm x 450mm as directed. However,

smaller sizes will be allowed to be used to the extent of maintaining required pattern. Thickness shall be as specified.

(B) Polished Kotah Stones :

Polished kotah stone shall have the same specification as per rough kotah stone as per (A) above except as mentioned

The stone shall have machine polished smooth surface. When brought on side, the stone shall be single or double

polished depend upon the its use or as described in the item of Schedule “B”. The stone for flooring shall generally be

single polish. The stone to be used for dedo, skirting, platform, stair case steps etc. shall be double polished&all

exposed edges rounded.

M-29 Dholpur Stone Slab :

Dholpur stone slab shall be for best quality as approved by the Engineer-in-charge. The stone slab shall be without

any veins, cracks and flaws. The stone slab shall be even, sound and durable, regular in shape and of uniform colour.

The size of the stone shall be as specified in the item or detailed drawing or as approved by the Engineer-in-charge.

The thickness of the stone shall be as specified in the item of work with the permissible tolerance of plus or minus

2mm. The provisions in respect of polishing as per M-29 (B) of polished kotah stone shall apply to polished Dholpur

stone also. All angles and edges of the face of the stone slab shall be file chiseled or polished as specified in the item

of work and all the four edges shall be machine cut. All angles and edges of the stone slab shall be true square cut and

free from chippings and surface shall be true and plane.

The sample of stone shall be got approved from the Engineer-in- charge for shade and tint for a particular work. It

shall be ensured that the stones to be used in a particular work and shall not differ much in shade or tint from the

approved sample.

M-30 Marble Slab :

Marble slabs shall be white or of another colour and of best quality as approved by the Engineer-in-charge.

Slab shall be hard, close, uniform and homogeneous in texture. They shall have even crystalline grain and free from

defects and cracks. The surface shall be machine polished to an even and perfectly plane surface and edges machine

cut true and square. The rear face shall be rough enough to provide key for the mortar.

Marble slabs with natural veins. If selected have to be laid as per the pattern given by the Engineer-in-charge. Size of

slab shall be minimum 450mm x 450mm preferably 600mm x 600 mm. However, smaller size will be allowed to be

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

used to the extent of maintaining required pattern.

The slab shall not be thinner than the specified thickness at its thinnest part. A few specimen of finished slab to be

used shall be deposited by the contractor in the office for reference.

Except as above, the marble slab shall conform to IS 1130-1969 or as revised from time to time.

M-31 Granite Stone Slab :

Granite shall be of approved colour and quality. The stone shall be hard sound, durable, resistant to wear, rectangular

or square in shape and as directed by the Engineer-in-charge. Uniformity of size shall generally be maintained for the

stones used in any one room. The stone shall be without any soft. Veins, cracks or flaws and shall have uniform

colour. They shall have natural surface free from broken flakes on top, and the exposed surface shall be machine

polished to a smooth, even and true plane and the edges hand cut and dressed true and square. The evenness of the

surface of slabs and edges of the slab shall not be marred by careless dressing or handling and no patching up shall be

allowed for the slab. The edges shall be quite straight. The under face may be left as required or rough dressed.

Before taking up the work samples of stone slabs, to be used and their dressing and polishing shall be got approved by

the Engineersin-charge and will keep them in his office' for reference and the stone slabs to be used shall conform to

the approved sample.

The maximum water absorption percentage and minimum compressive strength shall be as given in Table – 1 below:

Type of Stone Maximum Water Minimum Compressive

Absorption percentage by strength Kg/Sq. cm

Note -1: Test for compressive strength shall be carried out aslaid down in IS: 1121(Part1).

Note -2: Test for water absorption shall be carried out as laid down in IS:

The thickness of the stone shall be as specified in the item.

The Granite stone of approved colour shall be double polished on single or both side as per requirement of items to be

All exposed faces shall be double polished to render truly smooth and even reflecting surface. The exposed edges and

corners shall have rounded off as directed. The exposed edges shall be machine cut& rounded and shall have uniform

M-32 White Washing :

Following materials shall be used for preparing white wash.

1. Fresh burnt white stone or lime.

2. Gum Arabic 2.0 kg / cmt. of lime.

3. Indigo as required.

It shall conform to relevant I.S. specifications.

M-33 Distemper :

Oil bound washable distemper of approved brand and manufacture and colour and shade shall be used. It shall

conform to IS 427-1965. Distemper shall be used according to the manufacturer’s instructions only.

M-34 White Glazed Tiles :

The tiles shall be of second class quality as approved by the Engineer-in-charge. They shall be flat and true to shape.

They shall be free from cracks, crazing spots, chipped, edges and corners. The glazing shall be of uniform shade.

The tiles shall be of nominal size of 150mm x 150mm unless otherwise specified. The maximum variation from the

stated sizes, other than the thickness of tiles, shall be plus or minus 1.5mm. The thickness of tiles shall be 6 mm.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

except as above the tiles shall conform to IS 777-1970.

M-35 Galvanized Iron Pipes & Fitting :

Galvanized Iron pipe shall be of the medium type and of required diameter and shall comply with IS 1239-1979. The

specified diameter of the pipes shall refer to the inside diameter of the bore. Clamps, screws, all galvanized iron

fittings shall be of the standard “R” or equivalent make.All the pipes and fittings shall have ISI certification mark.

The pipe and fittings shall be smooth, sound, free from any imperfections and neatly dressed. The pipe and fittings

shall be above to withstand a safe pressure of 6kg per square centimeter.

M-36 Bib Cock & Stop Cock :

A bib cock is a drawn off tap with a horizontal inlet and free outlet. A stop cock is a valve with a suitable means of

connection for inserting in a pipe line for controlling stopping the flow.

They shall be of sPVCcrew down type and of brass chromium plated and of diameter as specified in the description of

the item. It shall conform to IS 781-1977 or as revised from time to time and they shall be of best Indian make. They

shall be polished bright.

The minimum finished weight of bib cock and stop cock shall be as given below :

Diameter Bib cock Stop cock

M-37 Gun Metal Wheel valve :

The gun metal wheel valve shall be of approved quality, these shall be of the gun metal fitted with wheel and shall be

of gate valve opening full way and of the size as specified. They shall conform to I.S. 778-1980.

M-38 White Glazed Porcelain Wash Basin :

Wash basin shall be of white porcelain of approved quality best Indian make and it shall conform to IS 771-1979 or

as revised from time to time. The size of the wash basin shall be as specified in the item. Wash basin shall be of one

piece construction with continued over flow arrangements. All internal angles shall be designed so as to facilitate

cleaning. Wash basin shall have simple tap hole as specified. Each basin shall have a circular waste hole which is

either rebated or leveled internally with 65mm diameter at top 10 mm depth to suit the waste fitting. The necessary

stud slot to receive the bracket on the under side of the basin shall be provided. Basin shall have an internal soap

holder recess which shall fully drain into the bowl. Necessary CP brass waste, CP chain, brass CP 15mm dia socket,

bottle trap, PVC waste pipe, waste plug and waste couplings shall be provided. The pillar cock for wash basin shall

be in conformation with the I.S. 1275-1976 or as revised from time to time. The height from the floor to top of the

rim of basin shall be 750 to 800 mm as directed.

M-39 European type water closet:

The European type water closet shall be white glazed porcelain second quality and shall be of wash down type

conforming to I.S. 2556-1981 and 771-1979 or as revised from time to time.

“S” trap shall be provided as required with water seal not less than 50 mm. The solid plastic seat and cover shall be

of the best Indian make conforming to I.S. 2548-1980 or as revised from time to time. They shall be made of

moulded synthetic materials which shall be tough and hard with high resistance to solvents and shall be free from

blisters and other surface defects as shall have chromium plated brass hinges and rubber butter four number of

M-40 Indian type Water closet :

The Indian type white glazed water closet of second quality shall be of size as specified in the item conforming to IS

771-1979 and I.S. 2556 (Part-II) 16981. Each pan shall have materials flushing ring of suitable type with adequate

number of holes around as directed to have satisfactory flushing. It shall also have an inlet or back or front for

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

connecting flush pipe as directed by the Engineer-in- charge. The inside of bottom of pan shall have sufficient slope

from the front towards the outlet and surface shall be uniform and smooth.

Pan shall be provided with 100mm diameter “P” or “S” trap with approximately 50mm water seal and 50mm

diameter Vent horn.

A pair of white glazed earthen ware rectangular foot rests of minimum size 250mm x 130mm x 20mm shall be

provided with the water closet.

M-41 Flush Cock :

Half turn flush cock (Medium weight) shall be of brass chromium plated of diameter as specified in the description of

the item. The flush cock shall conform to relevant IS or as revised from time to time.

The flush cock shall be of a make as approved by the Engineer-in-charge.

M-42 Cast Iron Pipes & Fittings :

All soil, waste, vent and anti-symphonize pipes and fittings shall conform to IS 1729-1979 or as revised from time to

time. The pipes shall have spigot and socket ends with head on spigot end. The pipes and fitting shall be true to

shape, smooth, cylindrical their inner and outer surfaces being a nearly as practicable concentric. They shall be sound

and nicely cast and shall be free from cracks, laps, pin holes or other imperfection and shall be neatly dressed and

carefully fettled.

