SUPPLYIG AND INSTALLATION OF RAIN WATER HARVESTING MODULE AROUND THE LAKES OF DYCE-2 WARDS IN NORTH WEST ZONE (A.R.C)

Name of work: SUPPLYIG AND INSTALLATION OF RAIN WATER HARVESTING MODULE AROUND THE LAKES OF DYCE-2

WARDS IN NORTH WEST ZONE (A.R.C)

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The issuing branch of the bank guarantee shall be of Ahmedabad / Gandhinagar City only.

As per Government of Gujarat G.R. No. - EMD/10/2019/50/DMO Dt. 18/06/2019

& AMC Finance Department, Circular No. (1) 48 Date:- 29/01/2012,(2) 58 Date 16/03/2012(3)

Finance Department, AMC no. 26 Date: 25/11/2019 (11) Circular of Finance Department, AMC

no. 21 Date: 19/06/2020 (12) Circular of Finance Department, AMC no. 40 Date: 5/11/2020 (13)

Circular of Finance Department, AMC no.12 Date: 14/6/2021 approved Banks are.

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A. Guarantees issued by following banks will be accepted as SD/EMD on permanent basis.

 All nationalized Banks

B. Guarantees issued by following banks will be accepted as SD/EMD for the period up to

March- 31, 2022. 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.

1 Commercial Banks :- 2 Co-operative and Rural Banks Of Gujarat :-

1. RBL Bank 1. The Mehsana Urban Co-operative Bank Ltd

2. Axis Bank 2. The Ahmedabad Mercantile Co-Operative Bank Ltd

3. ICICI Bank 3. Nutan nagrik Sahakari Bank Ltd

4. HDFC Bank 4. The Kalupur Commerical Co-operative Bank Ltd

5. Kotak Mahindra Bank 5. Rajkot Nagarik Sahakari Bank Limited

6. IndusInd Bank 6. The Gujarat State Co-Operative Bank

7. DCB Bank 7. Sarswat Bank

8. Tamilnadu Mercantile Bank 8. Saurashtra Gramin Bank

9. Ujjivan Small Finance Bank

10. A U Small Finance Bank

11. Federal Bank

12. Equitas Small Finance Bank

13. Bandhan Bank

14. Standard Chartered Bank

15. City Union Bank

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Tender No.:- AS PER NIT

Tender Fee – AS PER NIT Date of submission: AS PER NIT

Earnest Money- AS PER NIT Date of Opening: AS PER NIT

Contractor’s Name & Address

Ahmedabad Municipal Corporation

Engineering Department - North West Zone

Name SUPPLYIG AND INSTALLATION OF RAIN WATER HARVESTING MODULE AROUND

of THE LAKES OF DYCE-2 WARDS IN NORTH WEST ZONE (A.R.C)

Sr. No. Quantity Items Rate Rs.Ps. Per Amount Rs.Ps.

Construction of Infiltration Drain Tunnel

including supply fixing and made of

Polypropylene drain in the size of 800mm width,

Height of 510mm length of 1160mm, and 11kg

in weight confirming to BBA IS Standard with

Maximum Load of 60t per Sq.mtr including earth

work excavation in bituminous/ concrete roads

upto 2.5mtr depth , Geo - textile 200 micron,

fine filter media crushed stone 12 mm thickness,

coarse filter crushed stone 20 mm thickness,

gravel cell (as per approved) filled with course

filter media of size 20 mm including earthwork

excavation/ refiling in bitumen/concrete road

and carting with lead of 12 km complete as per

1 46.443 drawing and engineer in charge. 17749.41 Rmt

Construction of Modular type RWH Structure

using infiltration modules of size 800 x 800 x

mm and side wall infiltration modules of size

x 360 x 25 mm including earthwork excavation/

refiling in bitumen/concrete road to a size of

1200 x 1200 x 3000 mm and providing base

plate, Geo - textile 400 mm- 200 micron, fine

filter media crushed stone 12 mm thickness,

coarse filter crushed stone 20 mm thickness, silt

catchpit made up of RCC in grade M-25 using

granule, quartzite trap metal of size 12 mm to

mm and or 6 mm to 12 mm, 100mm thick PCC of

grade M-10 using granite quartzite trap metal of

size 12 mm lo 25 mm including scaffolding

centering formwork. needle vibrated

consolidation, cutting and hydraulic testing with

cantering and shuttering/deshuttering, TMT bars

2 confirming to relevant IS Fe - 500 grade for all

diameters including cutting, bending, binding

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and placing in position steel as per plan and

design and as per IS 2502 including cost of steel

and binding wire, including Supply and fixing

perforated FRP of 600 X 600 mm (Grating cover

with Frame- Medium Duty -30MT), including

connection to new/ existing drain with 150 mm

PVC pipe and all labour charges, carting away

the excavated material with lead 12 km etc.

complete as per drawing and as per direction of

engineer in charge.

