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Tender Value
₹80 L
EMD Value
₹80,000
Closing Date
30 Apr 2026, 6:00 pmClosed
Similar tender results from the same govt authority in the past 3 years.
Dy.Minicipal Commissioner - West Zone
Desilting of drainage line work At Acher Gamtal Road, Parimal Hospital Road, Visat to Rathi Apartment Road, Visat to Tapovan Circle Road, Jawahar Chowk Circle to Sarvottam Nagar Road, Ramnagar Road and the surrounding areas by CCTV camera method in Sabarmati ward ,West Zone.
296589
9/25-26 (T.N.59)
Open
Civil Works - Others
Ahmedabad
4 documents required · 0 mandatory · 4 optional
₹2,400
Municipal Commissioner, Ahmedabad
₹80,000
14 Apr 2026
14 Apr 2026
14 Apr 2026
30 Apr 2026
14 Apr 2026
Name of Work : - Desilting of drainage line work At Acher Gamtal Road, Parimal Hospital
Road, Visat to Rathi Apartment Road, Visat to Tapovan Circle Road, Jawahar Chowk Circle
to Sarvottam Nagar Road, Ramnagar Road and the surrounding areas by CCTV camera
method in Sabarmati ward ,West Zone.
Item Rate in Amount (in
Item Description Quantity Unit
Temporary / Permanent Plugging for
blocking of sewer line, branch connections
1 and diversion of flows and removal of all
plugs by any means etc. comp. as directed
by Engineer In Charge of the work.
A 300 mm dia 25 No. 1250
B 400 to 550 mm dia 45 No. 1500
C 600 to700 mm dia 40 No. 2500
D 900 mm dia 20 No. 3600
E 1200 mm dia 10 No. 5000
Provide everything else required for
diversion of flow by pumping and / or by
passing and to maintain the sewerage
system functioning normal and managing
2 the flow without any sur-charging,
overflows etc during the De-silting/
rehabilitation works of the sewer line to
the satisfaction of the Engineer in charge
A 300 mm dia 500 RMT 100
B 400 to 550 mm dia 1890 RMT 150
C 600 to700 mm dia 500 RMT 250
D 900 mm dia 375 RMT 450
E 1200 mm dia 200 RMT 510
Loosen, de-silt and thoroughly clean and
remove debris and objects such as
boulders, bricks etc, bacteriological slimes,
roots, encrustations, grease, carbonated
deposits, etc from the sewer line including
disposal of silt / debris / malba / objects
etc, including solidification of
silt/malba/debris for disposal to the
dumping sites as per the direction of the
Engineer - in - charge.
( For Above 80% silted line) 100 % AS / 150 RMT 1230
( For 80% to 50 % Drainage silted line)
80 % AS / TENDER RATE
( For Less than 50% to 30 % Dr.silted line)
50 % AS/TENDER RATE
( For Above 80% silted line) 100 % AS / 320 RMT 1815
( For 80% to 50 % Drainage silted line)
80 % AS / TENDER RATE
( For Less than 50% to 30 % Dr.silted line)
50 % AS/TENDER RATE
( For Above 80% silted line) 100 % AS / 150 RMT 2460
( For 80% to 50 % Drainage silted line)
80 % AS / TENDER RATE
( For Less than 50% to 30 % Dr.silted line)
50 % AS/TENDER RATE
( For Above 80% silted line) 100 % AS / 75 RMT 3700
( For 80% to 50 % Drainage silted line)
80 % AS / TENDER RATE
( For Less than 50% to 30 % Dr.silted line)
50 % AS/TENDER RATE
( For Above 80% silted line) 100 % AS / 50 RMT 3700
( For 80% to 50 % Drainage silted line)
80 % AS / TENDER RATE
( For Less than 50% to 30 % Dr.silted line)
50 % AS/TENDER RATE
Survey to determine sewer alignment, levels,
M/H positions, including tracing of buried
manholes along alignment, proximity of
structures, measurement of exact length
between manholes & invert level, position and
detail of cross connections & submission of
drawings in total 2 Sets on A0 Size. Pre-
desilting as wellPost - desilting colour
CCTV/Photographic survey including pan and
Zoom inspection of laterals and defects and
submission of video tapes or CD inclusive of
colour photographs at every 10m interval
printed off video printer to the Engineer in
a. 300 mm dia 500 RMT 250
b. 400 to 550 mm dia 1890 RMT 250
c. 600 to700 mm dia 500 RMT 250
e. 900 mm dia 375 RMT 250
g. 1200 mm dia 200 RMT 250
Cutting of bituminous road of DBMand
Asphalt concrete of any thickness.
Brickwork using common burnt clay building
bricks having crushing strength not less than
35 kg/sq. cm in foundation and plinth in
cement mortar 1:5(icement : 5 coarse sand)
including racking out joints, curing, scaffolding
etc complete as directed for any height.
Raising buried manhole undereath road using
Brick masonarey with Bricks of Stremgth
KG/sq. Cm and cement mortorin 1:5 plaster
work in cement Mortar 1:4 and CC work Up to
new road level as per instruction of engineer
Providing And fixing fiber reinforced seat and
8 cover in line and CC 1:2:4 and finishing smooth 30 No. 2000
etc. Complete as directed Heavy Duty Type.
(in words also)
SealandSignatureoftheBidder Addl.CityEngineerDate:
TenderFeeRs.2400.00
EarnestMoneyRs.80,000.00
Contractor’sName&Address:
MEMORANDUMOFWORKINBRIEF
Desilting of drainage line work At Acher Gamtal
1. NameofWork Road, Parimal Hospital Road, Visat to Rathi
Apartment Road, Visat to Tapovan Circle Road,
Jawahar Chowk Circle to Sarvottam Nagar Road,
Ramnagar Road and the surrounding areas by
CCTV camera method in Sabarmati ward ,West
Rs.80,00,000.00(exclusiveofGST).GSTwillbepaidextraby
2. TenderEstimatedCost AMC/Authorityatprevailingratetothecontractor.
1% oftheTender Costintheform(Rs.80,000.00)
3. EarnestMoney (D.D./PayOrder/LocalMicrCheck/B.G.)
4 TenderFeeRs DemandDraftofRs.-2400.00
6. Time-Limit 12months
7. ValidityPeriod 120Days
8. Eligibility Criteria Register “D” class in PWD in Govt. R&B/CPWD/AMC or
equivalent registration with any other state Govt. or institutions.
(i)LastDateofSubmissionofthe
9. Tender Dt-30.04.2026upto18:00PM
(ii)ModeofSending a) In Sealed cover in duplicate copies by Registered Post
A.D,orbyCourier.orhanddelivery
b) Tendersentbyordinarypostwillberejectedoutright.
(iii)Descriptionessentialtobe a) Nameofwork,TenderNoticeNo.&TenderNo.
madeonsealedcover b) DateofreceivingtenderbyCorporations.
(iv)Modeofquotingrates in ThePricebidshallbesubmittedonlineonly.tshalln
ScheduleofQuantitiesandRates otbesubmittedPhysically.
10. DateofOpening Dt-01.05.2026upto15:00 PM
PlaceofSubmission&OpeningofT Submission of EMD. Tender fee and other Documents during officehours: On
11. ender Dt.01.05.2026 upto12:00hrsto Assistant Manager , 2nd Floor,
A.M.Office,Dr.RamanbhaiPatelBhavan,Usmanpura.Ahmedabad
MunicipalCorporation,W.Z.Office,Ahmedabad-380013.
(1) Rs.1000/- per day (for tenders amounting upto 10 Lakhs), (2)Rs.2500
per day (for tenders amounting above 10 Lakhs
12. PenaltyDuetoDelayofwork andupto30Lakhs),(3)Rs.5000perday(foralltendersamounting
above30Lakhs)butnotmorethen10%ofbill
13. DefectLiability Asper ‘B-1FormClose
Whenever a work is allotted by Engineering staff, whether minor ormajor of
Timepermittedtostartpartsofw part thereof of any amount, the contractor shall be
14. ork boundtostarttheworkswithin48hoursofintimationofwork.Communicationdonet
elephonicallyviaSMS,ViaWhatsappand
throughletter /E-mailshallbeconsidered legal and bindingforthe
same. Failure of comply to start the works in 48 hours of
intimationas above by contractor the contractor shall be levied
penalty of (1)Rs.1000/-perday
(fortendersamountingupto10Lakhs),(2)Rs.2500 per day (for tenders
amounting above 10 Lakhs and
upto30Lakhs),(3)Rs.5000perday(foralltendersamountingabove
30Lakhs).Threetimesfailuresbycontractorshallmakecontractorrespon
sibletobeblacklistedunlessandotherwisejustifiedproperly
inwriting/bindingwithin15daysoflastnoticeof
The staff of the contractor shall wear safety
jackets,hoes, helmets etc. while on duty and any violation
will attractfineofRs. 5,000/-foreach incident.
15. Safety Failuretoerectsafetysignageortryingtocarryouthewo
rkswithoutproperprecautions/safetymeasuresasequiredwill
attractafineofRs.5,000/-foreachincident.
16. Defect &Liability Period The contractor shall be responsible to make good and remedy
at his own expense any defect which may develop or may be
noticed before the period mentioned hereunder from the
certified date of completion, The within 15 days of receipt of
the notice. In the case of failure on the part of the contractor,
the Engineer-in-charge may rectify or remove or re-execute
the work at the risk & cost of the contractor. The Engineer-in-
charge shall be entitled to appropriate the whole or any part of
the amount of security deposit towards the expenses, if any,
Incurred by him in rectification, removal or re-execution. The
Defects Liability period shall be as under(a) for all works
costing upto Rs. 50,000 ( amount put to tender), the period
shall be 3 months from the certified date of completion.
(b) for all works costing more than Rs. 50,000 and upto Rs.
crore (amount put tender), the period shall be 6 months from
the certified date of completion or one monsoon, whichever is
(c) for major projects costing more than Rs. 1 crore, the period
shall be 12 months from the certified date of completion
which should include one monsoon.
(d) For building works, the period specified in (a), (b) or (c)
above OR elapse of monsoon period following the certified
date of completion, whichever is later. For the purpose of
deciding the monsoon period, the 30th September may be
treated as the last date.
17. Time permitted to start parts of work Whenever a work is allotted by Engineering staff, whether
minor or major of part thereof of any amount, the contractor
shall be bound to start the works within 48 hours of intimation
of work. Communication done telephonically via SMS, Via
Whatsapp and through letter / E-mail shall be considered legal
and binding for the same. Failure of comply to start the works
in 48 hours of intimation as above by contractor the contractor
shall be levied penalty of (1) Rs.1000/- per day (for tenders
amounting upto 10 Lakhs), (2) Rs.2500 per day (for tenders
amounting above 10 Lakhs and upto 30 Lakhs), (3) Rs.5000 per
day (for all tenders amounting above 30 Lakhs). Three times
failures by contractor shall make contractor responsible to be
black listed unless and otherwise justified properly in writing /
binding within 15 days of last notice of penalty.
18. Compensation for Delay 10% of Remaining work (As per Circular)
19. Addendum/Corrigendum Addendum/Corrigendum If any Shall be Published 48 Hrs. Price
To the Final Submission Time And Date. The Same Shall From a
part Of Tender AndThe Same As to be Attached Along WithThe
Tender Document.
20. EPF Act As per Acoount Department circular no-37 Date:09/08/2018
21. GST GST will be paid extra by AMC/Authority at prevailing rate to
the Contractor.
Contractor'sSigAdd.C.E.(West Zone)
Financedept. circular No-03 Dt.28-04-2023
(A) Guarantee issued by following banks will be accepted as SD/EMD on permanent basis.
All nationalizedBanks
(B) Guarantee issued by following banks will be accepted as SD/EMD for the period up to March -31,
The Validity cut-off date in the GR is with respect to the date of issue of bank Guarantee irrespective of the
date of termination of Bank Guarantee.
(I)Commercial Banks :-
1. A U Small Finance Bank
3. City Union Bank
4. DBS Bank India Limited
6. Equitas Small Finance Bank
7. Federal Bank
10. IndusInd Bank
11. Kotak Mahindra Bank
13. Standard Chartered Bank
14. Tamilnadu Mercantile Bank
15. Ujjivan Small Finance Bank
(II)Co-operative and Rural Banks OfGujarat :-
1. The Ahmedabad Mercantile Co-Operative Bank Ltd
2. The KalupurCommerical Co-operative Bank Ltd
3. Nutan nagrik Sahakari Bank Ltd
4. Rajkot nagrik Sahakari Bank Ltd
5. Saraswat Co-Operative Bank
6. Saurashtra Gramin Bank
7. The Gujarat State Co-Operative Bank
8. The Mehsana Urban Co-operative Bank Ltd
9. The Surat District Co-Operative Bank
10. The Surat Peoples Co-Operative Bank
Seal and Signature of the Bidder Add. City Engineer
AHMEDABAD MUNICIPAL CORPORATION
Invitation for Bid (IFB)
1. The AHMEDABAD MUNICIPAL CORPORATION,(hereinafter called “the Employer”) invites sealed
Tender document from reputed and qualified bidders for the construction of Works detailed in
the Table below:-
Sr. Name of Works Approximate Earnest Completion
No. value of works (Rs.) Money Period
1 Desilting of drainage line work At Rs.80,00,000/- Rs.80,000/- 12 Months
Acher Gamtal Road, Parimal
Hospital Road, Visat to Rathi
Apartment Road, Visat to
Tapovan Circle Road, Jawahar
Chowk Circle to Sarvottam Nagar
Road, Ramnagar Road and the
surrounding areas by CCTV
camera method in Sabarmati
ward ,West Zone.
2. Interested bidders shall download the tender documents from AMC’s website
www. amcnprocure.com/ www.nprocure.com.
3. Tender (a complete set of bidding document) fee shall be Rs.2400.00 in the form ofDemand
Draft / Pay Order from any Nationalised Bank in favour of MUNICIPALCOMMISSIONER,
AHMEDABAD, payable at Ahmedabad, which shall be non refundable.
4. All bids must be accompanied by Earnest Money Deposit of the amount specified for the Works
in the above Table payable at Ahmedabad and drawn in favour of MUNICIPAL COMMISSIONER,
AHMEDABAD, payable at Ahmedabad,. Earnest Money Deposit will have to be specified in
Clause 2 of Financial Condition.
5. Physical submission must be delivered ToAsst. Manager (Admin) ,2nd
Floor,Dr.Ramanbhai Patel Bhavan, Usmanpura, Ahmedabad Municipal Corporation, W.Z.
Office, Ahmedabad-380013.
6. The Bids will be opened at the office of Assistant Manager/ Dy.C.E. (W/Z) office) ,2nd
Floor,Dr.Ramanbhai Patel Bhavan, Usmanpura, Ahmedabad Municipal Corporation, W.Z.
Office, Ahmedabad-380013.
in the presence of bidders or their representatives who choose to attend. In the event of the
specified date of bid submission/opening being declared a holiday for the Employer, the bids
shall be received /opened on the next working day at the same place and the same time.
TERMS & CONDITIONS
( A) INSTRUCTIONS TO BIDDERS (ITB)
( B ) GENERAL TERMS & CONDITIONS
( C) FINACIAL TERMS & CONDITIONS
( D ) SAFETY/TECHNICAL SPECIFICATION/MAIN CONDITION
AHMEDABAD MUNICIPAL CORPORATION
TERMS & CONDITION
( A) INSTRUCTIONS TO BIDDERS (ITB)
1. Procedure for Submission of Tender
a). The Bidder should quote the price bid in tender form before schedule time Tender Document, tender
fee & EMD (Draft /DD) and all other enclosures as asked in tender.
b).The bidder shall submit the following Tender documents physically in hard copy in two separate
envelope (marked as “original” and other marked as “Duplicate”) in schedule time by RPAD/
Speed Post/ Hand Delivery in duplicate.The Bid envelopes shall be marked as follows:-
Tender Document
Registration certificate of class
c).The envelope shall be addressed to the Employer at the following address:
Asst. Manager (Admin)
2nd Floor,Dr.Ramanbhai Patel Bhavan,
Usmanpura, Ahmedabad Municipal Corporation,
W.Z. Office, Ahmedabad-380013
d).Bear the following identification:
“TO BE OPENED ONLY IN PRESENCE OF THE EVALUATION COMMITTEE”
e). Indicate the name and address of the bidder.