The ends of pipes and fittings shall be reasonable square to their axis.

The sand cast iron pipes shall be of the diameter as specified in the description and shall be in length of 1.5, 1.8m and

2m. including socket ends of pipes unless shorter length either are specified or require at junctions etc. Tee pipes and

fittings shall be supplied without ears unless specified or directed otherwise.

The standard weights and thickness of pipes shall be as shown in the following table:

A tolerance up to minus 10 percent may however be allowed against these standard weights.

Sr. No. Nominal dia of Thickness Overall weight of pipes excuding ears.

1.5m long 1.8 m long 2.0 m long

A tolerance up to minus 15 percent in thickness and 20mm in length will be allowed. For fittings tolerance in lengths

shall be plus 25mm and minus 10 mm.

The thickness of fittings and their socket and spigot dimensions shall conform to the thickness and dimensions

specified for the corresponding size of straight pipes. The tolerance in weights and thickness shall be the same as for

straight pipes.

M-43 Nahni Trap :

Nahni trap shall be sound and free from porosity or other defect which affects serviceability, the thickness of the base

metal shall not be less than 6.5 mm. The surface shall be coated with vitreous enamel thoroughly fused to the cast

iron base. The coating shall be adequate even and shall cover the entire surface. The surface shall be glossy, smooth

and free from craze, chips and other flows or any other kind of defect which affect serviceability. The size of Nahni

trap shall be as specified and shall be self cleansing design.

The Nahni trap shall be of best quality approved by the Engineer-in-charge and shall generally conform to the

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The Nahni trap provided shall be with deep seal, minimum 50mm except at places where trap with deep seal cannot

be accommodated. C.I. Jali shall be of appropriate size and quality.

M-44 Gully Trap :

Gully trap shall conform to I.S. 651-1980. These shall be sound, free from visible defects such as fire cracks or hair

cracks. The glaze of the traps shall be free from crazing. There shall give a sharp clear tone when struck with light,

hammed. There shall be no broken blisters.

The size of the gully trap shall be specified in the item.

Each gully trap shall have on CI grating of square size corresponding to the dimensions of inlet of gully trap. It shall

also have water tight. C.I. cover with frame inside dimensions 300 mm x 300 mm. The cover weighting not less than

4.53 kg., and the frame not less than 2.72 kg. The grating cover and frame shall be of sound and good casting and

shall have truly square machined scatting facts.

M-45 Glazed Stoneware Pipe & Fittings :

The pipes and fittings shall be of best quality as approved by the Engineer-in-charge. The pipe shall be of best quality

manufactured from stoneware of fire clay, self glazed thoroughly burnt through out the whole thickness of a close

event texture, free from air blows, fire blisters, cracks and other imperfections, which affect the serviceability. The

inner and outer surface shall be smooth and perfectly glazed. The thickness of the wall shall not be less than 1/ 12th of

the internal dia. The depth of socket should not be less than 38 mm. The socket shall be sufficiently large to allow a

joint of 6mm around the pipe.

The pipes shall generally conform to relevant I.S. 651-1980.

M-46 GI Water Spout :

The G.I. pipes of 40 mm dia shall be medium quality and specials shall be of “R” brand or equivalent brand of best

approved quality.

The pipes shall have length as required for thickness and wall in which it is fixed and at the outside end one tee and

bend cut at half the length shall be provided and at other end coupling shall be provided to have better fixing. the

water spout shall be provided as per detailed drawing or as directed by the Engineer-in-charge.

M-47 Selected earth / Murrum :

The selected earth / Murrum shall be that obtained from excavated material or shall have to be brought from outside

as indicated in the item. If item does not indicate anything the selected soil shall have to be brought from outside.

The selected earth / Murrum shall be good yellow soil and shall be got approved from the Engineer-in-charge in case

black cotton soil or similar greatly expensive and shrinkable soil shall be used. It shall be cleaned and free from all

rubbish and perishable materials, stones or bats. The cold shall be broken to a size of 50mm or less. Contractor shall

make his own arrangement at his own cost for land for borrowing selected earth / Murrum. The stacking of material

shall be done as directed by the Engineer-in-charge in such a way as not to interfere with any construction activities in

When excavated material is to be used only selected stuff got approved from the Engineer-in-charge shall be used. It

shall be stacked separately and shall comply with all requirements of selected mentioned in Para 2 above.

M-48 Rolling shutters :

The rolling shutters shall be of approved makes and design and shall be suitable for fixing in position as directed by

the Engineer-in-charge.

The shutter shall be built up of inter locking lath section formed from cold rolled strips. The size of different

component shall be as per IS 6248-1979.

The cold rolled steel grip shall be rolling shutter lath section conforming to I.S. 4030-1973.

The self coiling type rolling shutter shall be raised lowered manually by means of a pulling applied to the pulling

handle fixed on the bottom lock place to the top most position with each.

The thickness of steel sheets from which the lath sections have been rolled shall be not less than 0.9 mm for shutter

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

up to 3.5 m width and not less than 1.2mm. Shutter above 3.5 m width.

The lath section shall be rolled so as to have interlocking curls at bottom edges and a deep corrugation at the centre

with a bridge depth of not less than 12 mm for each lath section shall be continuous signal place without any welded

The depth and width of guide channel shall be as under :

Clear width of shutter Min. depth of guide channel.

8 M and above 100 mm

Width of guide channel shall be 25mm for lath section with bridge depth of about 12 mm and 32mm for lath section

with bridge depth of about 16 mm. Size of bracket plate for different height of different rolling shutter shall be as

Clear height Mt. Size of bracket plate minimum

Above 2.3 & up to 2.6 Mt. 325x325x3.15

Above 2.6 & up to 3.00 350x350x3.15

Above 3.0 & up to 3.5 375x375x3.15

Above 3.5 & up to 4.5 400x400x6.00

Above 4.5 & up to 5.5 450x450x6.00

Above 5.5 & up to 6.50 500x500x10.00

Size of shaft pipe shall be as given below :

Width Size of pipe

Up to 2.0 32mm nominal bore

Up to 3.0 m 40mm nominal bore

Up to 6.00 m 50mm nominal bore

Hood cover shall be made of mild steel not less than 0.9 mm thick.

Urinal shall be of 2nd class quality white porcelain of approved quality, best Indian make and it shall conform to IS

1556-Part-II 1974 with suitable size of side collar for fixing in position. The size of urinal shall be as specified in the

item. Urinal shall be of one piece construction. All internal angles shall be designed so as to facilitate cleaning.

Urinal shall have single tap hole as specified. Urinal shall a circular waste hole which is 65mm dia and 100 mm deep

to suit the waste fitting.

Necessary C.P. brass stop cock with PVC connection of specified size shall conform to I.S. 781-1977. Necessary

PVC reducer with PVC waste pipe of 25mm dia shall be designed to make height from the floor to the top of the rim

of the urinal 550 to 600 mm as directed.

M-50 Wooden flush door shutters (solid Core) :

The solid core type flush door shutters shall be decorative or non-decorative in the drawing. The size and thickness of

the shutter shall be as specified in drawings or as directed. The timber species for core shall be used as per IS- 2202 –

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(Part-1) 1980. The timber shall be free from decay and insect attack. Knots and know holes less than half the width of

cross section of the members in which they occur may be permitted. Pitch pockets, pitch streaks and harmless pin

holes shall be permissible except in the exposed edges of the core members. The commercial plywood, cross – bands

shall conform to I.S 303-1275.

The face panel of the shutters shall be formed by gluing by the hot press on both faces of the core with either

plywood or cross-bands and face veneers. The hopping rebating opening of glazing, venation etc. shall be provided if

specified in the drawing.

All edges of the door shutters shall be square. The shutters shall be free from twist or warp in its plane. Both faces of

the shutters shall be sand papered to smooth even texture.

The shutter shall be tested for :

1. End immersion test : The test shall be carried out as per IS 2202 (Part-I) 1980. There shall be no

delaminating at the end of the test.

2. Knife Test : The face panel when tested in accordance with IS 1659-1979 shall be pass the test.

3. Glue adhesion test : The flush door shall be tested for glue adhesive test in accordance with I.S.

(Part-I) 1980. The shutters shall be considered to have passed the test if no delaminating occurs in the

glue lines in the plywood and if no single delaminating more than 80mm in length and more than 3 mm

in depth has occurred in the assembly glue lines between the plywood face and the style and rail.

Delaminating at the corner shall be measured continuously around the corner. Delaminating at the knots,

knot holes and other permissible wood defects shall not be considered in assessing the sample.

The tolerance in size of solid core type flush door shall be as under :

In normal thickness +/- 1.2mm

In normal height +/- 3mm.

The thick of the shutters shall be uniform throughout with a permissible variation of not more than 0.8 mm when

measured at any two points.

M-51 Aluminum doors, windows, ventilators :

Aluminum alloy used in the manufacture of extruded window sections shall conform to I.S. designation HEA-WP of

I.S. 733-1975 and also to I.S. Designation WVG-WP of I.S. 1285-1975. The section shall be as specified in the

drawing and design. The fabrication shall be done as directed.

The hinges shall be cast or extruded aluminum hinge of same type as in window but of large size.