% ABOVE or % BELLOW

CONTRACTOR'S SIGNATURE ADDITIONAL CITY ENGINEER

& STAMP (NORTH WEST ZONE)

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AHMEDABAD MUNICIPAL CORPORATION

"North West Zone, Zonal Office", Nr. Atithi Hotel, Bodakdev Ahmedabad.

Municipal Commissioner invites Percentage Rate sealed tenders from interested contractors .

1 Name of work SUPPLYIG AND INSTALLATION OF RAIN WATER HARVESTING

MODULE AROUND THE LAKES OF DYCE-2 WARDS IN NORTH

WEST ZONE (A.R.C)

2 Time Limit 12 Months

3 Eligibility Criteria Register “E-2” class in PWD in Govt. R&B/CPWD/AMC or

equivalent registration with any other state Govt. or institutions.

4 Estimated Cost put to RS.

5 Earnest Money Deposit RS

Demand Draft, Pay order, or Cheque ,Bank

Guarantee(As per finanance circular No 22) in

favour of Municipal Commissioner, Ahmedabad)

To be submitted as prescribed in 7.0 below.

Demand Draft or Bank Guarantee shall be from

Nationalized Bank and valid for 120 days.

6 (A) Security Deposit: 5% of Tender Amount

(B) Retention 1. @ 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.

7 Tender fees (Non RS 900.00 Demand Draft / Pay order in favour of Municipal

refundable) Commissioner, Ahmedabad

8 Submission of EMD and In separate sealed cover each for EMD and Tender Fees along with

Tender Fees Tender as described in the invitation of tender and submitted to

Assistant Manager(North West zone) , Ahmedabad Municipal

Corporation, North West Zone, Zonal Office", Nr. Atithi Hotel,

Bodakdev Ahmedabad

9 Tenders issue Tenders from the AMC website http://amc.nprocure.com shall be

down loaded from

10 Last date of receiving 20.01.2026 TO 17.00 hrs only. The tenders received after

Tenders.Date. this date and time will not be entertained under any circumstances.

11 Date of Opening 21.01.2026 TO 12.00 hrs to Assistant Manager "North West

this date and time will not be entertained under any circumstances.

Zone Office", Rajmata vijyaraje Sindhiya bhavan,Nr.Atithi dining

hall,Judjes bunglow road, Bodakdev

12 Mode of sending the Tender Document shall be submitted in sealed envelope systems By RPAD/

Document Speed post/ Hand Delivery/ Courier in sealed covers as described in

submission of the tender.

13 Terms, Condition, & All general condition of contract of Form B1 condition of contract

Specification shall be applicable.

14 liquidated damages- 10% of the Amount For Balance work After Date of Completion or extended

Compensation For Delay time Limit.

15 Operation and Maintenance Once the system goes live after 12 months, it should be maintained and operated

Period: on an annual basis for the next 5 years. This includes regular maintenance

activities, updates, and ensuring the system's optimal performance throughout

its operational lifespan.

Conditional tenders will not be accepted. Municipal Commissioner reserves the rights to reject any or all

the tenders without assigning any reasons thereof.

CONTRACTOR'S SIGNATURE ADDITIONAL CITY ENGINEER

& STAMP (NORTH WEST ZONE)

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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 value Bid Security Completio

No. of works (Rs.) (Rs.) n Period

1 SUPPLYIG AND RS 10,00,000.00 RS 10,000.00 12 mont

INSTALLATION OF RAIN hs

WATER HARVESTING

MODULE AROUND THE LAKES

OF DYCE-2 WARDS IN NORTH

WEST ZONE (A.R.C)

2 Tender (a complete set of bidding document) fee shall be Rs 900.00 in the form of Demand Draft

/ Pay Order from any Nationalized Bank in favor of MUNICIPAL COMMISSIONER, Ahmedabad, payable

at Ahmedabad, which shall be non refundable. The fees shall be paid at the time of submitting the

3 Interested bidders shall download the tender documents from website http://amc.nprocure.com .

UP TO DT. 19.01.2026 at 18.00 HR tender fee as mentioned in clause 2 above shall be paid by

the bidder at the time of bid submission

4 All bids must be accompanied by Bid Security of the amount specified for the Works in the above Table

payable at Ahmedabad and drawn in favor of AHMEDABAD MUNICIPAL CORPORATION, Ahmedabad. Bid

Security will have to be in any one of the forms as specified in Clause of ITB (Instructions to Bidders).