If the outer envelope is not sealed and marked as above, the Employer will assume no responsibility
for the misplacement or premature opening of the bid.
f).All information has to be typed or hand written legibly. All pages of the Bid have to be initialed by the
g) All The Bid Document Essentially Needs to be Properly binded/steppled
2. Assessment of Submission
2.1 The Employer will open the technical bid ofphysically submitted document of all the bids received
for the package (except those received late) containing the sealed Tender volume and other
enclosures then announce the names of bidders in the presence of bidders or their representatives
who choose to attend on the date and time mentioned in the NIT In the event of specified date of
bid opening being declared as a holiday for the Employer, the Tender will be opened at the
appointed time and location on the next working day.
2.2 In Physical submission, Bidders detailed and tender fee, E.M.D. shall be opened first. The Employer
at the opening will announce bidder’s names, , the presence/or absence of EMD, the amount and
validity of EMD furnished with each bid, is valid registration and such other details, as the Employer
may consider appropriate.
2.3 The Employer will determine whether the bid is accompanied by the required EMD.
2.4 If the EMD furnished does not conform to the amount and validity period as specified in the
Invitation for Bid and has not been furnished in the form, the bid shall be rejected by the Employer
as non-responsive and the Tender volume will be returned to the bidder.
2.5 Subject to confirmation of the EMD by the issuing bank, the Tender volume accompanied with
valid EMD will be taken up for further evaluation. In case, the Bank does not confirm the EMD, the
bid shall be rejected as non-responsive and no further evaluation carried out.
2.6 The tender volume will further be examined to determine whether the bid has been properly
signed, meets the eligibility and qualification criteria, has the required available bid capacity, is
accompanied by the requisite certificates, undertaking and other relevant information specified in
the bid documents and is substantially responsive to the requirement of the bidding documents
and provides any clarification for ascertaining the correctness of the information/details.
2.7 If the Tender volume is not substantially responsive, it will be rejected by the Employer and will not
subsequently be made responsive by correction or modification or withdrawal of the
nonconforming deviation or reservation.
3. Evaluation and Comparison of Tender volume
The Employer will evaluate and compare only those Tender volumes which are determined to be
substantially responsive in accordance with Clause 2and qualified for award of Contract in
accordance with Clause 5(General Terms and Condition).
4. Procedure for Tender Opening
Received copies of tender in physical form with in schedule time, will be open on schedule date and
time. In the event of specified date of bid opening being declared bidders who qualify the criteria
then bidder bid will be considered for opening of price bid.
5.1 The Employer will award the Contract to the bidder whose bid has been determined to be
substantially responsive to the bidding documents and who has offered the loSouthEvaluated Bid
Price, provided that such bidder has been determined to be (i) eligible in accordance with the
provisions of Clause 3(General Terms and Condition); and (ii) qualified in accordance with the
provisions of Clause 5(General Terms and Condition).
6. Notification of Award
6.1 Prior to expiration of the period of bid validity prescribed by the Employer, the Employer will notify
the successful bidder by cable/fax and confirmed by registered letter that his bid has been
accepted. This letter shall name the sum which the Employer will pay the Contractor in
consideration of the execution, completion and maintenance of the Works by the Contractor as
prescribed by the Contract.
6.2 The notification of award will constitute the formation of the Contract.
7.A successful Bidder has to deposit security deposit / Bank Guarantee as per Circular after receiving
letter of Indent. Time limit of work will commence from the date of issue of work order.
8. Clarification of Bids
8.1 To assist in the examination, evaluation and comparison of bids, the Employer may, at his
discretion, ask any bidder for authentication the correctness of the information/details furnished by
him in his bid. Such request by the Employer and the response by bidder shall be in writing or by
8.2 Subject to above clause, no bidders shall contact the Employer on any matter relating to his bid
from the time of bid opening to the time contract is awarded.
8.3 Any effort by the bidder to influence the Employer in the Employer’s bid evaluation, bid
comparison or contract award decisions may result in the rejection of his bid.
9.1 Information relating to the examination, clarification, evaluation and comparison of bids and
recommendations for the award of a contract shall not be disclosed to bidders or any other persons
not officially concerned with such process until the award to the successful bidder has been
announced. Any effort by a bidder to influence the Employer's processing of bids or award
decisions may result in the rejection of his bid.
10.1 The bidder is advised to visit and examine the Site of Works and its surroundings and obtain for
itself on its own responsibility all information that may be necessary for preparing the bid and
entering into a contract for construction of the Works. The costs of visiting the Site shall be at the
bidder’s own expense.
10.2 The bidder and any of its personnel or agents will be granted permission by the Employer to enter
its premises and lands for the purpose of such inspection, but only upon the express condition
that the bidder, its personnel and agents, will release and indemnify the Employer and its
personnel and agents from and against all liability in respect thereof and will be responsible for
death or personal injury, loss of or damage to property and any other loss, damage, costs and
expenses incurred as a result of the inspection.
11.0 Cheklist for submition of Technical Bid.
11.2 valid Registration Copy.
11.3Valid E.M.D
AHMEDABAD MUNICIPAL CORPORATION
TERMS & CONDITION
( B ) GENERAL TERMS & CONDITIONS
1. Scope of Bid
1.1 The Ahmedabad Municipal Corporation hereinafter called "the Employer" invites Tender document
for the construction of works (as defined in these documents, hereinafter referred to as "the Works")
detailed in the table given in the IFB.
1.2 The Works consist of: “as Above"
Source of Funds
1.1 The expenditure on these Works will be met by AHMEDABAD MUNICIPAL CORPORATION.
2.Bidder shall have completed
(i) one similar work costing 80% of the Package cost or more, OR
(ii) two similar work costing 50% of the package cost or more OR
(iii)Four similar work costing 25% of the package cost or more in
last Seven year.
3.Eligible Bidders
3.1Bidder Must own 2 number high capacity vaccum machine and 4 number silt carrying pay loader for
this tender .bidder should have owner ship of the machine.
3.2 Bidder Must own 1 number CCTV inspection system with indendentlyoperabale PTZ of own
3.3 Bidder shall have experience of 5 km of de-silting of sewer diameter 300 to 1800 mm or above in
India in last 5 years (ending on the date of opening of this bid) in any Municipal
Corporation or in any Government organization or any such body with satisfactory
certification of client.
3.4 This invitation for bids is open to bidders who has necessary bid capacity and who meet the
following requirements:
A bidder shall not be under a declaration of ineligibility for corrupt or fraudulent practice.
The bidders shall have a registration with State PWD, and/or CPWD for "D" class and or
equivalent. If contractor is not registered with AMC in the relevant class, on award of contract
he shall be required to register himself with AMC within 3 month's time.
Bidders shall provide such evidence of their continued eligibility satisfactory to the Employer, as the
Employer shall reasonably request.Subject to Submition of SuccsesfulSubmition as per Clause –II of
4. Eligible Material, Equipment and Services
4.1 At the Employer's request, the bidder having offered the loSouthevaluated financial bid may be
required to provide evidence of the origin of materials, equipment, and services to the satisfaction of
4.2 For purposes of Sub Clause 4.1, "origin" means the place where the materials are mined, grown,
produced or manufactured; similarly for equipments and from where the services are provided.
5. Qualification of the Bidder
To be qualified for award of Contract, bidders shall:
a) Submit a written power of attorney authorizing the signatory of the bid to commit thebidder; and
AH M ED A BA D M U N IC I PAL CO R PO RA T I O N
E NG I NE ER IN G D E P A RTM E N T
Name of Work :-"Desilting of drainage line work At Acher Gamtal Road,
Parimal Hospital Road, Visat to Rathi Apartment Road, Visat to Tapovan Circle
Road, Jawahar Chowk Circle to Sarvottam Nagar Road, Ramnagar Road and the
surrounding areas by CCTV camera method in Sabarmati ward ,West Zone.
Th e d et a i ls o f r e in f o r c e m ent o f R.C .C . w o r k sh al l b e as p er d es ig n a n d in s t r u c t io n s o f C it y
Th e con t r acto r s h all h a ve t o m a i n t a in a c co u n t o f st ee l , c e m e n t a n d oth e r m a te r i a l s t h at
m a y b e b r ou gh t b y h i m o n si t e . Th is ac co u n t s h al l b e r egu l a r l y m ai n t a i n e d an d k ep t op en
Mix i n g o f co n cr et e s h a ll b e d o n e b y con c r et e m i xe r m ach i n e . A rr an ge m e nts o f b i n d in g
vi b r at o r f o r R. C .C . w o r ks if r eq u i r ed s h a ll h a ve to b e m ad e b y t h e c o n tr a cto r .
Th e c o n t r a cto r sh a l l b e r e m a i n r es po n s ib l e f o r Wo r k m en ’ s c o mp e n s at i o n if a n y w h en su ch
c as e o c cu r s. T h e c on t r a ct o r sh a l l ar r a n g e f o r m e d a m p e r s an d in n ig h t an d he s h all b e
res p o ns ib l e f o r a n y d am a g e o f l if e a n d l i m b o r p ro p er t y i f an y h ap p en , d u r in g th e e xe cu t io n
of w o r k. In c as e o f d is p ut e f o r u n s e en o r o v er l o o k e d i te ms t h e dec is i o n of t h e c i t y
co n t r ac tor at t h is r i s k a n d c o st .
Fo r mi x in g mo r t ar ei th er f or m a s o nr y o r f o r p l ast er o r f o r a n y o t h e r p u r p os e c o n tr ac to r
In o n cas e h e s h a ll b e a l l o w ed to mi x t he m o r t a r ei t h e r o n f l o o r o r an y f i n i she d s u rf a c es.
sh a ll p ay th e w a t er ch ar ges as p er w a t er m et er .
If an y e x t r a it e m c r op s u p d u r i n g t h e p r o g re s s o f w o r k t h e s a m e sh a l l b e c a rr ied o u t b y t h e
co n t r ac tor a nd he sh a l l b e p ai d at t h e r at e f ix e d b y C . E. / Ad d l. C i t y En gi n e er as p er th e r at e
an al ys is b as ed o n cu r r e n t m ar ket r at es .
If in t h e i nt er est o f t h e C o r p o r a ti o n i t i s n e ces s ar y t o ch an g e ei th e r an y s it e o r t h e d es i gn
th e r a te q u o t ed b y hi m an d n o c l a i m f o r e x t r a f o r su b s e qu en t c h an ges m a y b e en t e r t a in ed .
Th e c u b i c a l c o n t en ts o f t h e c e men t b a g sh al l b e t a k e n as 1 - 2 0 cf t. Pe r b ag a n d t h e
co n t r ac tor s s h a l l h a ve t o p r e p a re t h e m e asu r es b o x es a cc o rd i n g t o t h is m e asu r e .
or w h en te ch n ic a l r eq u i r e m ent s ar e su c h t h a t c o n ti n u i t y o f w o r k sh o ul d b e m ai n t a in e d a nd
co n t r ac tor an d w h ich wi ll b e p a i d a t t h e ti m e o f f i n al b i l l.
C on t r ac t or w il l b e f ul l y res p on s i ble f o r c om p l i a nc e of t he v ar i ous pre vi si on und er c on t r a ct
Th e t en d er f o r t h e w o r k s h a ll r e m ain op en f o r a pe r i o d ( 1 20 ) d a ys f ro m t h e d a t e o f o p en in g
th e Mu n i c ip al C o rp o r at i on , th e Mu n i cip al C o r po r at io n sh a l l w it h o u t p r ej u d i c e to a n y r igh t
or r e m e d y b e a t l i b er t y to f o rf ei t in f u l l t h e s aid e a r n es t m o n e y a b s ol u t el y .
As p er C i r cu l ar N o. MC R 2 1 7 6 ( 9 6 ) 2 4 1 8 ( i i) G H H d at ed 3 1 - 0 3 - 7 7 is s ued b y G o ve rn m en t o f
Gu j ar at c o n tr a ct ors ar e r e qu es t e d t o p r o du c e t h ei r q u a r r y m a ter i a ls f o r c o n s tr u c t i o n w o r k
app l i c a bl e as p er A MC R u les .
Co n tr acto r h as t o m a ke hi s o w n a r r a n g e m en t f o r p ro c ur e m en t o f s t ee l a n d c e me n t .
iii ) In cas e o f t e nd er d o w n l o ad e d f r o m w eb si t e , t e nd er f e e & E M D s h o u l d be su bm i tt ed
iv) Co n d it i on o f f o r m B 1 St a nd ar d Sp ec if i ca t io n of m at er i a l & co d e o f p r a ct ic e w ill b e
app l i c ab le .F o r m B1 & B 2 c an b e is a va i lab l e in web s it e. C on d it io n o f F o r m B -1 F or
D ef ec t l iab i li ty C lau s e is n ot app li c ab l e Fo r t hi s Wo r k .
for B u i l di n g W or k s book a v a i l a bl e from Gujar at Book Stores (Pvt.) Ltd. Sector-
21,Gandhinagar,D E T A IL E D G E N E R A L T E C H N I C A L S P E C IF I C A T I O N S can b e av ai l a b l e f r o m
Co n t r a ct o r ’s S i gn a t ur e Ad d . C it y En g in eer
General information
All individual firms must complete the information in this form. Nationality information shall be
provided for all owner(s) or applicant(s) that are partnership or individually owned firms.
1 Name of firm:
2 Head office address With Contact no.:
3 Local office address (if any) With Contact no.:
4 Telephone/ Contact With name :
5 E-mail address:
6 Place of incorporation/registration:
7 Year of incorporation/registration:
Additional information regardinglitigation, debarment, arbitration, etc.
AuthorisedSigneture Bidder
5.3 Disqualification
Even though the Bidders may meet the above criteria, they are subject to be disqualified for any of the
following reasons:
a) Misleading or false representation in the forms, statements and attachments submitted and included
b) Record of poor performance such as abandoning the work, rescinding of contract for which the
reasons are attributable to the non-performance of the contractor, consistent history of litigation
awarded against the applicant or financial failure due to bankruptcy.
c) Has been identified by the Employer as poor performer in implementation of ongoing AMC works.
d) The bidder fill (tender) in percentage rate above or below and total amount (both in figures and
d) The bidder fill (tender) in percentage rate above or below and total amount (both in figures and
words) only in E-Tender (Online) Not to fill in hard copy of Tender documents
5.4 Debarment/Black listing
Notwithstanding the above, the Employer may debar or blacklist any of the bidder(s) for their
misleading or false representations in the forms statements etc. for the period to be decided by the
6. One Bid per Bidder
6.1 Each bidder shall submit only one bid per contract package either by himself or as a partner in a
joint venture. A bidder who submits or participates in more than one bid for a contract package will be
7. Bidding Documents
The bidder is expected to examine carefully the contents of all the above bid documents. Failures to
comply with the requirements of bid documents will be at the bidder's own risk. Pursuant to Clause
bids which are not substantially responsive to the requirements of the bidding documents will be
8. Language of Bid
The bid, and all correspondence and documents related to the bid exchanged between the bidder and
the Employer shall be written in the English language. Supporting documents and printed literature
furnished by the bidder may be in another language provided they are accompanied by an accurate
translation of the relevant passages in the English language, in which case, for purposes of
interpretation of the bid, the English translation shall prevail.
9.1. Unless stated otherwise in the bidding documents, the Contract shall be for the whole works as
described in bidding documents, based on the percentage rate amount in the Bill of Quantities
submitted online by the bidder.
9.2. The bidder shall fill (tender) in percentage rate above or below and total amount (both in figures
9.2. The bidder shall fill (tender) in percentage rate above or below and total amount (both in figures
and words) for overall items of the Works provided in the Bill of Quantities
10. Bid Validity
10.1 Bids shall remain valid as per Instruction to Bidders (ITB) after that deadline date for bid
submission specified in Clause. The Employer as non-responsive shall reject a bid valid for a
shorter period.
10.2 In exceptional circumstances, prior to expiry of the original bid validity period, the Employer may
request the bidders to extend the period of validity for a specified additional period. The request
and the responses thereto shall be made in writing or by fax. A bidder may refuse the request
without forfeiting his bidder agreeing to the request will not be required or permitted to modify
his bid but will be required to extend the validity of his Bid Security for the period of the
extension, and in compliance with Clause 2 ( Financial Terms & Conditions) in all respects.
11. Format and Signing of Bid
11.1 The bidder shall prepare two copies of the documents comprising the bid as described in
Instructions to Bidders.
11.2 The bid shall be typed or written in indelible ink and shall be signed by a person or persons duly
authorized to sign on behalf of the bidder.
11.3 The bid shall contain no alterations, omissions or additions, except those to comply with
instructions issued by the Employer, or as necessary to correct errors made by the bidder, in
which case the person or persons signing the bid shall initial all such corrections.
11.4 All witnesses and sureties shall be persons of status and probity and their full names,
Occupations and addresses shall be printed below their signatures.
12. Deadline for Submission of Bids
Bids must be received by the Employer at the address specified above not later than the time and date
specified in the NIT.