The hinges shall normally be of 50mm projecting type. Non-projecting type of hinges may also be used if directed.

The handles of door shall be of specified design. A suitable lock for the door operatable either from outside or inside

shall be provided. In double shutter door, the first closing shutter shall have concealed aluminum alloy bolt at top and

M-52 Collapsible Steel Gate :

The collapsible steel gate shall be in one or two leaves and size as per approved drawings or as specified. The gate

shall be fabricated from best quality mild steel channels, flats etc. Either steel pulleys or ball bearings shall be

provided in every double channel. Unless otherwise specified the particulars of collapsible gates shall be as under :

a) Pickets : These shall be of 20mm M.S. channels of heavy sections unless otherwise shown on

drawings. The distance centre to centre of pickets shall be 12 cms. with an opening of 10 cms.

b) Pivoted M.S. flats shall be 20mm x 6mm.

c) Top and bottom guides shall be from tee or flat iron of approved size.

d) The fittings like stoppers, fixing hold fast, locking cleats, brass handles and cast iron rollers shall

be of approved design and size.

M-53 Plastic sections for door / window partition etc.

Technical features for plastic section shall be as under:

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

i) Material of construction shall be specially formulated PVC compounds.

ii) Water absorption: 0.8% at 100 degree Centigrade in 24 hours thus virtually water and moisture

iii) Chemical resistance: It shall be resistance to acid / alkalis.

iv) Fire resistance: Self-extinguishing classified under first class construction material by insurance

v) Termite and Fungal resistance: Material shall be fully resistance to termite and fungal attack.

vi) Thermal conductivity: Very low thermal conductivity co-efficient varies from 0.015 to 0.016 Kcal /

vii) Acoustic property: Max. absorption shall be up to 38%.

M-54 Water Proofing Cement Paint:

Water proofing cement paint of approved shade shall conform to IS-5410-1969 or as revised from time to

time. Primer shall be best quality, make and as approved by the Engineer-in-charge. The materials required

for work of painting shall be obtained directly from approved manufacturer or approved dealer and brought

to the site in maker’s drums, keys etc. with seal unbroken.

M-55 Stone For Bela Masonary:

Pucca approved white stone bella of sand of uniform size shall be dressed, earth/murrumy or discolnged or weathered

or water worm stone shall not be used. The size of bella stone shall as directed by Engineer to suit the width of wall.

Corner stones & quoins shall be of good quality and should be dressed to correct angle. The corner stone shall be got

approved before bringing to site.

The stone shall be free from defects like cavity, flaws, sand holes, and veins, patches of soft or loose material. The

percentage of water absorption shall generally not exceed 5 % by weight. Generally, the stone shall not contain silica

or chert, mica or any other deleterious material like iron oxide organics impurities etc. The crushing strength of bella

stone shall not less than 300 Kg/cm2. Transverse strength shall not less than 70 Kg/cm2.

M-56 Vitrified floor tiles :

Vitrified floor tiles shall be of best quality & approved make as approved by the Engineer. They shall conform to the

relevant I.S. codes.

Vitrified tiles using for floor finishing should confirm ISO13006/E176 group B.1.a of international standards and

also should confirm of testing methods of norms EN

The vitrified tiles shall be Monolithic and available in smooth, mirror polished and anti-skid finish. Their water

absorption rate shall be less than 0.5%. They shall offer hard working and hardwearing floors for public buildings.

The tiles shall be of ASTM or DIN standards.

The vitrified tiles shall be extremely strong breaking strength of the tiles being 1600 kg./cm2, flexural strength

kg. / Cm2 and bounding strength of 2500 kg/cm2. There shall after good resistance to abrasion i.e. greater than

There shall be scratch resistance; their hardness on the Moh’s scale shall be min. 7. They shall also to resist thermal

shock up to 10 cycles. They shall have a density of 2.2 gm/cc. They shall have 0.6 co-efficient of friction for polished

/ unpolished surfaces.

M-57 85 mm thick pre-cast Rubber molded interlock paver concrete block

The 85mm thick pre-castRubber molded interlock paver concrete block shall be manufactured by electrical hydraulic

operated block marking machine. The block should have minimum compression strength of 300 kg. Per sq.cm. The

minimum thickness of the pre-castRubber molded interlock paver concrete block shall be 85mm and minimum size

shall be 300x300mm. The block shall be of approved make & best quality as approved by the Engineer-in-charge.

The size, shape, and shade of pre-castRubber moulded interlockpaver concrete block shall be as approved by the

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Engineer-in-charge. There shall be true to shape. There shall be free from crack, crazing, and spots etc.

M-58 Acrylic roof Sheets:

Acrylic roof sheets shall be of thickness as specified in the item. The shape and size of sheet shall be as directed.

Acrylic roof Sheets may be flat or curved. It should be light in weight. It shall be colourless or coloured or opaque.

Colourless sheet shall be as transparent as the finest optical glass. Its light transmission rate shall be about 95%.

Transparency shall not be affected for the sheets of larger thickness. It shall be extremely resistant to sunlight,

weather and low temperatures. It shall not show any significant yellowing or change in physical properties or loss of

light transmission over a longer period of use. The sheet shall be impact resistant also. Sheet should be available in

complete range of standard transparent, man lucent and opaque colors. Sheets shall be of such quality that they can

be cut bent and jointed as desired. Solution for the joints shall be used as per the requirement of manufacturer.

M-59 Galvanised iron pipes and fittings :

Galvanised iron pipe shall be of the medium type and of required diameter and shall comply with I.S.I 239-1979. The

specified diameter of the pipes shall refer to the inside diameter of the bore. Clamps, screw and all galvanised iron

fittings shall he of the standard ‘R’ or equivalent make.

M-60 Crydon Ball Valve :

Ball valve of screwed type including polthylene float and necessary lever etc. shall be of the sizeas

mentioned in the description of item and shall conform to I.S. 1703-1977.

The plywood for general purpose shall conform I:S. 303-

Plywood is made by cementing together thin boards or sheets of wood into panels. There are always an odd

number of layers 3, 5,7, 9 ply etc. The plies are placed so that grain of each layer is right angle to the grain in

the adjacent layer.

The chief advantages of plywood over a signal board of the same thickness is the more uniform strength of

the plywood, along the length and width of the plywood and greater resistance to cracking and splitting with

change in moisture content, Usually synthetic resins are used for gluing, pherolic resins are usually cured in a

hot press which compresses and simultaneously heats the plies between hot plates which maintain a

temperature of 90 degree. C. to 140 degree C. and a pressureof 11 to 14 Kg/Sq. Cm. on the wood. The times

of healing may be anything from 2 to 60 minutes depending upon thickness.

When water glue are used, the wood absorbs so much water that the finished plywood must be dried

carefully. When synthetic resins are use as adhesive finished plywood must be exposed to an atmosphere of

controlled humidity until the proper amount of moisture, has been absorbed.

According to I.S. 303-1975 the plywood for general purpose shall be of three grades namely BWR, WWR

and CWR, depending upon the adhesives used for bonding and veneers, and it will be farther classified into

six types namely AA. AB. AC, BB, BC and C,C based on the quality of the two faces, each face being of

three finds namely, A, B. and C. After pressing, the finished ply wood should be reconditioned to a moisture

content not less than 8 percent and not more than 16 percent.

CODE OF PRACTICE

(1) The method of execution of the items shall conform to the relevant specifications as per the latest version of

the Indian Standard unless specified otherwise and as far as applicable.

(2) Wherever a reference to ANY Indian Standard appears in the specification, it shall be taken to mean as a

reference to the latest version of the standard.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

(3) The following specifications, standards, and codes are made as a part of this specification.

Indian Standards : specification for building materials, specification for equipment, method of test, method

of measurement of building works ,code of practice for construction , safety code for demolition of building,

safety code for scaffolds etc. published by the Bureau of Indian Standards

(4) The contractor shall invariably carry out Materials & work Tests as specified in the tender document (B2-

Form) and IS code. However, if the additional tests are required as per the opinion of the Engineer-in-charge,

the same shall also have to be carried out. All such tests shall be got carried out in Government or as

approved laboratories and cost thereof shall be entirely borne by the contractor. No collection of materials

shall be made before it is got approved from the Engineer-in-charge.

All moulds, equipments etc. required of preparing specimens for the test shall be kept in sufficient numbers and in

good state, as directed by the Engineer-in-charge on the site of work.

Specimen for tests shall sent to the laboratory along with representative of GIDC in time and the results thereof shall

be promptly obtained and reported to the Engineer-in-charge.

(5) Satisfactory test results shall not observed the contractor from dismantling and re-doing any work revealed to

the defective at a later date. The contractor shall have no claim for any payment or compensation whatsoever

on account of replacement of such defective work. Contractor shall take all precautions and care during

dismantling and re-doing the work to ensure that any other work so far executed does not get damage or

(6) The work shall be carried out in true line and level and in conformity with the detailed drawing and specified

(7) All the work shall be carried out in a workmanship like manner and as per the best techniques for the

particular item.

(8) All tools, tempts equipments etc. for correct execution of the work as well as for checking lines, levels,

alignments of the works, during execution shall be kept in sufficient numbers on the side of work.