5 All Bids must be delivered to Assistant Manager "North West Zone, Zonal Office", Nr. Atithi Hotel,Bodakdev

Ahmedabad. Not later than DT. 20.01.2026 17.00 HR

6 Draft / Pay Order from any Nationalized Bank in favor of MUNICIPAL COMMISSIONER, Ahmedabad, payable

at Ahmedabad, which shall be non refundable. The fees shall be paid at the time of submitting the tender.

CONTRACTOR'S SIGNATURE ADDITIONAL CITY ENGINEER

& STAMP (NORTH WEST ZONE)

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AHMEDABAD MUNICLPAL CORPORATION

MAHANAGAR SEVA SADAN

NORTH WEST ZONE

DETAILS OF BANK ACCOUT

1 Contractor's name

3 Telephone/ mobile no.

4 Permanent account no. (PAN no.)

5 Name of the bank

6 Branch name and address

11 Contractor/ supplier's signature

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TENDER DECLARATION FORM

Additional City Engineer

North West Zone

Ahmedabad Municipal Corporation

Rajmata vijyaraje Sindhiya bhavan,

Nr.Atithi dining hall, Judjes Bunglow Road, Bodakdev

Name of Work: SUPPLYIG AND INSTALLATION OF RAIN WATER HARVESTING MODULE

AROUND THE LAKES OF DYCE-2 WARDS IN NORTH WEST ZONE (A.R.C)

I/We the undersigned have carefully gone through and clearly understood the Tender documents of

above mentioned project comprising of Notice Inviting tenders, Articles of Agreement, Scope of work, Definition

of terms, notes Instructions/Information to Bidder, Condition of Contract, special condition of contract,

Appendices, Specifications, Bill of Quantities, furnished by AHMEDABAD MUNICIPAL CORPORATION.

I/We do hereby offer to execute and complete the whole of the work within the time specified all in

accordance with the specification, designs, drawing and instruction in writing referred to in the said document

and with such materials as mentioned for, at the respective rates which I/we have quoted in the Price Bid or at

such other rates as maybe fixed under the provisions of these conditions.

In the event of this tender being accepted I/We agree to enter into an agreement and when required,

execute the contract, according to agreement as or in default where of I/we bound myself/ourselves to forfeit

the "Earnest Money Deposit."

I/We understand that if I/We shall not enter in agreement within fifteen days or as decided by AMC

from the date of receipt of letter of acceptance, you will forfeit the earnest money paid by me/us and take

necessary action as deemed fit.

I/We have enclosed a Demand Draft / Bank Guarantee as an “Earnest Money Deposit", for the sum as

mentioned in NIT, the full value of which is to be absolutely forfeited to the Employer If I/We fail to commence

the work specified. Otherwise the Employer shall retain the said sum, as on account of such Security Deposit as

provided for in the aforesaid documents.

I/We agree not to employ sub-contractors other than those that may be approved in accordance with

conditions in the aforesaid documents.

I/We understand that Municipal Commissioner is not bound to accept the lowest or any tender, which

are received. I/We also understand & agree that Municipal Commissioner Reserves the right to allot number of

tenders to successful bidders at his sole discretion in case if I/We am/are lowest in more than one tender.

I/We am/are bound to execute the job if the work order is issued within 90 days from the date of

opening of the tender.

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

material (i.e. Aggregate, Sand etc.) And any other taxes prevailing and from time to time on such items on

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

Yours faithfully

Seal and Sign of Contractor

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AHMEDABAD MUNICIPAL CORPORATION

ENGINEERING DEPARTMENT

GENERAL CONDITION

1. Contractor shall produce the relevant registration certificate of AMC / State Govt /Central Govt.

2. Contractor shall register the work to labour commissioner as per labour act.

3. Contractor shall not sub-let the work without permission of the authority

4. Contractor should have sufficient skilled and unskilled laborers so that he shall start work at

different sites simultaneously. Contractor's having labour force available during festivals shall only

apply. Contractor can not stop the work due to on availably of labour force.