Any bid received by the Employer after the deadline for submission of bids will be returned unopened
14. Signing of Agreement
At the same time that the Employer notifies the successful bidder that his bid has been accepted, the
Employer will direct him to submit the Performance Security and attend the Employer's office on a date
determined by the Employer for signing the Form of Agreement.
15. The selection process will lay high emphasis on the ability and competency of contractors to do high
quality work within the given time schedule.
16. The onus of providing, all necessary company / project related information, in appropriate manner
and medium, so as to demonstrate the competency of the bidder and to allow proper evaluation, will
rest entirely on the Bidder.
17. All clause shall be operative from the date of issue of work order and up to the expiry of original and
extended time limit.
18. Legal Condition:-
Corrupt or Fraudulent Practices
The Employer will reject a proposal for award if he determines that the Bidder recommended for
award has engaged in corrupt or fraudulent practices in competing for the contract in question. The
Employer will declare the firm ineligible, either indefinitely or for a stated period of time, to be
awarded a contract by AHMEDABAD MUNICIPAL CORPORATION if it at any time determines that
the firm has engaged in corrupt or fraudulent practices in competing for the contract, or during
“corrupt practice” means behavior on the part of officials in the public or private sectors by
which they improperly and unlawfully enrich themselves and/or those close to them, or induce
others to do so, by misusing the position in which they are placed, and it includes the offering,
giving, receiving, or soliciting of anything of value to influence the action of any such official in
the procurement process or in contract execution; and
“fraudulent practice” means a misrepresentation of facts in order to influence a Procurement
process or the execution of a contract to the detriment of the Borrower, and includes collusive
practice among bidders (prior to or after bid submission) designed to establish bid prices at
artificial non-competitive levels and to deprive the Borrower of the benefits of free and open
Municipal Commissioner reserves the rights to reduce/increase the scope of work and contract
without assigning any reason thereof.
If Ahmedabad Municipal Corporation is convinced that the Bidder has resorted to material
misrepresentation or provided fraudulent information / statement, the said Bidder will be liable for
disqualification / rejection at any stage.
Proof for fulfillment of eligibility criteria should be submitted along with Tender volume. If the
Tender volume is submitted without valid documents and without proof of eligibility criteria it will
Those who do not meet with the eligibility criteria need not submit the Tender document.
Tenders, which do not fulfill all or any of condition or are submitted incomplete in any respect or
are conditional tenders, will be rejected.
Contractor shall be responsible to obey all Labour Laws, Environmental and Safety Laws.(the
existing laws as well as framed from time to time). Any penalties laid due to violation of such laws
shall be directly deducted from the contractor's outstanding.
19. Administrative Conditions:-
Safety and Signage
Contractor has to arrange for the complete safety of the persons working for project, users of the
road i.e. public and vehicles also. All the arrangements of traffic drums, metal / fiber cones, traffic
blinkers, traffic signs as per design, safety tapes etc. to be arranged at site. Necessary florescent
marking on traffic signs to be provided so that it should be visible at night. During night working
hours safety in charge personnel shall be provided with florescent jackets. This shall be Provided at
no extra cost by the bidder under attaché with specified in the tender documents under payable
Liaison with local authority for electrical connections for the AMC
The contractor is responsible for liaison with local authority for change in supply connection or new
connection on behalf of AMC. It includes filling the necessary application to power Supply
Company, follow up and getting the supply, filling the necessary test reports to the power supply
company. All official fees including security deposits and other expenses shall be of initially paid by
the contractor. AMC may support to get the temporary connection and may at its diseretien get
the same converted to permanent connection at the same of AMC if desired do,and contractor
shall as no extra cost support the same. In this case AMC my be as the remaining cost subject to
20 :- CONTINGENT FEE:
The Contractor warrants that he has not employed any person to solicit or secure the contract
upon any agreement for a commission, percentage, brokerage or contingent fee. Breach of this
warranty shall give the Municipal Commissioner the right to cancel the contract or to take any
other measure as the Municipal Commissioner may deem fit. The warranty does not apply to
commissions payable by the contractor to establish commercial or selling agent for the purpose
of securing business.
No officer, employer of the Municipal Corporation be admitted to any share or part of this
contract or to any benefit that may rise there from.
21:-OVERPAYMENT AND UNDERPAYMENT:
Whenever any claim fourths payment of a sum to the Municipal Corporation arises out of or
under this Contract against the contractor the same may be deducted by the Municipal
Corporation from any sum then due or which at any time thereafter may become due to the
contractor under this contract and failing that under any other contract with the Municipal
Corporation or from any sum due to the contractor with the Municipal Corporation (which may be
available with Municipal Corporation), or from his retention money, or he shall pay the claim on
demand. The Municipal Corporation reserves the right to carry out post payment audit and
technical examination of the final bill including all supporting vouchers, abstracts, etc.
The Municipal Corporation further reserves the right to enforce recovery of any over payment
when detected not withstanding the fact that the amount of the final bill may be included by the
If as a result of such audit and technical examination any over payment is discovered in respect of
any work done by the Contractor or alleged to have been done by him under the contract, it shall
be recovered by the Municipal Corporation from the contractor by way of all the means
prescribed above or if any under payment is discovered by the Municipal Corporation, any
amount due to the contractor under this contract or under payment may be adjusted against any
amount then due or which may at any time thereafter become due before payment is made to
the contractor from him to the Municipal Corporation on any other contract account whatsoever.
If, at any time, there should be evidence of any lien or claim for which owner might have become
liable and which is chargeable to the contractor, the owner shall have the right to retain out of
any payment then due or thereafter to become due an amount sufficient to completely
indemnify the owner against such lien or claim or if such lien or claim be valid the owner may be
or become due and payable to the contractor. If any lien or claims remaining, unsettled after all
payments are made, the contractor shall refund or pay to the owner all money that the latter may
be compelled to pay in discharging such lien or claim including all cost and reasonable expenses.
Contractor shall not sub-let the work without permission of the authority.
Joint venture and subcontracting shall not be allowed under this tender
Addendum or corrigendum conveying any change or correction in respect of the work shall form the
part of the contract documents. The full consideration shall be given to such addendum or corrigendum
before submission of tender duly filled in by the contractor. Therefore, the contractors shall have to
kindly refer the tender for such addendum or corrigendum published by AMC through its website
www.amc.nprocure.com&www.nprocure.com 48 hours prior to the deadline of submission of the
tender. Tenderers shall verify the number of addendum issued and enclose the same with the tender
documents , failing which the tenders shall be liable for rejection and no any complaint in respect to
this shall be entertained under any circumstances.
Seal and Signature of the Bidder Addl.City Engineer
Date: (West Zone)
AHMEDABAD MUNICIPAL CORPORATION
TERMS & CONDITION
( C ) FINACIAL CONDITION
1. Cost and Currencies of Bidding
The bidder shall bear all costs associated with the preparation and submission of his bid and the
Employer will in no case be responsible or liable for those costs.
Currencies of Bid and Payment
The rates and the prices shall be quoted by the bidder entirely in Indian Rupees
All payments including advances, if any, shall be made in Indian Rupees.
2.Earnest Money Deposit :-
2.1 Bank guarantees (and other instruments having fixed validity) issued as surety for the bid shall be
valid for 28 days beyond the validity of the bid.
2.2 The EMD of the unsuccessful bidders, except for L1,L2 and L3 bidders, will be returned as promptly
as Early as possible as but not later than 28 days after the expiration of the period of bid validity.
2.3 The EMD of the successful bidder, along with second and third loSouthtenders, will be returned
when the bidder has furnished the required performance security and signedthe agreement.
2.4 Earnest Money Deposit may be forfeited
a) if the bidder withdraws his bid during the period of bid validity;
b) in the case of a successful bidder, if the bidder fails within the specified time limit to
i) Furnish the required Performance Security or
ii) Sign the Agreement.
3.(A) SecurityDeposit :-
Within 15 (fifteen) Working days of the date of receipt of the Letter of Intent (LOI) the successful
bidder shall deliver to the Employer, a Initial Security Deposit Shall be submitted as per C.E.
Circular.in the form of a Bank Guarantee/ DD/Locle MICR cheque for an amount equivalent to 5%
(five percent) of the Contract Price .
Failure of the same shall make the contractor liable for any penalty as decided by AMC. At
present a policy is framed by Audit department of AMC to charge 4% interest for the balance
period and discontinuity period.
The Security Deposit to be provided by the successful bidder in the form of a bank guarantee as
per format shall be issued as per Memorendum of work.
(E) Retention :-
a). Retention @ 2% of the value of work done will be deducted from each RA bill. It will be released
along with release of payment of Final Bill.
4. Approved Bank: - As per Annexer -I
5. No advance for machinery or materials will be given.
6. Mobilization advance will not be given.
7. Quantities in B.O.Q. may vary up to any extent and contractor shall not claim any extra rate for the
8. Penalty: -10 percent of the balance work on Date of Completion Date or extended time limit. &
As per AMC Rule
9.Tax, Duties on Materials
All charge on account of Octroi ,excise duties, terminal tax, sales tax. Service tax, VAT (exculding
GST) etc. on material procurement or any other component for the works from any source shall be
borne by the contractors.
Special Clause:
As per construction works welfare cess Act – 1996 non-refundable one percent of tender amount shall
be deducted against works welfare cess.
Seal and Signature of the Bidder Addl.City Engineer
Date: (West Zone)
General terms & conditions
1. Tenderer should be registered in PWD/ in Govt. R&B /CPWD / AMC or equivalent registration with any
other state Govt. or institutions. Copy of registration should be attached with tender document.
Tenderer who was not registred in AMC must be get registred in panel of approved AMC contractor.
2. A booklet of FORM B-1 of Gujarat State Roads & Building Department / Water Resources Department
with the correction slips made up to 15-08-1999 may be referred. (only English version) Clause No. -2
liquidated damages for delay shall be overrule by A.M.C.’s M.C.circular no.- 9 dt. 18/05/2012.
3. In the specification “as directed" / "approved" shall be taken to mean "as directed / "approved" by the
Engineering in charge.
4. Wherever a reference to any Indian standard appears in the specifications, it shall be taken to mean as
reference to the latest edition of the same of force on the date of agreement.
5. In "Mode of measurement" in the specifications wherever a dispute arises in the absence of specific
mention for a particulars point / aspect, the same in the relevant Indian Standards shall be referred to.
6. All measurement and computations, unless otherwise specified shall be carried out nearest to
the following limits :-
i) Length, width and depth, Height 0.01 Meter
ii) Areas 0.01 Sq.mts.
iii) Cubic contents 0.01 Cu. mts.
In recording dimensions of work, the sequence of length, width and height (Depth) or thickness shall be
7. Definite particulars covered in the items of work, though not mentioned or elucidate in its
specifications shall be deemed to be included therein.
8. Approval of the samples of various materials given by the Engineer in charge or AMC's Consultant shall
not absolve the contractor from the responsibility of replacing defective materials brought on site or
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
9. The contractor’s rate for the item of work shall be for the work completed in all respect.
10. All materials including those of electrical shall be got approved by the Engineer in charge/ Architect
before using them in the work.
11. Materials as and when rejected by the Engineer in charge or AMC's Consultant shall be removed from
the site of work within 24 hours.
12. All work shall be carried out in a manner as per standard engineering practice.
13. All tools, templates, machinery and equipment for correct execution of the work as well as for checking
lines, levels, alignment of the works & all precautionary measures during execution shall have to be
kept in sufficient numbers and in good working condition at the site of the work. All excavated trench
shall be kept covered with barricade and caution tap.
14. Special modes of the construction not adopted in general Engineering practice, if proposed to be
adopted by the contractor shall be considered only if the contractor provided satisfactory evidence that
such special mode of construction and completion of work to the required strength and quality.
Acceptance of the same by the Engineer in charge shall not however, absolve the contractor from the
responsibility of any adverse effect and concordance of adopting the same in the course of exaction or
completion of the work.
15. The contractor shall be responsible for observing the rules and regulation imposed under the "Minor
Mineral Act", and such other laws and rules prescribed by the Government from time to time.
16. All necessary safety measures and precautions (incl. those laid down in the various relevant Indian
Standard) shall be taken to engrave the safety of men, materials and machinery on the work and also of
the work itself.
17. Quantity measured in the tender is approximate. It may increase or decrease looking to the quantum of
actual work for which no any claim shall be entertained by A.M.C.
18. Contractor shall have to execute extra item if required or as per need of AMC.
19. The work in general shall be carried out as per standard specifications of the relevant items to be
executed & as per the instruction of Engineer in charge & as per the guidance of AMC's Consultant for
20. The general terms & conditions of the contract shall be applicable & shall be binding on the contractor.
The contract agreement shall have to be executed between AMC & the agency to which work is
awarded for execution.
21. For Tender amounting below 10 lakh LOI shall be issues within 3 days after received of sanctioned
tender and resolution.Within 10 days contractor has to submit SD and after reciveing SD Work order
shall be issue to contractor and the time limit shall be start from the date of issue of the written work
order to the contractor.
For Tender amounting above 10 lakh LOI shall be issues within 3 days after received of sanctioned
tender and resolution .Within 15 days contractor has to submit SD and after reciveing SD work order
shall be issue to contractor and the time limit shall be start from the date of issue of the written work
order to the contractor.
Security Deposit of 5% of sanctioned tender amount shall be deposited by pay order / demand
draft / cheque or Bank Guarntee of nationalized bank/scheduled bank only. Contractor shall have to
sign contract paper with AMC.The contractor shall be fined 4% of interest per year for delay in
submission of S.D and shall be deducted from contractor’s bill.
22. In case of any ambiguity in specifications mentioned in this tender, the interpretation given by M.C. Or
His DesignetedOfficerwill be final and binding to the Contractor.
23. The contractor shall take no advantage of any apparent error or omission in drawing or specification
and the Engineer -in-charge shall make such corrections and interpretations as necessary to fulfill the
intent of the plants and specifications.
24. The quantities of items in BOQ (Bill of Quantities) may vary in case of necessity arises.
25. All prevailing taxes/duties chargeable by State Govt./Central Govt. and the Municipal Corporation. will
be payable by the contractor.
26. No any kind of price rise / price escalation / price variation for cement, steel or labour shall be paid.
27. Contractor is requested to see the site physically before tendering. He is also requested to quote the
rates keeping in view of all the points mentioned in relevant pages of tender documents.
28. Water Supply: The contractor shall arrange at his own cost, a suitable supply of piped water for the
construction of the works and provide a satisfactory supply of potable water for drinking, washing,
sanitation and cleaning down. The contractor will be responsible for all the costs where applicable of
connection, meter installation, water consumed, water required for testing purposes, disconnection
and the laying, maintenances and ultimate removal of any distribution system around the site.
29. Electricity:Electric supply will be made available at the site by the Contractor and the contractor must
make his own arrangements with the Corporation and Electricity Supply Authorities and with other
contractors to connect and to take a supply from such services, paying all costs in connection
The Contractor shall be entitled to use supply Electricity as may be available on the site for purpose of
the work and shall pay such charges as is fixed by the appropriate supply Authorities.
In case there is any delay in supply of power site of any interruption or fault in the power during the
work. No compensation shall be paid for idle labor staff, machineries and for use of diesel operating
sets etc. as the case may be.
30. Tenders shall submit all the valid/certified documents in support of their initial/eligibility criteria
mentioned above along with the bid. They shall have also to submit the income tax clearance certificate
and solvency certificate.
31. No advance such as secured advance machinery advance, mobilization advance or materials advance
32. The contractor shall get the electrical works executed through the authorized Government approved
licensed electrical person or firm in appropriate category in accordance to contractual provisions.
33. The electrical works shall be carried out strictly in accordance with the directives issued by Engineer in
34. Contractors shall not have any dispute or claim for any kind of compensations
(i) If the quantity stipulated in the tender items varies or the scope of work changes & thereby total
amount of work increases/ decreases.
(ii) If the work gets delayed/ postponed for some administrative/ technical decision what so ever.
35. In case of any dispute, decision of Municipal Commissioner shall be final and binding on the
36. Tenders which do not fulfill all or any of conditions or are submitted incomplete in any respect will be
rejected. Municipal Commissioner reserves the right to increase/decrease the scope of work. No any
claim to that effect shall be entertained. The Municipal Commissioner also reserves the right to reject
any or all the tenders without assigning any reason thereof.
37. The contractors are requested to quote their rates considering above tender conditions.
38. The contractor shall have to execute the contract agreement after received work order.
Even though in special case, If work is not started because of monsoon or any other special
reason (like site is not available and due to unavoidable circumstances arise), after evaluation of
situation the actual date of starting of work will be consider after approval of Dy.M.C. (Southzone)
39. The Contractor shall not claim for increase or decrease in the quantity of the BOQ item or the scope of
40. The R.A bill / final bill payment shall be made as per the latest A.M.C policy / circular for the work done
by the contractor.