(9) All installations pertaining to water supply and its fixtures as well as drainage lines and sanitary fitting shall

be deemed to be completed only after giving satisfactory tests by the contractor.

(10) Scaffolding being provided by the contractor at his own cost for such of the items for the execution of

which it is essential.

In all sorts of soil, sand, gravel, soft murrum and other similar soft or loose material. The excavation will generally

refer to the open excavation for foundation.

Clearing the site:

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

of all kind, bush, wood, and trees shall be removed as directed. The materials so obtained shall be the property of the

GIDC and shall be conveyed the stacked as directed by the Engineer-in-charge.

After clearing the site the centre lines will be given by the Engineer. The contractor shall assume full responsibility

for alignment, elevation, and dimension of each and all parts of the work. Contractors shall supply labour materials,

etc. required for setting out the reference marks and bench marks and shall maintain them as long as required.

It shall be all sorts of soil, sand, gravel, soft murrum, or other similar soft or loose materials.

The excavating for foundation and for basement shall be carried out in true line and level and shall have the width and

depth as shown in the drawing or as directed by the Engineer-in-charge. The contractor shall do the necessary

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

shorting and shutting or slopes to a safe angel, if necessary including bailing and pumping out water when separate

provision does not exist for it in tender, at his own cost. The bottom of the excavated area shall be leveled both

longitudinally and transversely as directed by the Engineer-in-charge. No earth filling will be allowed to bring it to

level if by mistake or any other reasons excavation is made deeper or wider than shown on the plan or directed by the

Engineer-in- charge. The extra depth or width shall be made up with concrete or masonry of the foundation grade as

directed by the Engineer-in- charge and at the cost of the contractor.

Disposal of the excavated stuff:

The excavated stuff of the selected type shall be used in filling the trenches in layers including ramming and watering

The balance of the excavated quantity shall be removed by the contractor from site of work to a place as directed by

the Engineer-in-charge with all lead and lift but within the same estate.

1 Excavation in Hard murrum :

Same as C-1/1 except that the excavation shall be in hard murrum.

2 Excavation in Hard murrum and boulders.

Same as C-1/1 except that the excavation shall be in hard murrum and boulders.

3 Excavation in soft rock :

Same as C-1/1 except that the excavation shall be in soft rock.

4 Excavation in Hard rock.

Same as C-1/1 except that the excavation shall be in hard rock

C-2 Plain Cement Concrete Laying in Foundation / for Floor Bedding :

Before starting concrete, the bed of the foundation trenches shall be cleared of all loose materials and watered as

Proportioning of Mix:

The proportion of the cement to sand and coarse aggregates shall be as specified in the item and shall be measured by

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

smaller quantities of work if approved by the Engineer-in-charge. The mixing shall be done for a period of 11/2 to

minutes. The quantity of water shall be just sufficient to produce a dense concrete of required workability for the

All scaffolding, hoisting arrangement and ladders etc. required for the facility of concrete shall be provided by the

contractor and removed on completion of work. The scaffolding, hoisting arrangement and ladders shall allow easy

approach to the work and afford easy inspection.

The form work shall be provided if necessary as directed by the Engineer-in-charge and shall be as per I.S. 461-1972

or revised from time to time.

Transporting & placing the concrete:

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

method as directed by the Engineer-in-charge and shall be placed into its final position, compacted and finished

within 30 minutes of mixing with water i.e. before the setting commences.

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

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The concrete shall be thoroughly compacted by hammers immediately after depositing to get a dense concrete.

Concrete shall not be disturbed once it has set.

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

days from the date of placement.

C-3 Lime Cinder Concrete Laying :

This shall be as per C-2 of code of practice. The coarse aggregate in this case shall cylinder.

C-4 Ordinary Cement Concrete Plain or Reinforce :

I.S. 466-1978 or as revised from time to time shall be followed in general cement sand by black trap grit and coarse

aggregate shall be measured by volume. For proportioning of cement by volume one bag of cement shall be taken as

Concrete shall be mixed in a mechanical mixer. Mixing shall be continued until there is a uniform distribution of the

materials and the mass is uniform in colour and consistency but in no case shall mixing be done for less and 1.1/2

minutes. When hand mixing is permitted by the Engineer-in-charge in case of small work or in case of break down of

machineries and in the interest of the work it shall be carried out on a water tight platform and care shall be taken to

ensure that mixing is continued until the mass is uniform in colour and consistency. However, in such cases 10%

more cement than otherwise required have to be used without any extra cost.

Concrete shall be handled from the place of mixing of the final position as quickly as practicable by methods which

will prevent segregation or loss of ingredients. In no case operation shall be taken more than 15 minutes.

The concrete shall be placed into its final position and completed and finished within 30 minutes of mixing the water

and before setting commence. Method of placing shall be such as to avoid segregation, approved by the Engineer-in-

charge. Concreting shall be carried out continuously up to construction joints, the position and arrangement of which,

shall be pre-determined by the designer.

When the work has to be resumed on a surface which has hardened, such surface shall be roughened. It shall then be

swept clean thoroughly wetted and covered with a thin layer or mortar composed of cement and sand in the same

proportion as the cement and sand in the concrete mix. This layer of mortar shall be freshly mixed and placed

immediately before the placing of the concrete.

When the concrete has not fully hardened, all laitance shall be removed by scrapping the wet surface with wire or

bristles care being taken to avoid dislodgement of particles or aggregates. The surface shall be thoroughly wetted and

all free water removed. The surface shall be coated with neat cement grout. The first layer of concrete to be placed on

this surface shall not exceed 150mm in thickness and shall be well rammed against old work. Particular attention is

paid no corners and spots.

Concrete shall be thoroughly compacted during the operation of placing and thoroughly worked around the

reinforcement, around embedded fixtures and into corners of the form work. Compacting shall be done by mechanical

vibrations, in such a way that a dense mix is obtained.

The concrete shall be kept covered with a layer of sacking canvas or similar materials or by pounding and kept

constantly wet for twenty one days from the date of placing concrete. Curing by pounding shall preferably be done by

erecting suitable dykes of lean mortar.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The form work shall conform to the shape, lines and dimensions as on the plans and be so constructed as to remain

sufficiently rigid during the placing and compacting of the concrete, and shall be sufficiently water tight to prevent

loss of liquid from concrete. Adequate arrangements shall be made by the contractor to safeguard against any

settlement of the form work during the course of concreting and after concreting. The design of the form work and

centering shall be got approved form Engineer-in-charge before erection.

Cleaning & Treatment of Forms:

All rubbish, particularly chipping shavings and saw dust shall be removed from the interior of the forms before the

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

with an approved composition. Care shall be taken that such approved composition is kept out of contract with

Stripping Time:

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

(a) Walls columns & vertical side of beams 24 to 48 hours as may be decided by

the Engineer-in-charge.

(b) Side of slabs 3 days

(c) Beam 7 days

(d) Removal of props to slabs.

(i) Slabs spanning up to 4.5 M 7 days.

(ii) Spanning over 4.5 M 14 days.

(e) Removal of props to beams & arches.

(i) Spanning up to 6 M

(ii) Spanning over 5 M 14 days

Procedure when removing the Form work:

All form shall be removed without such shock or vibrations as would damage the reinforced concrete surface. Before

the soffits and struts are removed and concrete surface shall be exposed where necessary in order to ascertain that the

concrete has sufficiently hardened. The form work will be paid under the respective item if provided in the tender.

The centering to be provided shall be got approved form the Engineer-in-charge. It shall be sufficiently strong to

ensure absolute safety of the form work and concrete work before, during, and after pouring concrete. Watch should

be kept to see that behavior of centering and formwork is satisfactory during concreting. Erection should also be such

that it would allow removal of forms in proper sequence without damaging either the concrete or the forms to be

The props of centering shall be provided on firm foundation of base of sufficient strength to carry the loads without

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

will not relive the contractor or his responsibility for strength, adequacy, and safety of form work and if there is a

failure of form work or centering, contractor shall be responsible for the damages to work, injury to life and damage

to the property.

All scaffolding, hoisting arrangements etc. required for the facility of concreting shall be provided and removed on

completion of work by the contractor at his own expenses. The scaffolding, hoisting arrangement and ladders etc.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

shall be strong enough to withstand all live, dead and impact loads expected to act and shall be subject to the

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

hoisting arrangement, ladders, work, and workmanship etc.

The scaffolding, hoisting arrangement and ladders shall allow easy approach to the work spot and afford easy

Work sample of concrete 150mmx150mm x 150mm shall be taken as under:

Qty. of work in M3 No. of sample

51 & above 4+1 for each additional quantity of 50 M or part

The contractor shall make his own arrangement for taking sample and testing of the sample in the Government or the

approved laboratories. The test shall be carried out in accordance with IS 516-1959 or as revised from time to time. A

register of cubes shall be maintained the site of work in the prescribed Performa. The result of the cubes shall be

submitted to the Engineer-in-charge by the contractor.

Note: (1) At least one sample shall be taken from each shift

(2) Each sample consists of three test specimens for testing at 28 days.

Additional cubes may be required for various purposes. Such as to determine the strength of concrete

at 7 days or at the time of striking the form work or to determine the duration of curing or to check

the testing error.