5. Bitumen rate difference will be paid as per tender conditions, if applicable.

6. Advance payment / machinery advance will not be paid.

7. Payment of running bill will be made as per recent A.M.C. policy in force.

8. No extra payment will be made due to increase of central / state Govt. Taxes.

9. If the work is not completed within time limit the penalty will be recovered from immediate bills of

10. If the material i.e. MH cover C.C block etc. supplied from Municipal Corporation store then

contractor shall not claim for any extra rate for non execution of such item, partly/fully.

11. In the specifications, "as directed"/"Approved" shall be taken to mean, "as directed"/approved" by

the Engineer-in-charge.

12. Wherever a reference to any Indian Standard appears in the specifications, it shall be taken to mean

as a reference to the latest edition of the same in force on the date of agreement.

13. In "Mode of Measurement" in the specifications wherever a dispute arises in the absence of specific

mention of a particular point or aspect, the provisions on these particular points, or aspects in the

relevant Indian Standards shall be referred to.

14. All measurements 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. Mt.

(iii) Cubic Contents ------0.01 Cu.Mt.

15. The distance, which constitutes lead, shall be determined along the shortest practical route and not

necessarily the route actually taken. The decision of the Engineer-in-charge in this regard shall be

taken as final.

16. Where no lead is specified, it shall mean "all leads"

17. Lift shall be measured from plinth level.

18. Definite particulars covered in the items of work, through not mentioned or elucidated in it,

specifications shall be deemed to be included there in.

19. Reference to specifications of materials as made in the detailed specification of the items of work is

in the form of a designation containing the number of the specification of the material and prefix

20. Approval to the samples of various materials given by the Engineer-in-charge shall not absolve the

contractor from the responsibility of replacing defective material brought on site or materials used

in the work found defective at a later date.

21. The contract rate of the item of work shall be for the work completed in all respects.

22. No collection of materials shall be made before it is got approved from the Engineer-in-charge.

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

shall be stone at site of work in a systematic manner. Materials shall be stored in such a manner as

to prevent damage, deterioration or intrusion of foreign matter and to-ensure the preservation of

their quality and fitness for the work.

24. Materials, if and when rejected by the Engineer-in-charge, shall be immediately removed from the

site of work within 24 hours.

25. No materials shall be stored prior to, during and after execution shall be kept in sufficient numbers

and in good working condition on the site of the work.

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26. All works shall be carried out in workmanlike manners per the best techniques for the particular

27. All tools, templates, machinery and equipment for correct execution of the work as well as for

checking lines, levels, alignment of the works during execution shall be kept in sufficient numbers

and in good working condition on the site of the work.

28. The mode, procedure and manner of execution shall be such that it does not cause damage or over

loading of the various components of the structure during execution or after completion of the

29. All necessary safety measures and precaution (including those laid down in the various relevant

Indian Standards) shall be taken to ensure the safety of men, materials and machinery on the works

as also of the work itself.

30. The testing charges of all materials shall be borne by the Contractor unless recovery at one percent

towards testing charges is separately made.

INSTRUCTION TO TENDERERS

TENDER VALIDITY PERIOD:

The tender shall be kept valid for acceptance for a period of One Hundred Twenty Calendar days

(90) from opening of price bids.

SECURITY DEPOSIT

Within 10 days of receipt of Acceptance from the Corporation, the successful tender shall furnish to

the Corporation Security Deposit of 5% (five percent) of the contract price cheque or Bank

Guarantee, pay order, or demand draft of Nationalized Banks and Schedule Banks only.

CONTRACTOR'S SIGNATURE ADDITIONAL CITY ENGINEER

& STAMP (NORTH WEST ZONE)

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AHMEDABAD MUNICIPAL CORPORATION

ENGINEERING DEPARTMENT

GENERAL SPECIFICATION

Time limit for the work shall be 12 Month after the order to start the works. Progress of work should be in

proportion to time limit.

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.

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.

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

The tender for the work shall remain open for a period (120) 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 the work is not carried out within the specified time limit. from the date of order to start the work the penalty

of Rs.- ( As per Form - B1) per day of delay shall be recovered 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 rejected.

iii) In case of tender downloaded from website, tender fee & EMD should be submitted in form of demand

draft or in cash.