41. Conditional tenders will not be accepted.
Signature of contractor with seal Additional City Engineer (West Zone)
Date Ahmadabad Municipal Corporation
AHMEDABAD MUNICIPAL CORPORATION
ENGGNIERING DEPARTMENT
GENERAL SPECIFICATION
Time limit for the work shall be 12 monthsafter the order to start the works. Progress of work should
be in proportion to time limit. The details of reinforcement of R.C.C. work shall be as per design and
instructions of Add. City Engineer and his order will be considered final.
The contractor shall have to maintain account of steel, cement and other materials that may
be brought by him on site. This account shall be regularly maintained and kept open for inspection by
Municipal Staff. Watering of all the items shall be as per instructions otherwise no payment shall be
made to contractors. Mixing of concrete shall be done by concrete mixer machine. Arrangements of
binding vibrator for R.C.C. works if required shall have to be made by the contractor.
The contractor shall be remain responsible for Workmen’s compensation if any accident. The
contractor shall arrange for barricading at night and arrangement of Pagi at night to direct the traffic.
He shall be responsible for any damage to public. If any incident happen, during the execution of work.
In case of dispute for unseen or overlooked items the decision of the Dy. City Engineer shall be final.
The contractor shall have to give site clean of all rubbish during the work and at the time of completion
of work and hand over the site with final finishing of the work as directed. All the rejected materials
shall be removed from site within 24 hours by contractor at this risk and cost. Debris shall have to cart
daily from site.
For mixing mortar either for masonry or for plaster or for any other purpose contractor
shall have to prepare through of bigger size and mix the mortar in the required proportion. In
oncase he shall be allowed to mix the mortar either on floor or any finished surfaces. The
contractor shall have to make his own arrangement for water required for the work.
If any extra item crops up during the progress of work the same shall be carried out by the contractor
and he shall be paid at the rate fixed by Add.C.E. as per the rate analysis based on latest SOR or if item
is not available in SOR than based on current market rates. In case of extra item decision of Add. City
Engg. shall remain final regarding rate.
If in the interest of the Corporation it is necessary to change either any site or the design of the
propose work the contractor shall carry out the same at his quoted rates without charges any extra
and the contractor will have to carry out the works and he will be paid at the rate quoted by him. No
claim for extra rate for subsequent changes in site and design is entertained.
The cubical contents of the cement bag shall be taken as 1-20 cft. Per bag and the contractors shall
have to prepare the measures boxes according to this measure.
Octroi exemption passes shall not be given for any materials required for the work. Contractor will be
fully responsible for compliance of the various provisions under contract Act. 1970 and the Rules
framed the to under.
The tender for the work shall remain open for a period (180) days from the date of opening of the
tenders for this work and that the tenderer shall not be allowed to withdraw on modify the offer on his
own during the period. If any tenderer withdraw or makes any modifications or addition in the terms
and conditions of his tender not acceptable to the Municipal Corporation the Municipal Corporation
shall without prejudice to any right or remedy be at liberty to forfeit in full the said earnest money and
black list the contractor.
If work is not started within specified time limit the penalty as per rule & tender condition delay of
start shall be recovered separately from the immediate bills payable to the contractor. Contractor has
to make his own arrangement for procurement of steel and cement.
Contractors should note the following conditions carefully:-
i) Conditional tender shall not be accepted.
ii) All tenders are to be submitted in duplicate without which the tenders are liable to be
iii) In case of tender downloaded from website, tender fee & EMD should be submitted in form of
iv) Condition of Form - B1 Standard Specification of material & code of practice will be applicable.
Form B1 can be is available in website. Specification shall be as per ' R& B Dept. - Govt. of
Gujarat booklets of Building Works & and Road Works Specifications published by Gujarat
Book Depot, Sector-21. Gandhinagar.
v) All the works Should be done as per specifications specified in Table. Item shall be executed
AS PER SITE REQUIREMENTS AND CONDITIONS AND INSTRUCTIONS GIVEN BY ENGG-
IN CHARGE. All the Specifications should be considered as R & B S.O.R & All Electrical Item
works should be done as specified in table. The works should be done as per Instruction of
Engineer In Charge. All the Specifications related to electrical works should be considered as
Per R & B Electrical S.O.R. The Make and Work Metholody of All of the above items specified
in above tender Will be the Final Decision of Engineer In Charge OrAdditonal City Engineer.
vi) Important Note:-
As well as Considered Item Specifications as Per Item Given, not by serial number, the specifications of
items which are not mentioned in BOQ Item, Specifications should be considered as per AMC
Sor Current Approved Rates for Civil and Electrical Works, as per Available on Site of
Ahmedabadcity.gov.in All the Specifications should be Considered as per Schedules Rates of R
& B Division of both civil and Electrical Works. Hence it an ARC Tender All the Quantity Would
Vary as per Instruction of Engineer in Charge. No Rate would be given Extra for Increase or
Decrease in the Quantity of The BOQ Scheduled Items.
CONTRACTOR'SSIGNATURE ADD.CITYENGINEER
& STAMP (West Zone)
Detailed Technical Specifications
D1:- SAFETY PROVISIONS
1. Suitable scaffolds shall be provided for workmen for all that cannot safely be done from the
ground, or from solid construction except such short period work as can be done safely from
ladders. When a ladder is used, an extra mazdoor shall be engaged for holding the ladder
and if the ladder is used for carrying materials as well, suitable footholds and handholds
shall be provided on the ladder and the ladder shall be given an inclination not steeper than
¼ to 1 (¼ horizontal and 1 vertical).
2. Scaffolding or staging more than 3.25 metres above the ground or floor, swung or
suspended from an overhead support, or erected with stationery support, shall have a guard
rail properly attached, bolted, braced, and otherwise secured at lSouth 1 metre high above
the floor or platform of such scaffolding or stating and extending along the entire length of
the outside and ends thereof with only such openings as may be necessary for the delivery
of materials. Such scaffolding or stating shall be so fastened as to prevent it from swaying
form the building or structure.
3. Working platforms, gangways, and stairways shall be so constructed that they do not sag
unduly or unequally, and if height of a platform or gangway or stairway is more than
metres above ground level or floor level, it shall be closely boarded, have adequate width
and be suitably fenced as described in 2 above.
4. Every opening in floor of a building or in a working platform shall be provided with suitable
means to prevent fall of persons or materials by providing suitable fencing or railing with a
minimum height of 1 metre.
5. Safe means of access shall be provided to all working platforms and other working places.
Every ladder shall be securely fixed. No portable single ladder shall be over 3 metres in
length. Width between side rails in a rung ladder shall in no case be less than 30 cm for
ladder upto and including 3 metres in length. For longer ladders, this width shall be
increased by at lSouth 6 mm for each additional 30 cm of length. Uniform step spacing shall
not exceed 30 cm.
6. Adequate precautions shall be taken to prevent danger from electrical equipment. No
material on any of the sites shall be so stacked or placed as to cause danger or
inconvenience to any person or the public. The Contractor shall provide all necessary
fencing and lights to protect public from accidents and shall be bound to bear expenses of
defense of every suit, action or other proceedings at law that may brought by any person for
injury sustained owing to neglect of the above precautions and to pay all damages and costs
which may be awarded in any suit, action or proceedings to any such person or which may
with the consent of the Corporation be paid to compromise any claim by any such person.
7. Excavation and Trenching : All trenches, 1.5 metres or more in depth, shall at all time be
supplied with at lSouth one ladder for each 30 metres in length or fraction thereof. Ladder
shall be extended from bottom of trench to at lSouth 1 metre above surface of the ground.
Sides of a trench which is 1.5 metres or more in depth shall be stepped back to give suitable
slope, or securely held by timber bracing, so as to avoid the danger of sides collapsing.
Excavated material shall not be placed within 1.5 metres of edge of trench or half of depth of
trench, whichever is more. Cutting shall be done from top to bottom. Under no circumstance
shall undermining or undercutting be done.
8. Demolition : Before any demolition work is commenced and also during the process of the
(a) All roads and open area adjacent to the work site shall either be closed or suitably
(b) No electric cable or apparatus which is liable to be a source of danger over a cable or
apparatus used by operator shall remain electrically charged.
(c) All practical steps shall be taken to prevent danger to persons employed, from risk or fire
or explosion, or flooding. No floor, roof, or other part of a building shall be so over-loaded
with debris or materials as to render it unsafe.
9. All necessary personal safety equipment as considered adequate by the Engineer shall be
available for use of persons employed on the site and maintained in a condition suitable for
immediate use, and the Contractor shall take adequate steps to ensure proper use of
equipment by those concerned.
(a) Workers employed on mixing asphaltic materials, cement and lime mortars/concrete shall
be provided with protective footwear, hand gloves and goggles.
(b) Those engaged in handling any material, which is injurious to eyes, should be provided
with protective goggles.
(c) Those engaged in welding works shall be provided with welder’s protective eye-shields.
(d) Stone breakers shall be provided with protective goggles and protective clothing and
seated at sufficiently safe intervals.
(e) When workers are employed in sewers and Manchinholes, which are in use, the
Contractor shall ensure that Manchinhole covers are opened and Manchinholes are
ventilated at lSouth for an hour before workers are allowed to get into them.
Manchinholes so opened shall be cordoned off with suitable railing and provided with
warning signals or boards to prevent accident to public.
(f) The Contractor shall not employ men below the age of 18 and women on the work of
painting with products containing lead in any form. Whenever men above the ages of
are employed on the work of lead painting, the following precautions shall be taken:
(g) No paint containing lead or lead products shall be used except in the form of paste or
ready-made paint.
(h) Suitable facemasks shall be supplied for use by workers when paint is applied in the form
of spray or a surface having lead paint dry rubbed and scraped.
(i) Overalls shall be supplied by the Contractor to workmen and adequate facilities shall be
provided to enable working painters to wash during and on cessation of work.
10. When work is done near any place where there is a risk of drowning, all necessary
equipment shall be provided and kept ready for use and all necessary steps taken for
prompt rescue of any person in danger and adequate provision made for prompt first aid
treatment of all injuries likely to be sustained during the course of the work.
11. Use of hoisting machines and tackle including their attachments, anchorage, and supports
shall conform to the following :
(i) These shall be of good mechanical construction, sound material and
adequate strength and free from patent defects and shall be kept in
good repair and in good working order.
(ii) Every rope used in hoisting or lowering materials or as a means of
suspension shall be durable quality and adequate strength, and free
from patent defects.
11.1 Every crane driver or hoisting appliance operator shall be properly
qualified and no person under the age of 21 years shall be in charge
of any hoisting machine including any scaffold winch or give signals
11.2 In case of every hoisting machine and of every chain ring hook,
shackle, swivel and pulley block used in hoisting or lowering or as
means of suspension, safe working load shall be ascertained by
adequate means. Every hoisting machine and all gear referred to
above shall be plainly marked with safe working load. In case of a
hoisting machine having a variable safe working load, each safe
working load and the conditions under which it is applicable shall be
clearly indicated.. No part of any machine or of any gear referred to
above in this paragraph shall be loaded beyond safe working load
except for the purpose of testing.
11.3 In case of departmental machine, safe working load shall be notified
by the Engineer. As regards Contractor’s machine, the Contractor
shall notify safe working load of each machine to the Engineer
whenever he brings it to site of work and get it verified by the
12. Motors, gearing, transmission, electric wiring and other dangerous parts of hoisting
appliances shall be provided with efficient safeguards, hoisting appliances shall be provided
with such means as will reduce to the minimum risk of accidental descent of load adequate
precautions shall be taken to reduce to the minimum risk of any part of a suspended load
becoming accidentally displaced. When workers are employed on electrical installations,
which are already energized, insulating mats, wearing apparel such as gloves, sleeves and
boots, as may be necessary, shall be provided. Workers shall not wear any rings, watches
and carry keys or other materials, which are good conductors of electricity.
13. All scaffolds, ladders and other safety devices mentioned or described herein shall be
maintained in a safe condition and no scaffold, ladder or equipment shall be altered or
removed while it is in use. Adequate washing facilities shall be provided at or near places of
14. These safety provisions shall be brought to the notice of all concerned by display on a
notice board at a prominent place at the work spot. Persons responsible for ensuring
compliance with the Safety Provisions shall be named therein by the Contractor.
15. To ensure effective enforcement of the rules and regulations relating to safety precautions,
arrangements made by the Contractor shall be open to inspection by the Engineer or his
representative and the Inspecting Officers.
16. Notwithstanding the above provisions 1 to 15, the Contractor is not exempted from the
operation of any other Act or Rule in force.
17. Contractor shall fully responsible to provide safety measure / equipments necessary for
breaking the dummies constructed to plug the pipe inlet and outlet in the Manchinhole to
avoid any accident.
Note: - Contractor Shall follows the directions furnished by Gujarat High court as well as
Supreme court related to de-silting the sewerage pipe line &Manchinholes. He shall take care
of not lowering labour in the Manchinhole as well pipeline during the work. He shall fully
responsible for any accident if occurred during the work / contract period.
Signature of Contractor Add. City Engineer
Name : Ahmedabad Municipal Corporation
Company’s seal :
D2:-SAFE ENTRY AND WORKING IN SEWER LINES – GUIDELINES
SAFE WORK PRACTICE PRINCIPLES
1. Introduction
These general guidelines are intended to assist the Contractor in the development of
safe work practices. Where the risk assessment indicates that a particular hazard cannot
be present, the precautions to control that hazard do not apply. Remember that a
favorable history does not guarantee absence of hazard on this occasion.
2. Confined Space
“Confined Space”, in relation to a place of work, means a space of any volume which a
person may at any time enter or be allowed to be entered in which the atmosphere is
liable at any time to be oxygen deficient. This includes but not limited to pipes, sewers,
Manchinholes, tunnels, shafts, ducts, other similar sewerage installations and etc.
The Contractor shall develop acceptable work practices and safe entry procedures based
on the guidelines provided hereunder and the AMC’s safety code on safety precautions
to be observed during sewer desilting / lining work.
3. Notification to Work in Confined Space
The Contractor shall obtain an entry permit from the Engineer for each occupancy of any
confined space. The Contractor shall furnish all required details in an approved format to
the Engineer for permission to work in confined space at lSouth 24 hours prior to the
entry. Where prolonged work is involved, the permit must be renewed for each shift. An
incident, which substantially alters the condition of a confined space entry, requires
immediate evacuation and reassessment of the condition.
4. Air Quality and Ventilation
Contaminant control and effective ventilation are major factors influencing air quality in a
confined space. The ventilation must be adequate to clear pre-existing contaminated air
and maintain a respirable atmosphere during planned work. This ventilation may be
permanently installed or portable equipment used for this task. For general ventilation,
fresh air should be supplied to the workplace. Within the sewer system this creates an
environment, which displaces contaminated air in the immediate vicinity.
Where a task generates atmospheric contaminants in a specific area e.g. use of chemical
such as polyester resin, adequate local exhaust ventilation should be used to remove the
contaminants. Where failure of the mechanical ventilation system would result in
deterioration of air quality, the controls must be clearly tagged to prevent accidental
interference and the ventilation system monitored while the confined space is occupied.
Self-Rescuers must be carried whenever failure of the ventilation system or changes in
the working environment can create a contaminated atmosphere. The self-rescuer can
be a self-contained breathing apparatus, oxygen self-rescuer, or short duration self-
contained breathing apparatus, depending on the time taken to reach open air.
Note: Obtain occupational hygiene advice on the selection or performance of
ventilationsystem where this is not specified in the work practice or plant design.
Any regularly accessed confined space should be illuminated to AS 1680 or equivalent
with electrical installation to AS 3000 or equivalent. Portable lighting may be used to
supplement permanent lighting in the workplace. Temporary mains powered lighting
installed for a task must comply with the requirements of AS 2865 or equivalent Indian
Standards. Miners lamps, mounted on a safety helmet may be used as an alternative to a
hand held torch for personal illumination.
Unless portable lighting complies with AS 2380.7 or similar Indian Standard the
possibility of a flammable atmosphere must be eliminated by isolation, cleaning,
ventilation purging etc.
Where the confined space has been proclaimed as a flammable gas hazard area to AS
2430 or similar standard all fixed and temporary electrical installation must comply with
AS 2381 or equivalent standard. Torches and portable lights must comply with AS
or equivalent standard.