Finishing unless otherwise specified in the item to keep the exposed concrete surface, the concrete surface shall be

finished with cement mortar 1:4 (1- cement: 4-sand) in true line level in accordance with M-9 of specification of

C-5 Controlled concrete :

The concrete shall be designed as M-150, M-200, M-250, M -300 & M-400 as prescribed in I.S. 456-1978 or as

revised from time to time.

Samples of the aggregates proposed to be used shall be got approved from the Engineer-in-charge prior to collection

of the materials at the site of work field test for determining the content of silt, loam, clay etc. In fine aggregate and

grading and moisture content in both fine and coarse aggregate shall be carried out before commencing the concreting

work and record of the test shall be maintained till the completion of the work.

The grading of aggregate shall be controlled by obtaining the fine and coarse aggregate in different size being stocked

in separate stock piles. The grading of coarse and fine aggregate shall be checked as frequently as possible. The

frequency shall be as directed by the Engineer-in-charge, to ensure that the uniform grading as per approved samples

used in the preliminary tests is maintained.

As soon as possible, after receiving the order to commence the work the contractor shall design the mix for different

grades of concrete required in the work submit details in respect of proportion of cement and aggregates water cement

ration etc. and arrangement to make trial mixes for preliminary tests to be carried out in the Government or any other

approved laboratory to satisfy the Engineer-in-charge that the designed mix meets with the prescribed strength. The

maximum total quantity to aggregates by weight per 50 Kg. of cement shall not exceed 450 Kg. except where

otherwise specifically permitted by the Engineer-in-charge.

The minimum number of specimens for preliminary test and criteria for acceptance of test strength shall conform to

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Table –V Acceptance criteria for concrete of I.S. 456-1978.

On the satisfactory results of the above tests, the mix actually to be used shall be got approved from Engineer-in-

charge. The approval of the Engineer-in-charge will not relieve the contractor of his responsibility for obtaining the

required minimum strength in the work test. Record of all tests in support of mix design shall be maintained as a part

of record of the contract.

STRENGTH REQUIREMENT OF CONCRETE:

The compressive strength requirements for various grades of concrete shall not be lower than the figures given below:

Grade of Compressive strength of 15 cms cubes conducted in accordance with

concrete I.S. 516-1959.

After 28 days after At 7 days after At 28 days after

mixing in preliminary mixing in work test mixing in work test

test (Kg/cm2) (Kg/cm2)

PROPORTIONING & WORKS CONTROL:

The mix proportions shall be selected to ensure that the workability of the fresh concrete suitable for the

condition of handling and placing, so that after compaction it surrounds all reinforcement and completely

fills the form work. When concrete is hardened, it shall have the required strength, durability and surface

The determination of the proportions of cement, aggregate and water to attain the required strength shall as

(a) By designing the concrete mix; such concrete shall be called "Design Mix Concrete" or "Controlled

(b) By adopting nominal mix, such concrete shall be called "Nominal Mix

OPTIONAL WORK TEST REQUIREMENTS OF CONCRETE (All values in N/mm²)

(All tests conducted in accordance with IS: 516)

Modulus of Rupture by Beams Test

Grade of Compressive Strength of Min.

Concrete 150mm cubes, min at 7 days At 72 + 2 at 7 days

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The concrete mix shall be designed to have an average strength corresponding to the values specified for preliminary

tests in Table. The proportions chosen should be such that the concrete is of adequate workability for the conditions

prevailing on the work in question, and can be properly compacted with the means available. The maximum total

quantity of aggregate by weight per 50 kg. Of cement shall not exceed 450 kg. except where otherwise specially

permitted by the Engineer-in-Charge.

Except where it can be shown to the satisfaction of the Engineer-in-Charge that supply of properly graded aggregate

of uniform quality can be maintained over the period of work, the grading of aggregate should be controlled by

obtaining the coarse aggregate in different sizes and blending them in the right portions when required, the different

sizes being stocked in separate stock piles. The material should be stock piled for several hours preferably a day

before use. The grading of coarse and fine aggregate should be checked as frequently as possible, the frequency for a

given job being determined by the Engineer-in-Charge to ensure that the suppliers are maintaining the grading

uniform with that of the samples used in the preliminary test.

In proportioning concrete, the quantity of both cement and aggregate should be determined by weight, where the

weight of cement is determined by accepting the maker's weight per bag. A reasonable number of bags should be

weighted separately to check the net weight. Where the cement is weighed on the site and not in bags, it should be

either measured by volume in calibrated tanks or weighed. All measuring equipment should be maintained in clean

serviceable conditions, and their accuracy periodically checked.

It is most important to maintain the water cement ratio constant at its correct value. To this end, determination of

moisture contents in both fine and coarse aggregates should be made as frequently as possible, the frequency for a

given job being determined by the Engineer-in-Charge according to weather conditions. The amount of the added

water shall be justified to compensate for any observed variations in the moisture contents. For the determination of

moisture content in the aggregate for concrete: Part-III specific gravity, density, voids, absorption and bulking may

be referred to. To allow for the variation in weight of aggregate due to variation in their moisture content, suitable

adjustments in the weights of aggregate should also be made.

No substitutions in materials used on the work or alterations in the established proportions, except as permitted in the

above para shall be made without additional tests to show that the quality and strength of concrete are satisfactory.

WORKABILITY OF CONCRETE:

The concrete mix proportions chosen should be such that concrete is of adequate workability for the placing

conditions of the concrete and can properly be compacted with the means available. The definitions of the ranges of

"workability" of concrete as measured by either the slump or V-B tests (IS: 1199) and the range to be adopted for

different kinds of work unless specified otherwise is given in Table - 2.9.

WORKABILITY OF CONCRETE

Placing conditions Slump (mm) Values of Workability

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NA,GIDC,Por-ramangamdi

Vee-Bee Compacting

Blinding concrete; Very Low -- 20- 10 0.75 -

Shallow Sections; secs

Pavements using pavers

Mass concrete; Low 25 - 75 10 - 5 secs 0.80 -

Lightly reinforced sections in

slabs, beams, walls, columns;

Floors; Hand placed

pavements; Canal lining; Strip

Heavily reinforced sections in Medium 50 - 100 5 - 2 secs 0.85 - 0.92*

slabs, beams walls, columns; 75 -

Slip form work; Pumped

Trench fill; High 100 - 150 -- Above 0.92**

In-situ piling Very high Workability to be Above 0.92**

Termite concrete decided by

determination of

flow (IS: 9103)

Note: For most of the placing conditions, internal vibrators (needle vibrators) are suitable. The diameter of the needle

shall be determined based on the density and spacing of reinforcement bars and thickness of sections. For tremie

concrete, vibrators are not required to be used.

A competent person should be employed whose duty will be to supervise all stages in the preparation and placing of

the concrete. All works test specimens should be prepared and site tests carried out under his direct supervision

REQUIREMENT FOR DURABILITY:

Minimum cement content required in cement concrete to ensure durability under specified conditions of exposure

should be as given in Table 2.12 unless otherwise specified. The general environment to which the concrete will be

exposed during its working life is classified into five levels of severity, that is, mild, moderate, severe, very severe

and extreme as described in Table 2.13.

Minimum Cement Content, Maximum Water Cement Ratio and Minimum Grade of Concrete for Different

Exposures with Normal Weight Aggregates of 20mm Nominal Maximum Size

Exposure Plain Concrete Reinforced Concrete

Minimum Maximum Minimum Minimum Maximum Minimum

Cement Free Grade of Cement Free Grade of

Content Water- Concrete Content Water- Concrete

kg/m³ Cement kg/m³ Cement

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The general environment to which the concrete will be exposed during its working life is classified into five levels of

severity, that is, mild moderate, severe, very severe and extreme as described in Table 2.13.

ENVIRONMENTAL EXPOSURE CONDITIONS

Sr. Environment Exposure Conditions

1. Mild Concrete surfaces protected against weather or aggressive conditions, except

those situated in coastal area.

2 Moderate Concrete surfaces sheltered from severe rain or freezing whilst wet.

Concrete exposed to condensation and rain

Concrete continuously under water

Concrete in contact or buried under non-aggressive soil/ground water

Concrete surfaces sheltered from saturated salt air in coastal area

3. Severe Concrete surfaces exposed to severe rain, alternate wetting and drying or

occasional freezing whilst wet or severe condensation.

Concrete completely immersed in seawater

Concrete exposed to coastal environment

4. Very Severe Concrete surfaces exposed to seawater spray, corrosive fumes or severe

freezing conditions whilst wet.

Concrete in contact with or buried under aggressive sub-soil/ground water

5. Extreme Surface of members in tidal zone

Members in direct contact with liquid/solid aggressive chemicals

MIX DESIGN AND SAMPLING AND TESTING FOR CONCRETE

Facilities required for sampling materials, shall be provided when required by the Engineer. The methods used in

sampling, laying curing and testing the concrete samples, either in the field or in the laboratory, shall be in

accordance with the appropriate Indian Standards. This is to investigate the grading of aggregate, water cement ratio,

workability and the quantity of cement required to give works cubes of the minimum strength specified.