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.

CONTRACTOR'S SIGNATURE ADDITIONAL CITY ENGINEER

& STAMP (NORTH WEST ZONE)

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SPECIFICATIONS OF MATERIALS – CIVIL

This section gives detail specifications for mainly used materials, for other materials refer Building

Specifications.

For materials relevant specification of Building Specification shall apply.

TECHNICAL SPECIFICATIONS

NAME OF THE WORK:- SUPPLYIG AND INSTALLATION OF RAIN WATER HARVESTING MODULE

AROUND THE LAKES OF DYCE-2 WARDS IN NORTH WEST ZONE (A.R.C)

1. Ahmedabad Municipal Corporation has proposed implementation of advanced modular Rainwater

harvesting (RWH) system in Ahmedabad city. The scope of this tender includes the following a. Identify the

suitable location for installation of advanced rainwater harvesting structures including infiltration tank with

proper reconnaissance survey & as approved by Employer/Engineer. b. Preparation of plan, detailed

designing and GFC of the storm water network, storm water pumping station, rising main, rainwater

harvesting (RWH) structures, including location, appropriate spacing, connections etc all complete c.

Construction of storm water drainage network using, arch shaped perforated drainage pipes rainwater

harvesting system made up of of “reused” poly propylene materials with proper inflow, filtering & outflow

arrangements including catchpit cum Manholes and allied Civil Works for the same and road restoration.

The basic component in the form of silt catch pit cum manhole has been further remodeled with Rainwater

harvesting cum infiltration tank arrangement to recharge the groundwater aquifer. d. Design, installation

and commissioning of storm water drainage pumping station for disposal of storm water runoff including

but not limited to inlet chamber, wet well, office cum panel room, boundary wall, internal roads etc. The

scope of work shall include civil, mechanical, electrical, instrumentation work etc all complete. e. Providing

and laying Rising main of 800 mm diameter DI pipe with all associated work from pumping station to

existing storm water drainage manhole near Grand Hotel. The scope also includes SG highway crossing by

manual pipe pushing work. f. Contractor shall assist Employer/Engineer in liasoning work for getting

approval for highway crossing from competent authority. g. An innovative solution of “Integrated Storm

Water Infiltration Drain and Tank system along with Catch Pit” by the use of primarily “reused” poly

propylene materials is proposed.

2. Stormwater management systems essentially function to manage surface runoff in urban areas where run-

off cannot infiltrate due to the impermeable surfaces. Traditional stormwater management was mainly to

drain high peak flows away. Unfortunately, this only dislocates high water loads. Modern approaches or

the recent sustainable urban development solutions aim to rebuild the natural water cycle, i.e., to store

runoff water (e.g. retention basins) for a certain time and to recharge ground water (e.g. infiltration tanks)

which will eventually reduce the urban flood inundation. Such infiltration-based storm water management

systems offer considerable solution on: a. Proper drainage of surface run-off b. Possibility to recharge

groundwater 108 c. Treatment of stormwater in a very early stage d. Avoids damages on infrastructure

(private properties, streets, etc.); e. Flood inundation prevention

3. The Contractor’s scope of work shall cover planning, designing, supply of all materials, equipment’s, plant,

labour, transport, disposal of debris and excess earth, tools and all other services necessary for the

complete execution of works, including all surveying and setting out necessary for the works, cleanup of

working areas, making good of the surface as required after completion of the works with all safety

precautions & Environmental protections. All work shall be executed as per the drawing approved by the

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4. The Contractor is required to quote item rates for the items listed in Price bid of this tender. If so desired,

Contractor is advised to visit the site, ascertain the required for carrying out the work at his own cost

before submitting the bid.

5. The contractor shall prepare detailed layouts showing of location of storm water catchpit cum manhole

with RWH structure and its connection with Storm water drainage conveyance system using arch shaped

perforated pipes. The catch pit cum manhole RWH structure shall be numbered with required information

such as coordinates, top level, road level and storm water drainage size along with Typical details.

6. The capacity of RWH structure below the silt catch pit cum Manhole shall be minimum 3000 liters

7. Drawings shall be submitted withing 20 days of finalization of location/road with Engineer. Engineer shall

approve the drawings after due review

8. The contractor shall carry out the work in accordance with the Detailed Design and Good for Construction

drawings to be prepared by the Contractor.