Illumination standards are: -
General Lighting: - 40 lux minimum, equivalent to a poorly lit
room Stairway Lighting: - 80 lux minimum
Task Lighting :- 240 lux minimum (normal workshop requirements)
6. Equipment usage, Standards and Maintenance
All confined space safety equipment as proposed in this tender documents shall also
meet the established international labour safety standards and be of appropriate
designed capacity for the proposed usage at sites. The equipment must be checked for
visible damage and correct operation before each use. Preventative maintenance must
be performed by trained, and where necessary, authorized persons at the intervals
recommended by the equipment manufacturers. The Contractor shall submit to the
Engineer evidence of such periodic check and maintenance of the equipment used for
confined space entry at every first week of the month.
7. Room to Work
When the constricted volume of a worksite prevents normal work postures and tool
movement, the need for special tools or frequent work rotation should be considered.
8. Control of Flooding
When a confined space is normally liquid filled, accidental return to service must be
prevented by double isolation e.g. insertion of suitable blanking piece, plugging with
inflatable plugs, temporary coffer dams as a second isolation in a Manchinhole or other
effective means.
9. Flow Control
Where a sewer is entered while flowing, rapid increase in flow must be prevented by use
of stop logs, isolation of pumping stations, weather watch and other means appropriate to
the sewer catchments. Adequate communication with the person responsible for flow
diversion must be maintained for the duration of the entry.
Where deep flowing water is present, use personal flotation devices. Safety harness and
lifeline and safety nets as appropriate to prevent drowning and washing away.
11. Fire and Explosion
Adequate precautions must be taken to minimize the risk of fire or explosion when
entering a confined space for any purpose.
12. Presence of Flammable Gas
The presence of flammable gas, flammable dust or the possibility of the presence of
airborne substances in flammable quantities may create a hazardous Area. Care shall be
taken by the authorized person to determine the presence of any such flammable
situation in the confined space before entry. Smoking or lighting any cigarette or box
matches in confined space shall be strictly prohibited. The flammable gases of concern
are methane, digester gas, vapours from flammable liquid, and vapours from trade waste
13. Manual Handling of Tools, etc.
Safe system of work should be followed to protect against falls of persons or objects and
crush by moving or falling objects.
Reverberation within a confined space can increase noise levels, especially if more than
one person is working. Heavy duty hearing protection may be required.
15. Vermin / Leptospirosis
All persons working in confined spaces should be aware of the leptospirosis hazard
presented by the presence of vermin. The presence of cockroaches etc. does NOT
indicate that the atmosphere is free of danger to health.
16. Standby and Communication
A member of the confined space work team is allocated the task of maintaining
communication with the members inside the confined spaces. This task may be rotated
among the members of the team. The Standby person must be trained and be physically
capable of providing the assistance and life support in an emergency and must have
sufficient proficiency in Hindi, English, Urdu and Punjabi languages to promptly
communicate information by radio or telephone when required.
While acting as stand-by, this person must not enter the confined space or leave the
vicinity unless relieved from this duty. A standby person is needed for all confined space
entries. The Safe System of Work must indicate the process for communication from the
confined space to the standby e.g. 2 way radio ‘man down’ alarm line of sigh etc.
17. Fitness Assessment
An assessment of fitness, including cardiovascular and respiratory health, is required to
ensure that all persons entering confined spaces, or acting as the stand-by person, can
comply with the physical demands of the job, without risk to their health.
18. Emergency Rescue and First Aid
No person shall enter any confined space, even in an emergency, without first ensuring
all safety requirements have been met. A safety emergency plan may assist in a safe,
speedy response in the event of an emergency.
All confined space work teams must be trained and equipped to sustain life and be able
to summon emergency help, provide first aid and assist emergency service personnel, if
Trained persons using supplied air breathing apparatus must only attempt rescue of
persons apparently overcome by toxic gases in a sewer or other confined spaces.
Stabilization of other injuries must be prioritized against the availability of breathable air.
19. Gas Detector
The Contractor shall engage an authorized person for gas monitoring and detection. This
person shall be trained to operate and response test gas testing equipment and is
authorized by management to perform the necessary tests to decide whether a category
2 or 3 confined space is fit to enter.
Gas testing can only be performed by persons trained in gas testing, using equipment
appropriate for the anticipated contaminants. This person can perform other duties
provided these do not conflict with the gas-testing task.
20. Specialist Gas Detector
This person has technical qualifications and acceptable training to operate and response
test gas testing equipment, including hydrocarbon detectors and detector tubes and
assesses portable ventilation systems. He is authorized by management to carry out
atmospheric testing to establish entry conditions for all confined space categories, and to
establish whether a Category 1 confined space can be re-classified to a Category 2. He
also performs tests to verify whether hot work is permitted in gas hazard areas.
Where possible, cleaning should be performed without entry to the confined space, even
if only preliminary cleaning is possible.
Particular attention should be given to the probability of releasing hydrogen sulphide
when disturbing microbial active sludge and sediments, which have accumulated in a
confined space. Supplied air respiratory protection shall be worn where such residues
exist and effective ventilation cannot be guaranteed. Continuous gas monitoring is
required even when supplied air respirator protection is used.
Hose couplings should be designed to resist accidental dislodging or loosening. Both the
operators and the standby person should be able to stop the flow of cleaning material
into the confined space.
Hydro jetting must be performed according to the relevant regulations. Where chemical
compound is used in within the confined space, the chemical compound should be
classed in the Material Safety Data Sheets as non-irritant to respiratory system, eyes and
skin. If this is not possible then appropriate respirator skin and eye protection must be
worn. Substance specific air monitoring may be required.
A visitor to a confined space is a person other than a contractor, who is not a member of
the Confined Space Work team. Visitors must be escorted and trained or inducted in the
necessary skills for that entry and shall sign an indemnity form before entry into a
confined space. No visitor shall be allowed to enter the confined space without prior
permission of Engineer.
23. Hazard Control
Hazards to be identified and controlled include but are not limited to access mechanical
and electrical isolation, flow isolation and control, drowning and engulfment, last known
contents, atmospheric contaminants, temperature extremes, security and public access.
24. Air Quality Standard For Entry
The acceptable limits of some gases in confined spaces are:
Gas/Vapor Present Acceptable Limits
a. Oxygen Content (o) 19.5% to 23.5% by volume
b. Flammable Gas/Vapor 5% of Lower Explosive Level (LEL)
c. Hydrogen Sulphide (H2S) 5 ppm
d. Carbon Monoxide (CO) 10 ppm
25. Carbon Monoxide (CO)
Carbon monoxide is colorless, odorless, flammable and toxic. Its common sources are
fire, motor vehicle exhausts and cigarette smoke.
This gas is a chemical asphyxiant and is readily absorbed by the hemoglobin in the
blood. Then hemoglobin is unable to transport oxygen to the body tissues and the body
becomes oxygen starved. These effects are more pronounced with hard work or for
heavy smokers. Symptoms include headache (50-200ppm), nausea (400ppm), irregular
heartbeat (1200ppm). Collapse and death (2000ppm).
The entry permit limit is 10 Parts Per Million (ppm). Maximum with an IDLH value of
ppm. (IDLH-Immediately Dangerous to Life and Health)
Note: Some gas detecting machine sensors are cross sensitive, H2S being detected by
theCO cell and vice versa. Alarm by either sensor requires evacuation and re-evaluation
of the safe system of work.
26. Flammable Gas/Vapor
A gas or vapor that will burn when mixed with air in certain proportions and ignited.
The mixture, which contains the lSouthamount of flammable gases that will explode, is
called the Lower Explosive Limit (LEL). The mixture, which contains just enough Oxygen
to let the flammable gas explode, is called the Upper Explosive Limit (UEL). The
flammable range varies for gases and vapors.
Many of these have toxic effects when inhaled and a Workplace Exposure Standard has
been issued to protect workers from these Gas/Vapor. The Contractor shall obtain
relevant Workplace Exposure Standard (WES) for use in the site.
Gas / Vapour Flammable Range 5% LEL WES
in % (FOR ENTRY PERMIT
Butane 1.9 – 8.5 950 ppm 800 ppm
n-Hexane 1.2 – 6.9 600 ppm 50 ppm
Methane 5 – 15 2500 ppm Axphyxiant
Petrol 1.3 –6 650 ppm 900mg/cum
Trichloroethylene 12.5 – 90 6259 ppm 50 ppm
27. Hydrogen Sulphide (H2S)
Hydrogen Sulphide is a colourless, toxic and flammable gas, which usually has the odour
of rotten eggs. In sewerage systems it is usually derived from the action of bacteria on
the sulphur compounds in anaerobic or old sewage. A small amount of sludge or slime in
wet wells or sewers will release a lot of H2S when disturbed.
After a few minutes exposure, the ability to smell hydrogen sulphide by a person is lost
and then hydrogen sulphide becomes more dangerous as its presence is no longer
obvious and the person could become an innocent victim.
It can sometimes be detected by odour at less than 0.1 ppm but can be readily detected
by odour at 4 ppm. More serious health effects include eye irritation (10 ppm), respiratory
irritation (50 ppm), headache, nausea, dizziness (200 ppm), collapse and death (700
The entry permit limits is 5 parts Per Million (ppm), Maximum with an Immediately
Dangerous to Life and Health (IDLH) value of 300 ppm.
Some gas detecting machine sensors are cross sensitive, H2S being detected by the CO
cell and vice versa. Alarm by either sensor requires evacuation and re-evaluation of the
safe system of work.
28. Methane (CH4)
The most common flammable gas found in sewers is methane. This mainly comes from
gas pipe leaks in the city’s gas distribution system. It can also be derived from the action
of anaerobic bacteria on rotting material. However a range of other flammable gases and
vapours may be encountered. These include LPG, petrol vapour and other solvents.
Digester gas, found in anaerobic sludge digesters on sewage treatment plants is a
flammable mixture of methane nitrogen and carbon dioxide.
Methane is a colourless, odourless gas. Although pure methane is slightly lighter than air
the relative density of methane / air mixture is similar to air entry permit range. Methane
is hazardous because of its flammability, i.e. between concentrations of 5% to 15% in air,
it may explode if an ignition source is present.
High concentrations of methane may result in oxygen deficiency. Injury or death result
from lack of oxygen not methane toxicity classifying methane as a simple asphyxiant.
29. Oxygen Content (O2)
Fresh air contains 20.9% oxygen, equivalent to a partial pressure of 211.8 hectopascal of
oxygen at sea level.
The readings obtained on a gas detection instrument in open air may vary depending on
instrument calibration and barometric pressure.
In a confined space, oxygen can be used up by bacteria in sewage or sludge, rusting of
iron fittings, burning (or welding) or displaced (pushed out) by other gases.
Breathing of air, which contains reduced oxygen results in increasingly serious health
effects. These range from impaired coordination and faulty judgment (12-16% O2) to
collapse and rapid death (less 6% O2).
Increased oxygen readings can only come from instrument error or by leakage from
oxygen cylinders, liquid oxygen tank, etc. High oxygen levels greatly increase fire
hazards, fires burn fiercely; oily clothing and hair can catch fire without an ignition source.
The entry permit levels are 19.5% to 23.5% by volume.
Parts per million (ppm)
Parts of gas or vapour per million parts of contaminated air by volume at 200C and 1 bar
Parts of substance per 100 parts of air, water
31. Other Atmospheric Contaminants
Entry, unless wearing air supplies breathing apparatus is not permitted unless
atmosphere contaminants are below the relevant 8-hour time weighted average (TWA)
Workplace Exposure Standard. This limit applies for all entries including brief exposures.
Entry wearing breathing apparatus is only permitted where the concentration of the
contaminant is within the protection factor of the breathing apparatus and below the IDLH
(Immediately Dangerous to Life and Health) value.
32. Sewer Gases
Air in contact with live sewage contains gases released from the sewer. For safe entry,
contaminated air must be replaced with clean air by ventilation of the confined space.
The resulting atmosphere must be confirmed by gas testing.
Discharge of untreated wastes, e.g. hypochlorites, electroplating effluent, acids may
result in generation of chlorine, hydrogen cyanide and other harmful gases some
distance from the original discharge.
33. Confined Space Categorisation
The confined space category is a guide to developing a safe system of work. The
confined space category may change to a more stringent level as a result of adverse
environmental factors or work produces contaminants. Alternatively it may change to a
less restrictive category if appropriate engineering upgrades, whether temporary or
permanent, are implemented.
1.1 Category 1 – Confined Space
Entry allowed only if flammable gas is below 5% of L.E.L. and other gases are within the
protection factor of the respiratory protective equipment used.
Visibility must be adequate
Personal Safety
o Wear specified protective clothing for the hazards.
o Wear safety harness.
o Use lifeline where appropriate.
Respiratory Protection
o Test air quality prior to entry by a Specialist Gas Detector.
o Ventilate to reduce contamination.
o Monitor air quality as directed by the Specialist Gas Director.
o Wear airline breathing apparatus with backup air supply OR wear self-
contained breathing.
Note: An Oxygen self rescuer is nor a backup for an airline used in contaminated
If the Category 1 confined space is a chemical storage tank, it can be reclassified to a
Category 2 or 3-confined space when the specialist gas detector confirms that the
chemical has been cleared from the interior.
Sewer, wet wells etc can be reclassified by a specialist gas detector to a lesser confined
space only when an approved safe system of work is employed. This safe system of
workmust provide for demonstrated control of airborne contaminants and other hazards
in the workplace, to provide conditions equivalent to a Category
Hot work requires control of fire and explosion hazards and may require air supplied
breathing apparatus to control fumes irrespective of the confined space category. A Hot
word permit is required in addition to the normal entry permit.
1.2 Category 2 – Confined Space
Entry allowed only if all gases are within entry permit limits. Personal Safety
o Wear specified protective clothing for the hazards.
o Wear safety harness.
o Use lifeline where appropriate.
Respiratory Protection
o Test air quality prior to entry
o If air quality test fails, refuse entry until reason found and rectified, or revert to
Category 1 entry conditions.
o Ensure adequate ventilation
o Monitor air quality during entry.
o Carry oxygen self rescuer
Note: Standby person must have SCBA readily available.
Hot work requires control of fire and explosion hazards and may require air supplied
breathing apparatus to control fumes irrespective of the confined space category. A Hot
word permit is required in addition to the normal entry permit. A hydrocarbon check by a
“specialist gas detector” is required unless the environment can be upgraded to Category
1.3 Category 3 – Confined Space
Entry permit required (unless using a posted entry procedure for routine operation of the
facility) for each shift that the structure be occupied.
Wear protective clothing specified for the hazards.
Respiratory Protection
Test air quality prior to entry
If the proposed work can generate airborne contaminants, arrange ventilation.
Respiratory protection and / or air quality monitoring as appropriate.
Hot work required hot work permit and control of fumes.
If air quality test fails, revert to Category 1 entry conditions or refuel entry until
reasons found and rectified.
1.4 Category 4 – Confined Space
Follow facility safety procedures.
Wear protective clothing specified for the hazards
Respiratory Protection
Evacuate when alarms advise
Hot work requires control of fumes.
Separate Permit(s) required for chemical cleaning and / or hot work. If evacuation alarm
sounds, evacuate following site emergency procedure. Reoccupy as a Category
confined space.
Generic Entry Summary
Category Category Category Category
Entry Permit Yes Yes Yes Yes
Standby Person Yes Yes Yes* *
Communication to remote Yes*
Protective Clothing Yes* Yes* Yes* Yes*
Safety Harness Yes Yes
Lifeline/Fall arrester Yes Yes
Airline and backup Yes*
Specialist gas tester Yes
Gas tester Yes Yes Yes
Gas monitoring Yes Yes
Ventilation Yes* Yes* Yes Yes
*Appropriate choice given in Safe Work practice for the task
# Required by Standby Person
34. Entry Permit Format
A general entry permit for working in sewerage works is given below as an example. The
contractor shall develop his own format of the entry permit form and submit it for the
approval of Engineer.
35. Maintenance of Equipment
This equipment must be maintained as per manufacturer’s recommendation and records
kept of this maintenance.
Compressed air bottles must be refilled by a source, which warrants that the air meets
quality standards of AS1715 or equivalent.
Air from air compressors must be treated to meet quality standards of AS1716 and tested
periodically to demonstrate compliance.
All respiratory protection system must be used in accordance with AS1715.
36. Gas Detecting Machines
The instrument must be operated according to the manufacturer’s instructions.
The instrument must be checked for correct functioning using a test gas (‘Response
Check’) every day when the instrument is used to check possibly contaminated
If the instrument is used less frequently, it can be response checked each time it is used.
The following equipment must meet the relevant section of AS1716 or any equivalent
A. Self contained breathing apparatus.
B. Oxygen Set (Rescuer).
C. Airline compressed air breathing apparatus.
All workmen should use all the same-model of this equipment for interchangeability.