The mix shall be designed to produce the grade of concrete having required workability and desired characteristic

strength. As long as the quality of the materials does not change, a mix design done earlier may be considered

adequate for later work. As already stated under "proportioning" the proportion of the mix shall be by weight. In case

uniformity in the materials used for concrete making has been established over a period of time, the proportioning

may be done by volume batching, by the use of bulk densities, provided periodic checks are made on mass/volume

relationships of materials. Where weigh batching is not practicable, the quantities of fine and coarse aggregate (not

cement) may be determined by volume. If aggregate is moist and volume batching is adopted, allowance shall be

made for bulging in accordance with IS: 2386 (Part-III). Mix proportioning shall be carried out according to the ACI

Standard ACI 631 or "Design of Concrete Mixes” Road Research Note No.4 of Department of Scientific and

Industrial Research, U.K.

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

Whenever there is either a change in strength of concrete required, water cement ratio, workability or the source of

aggregates and cement, preliminary tests shall be conducted again to determine the revised proportions of the mix to

suit the later conditions. While designing mix proportions, over wet mixes should always be avoided.

PRELIMINARY TESTS:

The materials and proportion used in main preliminary tests shall be similar in all respects to hose to be actually

employed in the works as the object of this test is to determine proportion of cement, aggregates and water necessary

to produce the concrete of consistency required to give the strength specified. It will be the contractor's sole

responsibility to carry out these tests and he shall therefore furnish to the Engineer, statement of proportions

proposed to be used for concrete mix. For preliminary tests, the following procedure shall be followed. Materials

shall be brought to the room temperature and all materials shall be in a dry condition. The quantities of water, cement

and aggregate for each batch shall be determined by weight to an accuracy of 1 Part in

Concrete shall be mixed in a mechanical mixer. The mixer should comply with IS: 1791. The cement and fine

aggregate shall first be mixed dry until the mixture is in uniform colour. The coarse aggregate shall then be added,

mixed and water added and mixed thoroughly for a period of not less than two minutes after all the materials are in

the drum and until the resulting concrete is uniform in appearance. If there is segregation after unloading from the

mixer, the concrete should be remixed.

(b) The consistency of each batch of concrete shall be measured immediately after mixing, by the slump test in

accordance with IS: 1999. In the slump test, care shall be taken to ensure that no water is lost; the material used for

slump test may be remixed with the remainder of concrete for making the test specimen. The period of remixing shall

be as short as possible yet sufficient to produce a homogeneous mass.

Note: In exceptional circumstances such as mechanical breakdown of mixer, work in the remote areas or when the

quantity of concrete work is very small, hand mixing may be permitted, subject to adding 10% extra cement at his

(contractor's) cost. When hand mixing is permitted, it shall be carried out on a watertight platform and care shall be

taken to ensure that mixing is continued until the concrete is uniform in colour and consistency.

CONCRETE CUBES:

(a) Size of test specimen & moulds:

Test specimens cubical in shape shall be 150 x 150 x 150 mm. If the largest nominal size of the aggregate does not

exceed 200mm, 100 mm cubes may be used as an alternative.

A cube mould should be of metal and stout enough to prevent distortion. It shall be constructed in such a manner as

to facilitate the removal of the moulded specimen without damage, and shall be so machined that, when it is

assembled ready for use, the dimensions and internal faces shall be accurate within the following limits:

Height of mould and distance between opposite faces: Specified size + 0.2 mm.

Angle between adjacent faces: 90 + 0.5 degree

Each mould shall have a plane face metal base plate of such size as to support the mould during the filling without

leakage and shall be attached to the moulds; when assembled shall be positively and rigidly held together and

suitable methods of ensuring this, both during filling and on subsequent handling of the filled mould, shall be

provided. In assembling the mould for use, the joints between the sections of mould shall be thinly coated with

mould oil and a similar coating of mould oil shall be applied between the contact surfaces of the bottom of the mould

and the base plate in order to ensure that no water escapes during filling. The interior surfaces of the assembled

mould shall be thinly coated with mould oil to prevent adhesion of the concrete. The tamping bar shall be a steel bar

16 mm. in diameter, 0.6 m. long and bullet pointed at the lower end.

(b) Compacting:

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

The test specimens shall be made as soon as practicable after mixing and in such a way as to produce full compaction

of the concrete with neither segregation nor excessive laitance. The concrete shall be filled into the mould in layers

approximately 50 mm deep. In placing each scoopful of concrete, the scoop shall be moved around the top edge of

the mould as the concrete slides from it, in order to ensure a symmetrical distribution of the concrete within the

mould. Each layer shall be compacted as described below. After the top layer has been compacted, the surface of the

concrete shall be finished level with the top of the mould using a trowel, and covered with a glass or metal plate to

prevent evaporation.

For compacting, standard tamping bar shall be used and the strokes of the bar shall be distributed in a uniform

manner over the cross section of the mould. The number of strokes per layer required to produce specified conditions

will vary according to the type of concrete but in no cases shall be less than 35 strokes per layer for 150 mm cubes or

25 strokes per layer for 100 mm cubes. The strokes shall penetrate into the underlying layer and the bottom layer

shall be rodded throughout its depth. Where the tamping bar leaves voids, the sides of the mould shall be tapped to

close the voids.

The test specimen shall be stored on the site at a place free from vibration under damp-matting, sacks or other similar

material for 24 hours + 0.5 hour from the time of adding water to the other ingredients at a temperature range of 22

C to 32 C After 24 hours, they shall be marked for later identification, removed from the moulds and stored in clean

water at a temperature of 24 C to 30 C. They shall be sent to the testing laboratory well packed in damp sand, sacks

or other suitable material so as to arrive there in a damp condition not less than 24 hours before the time of test. On

arrival at the testing laboratory, the specimen shall be stored in water at 27 C +2 C temperature until the time of

test. Records of the daily maximum and minimum temperature shall be kept both during the period the specimens

remain on the site and in the laboratory.

(d) Tests for Cube Specimen:

The concrete cubes shall be tested in standard testing machines by skilled personnel. Tests shall be made at

recognized ages of the test specimen, the most usual being 7 and 28 days. Tests may be made at 24 hours + 1/2 hour

and 72 hours + 2 hours if early strengths are needed. The age shall be calculated from the time of the addition of

water to the dry ingredients.

At least three specimens, preferably from different batches shall be made for testing at each selected age.

Specimens stored in water shall be tested immediately on removal from the water and while they are still in the wet

condition. Surface water and grit shall be wiped off the specimens and any projecting fins removed.

The bearing surface of the testing machine shall be wiped clean and any loose sand or other material removed from

the surfaces of the specimen, which are to be in contact with the compression platens. The specimen shall be so

placed in the machine that the load shall be applied to the opposite sides of the cubes as cast, that is, not to the top

and bottom. The axis of the specimen shall be carefully aligned with the centre of thrust of the spherically seated

platen. No packing plates shall be used between specimen and platens of the machine. Once the uniform seating is

obtained, load shall be applied without shock and increased continuously at a rate of approximately 14.0 N/mm²

/Min. until the resistance of the specimen to the increasing load breaks down and no greater load can be sustained.

The maximum load applied to the specimen shall be recorded and the appearance of the concrete and any unusual

features in the type of failure shall be noted.

The measured compressive strength of the specimen shall be the maximum load applied to the specimen divided by

the cross sectional area of the specimen and shall be expressed to the nearest N. per sq. mm. Average of the values

shall be taken as the representative of the batch provided the individual variation is not more than + 15 percent of the

average. Otherwise repeat tests shall be made. Cube crushing strength shall conform to the values given in Tables

(e) Frequency of Sampling of Concrete Cubes:

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NA,GIDC,Por-ramangamdi

A random sampling procedure should be adopted to ensure that each concrete batch shall have a reasonable chance of

being tested; that is, the sampling should be spread over the entire period of concreting covering all mixing units. The

minimum frequency of sampling of concrete of each grade shall be as follows:

Quantity of concrete in the work cu.

5 Plus one additional sample for each additional 50m or

The test specimens shall be made from each sample for testing at 28 days. Additional cubes may be required for

determining strength of concrete at 7 days. The test strength of the sample shall be the average strength of three

specimens. The individual variation should not be more than 15 percent of the average.

Concrete shall be assessed daily for compliance. The contractor shall keep a record at site of all such tests identifying

them with the proportion of the work to which they relate. The Architects will check this record from time to time.

The said record shall give the following details and shall be initiated by the Engineer-in-Charge.

(i) Reference to specific structural member receiving the batch of concrete from which the cubes were cast.

(ii) Mark on cubes.

(iii) Mix of concrete.

(iv) Data and time of casting.

(v) Water cement ratio by weight and slump.

(vi) Crushing strength as obtained at the end of 7 days for 3 cubes out of a set of 6 cubes and the end of 28 days

for the remaining 3 cubes.

(vii) Laboratory in which tested and reference to test certificates.

(viii) The quantity of concrete, incorporated in work that is represented by the quantity of concrete of the set of the

(ix) Any other information required by Architects.

(f) Consistency:

The consistency of each sample of concrete shall be measured immediately after remixing by the slump test. The

slump shall be as directed by the Engineer, which would be based on the preliminary test result keeping in view, the

workability of the concrete. The approved slump shall be maintained through the field operations unless otherwise

directed by the Engineer. In order to ensure the maintenance of uniform consistency, slump tests shall be carried out

as often as demanded by the Engineer and invariably with the batch of concrete from which test cubes are made.