Obtain professional advice for selection of airline breathing apparatus and compressed
air self-rescuers.
Portable gas detection instruments must meet the following requirements.
Manual of Practice
Sr.No. Gas Monitored Range Required Resolution Required
1 Oxygen 1% - 30% Resolution 1%
2 Flammable Gas 1% - 100% of LEL Resolution 1% of LEL
3 Hydrogen Sulphide 1 – 50 ppm Resolution 1 ppm
4 Carbon Monoxide 1 – 400 ppm Resolution 1 ppm
ENTRY PERMIT FOR CONFINED SPACES
(Required for an confined space entries)
CONFINED – SPACES CATEGORY [ ]
Is a hot word permit also required? Y/N
If Yes. Permit No.
1. SITE AND TASK INFORMATION
Contractor’s Visitor’s
Description of work to be Requested
2. ISOLATION OF CONFINED SPACE 5. PERSONNEL PROTECTIVE
( ) Water/ sewer flow isolation/control ( ) Supplied air respirator
( ) Harmful substance present ( ) Oxygen self rescuer
( ) Warning notices, locks or tags in place ( ) Safety harness
( ) Other (specify) ( ) Safety line
( ) other protective clothing/equipment
3 AIR QUALITY …………………………………………..
Oxygen (19.5% - 23.5%) 6. OTHER PRECAUTIONS
Hydrogen Sulphide (<10 ppm) ( ) Warning notices / barricades in place
Flammable gas (<5% LEL) ( ) Smoking prohibited
Carbon monoxide(<30ppm) ( ) Rescue system in place
Other specify ( ) Emergency rescue trolley available
Limit ( ) Result……………… ( ) Other precaution (Specify)
Ventilation ……………………………………………
Operating / provide…………………………. ……………………………………………
Time and date of 7. CONFINED SPACE ENTRY PERMIT
Response test date for gas testing This confines space in my opinion safe for
entry and work under the listed indications.
Machine…………………………………….
Monitor while occupied: Yes/No. ( ) The work teak is trained and equipped for
Additional category1 Safe entry valid
Substance checked ( identify and limits) From……………………………am/pm
……………………………………………. Responsible
Monitoring delegated to gas tester (Y/N) 8. SIGNING OUT
Condition………………………………… ( ) All persons have left the confined space
and no further entry is permitted on this
Specialist gas tester………………………..
From……………………………am/pm
4. CHEMICALS ( to be used in the confined 9. OBLERVED FAULTS / INCIDENTS
D3:- SAFETY PRECUATIONS TO BE OBSERVED DURING CLEANING, DESLITING AND LINING
18. Special Direction to Tenderers
1.1 Precautionary measures to be taken be the contractor for the safety and welfare of the labours
connoted with desilting and lining work.
To begin with the work of desilting, initiall six consecutive Manchinholes are
to be opened, two on the up-stream and two on the down-stream side of the two
Manchinholes, on the actual stretch to be cleaned or desilted. The Manchinholes should be
kept open for one hour prior to the starting of cleansing operations and should be so kept
open during the whole duration of cleaning operations. This to be done for allowing the
combustible gases to escape naturally. No lighted matchsticks should be thrown in the
Manchinhole. This may cause fire and explosions endangering the life of the workmen and the
pedestrians. This may also damage to the sewer and other adjoining utility services, if any
Jalis should be placed over all the opened Manchinholes to prevent pedestrians etc. from
falling in. tripod stands with flags it should be written in white bold letters “Danger Manchinhole
1.2 When working at night, lantern fitted with red globe and lights shall be hung from the tripod
stand. Each Manchinhole kept open should be guarded by one labourer or C.I. heavy cover
with holes exactly fitting up to the fame and capable of taking the load of lorry should be
placed over the Manchinhole, so that top of the cover is flush with the road surface. The
contractor without any extra cost shall provide the covers. The same should be removed and
replaced with regular Manchinhole cover when the work is closed.
1.3 The contractor should keep sufficient number measurement rods. The measurement rods
shall be made out of solid bamboo/M.S. rod of sufficient length fixed with M.S. flat 150 mm X
150 mm X 6 mm (6”X6” and ¼”) thick at one end and fitted with point at other end, to take
measurement of water and silt.
1.4 Manchinholes shall be kept open for minimum one hour to allow foul gases to escape and
simultaneously there should be forced purging with the help or an are blower to completely
clean the air in the sewer.
1.5 Sewage levels shall be checked in the Manchinholes and the same should not be more then
1.6 Wet lead acetate paper shall be inserted in the Manchinholes which should nit turn even light
brown or black. If the lead acetate paper turns light brown or black, then the Manchinhole
shows the presence of Hydrogen Sulphide Gas (H2S) and in that case this test shall be
repeated after every ten minutes till positive result is achieved. The sensitivity of lead acetate
paper should be ascertained to suit and detect the minimum allowable concentration (MAC)
for long-term exposure.
This paper should be held as low as possible in the Manchinhole atmosphere. In spite or long
waiting for about one and half hour, if he lead acetate paper continues to show negative gas
detector shall be used for half an hour. Thereafter gas detector shall be used to check the
presences of gases and the worker shall be allowed only after it is confirmed that the condition
inside the Manchinhole is safe for man entry.
Whenever necessary, or where the sewer line is heavily silted or there are chances of gas
eruption, the person entering the Manchinhole shall be provided with gas mask or breathing
apparatus (respiratory system) and hand blower or mechanical blower be used during the
desilting operation. In every case use of gas monitor in working condition is mandatory. In
additional to this, the conventional methods lie lead acetate paper test etc. be done. The gas
monitors should be accurately calibrated after regular intervals to maintain their reliability.
After the lead acetate paper test, a lighted safety lamp shall be inserted in the Manchinhole,
which should burn smoothly. If not, it shows the presence of Carbon monoxide (CO) and in that
case precautionary measures as stated in sub-pare (g) should be followed.
After the presence of combustible gases are ruled out the following further tests is required to
be carried out for the presence of oxygen.
A lighted naked candle placed at the center of the candle testing equipment covered with glass
on three sides should be lowered down slowly. If the flame is extinguished or flickers, it
indicates the presence of carbon monoxide and or carbon dioxide. If it burns for not less than
five minutes uniformly, it indicates the presence of oxygen, which is required for breathing for
the workman working inside the Manchinhole.
19. Working Inside the Manchinhole
After all these tests are carried out successfully, particular care should be taken where sewer is
heavily silted, the scum and sullage should thoroughly be stirred and disturbed by means of
long bamboos/ G.I. rod from the top of the Manchinhole to allow entrapped gases within silt
pockets to escape before allowing the labourers to go down into the Manchinhole.
The depth of water should be measured and the labourer should be asked to get down when
the level of water is less then 450 mm (18”). Before the labourer is allowed to get down inside
the Manchinhole, he should be asked to apply barrier creams all over the body as a
precautionary measures to safe guard against itching and burning sensation. Safety belt should
be tied around his waist and chest when the labourers are getting down, another man at the
top should hold the other end of the rope. Not less then two people should be allowed to work
inside the Manchinhole at a time.
If the labourers who are working inside the Manchinhole show slight discomfort, they should be
asked to come up or pulled up. The labourers who are working inside the Manchinhole should
give jerks every few minutes to signify that everything is okay with them.
After getting satisfactory test result and after taking precautionary measures as stated above,
the worker shall be allowed to descend or enter in the Manchinhole. The workers entering the
Manchinhole shall be provided with wadder suit, hand gloves protective head gears and head
lamp. If the wadder suits are not available the worker shall be provided with Barrier Creams
with germicide to be applied to their entire body to prevent harmful effect due to contact with
harmful bacteria and germs.
The worker entering the Manchinhole shall wear Harness belt around his waist. In spite of the
Manchinhole entry tests being carried out, there are chances of eruption of poisonous gasses
in the silt. If the worker finds any difficulty in breathing initially or during the work then he should
be taken out immediately by means of harness belt. Where the sewer line is heavily silted or
there are chances of gas eruption, gas mask shall be used while entering the Manchinhole and
also during desilting.
On completion of the work all Manchinholes shall be checked and it should be ascertained that
the same are properly closed.
20. Safety (General)
Proper ventilation shall be maintained in the Manchinhole and sewer line being desilted. Hand
operated or mechanical blower should be preferable used for half an hour to one hour before
entering the sewer line even after getting the safe working condition, while desilting sewer lines
where accumulation of silt is heavy. While the blowers shall be operated continuously during
the desilting of sewer lines which are heavily silted or susceptible to gas generation.
While carrying out desisting, the sewer lines of man-entry size, the contractors shall use blower
during the entire period. This would not only ensure safe condition but also ensure comfortable
working condition for the worker and would in turn increase his performance and output.
In some Manchinhole where sewage is falling over workman or causing obstruction, plugging
the upstream sewer will be allowed temporarily without any charges, provided the Contractor
ensures that the upstream sewer line does not overflow. The plugs shall be removed
immediately after the work has been completed.
The Contractor shall, as far as possible, use mechanical process for cleaning and desilting
sewer lines and progressively minimise manual process of desilting so that entry of workers in
the sewers for purpose of cleaning and desilting shall be avoided.
A list of various safety tools, overhauls and safety equipment.
• Harness Belts
• Protective Head Gear with Lamp
• Breathing apparatus
• Thigh and Wadder Suits
• First Aid Box
• Barrier Creams with Germicides
• Other related safety items, as directed by the Engineer
No worker of Contractor shall be allowed to enter into the Manchinhole for cleaning and
desilting the sewer lines unless all the safety tools, shackles and equipment are at site and the
worker is equipped with personal safety gear such as gumboot, wadder suit, headgear, head
lamp and, harness belt etc.
The Contractor should keep “first aid box at the site of works”.
One vehicle with the safety equipment such as breathing apparatus, diver suit, air blower,
escape set etc., shall be made available at each Desilting. The same vehicle shall have other
facility such as first aid kit, provision for eye wash.
21. Welfare of the Workman Engaged For Desilting / Lining Works
No person below the age of 18 years shall be employed for carrying out cleaning and desilting
work of the sewerage system / sewer lines.
Adequate safety measures shall be taken by the Contractors.
The Contractor should impart training to the supervisory staff, all the workman entrusted with
the task of sewer rehabilitation.
A detailed medical checkup of all the workers must be immediately undertaken. This check up
should include a full clinical examination, proper blood tests, routine radiological tests,
pulmonary functions test, a psychiatric evaluation and other specialized tests wherever
necessary. Special emphasis must be given to the
study of the respiratory system, the eyes and the skin problems.
Each worker engaged in cleaning the desilting of the sewer lines / Manchinholes, shall be
medically examined once a year and shall not be engaged, if he is suffering from any of the
diseases such as respiratory, skin, eye-problems, infections, cardiovascular, spinal, psychiatric
nature etc. He should not be engaged for cleaning and desilting work inside the Manchinhole or
sewer lines till he is cured.
Whether a person is suffering from any of the above mentioned diseases or not shall be
certified by any Municipal Doctor. Similarly, the contractors engaged in cleaning and desilting
operation, shall get their workers, employees medically examined and shall not employ any
worker who is found to be suffer from any of the above mentioned ailments.
The workers should be provided with vaccination against certain diseases commonly prevalent
among sewage workers due to the nature of their work.
First Aid Box properly stocked including washing bottle to wash skin and eyes, should be kept
at the site of work.
Proper arrangement should be made to get treatment expeditiously, including facilities for
speedy admission and treatment in any nearby hospital to the work site. Location of the
hospital should be displayed at the site of work.
The Contractors engaged by AMC for sewer cleaning desilting and repair work, should take out
workmen insurance policy at Contractor’s cost (individual or group) for workers engaged by him
for sewer cleaning and / or desilting or repairing.
The Contractor shall maintain washing, drinking water and toilet facility at each Chowky. If no
toilet is provided in the Chowky, it should be so located that the public toilet is available within a
distance of 300 m. The site Chowky should also be equipped with full first aid kit.
Contractor should provide carbolic soap at the rate of one cake for four days for washing
clothes that are used by workers. The workers should be asked to take bath after the work is
over. In cold seasons i.e. December to February, Contractor should supply sufficient fire wood
to workers for warming up after taking the bath.
22. Contractor’s Responsibility towards Welfare of the Workmen
A responsibility officer of the supervisory cadre of the Contractor should be physically present
at the site and he/she should ensure and document compliance of the guidelines under the
scheme for measures of safety and welfare of the workers and entry worthiness in the
Manchinhole. He / She should remain physically present throughout the operation and the onus
of compliance of these guidelines should lie on.
A log book should be maintained by him/her for giving the date and time, the names of
workers, place and other relevant particulars of stay in the Manchinhole etc. The said official
should hold a certificate of training from a Competent Body such as National Safety Council,
New Delhi Fire Brigade etc. in First-Aid and Emergency Measures. If the Supervising Officer is
not satisfied about the various requirements as specified in the above specification, then the
work should be stopped immediately.
List of the Contractor’s employees including their residential addresses, age, etc. is required to
be supplied by the Contractor in separate register.
If the Contractor has engaged 20 or more labourers, then the Contractor is required to be
registered under the Contract Labour Act and Inter-State Migrate Labour Act, wherever
Contractors should abide by all the rules and regulations in respect of labour laws prescribed
by the Government Authorities and submit the returns etc.
The workmen compensation should be paid to the Contractor’s employees as per the
provisions of Workmen’s Compensation Act.
Contractor should maintain a muster of all the labourer working at site and his supervisor
should prepare a triplicate copy of the same specifying the persons getting down the
Manchinhole. The Contractor shall send one copy to the Engineer and another copy shall be
kept in his office for his record. The copy should reach the Engineer on the day before 11 AM
without any extra cost.
The Contractor shall also ensure that the silt is transported within 24 hours to the Dumping
ground or to the site as directed by the Engineer. If the Contractor fails to remove the silt within
24 hours the same will be removed by the AMC at his risk and cost, after the Contractor has
been notified in writing.
The Contractor should not make the silt storage depot etc., near the water gully. If found that
the Contractor disregarded the above and caused blockage in the water gully, the AMC will
clean the gully at the risk and cost of the Contractor. Contractors shall located depots at places
All the silt removed from Manchinholes / chambers near bus stop or junctions should be
transported immediately to a place approved by the Engineer at say 100 meters from the
Manchinhole, and from where the same shall be transported to the approved dumping yard as
soon as possible.
The Contractor should sprinkle sufficient quantity of bleaching powder over the silt removed
site to prevent smell emanating from the silt.
No person other than the Contractor’s workers should be allowed to go inside the Manchinhole.
If it is found that any unauthorized person has entered the Manchinhole and injured or died the
Contractor will be solely and fully responsible for the consequences including damages etc.
claimed by the person or his heirs.
Plugging etc., if required to be done for stopping the flow or diverting the flow and pumping out
sewage to facilitate removal of the choke or for any other purpose connected with cleaning
work should be done by the Contractor without any extra cost.
Even though the Contractors takes all the precautionary measures and by chance any
workman is injured or dies due to negligence or otherwise the Contractor will be responsible for
the claims of damages by the workman or his heirs.
23. SAFETY PROVISIONS:-Suitable scaffolds shall be provided for workmen for all that cannot safely be
done from the ground, or from solid construction except such short period work as can be done
safely from ladders. When a ladder is used, an extra mazdoor shall be engaged for holding the
ladder and if the ladder is used for carrying materials as well, suitable footholds and handholds
shall be provided on the ladder and the ladder shall be given an inclination not steeper than ¼ to
1 (¼ horizontal and 1 vertical).
24. Scaffolding or staging more than 3.25 metres above the ground or floor, swung or suspended
from an overhead support, or erected with stationery support, shall have a guard rail properly
attached, bolted, braced, and otherwise secured at lSouth 1 metre high above the floor or
platform of such scaffolding or stating and extending along the entire length of the outside and
ends thereof with only such openings as may be necessary for the delivery of materials. Such
scaffolding or stating shall be so fastened as to prevent it from swaying form the building or
25. Working platforms, gangways, and stairways shall be so constructed that they do not sag
unduly or unequally, and if height of a platform or gangway or stairway is more than 3.25 metres
above ground level or floor level, it shall be closely boarded, have adequate width and be
suitably fenced as described in 2 above.
26. Every opening in floor of a building or in a working platform shall be provided with suitable
means to prevent fall of persons or materials by providing suitable fencing or railing with a
minimum height of 1 metre.
27. Safe means of access shall be provided to all working platforms and other working places.
Every ladder shall be securely fixed. No portable single ladder shall be over 3 metres in length.
Width between side rails in a rung ladder shall in no case be less than 30 cm for ladder upto and
including 3 metres in length. For longer ladders, this width shall be increased by at lSouth 6 mm
for each additional 30 cm of length. Uniform step spacing shall not exceed 30 cm.
28. Adequate precautions shall be taken to prevent danger from electrical equipment. No material
on any of the sites shall be so stacked or placed as to cause danger or inconvenience to any
person or the public. The Contractor shall provide all necessary fencing and lights to protect
public from accidents and shall be bound to bear expenses of defence of every suit, action or
other proceedings at law that may brought by any person for injury sustained owing to neglect of
the above precautions and to pay all damages and costs which may be awarded in any suit,
action or proceedings to any such person or which may with the consent of the Corporation be
paid to compromise any claim by any such person.
29. Excavation and Trenching : All trenches, 1.5 metres or more in depth, shall at all time be
supplied with at lSouth one ladder for each 30 metres in length or fraction thereof. Ladder shall
be extended from bottom of trench to at lSouth 1 metre above surface of the ground. Sides of a
trench which is 1.5 metres or more in depth shall be stepped back to give suitable slope, or
securely held by timber bracing, so as to avoid the danger of sides collapsing. Excavated
material shall not be placed within 1.5 metres of edge of trench or half of depth of trench,
whichever is more. Cutting shall be done from top to bottom. Under no circumstance shall
undermining or undercutting be done.
30. Demolition: Before any demolition work is commenced and also during the process of
13.1 All roads and open area adjacent to the work site shall either be closed or suitably protected.
13.2 No electric cable or apparatus which is liable to be a source of danger over a cable or
apparatus used by operator shall remain electrically charged.
13.3 All practical steps shall be taken to prevent danger to persons employed, from risk or fire or
explosion, or flooding. No floor, roof, or other part of a building shall be so over-loaded with
debris or materials as to render it unsafe.
31. All necessary personal safety equipment as considered adequate by the Engineer shall
be available for use of persons employed on the site and maintained in a condition
suitable for immediate use, and the Contractor shall take adequate steps to ensure
proper use of equipment by those concerned.
32. Workers employed on mixing asphaltic materials, cement and lime mortars/concrete shall be
provided with protective footwear, hand gloves and goggles.
33. Those engaged in handling any material, which is injurious to eyes, should be provided with
protective goggles.
34. Those engaged in welding works shall be provided with welder’s protective eye-shields.
35. Stone breakers shall be provided with protective goggles and protective clothing and seated at
sufficiently safe intervals.
36. When workers are employed in sewers and Manchinholes, which are in use, the Contractor shall
ensure that Manchinhole covers are opened and Manchinholes are ventilated at lSouth for an
hour before workers are allowed to get into them. Manchinholes so opened shall be cordoned off
with suitable railing and provided with warning signals or boards to prevent accident to public.
37. The Contractor shall not employ men below the age of 18 and women on the work of painting
with products containing lead in any form. Whenever men above the ages of 18 are employed
on the work of lead painting, the following precautions shall be taken:
20.1 No paint containing lead or lead products shall be used except in the form of paste or ready-
20.2 Suitable facemasks shall be supplied for use by workers when paint is applied in the form of
spray or a surface having lead paint dry rubbed and scraped.
20.3 Overalls shall be supplied by the Contractor to workmen and adequate facilities shall be
provided to enable working painters to wash during and on cessation of work.
38. When work is done near any place where there is a risk of drowning, all necessary equipment
shall be provided and kept ready for use and all necessary steps taken for prompt rescue of any
person in danger and adequate provision made for prompt first aid treatment of all injuries likely
to be sustained during the course of the work.
39. se of hoisting machines and tackle including their attachments, anchorage, and supports
shall conform to the following :
39.1 These shall be of good mechanical construction, sound material and adequate strength and
free from patent defects and shall be kept in good repair and in good working order.
39.2 Every rope used in hoisting or lowering materials or as a means of suspension shall be durable
quality and adequate strength, and free from patent defects.
40. Every crane driver or hoisting appliance operator shall be properly qualified and no person under
the age of 21 years shall be in charge of any hoisting machine including any scaffold winch or
give signals to operator.
41. In case of every hoisting machine and of every chain ring hook, shackle, swivel and
pulley block used in hoisting or lowering or as means of suspension, safe working load
shall be ascertained by adequate means. Every hoisting machine and all gear referred
to above shall be plainly marked with safe working load. In case of a hoisting machine
having a variable safe working load, each safe working load and the conditions under
which it is applicable shall be clearly indicated.. No part of any machine or of any gear
referred to above in this paragraph shall be loaded beyond safe working load except for
the purpose of testing.
42. In case of departmental machine, safe working load shall be notified by the Engineer. As regards
Contractor’s machine, the Contractor shall notify safe working load of each machine to the
Engineer whenever he brings it to site of work and get it verified by the Engineer.
43. Motors, gearing, transmission, electric wiring and other dangerous parts of hoisting
appliances shall be provided with efficient safeguards, hoisting appliances shall be
provided with such means as will reduce to the minimum risk of accidental descent of
load adequate precautions shall be taken to reduce to the minimum risk of any part of a
suspended load becoming accidentally displaced. When workers are employed on
electrical installations, which are already energized, insulating mats, wearing apparel
such as gloves, sleeves and boots, as may be necessary, shall be provided. Workers
shall not wear any rings, watches and carry keys or other materials, which are good
conductors of electricity.
44. All scaffolds, ladders and other safety devices mentioned or described herein shall be
maintained in a safe condition and no scaffold, ladder or equipment shall be altered or
removed while it is in use. Adequate washing facilities shall be provided at or near
places of work.
45. These safety provisions shall be brought to the notice of all concerned by display on a
notice board at a prominent place at the work spot. Persons responsible for ensuring
compliance with the Safety Provisions shall be named therein by the Contractor.
46. To ensure effective enforcement of the rules and regulations relating to safety
precautions, arrangements made by the Contractor shall be open to inspection by the
Engineer or his representative and the Inspecting Officers.
47. Notwithstanding the above provisions 1 to 15, the Contractor is not exempted from the
operation of any other Act or Rule in force.
48. Contractor shall fully responsible to provide safety measure / equipments necessary for
breaking the dummies constructed to plug the pipe inlet and outlet in the Manchinhole to
avoid any accident.
Note: - Contractor Shall follows the directions furnished by Gujarat High court as well as Supreme
court related to de-silting the sewerage pipe line &Manchinholes. He shall take care of not lowering
labour in the Manchinhole as well pipeline during the work. He shall fully responsible for any accident
if occurred during the work / contract period.
Signature of Contractor Add.City Engineer
Name : Ahmedabad Municipal Corporation
D:- TECHNICAL SPECIFICATIONS –
Sewers to be inspected shall be suitably cleaned by high vacuum suction equipment
and by high pressure water jetting to remove all silt, grease and loose materials.
Where necessary mechanical cleaning tools may be used to scrape off grease and
encrustations in the sewer.
All mass roots, intruding laterals and concrete shall be neatly cut off as required for proper
structural lining work.
Cleaning shall be carried out from the downstream access Manchinhole or chamber(otherwise
employer will direct to start the de-silting work) to the upstream access Manchinhole or
chamber and shall include all operations necessary to remove grease, slime, silt and loose
materials from the sewer bore and Manchinhole or chamber. All loosened and inherent silt
and grease material in the pipeline shall be prevented from passing downstream by necessary
stanking arrangement.
a) INSPECTION OF MANCHINHOLES :
Inspection of Manchinhole conditions in accordance with WRC / MSCC is will be carried out
concurrently during the inspection of sewer.
Manchinhole inspection can also carried out manually with data logging of defects and general
Provision will be made to provide photographic / video evidence of defects where applicable.
Any defects found will be repaired by suitable method after getting approval from DJB.
b) BYPASS PUMPING / DIVERSION OF FLOW:
The main and branch sewers including cross connections are considered flowing full generally
in the morning peak hours. The bypass system provided shall be of sufficient capacity to
handle the estimated flows on 24 hours basis.
The bypass pumping/flow diversion arrangement shall be continuously monitored and cleaned
or cleared off any obstructions due to the silts / grits with appropriate and quick disposals.
Every day to ensure that the bypass arrangement is working properly and no overflow of
The main sewer shall regularly desilt the diverted sewer network to ensure that there is no
overflow of sewage occurs at any time.
Joint inspection of the flow diversion arrangements can be carried out during lean and peak
flow periods at lSouth once in a week.
Flow diversion plan shall be done at site to deploy necessary pumps of suitable capacity as
per the site condition.
c) PUMPING FACILITIES:
The provision will be made for , operation, maintenance and noise suppression of all over
pumping plant, for the provision (including establishment and removal), operation &
maintenance of all delivery hose installed and for the period during which bypass pumping
work is required ; sinking hoses in trenches; backfilling and reinstating these trenches as
required ; placing horizontal and/or ramped metal planting over temporary diversion of the
delivery hose either in trench or at the road surface and for routing delivery hoses
through other conduits, standing and plugging lateral connections as well as other relevant
requirement. The pumping equipment shall be attended to all the time by competent pump
d) TELEVISION INSPECTION OF SEWERS
The WORK of this Section includes pre-cleaning, when necessary, and performing a closed
circuit television (CCTV) inspection of the indicated reaches of sewers. The minimum diameter
of sewer for television inspection shall be 4 inches.
The purpose of inspection is to detect and locate defects and document the current condition
of the sewer, leading to evaluation and selection of repair methodology by the OWNER.][The
purpose of inspection is to inspect and document the physical condition of the sewer after
rehabilitation.] [The purpose of inspection is to document the condition of the new sewer.]
The CONTRACTOR is cautioned that sewage will continue to flow to the sewers and that the
WORK must be performed under permit required for confined space entry conditions.
a) SHOP DRAWINGS AND STANDARDS
The following shall be submitted in compliance with Section
1. CCTV equipment operational manual.
2. Location where debris from cleaning sewers will be disposed.
3. Schedule for cleaning and inspecting each sewer reach.
D2:- EXECUTION OF CLEANING THE SEWER LINE:
DIVERSION PUMPING
The CONTRACTOR shall install and operate sewage diversion pumping equipment to maintain
sewage flows without backup, overflow or spill. He shall divert the flow of the existing line to be de-
silted in to downstream of the same line. He shall inform to AMC staff about the diversion of the
flow .He shall install the pumps of sufficient capacity so that no heading should be in upstream of
the de-silting work. He shall study all the branch lines falling in the line to be de-silted. He shall
keep well maintained register for every stacking used for diversion of the flow.
The CONTRACTOR shall select the cleaning equipment and method for cleaning based on the
age, the material, and the probable condition of the sewer. More than one type of equipment or
attachments may be required on a single reach or at a single location. The CONTRACTOR shall
not damage the sewer or any Manchinhole during cleaning.
When requested by the CONSTRUCTION MANAGER, the CONTRACTOR shall demonstrate the
performance capabilities of the cleaning equipment and method proposed for use. If results
obtained by the demonstration are not satisfactory, the CONTRACTOR shall select other methods
or equipment that will clean the sewer line, and shall perform another demonstration.
For water pressure cleaning equipment, the CONTRACTOR shall install a gauge to monitor
working pressure on the discharge of high-pressure water pumps.
The CONTRACTOR shall remove dirt, debris, and grease from the entire circumference of the
sewer between Manchinholes.
Acceptance of sewer cleaning work is contingent upon the successful completion of the television
inspection. If television inspection shows debris, solids, sand, grease, or grit remaining in the line,
the cleaning will be considered unsatisfactory, and the CONTRACTOR shall repeat cleaning and
televising of the sewer line at no increased cost to the OWNER until cleaning is acceptable to AMC
CONSTRUCTION MANAGER
A The CONTRACTOR shall remove sludge, dirt, sand, rocks, grease, roots, and other solid or
semisolid material resulting from the cleaning operation at the downstream Manchinhole of the
section being cleaned. A suitable sand trap, weir, dam, or suction in the next downstream
Manchinhole shall be installed so that solids and debris are trapped for removal. Passing debris
from one sewer section to any other sewer section shall not be allowed. Debris from the
Manchinholes shall be loaded into a leak proof, enclosed container that is permitted by
applicable regulations for liquid waste hauling. All solids or semi-solid wastes shall be removed
from the Site at the end of each work day. Debris, liquid waste, or sludge shall not accumulate at
B The CONTRACTOR shall dispose of waste using a licensed waste transporter to a location
licensed for the type of waste involved.
A. CCTV Equipment
1. The camera system shall include a pan-and-tilt, radial viewing, pipe inspection camera that pans
plus or minus 275 degrees and rotates 360 degrees with zooming capability. The
CONTRACTOR shall use a camera with an accurate footage counter which displays, on the
operator's monitor and the videotape, the distance of the camera from the centreline of the
starting Manchinhole. The CONTRACTOR shall use a camera with height adjustment so that the
camera lens is always cantered at one-half the inside diameter, or higher, in the pipe being
televised. The CONTRACTOR shall provide a lighting system that allows the features and
condition of the pipe to be clearly seen. A reflector in front of the camera may be required to
enhance lighting in large diameter pipe. The camera system shall be controlled from the
operator's truck.
2. Recording shall be on a 4-head VHS format VCR recorded at standard play mode in color.
b. Only segments between Manchinholes on the same sewer reach shall be included on one
c. Two permanent labels are required. One label shall be placed on the spine and the other on
the face of the videotape.
d. Cassette spine information
(1) CONTRACTOR NAME
(2) Project Name
(3) Tape Number
(4) Date Televised
(5) Date Submitted
e. Cassette face information
(1) Name of street
(2) From Manchinhole Number and VCR counter number
(3) To Manchinhole Number and VCR counter number
(4) Pipe Length and Size
(5) Project Name
(6) Tape Number
f. For each cassette the CONTRACTOR shall prepare a TV Inspection Report which shall be a
complete written log of pipe conditions [and connections], indexed to the footage counter.
1. The CONTRACTOR shall televise the sewer immediately after cleaning. It shall notify the
CONSTRUCTION MANAGER 24 hours in advance of TV inspection so that the
CONSTRUCTION MANAGER may observe inspection operations.
2. In addition, the CONTRACTOR shall clean all associated sewer Manchinholes, and shall pan the
camera to document the conditions of Manchinholes. Camera operator shall slowly inspect each
connection and sewer transitions from one pipe material to another.
3. Sewage flow during television inspection shall not be deeper than: Nominal Diameter Depth as
Percent of Inches Inside Diameter
Greater than 24
If the flow exceeds the depth limit, the CONTRACTOR shall either perform the inspection during
minimum flow times, pump or otherwise divert some flow, or use a camera with provisions for
high velocity jet flushing.]
4. The CONTRACTOR shall move the camera downstream at a uniform rate not greater than
feet per minute. The CONTRACTOR shall stop and thoroughly inspect each of the following:
[a. Collapsed pipe, obstructions
b. Structural cracking, with and without deflection
c. Missing portion of wall
d. Sag, excessively deflected joint
e. Cracked and open joints
f. Root intrusion
g. Protruding joint sealing material
h. Corrosion conditions, including exposed aggregate, exposed reinforcement, and disintegrated
wall which exposes the soil surrounding the pipe.
i. Missing, damaged, bulging PVC sheet lining.
j. Protruding lateral joint
k. Inflow point]
5. The camera operator shall log on a suitable form his/her observations in the inspection of the above
6. If the camera is unable to pass an obstruction even though flow is unobstructed, the
CONTRACTOR shall also approach the obstruction from the other direction in order to obtain
complete video on both sides of the obstruction. The CONTRACTOR shall notify the
CONSTRUCTION MANAGER whenever such an obstruction is encountered. The
CONSTRUCTION MANAGER will determine if the obstruction must be removed.
D3:-Additional Conditions For Particular Work
1. Contractor shall work of cleaning the Manchinhole as well as Pipe section with the use of
machinery and all necessary instruments. Contractor shall work outside of the Manchinhole
and nobody shall work inside of the Manchinhole in any occasion. If he will have to put any
labour in Manchinhole he shall make following necessary arrangement
A. Contractor shall keep both end of pipe in the Manchinhole open if there will be any labour work
in the Manchinhole. He has to suck the foul gases from the Manchinhole as well as pipe and
blow the fresh air in the Manchinhole as well as pipe section.
B. Contractor shall protect / Barricade the working site if any cover of Manchinhole will be open
for the work. He shall put the caution board around the Opened Manchinhole.
C. Contractor shall keep the Manchinhole opened without any body in the Manchinhole& blow the
air as well as fresh water in the Manchinhole check whether the gas has been removed from
the Manchinhole and then after he shall allow for labour in the Manchinhole.
D. Contractor shall put the Gas detector in the Manchinhole as well as put the lightened candle in
the Manchinhole so that Oxygen gas can be checked in the Manchinhole.