(g) Record of Temperature:

A record of maximum and minimum temperature at the places of storage of the cube shall be maintained, during the

period they remain at site, by the Contractor.

OPTIONAL TESTS:

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NA,GIDC,Por-ramangamdi

The Engineer, if he so desires, may order tests to be carried out on cement, sand, coarse aggregate in accordance with

the Indian Code of Practice or any other approved code.

Tests on cement shall include:

(i) Fineness Test,

(ii) Test for Normal Consistency,

(iii) Test for Setting Time,

(iv) Test for Soundness,

(v) Test for Tensile Strength,

(vi) Test for Heat of Hydration (by experiment and by calculations) in accordance with BIS or any other approved

standard for cements.

Test on sand shall include:

(ii) Test for Organic Impurities

(iii) Decantation Test for Determining Clay

(iv) Specific Gravity Test

(v) Test for Sieve Analysis and Fineness Modulus.

Tests on coarse aggregate shall include:

(i) Sieve Analysis

(ii) Specific Gravity and Unit Weight of Dry Loose and Rodded Aggregate (Bulk Density Test)

(iii) Determination of Yield of a Dry Mixture

(iv) Petrographic Examination of Deleterious Minerals in Aggregates.

(v) Test for Aggregate Crushing Value and 10% Fine Value Test.

(vi) Aggregate Impact Value

(vii) Toughness Test

(viii) Soundness Test

(ix) Hardness Test

(x) Alkali Aggregate Reaction

(xi) Deleterious Material

Any or all these test would normally be ordered to be carried out, if the specified concrete strengths are not obtained,

at the Contractor's cost. If the works cubes do not give the stipulated results, the Engineer reserves the right to ask the

Contractor to dismantle such portions of the work, which in his opinion are unacceptable and re-do the work to the

standard stipulated at his (Contractor's) cost. It shall be very clearly understood by the Contractor that no extra claims

shall be entertained by the Owner for excess use of cement over the minimum quantity stipulated to give the works

cubes of required strength. The unit rate for design and test cubes, works cubes, testing them as per specifications,

optional tests etc.

Unless otherwise stipulated, the concreting, testing, etc. shall be carried out as directed by the Engineer and to the

appropriate BIS Specifications. In the event of any work being suspected of faulty materials or workmanship or both,

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NA,GIDC,Por-ramangamdi

the Engineer before requiring its removal and reconstruction, may order, or the contractor may request, that it should

be load tested in accordance with the following provisions.

LOAD TEST ON MEMBERS OR ANY OTHER TEST:

The test load shall be 125 percent of the specified super imposed load for which the structure was designed in

addition to the full dead load (self weight of structure members plus weight of finishes and walls or partitions, if any

as considered in the design). Such test load shall not be applied before 28 days after the time of placing of concrete.

During the tests, struts strong enough to take the whole load shall be placed in position leaving a gap under the

members. The test load shall be kept for 24 hours before removal.

If within 24 hours of the removal of the load, the structure does not show a recovery of at least 75 percent of the

maximum deflection shown during the 24 hours under load, the test loading shall be repeated after a lapse of at least

72 hours. The structure shall be considered to have failed to pass the test if the recovery after the second test is not at

least 80 percent of the maximum deflection shown during the second test.

If during the test, or upon removal of the load, the structure shows signs of weakness, undue deflection or faulty

construction it shall be reconstructed or strengthened as necessary.

Any other test, e.g. taking out concrete cores, examination and test on such cores removed from such parts of the

members in an approved manner and as directed by the Engineer shall be carried out by the Contractor at his own

cost, if so directed.

TESTING CONCRETE OF TANKS FOR LEAKAGE:

In addition to the structural test given in clause above, structures (tanks, chests, pits, etc.) to be used for storage of

liquids shall also be tested for water tightness at full storage level as described below:

(a) In case of structure 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 over the

period of observation of seven days after allowing a seven days period for absorption after filling with water.

(b) In case of structures whose external faces are backfilled and are not accessible for inspection, such as

underground tanks, the tanks 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

hours over a period of 7 days. The total drop in surface level over a period of seven days shall be taken as an

indication of the water tightness of the tank. The Engineer shall decide on the actual permissible rate of this drop in

the surface level, taking into consideration whether the tanks are open or closed and the corresponding effect it has

on evaporation losses. Backfilling shall be withheld till the tanks are tested if directed by the Engineer

Costs of Tests:

The entire cost of tests as specified, in clause above shall be borne by the Contractor.

Unsatisfactory Test:

If the results of any test prove unsatisfactory, the Contractor shall remove and rebuild the member or members

involved or carry out such other remedial measures as may be required by the Engineer or his representative. The

Contractor shall bear the cost of so doing, unless the failure of the member or members to fulfil the test condition is

solely due to faulty design.

The procedure for placing of concrete shall be as follows:

Preparation before placing of concrete shall be as given below.

(i) Engineer's Approval of Equipment & Method:

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NA,GIDC,Por-ramangamdi

Before any concrete is placed, the entire placing programme, consisting of equipment, layout, proposed

procedure and methods shall be submitted to the Engineer for approval if so demanded by the Engineer and

no concrete shall be placed until the Engineer's approval has been received.

(ii) Hardened concrete and foreign materials should be removed from the inner surface of the conveying

(iii) Form work shall have been completed; snow, ice and water shall have been removed. Reinforcement shall

have been secured in place, expansion joint material, anchors and other embedded items shall have been

positioned and the entire preparation shall have been approved.

(iv) No concrete shall be placed on watered surface.

(v) Rain or Wash Water:

No concrete shall be placed in wet weather and any concrete that has been washed by heavy rains shall be

entirely removed, if there is any sign of cement and sand having been washed away from the concrete

mixtures. To guard against damage which may be caused by heavy rains, the works shall be covered with

gunny bags immediately after the concrete has been placed in position on the surface of the newly placed

concrete and shall be removed by approved means and no further concrete shall be placed thereon.

a. Time interval between mixing and placing:

Concrete shall be placed in the forms within 30 (thirty) minutes as rapidly as practicable, after addition of water

to cement and aggregate, unless otherwise authorised by the Engineer.

b. Concrete placing by manual labour:

Except when otherwise approved by the Engineer, concrete shall be placed in the shuttering by shovels or other

approved implements and shall not be dropped from a height or handled in a manner, which will cause

segregation. Accumulation of set concrete shall be avoided. Concrete shall be placed directly in its permanent

position and shall not be worked along the shuttering to that position.

c. Avoiding segregation:

Concrete shall, in all cases, be deposited as nearly as practicable directly in its final position, and shall not be

caused to flow in a manner, which will cause segregation, loss of materials and impair its strength. For locations

where direct placement is not possible, and in narrow forms, the Contractor shall provide suitable drop chutes

and "Elephant Trunks" to confine the concrete in movement.

d. Concrete placing by Mechanical Equipment:

The following specification shall apply where placing of concrete by use of mechanical equipment is

specifically called for while inviting bids or is warranted considering the nature of the work involved.

The control of placing shall begin at the mixer discharge. Concrete shall be discharged by the vertical drop into

the middle of the bucket or hopper and this principle of a vertical discharge of concrete shall be adhered to

throughout all stages of delivery until the concrete comes to rest in the structures.

e. Type of Buckets:

Central bottom dump buckets of a type that provides for positive regulation of the amount and rate of deposit of

concrete in all dumping positions shall be employed.

f. Operation of Bucket:

In placing concrete in large open areas, the bucket shall be spotted directly over the position designated and then

lowered for dumping. The open bucket shall just clear the concrete already in place and the height of drop shall

not exceed 1.00 M. The bucket shall be opened slowly to avoid high vertical bounce. Dumping of buckets on the

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

swing, or in any manner which results in segregation of ingredients or disturbances of previously placed

concrete will not be permitted.

g. Placement in Restricted Forms:

Concrete placed in restricted forms by borrows, buggies, cars, short chutes or hand shovelling shall be subject to

the requirement for vertical delivery of limited height to avoid segregation and shall be deposited as nearly as

practicable in its final position to avoid segregation due to rehandling or falling.

Where it is necessary to use transfer chutes between mixer, containers or hoppers, and point of deposit in the

forms, specific approval of the Engineer must be obtained as regards the type, length, slopes, baffles and vertical

terminals. Concrete shall not be permitted to fall from the end of the chutes or tube more than 1.00 M. Chutes,

when approved for use shall have slope not flatter than 1to3 and not steeper than 1to2.

i. Placing by Pumping:

Concrete may be conveyed and placed by mechanically operated pressure equipment only with the written

permission of the Engineer. Water cement ratio may not be increased above that for the same class of concrete

placed by bucket and the slump shall be held to the minimum necessary for conveying concrete by this method.

j. Bonding Mortar:

Immediately before concrete placement begins, prepared surfaces except formwork, which will be in contact

with the concrete to be placed, shall be covered with a bonding mortar as specified.

k. Thickness of Layers:

Concrete shall be placed in successive horizontal layers ranging in thickness from 15 to 90 mm. as directed by

the Engineer the bucket loads, or other units of deposit shall be potted progressively along the face of the layer

with such overlap as will facilitate spreading the layer to uniform depth and texture with a minimum of

shovelling. Any tendency to segregation shall be corrected by shovelling stones into mortar then mortar on the

stones. Such a condition shall be corrected by redesign of mix or other means, as directed by the Engineer.

l. Bedding of layers:

Bedding planes shall be approximately horizontal unless otherwise instructed.

Concrete shall be compacted with approved mechanical vibrating equipment until the concrete has been

consolidated to the maximum practicable density, and is free of pockets of coarse aggregate, and fits tightly

against all form surfaces and embedded materials.

TYPE OF VIBRATORS:

(i) Vibrators shall be the internal or immersion high frequency type, with speed of not less than 6000 revolutions

per minute when immersed in the concrete. Vibrators shall be used in sufficient number of units and power of

each unit shall be adequate to properly consolidate the concrete.

(ii) Use of Vibrators:

Vibrators shall be inserted in a vertical position at intervals of about 600 mm depending upon the mix; the

equipment used, and continued experience on the job. Vibrators shall be withdrawn slowly. In no case shall

vibrators be used to transport concrete inside the forms.

(iii) Successive Batches:

In placing concrete in layers, which are advancing horizontally as the work progresses, great care shall be

exercised to ensure adequate vibration, blending of the concrete between the succeeding batches.

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NA,GIDC,Por-ramangamdi

(iv) Vibrator Penetration of under layer:

The vibrator shall penetrate the layer being placed and also penetrate the layer below while under layer is still

plastic to ensure good bond and homogeneity between the two layers and prevent the formation of cold joints.

(v) Vibrating Against Reinforcement:

Care shall be taken to prevent contact of vibrators against reinforcement steel. Vibrators shall not be allowed to

come in contact with reinforcement steel after start of initial set. Vibrators shall not be allowed to come in

contact with forms of finished surface.

(vi) Use of form attached Vibrators:

The use of form attached Vibrators shall be used only with specific authorization of the Engineer.

(vii) Use of Surface Vibrators:

The use of surface vibrators will not be permitted under ordinary conditions. However, for thin slabs such as

highways, runways, and similar construction surface vibration by specially designed vibrators may be permitted,

upon the approval of the Engineer.

(viii) Stone pockets and Mortar Poundage’s:

The formation of stone pockets and mortar poundage in corners and against form face shall not be permitted. If

these occur, they shall be dug out, reformed and refilled to sufficient depth and shape for the rough blending, as

directed by Engineer.

CONSTRUCTION JOINTS AND KEYS:

Concrete shall be placed continuously unless otherwise specified.

If stopping of concreting becomes unavoidable anywhere, the construction joint shall be made, where the work is

stopped, concrete that is in the process of setting shall not be disturbed or shaken by traffic either on the concrete

itself or upon the shuttering. Horizontal and vertical construction joints and bonding keys shall be located and shall

conform in details to the requirements of the plans unless and otherwise directed by the Engineer. Where not

described, the joint shall be in accordance with the following:

(a) Column joint:

In a column, the joint shall be formed 75 mm. below his lowest soffit of the beams joining to it.

(b) Beam and Slab joint:

Concrete in a beam shall be placed throughout without a joint but, if the provision of a joint is unavoidable, the

joint shall be vertical and at the middle of the span. A joint in a slab shall be vertical and parallel to the

principal reinforcement. Where it is unavoidable, the joint at right angles to the principal reinforcement, shall

be vertical and at the middle of the span.

CURING, PROTECTING, REPAIRING AND FINISHING:

All concrete shall be cured by keeping it damp for the period of time required for complete hydration and hardening

Certain types of finish, or preparation for overlaying, concreting must be done at certain stages of the process and

special treatment may be required for specific concrete surface finish.

(i) Curing with water:

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NA,GIDC,Por-ramangamdi

Fresh concrete shall be kept continuously wet for a minimum period of at least 21 days since lapse of 24 hours

after laying concrete. Quantity of water supplied shall be controlled so as to prevent the erosion of freshly

placed concrete.

(ii) Continuous Spraying:

Curing shall be assured by use of an ample water supply under pressure in pipes, with all necessary appliances

of hose (sprinklers to be used), unless otherwise specified or approved by the Engineer.

(iii) Alternate Curing Methods:

Whenever, in the judgement of the Engineer, it may be necessary, the continuous spray method may be

omitted and a covering of sand, or other approved mulching such as wet gunny bags, which will prevent loss

of moisture from the concrete, may be used. No type of covering will be approved which should strain or

damage the concrete during or after curing period. Covering shall be kept continuously wet during the curing

(iv) Curing compounds:

Surface coating type-curing compounds shall be used only by special permission of and under the direction of

the Engineer. Curing compounds shall be colourless / pigmented, liquid type, conforming to approved

specifications. No curing compound shall be used on surfaces where future blending with concrete or painting

For curing of concrete in pavement, sidewalks, floors, flat roofs or other level surfaces, the ponding method of

curing is preferred. The method of containing the ponded water shall be approved by the Engineer. Special

attention shall be given to edges and corners of the slabs to ensure proper protection to these areas. The ponded

areas shall be kept continuously filled with water.

(vi) Curing Equipment:

All equipment and materials required for curing shall be on hand and ready for the use before concrete is

(vii) Protection of Fresh Concrete:

Fresh concrete shall be protected by leaving forms in place for an ample period as specified later in this

specification. Newly placed concrete shall be protected by approved means from rain, sun and winds. Steps as

approved by the Engineer shall also be taken to protect immature concrete from damage by debris, excessive

loading, vibration, abrasion or other materials etc. that may impair the strength and/or durability of the

concrete. Workmen shall be warned against and prevented from disturbing green concrete during its setting

period. If it is necessary that workmen enter the area of freshly placed concrete, the Engineer may require that

bridges be placed over the area.

(viii) Repair and Replacement of Unsatisfactory Concrete:

Immediately after the shuttering is removed, the surface of concrete shall be very carefully one over and holes

noticed shall be filled up and made good with mortar composed of one part of cement to one part of sand after

removing any loose stones adhering to the concrete. Concrete surfaces shall be finished as described under the

particular items of work. Superficial honeycombed surfaces shall be made good immediately after removal of

shuttering, in presence of Architect's representative and superficial water and air holes shall be filled in. Unless

otherwise instructed by the Engineer, the surface of the exposed concrete placed against shuttering shall be

rubbed down immediately on removal of shuttering to remove fins or other irregularities.

Unsatisfactory concrete shall be cut out and replaced with new concrete, as soon as practicable after removal

of forms. Anchors, tees, or dovetail slots shall be provided wherever necessary to attach the new material

Sign of contractor Chief officer

NA,GIDC,Por-ramangamdi

securely in place. Surface of prepared voids shall be wetted for 24 hours immediately before the patching

material is placed. Use of an epoxy for blending fresh concrete used for repairs will be permitted upon written

approval of the Engineer. Epoxies shall be applied in strict accordance with the instructions of the

FINISHING - GENERAL:

The specification is intended to cover the treatment of concrete surfaces of all structures. Area requiring special

finish not covered by this specification may be clearly indicated on the drawings and specifications will be furnished.

(a) Finish for Formed Surfaces:

The type of finish for formed concrete surfaces shall be as follows, unless otherwise specified by the Engineer:

(i) Cement plaster finish:

The concrete shall be properly roughened immediately after the shuttering is removed, taking care to remove

the laitance completely without disturbing concrete. The roughening shall be done by hacking. Before the

surface is plastered, it shall be cleaned and wetted so as to give good bond between concrete and plaster.

(ii) For surface against which backfill or concrete is to be placed, `no’ treatment is required except tie holes &

repair of defective areas shall be patched with cement mortar.

(iii) For surfaces below grade, which will receive waterproofing treatment, the concrete shall be free of surface

irregularities, which would interfere with proper application of the waterproofing material, which may be

specified for use.

(iv) Surfaces which will be exposed when the structure is in service shall receive no special finish except repair of

damaged or defective concrete, removal of fins and abrupt irregularities, filling of holes left by form ties and

rods, and clean up of loose or adhering debris.

Finishing of exposed concrete surface shall conform to the following.

Smooth form finish:

The form facing material shall produce a smooth, hard, uniform texture on the concrete; it may be plywood or

other approved material capable of producing the desired finish. All ties, burns and fins are to be removed.

Mix one part of Portland cement and one part fine sand with sufficient water to produce a stiff mortar. The

mortar after drying shall match the rest of the surface in colour. Before application of mortar, concrete surface

is to be dampened. Mortar is to be applied by firm rubber float or trowel, filling all surface voids. Compressing

mortar into voids by using carborundum stone shall be continued till uniform colour and texture is produced. If

the mortar surface dries too rapidly to permit proper compaction and finishing, apply a small amount of water

with a sprayer. Quoted rate of exposed shuttering shall be inclusive of this treatment.

(c) Finish for Unformed Surfaces:

Surfaces which will be exposed to the weather and which would normally be a specified level, a horizontal

surface or shows the slope required, the tops of narrow surfaces, such as stair treads, walls, curbs and parapets

shall be sloped approximately 10mm in 300mm width, broader surfaces such as walkways, roads, parking