E. Contractor shall put the alarm system in the Manchinhole.
F. Any labour shall lower down in the Manchinhole with the safety belt, Mask, Oxygen Cylinder,
First Aid Box and contractor shall take care of the labour.
G. Contractor shall provide any tool to the labour very carefully while he is working in the
Manchinhole so that any hazardous may not be arises.
H. Contractor shall arrange Mucadum and Supervisor continuous on the site during the work
I. Contractor shall arrange the training for the labours working in the Manchinhole to operate the
safety measures.
J. Contractor shall provide Uniform as well as operating tools to work in the Manchinhole.
K. Contractor shall make the arrangement that every cover of the Manchinhole shall be fixed on
the Manchinhole sheet after the work will be completed.
L. Contractor shall remove the sludge/ silt removed from the Manchinhole and pipe section such
a way that it may not be dangerous for health of public and traffic of the road around vicinity of
M. Contractor shall furnish the data daily to the AMC office and shall make the arrangement
N. Contractor shall provide the Mobile phone to his supervisor/ Engineer on the work place for
better coordination with AMC staff.
O. Contractor shall appoint eligible and capable supervisor to handle the any type of situation /
accident at the site and he should remain present at the work site.
P. If any accident occurs at the work site contractor shall fully responsible and AMC will not
provide any help in that manner.
Q. The Contractor shall maintain suitable working conditions such as approach for labours and
the Vehicles / Equipments up to the Manchinhole on his cost.
R. Contractor shall arrange water tanker as and when required water during the commissioning of
Seal and Signature of the Bidder Additional City Engineer
Date: Ahmedabad Municipal Corporation
TECHNICAL SPECIFICATION
Name of Work:-Desilting of drainage line work At Acher Gamtal Road, Parimal
Hospital Road, Visat to Rathi Apartment Road, Visat to Tapovan Circle Road, Jawahar
Chowk Circle to Sarvottam Nagar Road, Ramnagar Road and the surrounding areas
by CCTV camera method in Sabarmati ward ,West Zone.
1) Constructing Slab type M.H. Chamber of the following size including excavation, refilling, brick bats
cement concrete (1:5:10) of thickness 15 C.M., CC Channel (1:2:4) of thickness 10 C.M., finished 15 mm
thick cement plaster inside & outside (Only for shaft) in CM 1:3, finishing with cement slurry, P/F 4 mm
diaM.S.Steel HDPE coated steps 35 cm c/c at 35 cm staggered in masonary CM 1:5, RCC Slab in CC
1:1.5:3 of thickness 23 C.M., including Cantering & reinforcement (double jalli at 15 C.M. c/c bothway
mm dia.) but excluding the cost of Manhole seat cover etc..completed. of Size 1.00 X 1.40 meter (Inside
Clear, M.H. length should be parallel to the flow, for pipe dia<= 800 mm)
2) 1.00 to 2.00 meter depth, (Slab at Ground level)
3) 2.00 to 3.00 meter depth, (Slab at below 0.6 mt. From G.L.)
4) 3.00 to 4.00 meter depth, (Slab at below 1.00 mt. From G.L.)
5) 5.00 to 6.00 meter depth, (Slab at below 1.00 mt. From G.L.)
6) 7.00 to 8.00 meter depth, (Slab at below 1.00 mt. From G.L.)
(a)Excavation : This be done as specification in Item No.
(b)Brick bats CementConcrete:-
: Cement used shall be got approved by the enginre in charge be fore starting the work this shall comply
with specification in general.
Sand to be used should comply with specification of P.W.D. hand book in general.
Brickbats to be used for concrete must be thoroughly well burnt and free fromany impurities
and size from 20 to 25 m.m.
The preparation of concrete shall be one part of cement 5 part of sand &10 part broken brickbats.
Brickbats must be perfectly clean from inprutes and shall be throughlywetered be for mixing and mixed
properly on wooden or specially propared platform until every part of the brockbats is sufficently coated with
Concrete must always be used fresh it shall be laid in layers as directed never exceeding 20 kms. in
thickness and be well and quickly rammend with heavy rammers, until mortar creams up to surface. The
surface must be kept damp during and after consolidation & in laying consecutive layer the lower coars
should be well watered & mode lough be for the next is placed.
(c)Brick work with cement mortar .
Brick shall be table bricks of approved clean conforming with the specification as laid down in P.W.D. hand
book No.2 The brick shall be wellburnt and free from any defects shall be got approved by the Enginur in charge
be fore the work is started.
Cement to be used for mortar shall comply with I.S.S. & P.W.D. hand book specifications cement mortar for
the brick work shall be one parts of cement to six part of sand every brick well soaked in water is required to be
ladi in joints of cement mortar the thickness of which shall not exceed paints of 1.25 cm If after removal of
centering any open joints are founed these shall be pointed immedately.
Special care shall be taken to make the faces of brick work smooth brick work mar be toothed or shall be
racked back in course.
All intrados of curse be worked from compete strickly made to dimensions and grade.
Brick work in general shall be of first class workmanship and shall be excuted according to plan working to
the proper dimension & as directing by the officer in charge from the time to time bricks should be throughly in
water be fore use. All bricks shall Ihave to be cleaned water be fore laying cement mortar shall be prepared in
special iron pans and mixed in quantites as required using measurs boxes for sand and cement bag of 1.25 cft.
or 1 cft. as measured the case may be all materials shall be stacked on the site as not to obstruct tra fic in any
way the masonary should be constructed in proper workmanship like manner with joints plunb etc. to conform
with general specification No.45 P.W.D hand book. The face work should be neatly finished. The work shall be
keptwaterd for work at lSouth after date of completion.
(d)C.C. channels.
Cement concrete for the inverts and channels of manholes shall consist of one parts of cement 2 parts of
sand 4 part of aggregates of black trap metalof other approved material of sizes from 0.6 to 2.5 cm. well graded
as per instructions.
The work shall be as per P.W.D hand book specification No.20 as per general instructions. The rate
includes all necessary materuals mixing laying and remain and watering the exposed faces tobe finished with
neat cement as per instruction the channel shall be half round and as per drawing & instruction of Engineer in
charge. proper bunching shall be provided at both of the channel.
(e)Cement plaster.
Cement plaster 15 M.M. shall be done using cement mortar of 1 part cement and 3 parts of sand in uniform
thickness with surfaces truely in plumb. The work in general shall comply with general specifi cations for )plaster
no.64.P.W.D. hand book plastered surface shall kept damp atlSouth for fortnight.
All internal surfaces of the manholes including soft to arch shall be provided with cement plaster.
Manhole shall be provided at every change of alignment, gradient or diameter of sewer/storm water drains,
Bends and junctions in the sewer/drain shall be grouped together in manhole as far as possoble. The maximum
distance between inspection chambers shall be about 25 meters. Where the diameter of sewer/drain is
increased, the soffit of the pipe shall be fixed at the same level and necessary slope given to the channel of
manhole/inspection chamber. The minimum internal sizes of manhole/inspection chamber shall be as per the
respective item of work. The manhole/inspection chamber shall be constructed as per the detailed drawings and
as directed by Engineer. The bed concrete and the brick masonry shall be constructed of such thickness as
shown on drawing. The brick masonry shall be constructed in C.M. (1:5), plastered on both faces inside and out
side with 15 mm cement plaster in C.M. (1:3). The channel shall be semicircular in the bottom half and of
diameter equal to the sewer/drain. Above the horizontal diameter, the sides shall be extended vertically to the
same level as the crown of the outgoing pipe and the top edge shall be suitable rounded off. The branch
channels shall also be similarly constructed with respect to the benching out at their junction with the main
channel as appropriate fall suitable rounded off in the direction of flow in the main channel shall be given. The
channel at the bottom of manhole / inspection chamber shall be plastered with C.M. (1:3) and finished smooth.
Rungs shall be provided in all manholes/inspection chambers over 0.6 mtr in depth and shall be of cast iron
conforming to IS:5455. These rungs shall be fixed staggered in two vertical runs, 300 mm apart horizontally and
300 mm c/c vertically. The top rung shall be 450 mm below the manhole/ inspection chamber cover and the
loSouthnot more than 300 mm above the benching. The manhole/inspection chamber frame and cover shall be
of cast iron of specified weight and shall conform to the requirements given in IS:1726. The covers and frames
shall be cleanly cast and they shall be free from air and sand holes and from clod shuts. They shall be neatly
dressed and carefully trimmed. All castings shall be free from voids whether due to shrinkage, gas inclusion or
other causes. Covers shall have a raised chequered design on the top surface to provide an adequered nonslip
grip. Cover shall be capable of easy opening and closing and it shall be fitted in the frame in workmanship like
manner. The cover shall be gas tight and water tight. The size of covers specified shall be considered as the
clear internal dimensions of the frame. Covers and frames shall be coated with a black bituminous composition.
The coating shall be smooth and tenaceous. The frame of manhole/inspection chamber cover shall be firmly
embeded to correct alignment and level in cement concrete on the top of the masonry. The item shall be
executed as per the detailed drawing and as directed by Engineer.
Design and Details of Reinforcement for the slab shall be approved before casting work or as directed by
engineer in charge or Additional City Engineer (zone)
Mode of measurement:
The rate shall be for a unit of one number basis.
Temporary / Permanent Plugging for blocking of sewer line, branch connections and
diversion of flows and removal of all plugs by any means etc. comp. as directed by
Engineer In Charge of the work.
Measurement shall be on No. basis. Contractor shall construct temporary pucca
dummy in main line or branch lines opening in the Manchinhole to close the sewer
flow for de-silting the sewer pipe in working stretch and to divert the sewage flow
by brick massionary or other means in optional pipe.
Contractor shall open the dummy after de-silting work completed and remove all
debries from the Manchinhole.
Rate also includes of line commissioning after de-silting it with if available nearby
freely. If it not available in the near vicinity area freely Contractor himself provide it
on his own cost.
Provide everything else required for diversion of flow by pumping and / or bypassing and
to maintain the sewerage system functioning normal and managing the flow without any
sur-charging, overflows etc during the De-silting/ rehabilitation works of the sewer line to
the satisfaction of the Engineer in charge of the work.
Measurement shall be considered on Running meter length basis as per attached
abstracted rates.
Loosen, de-silt and thoroughly clean and remove debris and objects such as boulders,
bricks etc, bacteriological slimes, roots, encrustations, grease, carbonated deposits, etc
from the sewer line including disposal of silt / debris / malba / objects etc, including
solidification of silt/malba/debris for disposal to the dumping sites as per the direction of
the Engineer - in - charge.(As per Rate Analysis)
Measurement shall be considered on Running meter length basis as per attached
abstracted rates. Item includes De-silting work for existing following size dia. sewerage line and
its Manchinhole of any size and depth. Work shall be executed as per guideline of honorable
Supreme Court. Rate includes Loosen, de-silt and thoroughly clean and remove debris and
objects such as boulders, bricks etc, bacteriological slimes, roots, encrustations, grease,
carbonated deposits, etc from heavily surcharged sewer line by super sucker machine with high
flow jetting and vacuum system including safe disposal of silt / debris / malba / objects etc with
carting within AMC limit. Rate includes divergence of the sewer flow from working stretch of the
line by installation of proper pumping system so that there should not be over surcharging in
upstream of the working stretch (upstream of the plugged line). Rate includes 100% CCTV survey
of de-silted sewer line with camera on pan and tilt rotated 360̊ and recording and submitting 3 sets
of CD and sufficient copies of Still Photographs. Rate also includes supply of all material, labours,
tools and plants, temporary power connection with standby generator of sufficient power output,
gas detector, forced air ventilators and provision of saetyequipments as per guideline laid by
ISI1972(and 1987), international standard traffic control arrangements and proper lighting at night,
barricading, display of sign boards
Contractor shall arrangement for the safety and securities system with barricading on site, carting
of silt up to 5.0 Km lead, required power arrangement, machinery, equipments and manpower at
the work. If any water found in the pipeline or Manchinhole contractor shall dewater from the
Manchinhole or pipeline by any means of machinery. He shall take care of not disturbing any
people residing in the vicinity area during the work of dewatering and de-silting. He shall take care
of not lowering any labour in the Manchinhole / pipe. Contractor shall use any kind of machinery
as well as equipments for de-silting the pipeline. After de-silting the pipe as well as Manchinhole
Engineer in charge of the work shall verify the pipeline whether it is cleared or not. He shall have
to make the arrangement of any kind of material like water and equipments like pump, hosepipe,
Fighter, Jetting, Suction machinery, for testing and commissioning the pipeline. All rates are
inclusive of dewatering, de-silting, carting the silt at 5 km lead, testing and commissioning the
pipeline with barricading, safety guards.
Contractor shall have to make the line dead (Free of sewage flow) if the line found
flowing with the Clean or Sewage Flow at his own risk and cost. He shall make the
arrangement for diverting the sewage flow from the sewage flow.
Post-desilting colour CCTV/ Photographic survey including pan and Zoom inspection of
laterals and defects and submission of video tapes or CD inclusive of colour photographs
to the Engineer in total 2 Sets.
Any dia. Pipeline and any size Duct
Measurement shall be considered on Running meter length basis as per attached
abstracted rates.
Cutting of bituminous road of DBMand Asphalt concrete of any thickness.
Measurement shall be considered on Running meter length basis as per attached
abstracted rates.
Brickwork using common burnt clay building bricks having crushing strength not
less than 35 kg/sq. cm in foundation and plinth in cement mortar 1:5(icement :
coarse sand) including racking out joints, curing, scaffolding etc complete as
directed for any height. Measurement shall be considered on No.s basis as per
attached abstracted rates.
Raising buried manhole undereath road using Brick masonarey with Bricks of Stremgth
KG/sq. Cm and cement mortorin 1:5 plaster work in cement Mortar 1:4 and CC work Up to
new road level as per instruction of engineer in charges.
Measurement shall be considered on No. basis as per attached abstracted rates.and
work executed as per directed and instructed by engineer in charge.
Providing And fixing fiber reinforced seat and cover in line and CC 1:2:4 and finishing
smooth etc. Complete as directed Heavy Duty Type.
Measurement shall be considered on No. basis as per attached abstracted rates.and
work executed as per directed and instructed by engineer in charge.
Seal and Signature of the Bidder Additional City Engineer
Date: Ahmedabad Municipal Corporation
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AHMEDABAD MUNICLPAL CORPORATION
MAHANAGAR SEVA SADAN
Clause : 1 Contractor shall not employ any child having age 5 to 15 years as it is prohibited by Child Labour Prohibition and
Regulation Act 1986. Hon'ble Supreme Court has given certain guide lines and as per the guide lines. If child labour is
employed on the site work, the contractor shall have to deposit Rs. 20,000.00 (Rupees Tw enty thousand only) in the child
labour welfare fund. If the employer refuses to deposit then action will be taken for contempt of Supreme Court
Judgement and also will be prosecuted by concerned authority. Because of the breach of any provision of child labour
prohibition and regulation Act 1986 by the Contractor & Municipal Corporation becomes liable to pay any amount then
the Municipal Corporation shall recover the said amount from the contractor.
Clause : 2 The Standing Committee has decided to deduct 1/2% amount from each running bill as per its Reso. No.
Date 06--02-97, but the Municipal Corporation Board has recently decided that the actual testing charge is taken and the
remaining amount is refundable at the time of final bill (As per Muni. Board Reso. No. 123 dated 25-02-97)
Clause : 3 Contractor has to follow prevailing Labour act and has to maintain labour register acordingly,and has to follow
other govt.rules.
Clause : 4 Quantity taken in tender are tentative and may differ as per execution of work. No claim shall be entertain
regarding QUANTITIES.
* MODIFICATION OF DOCUMENTS
Modification of specifications and correction/corrigendum in respect of the work if required will be made by A.M.C. The
same shall be placed on A.M.C website which may be downloaded by the tendrers enclosed along with the tender duly
signed. These shall form a part of tender. The tenderer shall not add or amend the text of any of the documents except in
so far as may be necessary to comply with any addendum.
* ADDENDAUM/CORRIGENDUM .
Addendum or corrigendum conveying any change or correction in respect of the work shall form the part of the contract
documents. The full consideration shall be given to such addendum or corrigendum or correction before submission
tender duly filled in by the contractor. Therefore, the contractor shall have to watch such addendum or corrigendum or
correction published by A.M.C through its website www.egovamc.com. Tenderes shall verify the number of addendum
issued and enclose the same with the tender documents,failing which the tender shall be liable for rejection and no any
complaint in respect to this shall be entertained under any circumstances.
CONTRACTOR'S SIGNATURE ADD.CITY ENGINEER
& STAMP (West Zone)
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