9. The contractor shall be fully responsible for the performance of the selected equipment (installed by him)

at the specified parameters and for the efficiency of the installation to deliver the required end result.

10. The bidder shall note that the scope shall also include any other work or item / material as required to

complete the work in all respects for the supply and for satisfactory installation, testing and commissioning

& satisfactory operation of specified equipment / pumping station.

11. Scope shall include Inspection of equipment’s as applicable as per tender specification at manufacturer’s

works by Third Party Inspection (TPI) agency and AMC representative. Expenses incurred towards the

inspection like commercial fees, To & Fro charges, lodging & boarding, etc., delivery of equipment at site or

store as instructed by Engineer In - Charge, unloading & storage at site, etc. shall be borne by contractor.

12. Scope of work shall include submission of Technical Datasheet duly filled-in for major equipment’s in the

format given in Tender Technical Specification at the time of Drawing/ Document approval.

13. The WORK includes excavation, drilling, filling, other necessary construction works for the structure

mentioned above and all other items of work though not specifically stated, but required for the

satisfactory completion of works. Contractor shall be entirely responsible for coordinating all activities with

the other contractors / vendors of the project, which shall include adherence to overall work schedule,

correlating and accommodating interdependent activities between other works and Civil works, ensuring

successful completion of works and satisfactory operation of systems etc.

14. During the Defect Liability Period, Contractor shall inspect all the works carried out by them in every three

months interval or as instructed by the Engineer. During inspection, Contractor shall prepare and maintain

the records of the defects, if any. These records shall get certified from Engineer. Contractor shall make

good, repair or replace the RWH system or any component as required identified during inspection and

required for *proper function of the collection and RWH system to the satisfaction of Engineer.

15. Taking and furnishing, necessary colour photographs before start, during construction and after completion

of each of the activities and whenever required as deemed necessary and submitting coloured

photographic work progress report along with RA bill.

16. Carry out operation and maintenance of entire system for a period of 5 years in accordance with all supply

of spares, tools, consumables, lubricants, manpower, etc. (at free of cost), after completion of successful

execution, installation, trial run period and commissioning of works.

17. The O&M Period shall be commence after successful completion of trial period of SPS and storm water

drainage network and on issue of commissioning/completion certificate of capital works i.e., storm water

drainage system, pumping station and rising main. The spares, tools and furniture etc. as applicable as per

SOQ shall be handed over to Employer on commissioning of project / before start of O&M period.

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Arch shaped Perforated drains

1 General The Infiltration Tunnel System consists of interlocking tunnels and end plates, injection-moulded

from recycled polypropylene as shown in Tender drawings. The characteristics and material properties of

the system components are given in Table 16 and Table 17. Table 16: Characteristics of system components

Characteristic (unit) Tunnel End plate Overall length (mm) 1200 64 Installed length (mm) 1160 40 Nominal

width (mm) 800 674 Nominal height (mm) 510 485 Span (mm) 700 — Rise (mm) 445 — Foot width (mm)

100 — Maximum wall thickness (mm) 5 5 Pitch of corrugations (mm) 225 — Nominal mass (kg) 10

Maximum cut-out diameter for end plate (mm) — 300 Nominal storage volume (m3) 0.3 — Table 17:

Material properties of system components Property Test method Infiltration tunnel End plate Density

(kg·m–3) ISO 1183-3 0.91 g·cm3 0.91 g·cm3 Tensile strength (MPa) ISO 527-2 24 MPa 24 MPa Tensile

modulus (MPa) ISO 527-2 1100 MPa 1100 MPa Tensile strain ISO 527-2 5% 5% Melt flow rate ISO 1133 5-17

g·10 min 5-17 g·10 min 148 Property Test method Infiltration tunnel End plate Charpy impact resistance

ISO 179-1 3kJ·m2 3kJ·m2 50 year creep modulus (MPa) ISO 899-1 166 MPa 166 MPa The tunnels are

designed so that they lock together longitudinally, and are pre-marked on the top for cut-outs 100 and

mm in diameter. The end plates are pre-marked to enable 100, 200 and 300 mm diameter holes to be cut.

The specification for the sub-base and surround material by the Certificate holder is crushed stone to BS EN

13242: 2013, Grade 8/16. Items used with the units to form a stormwater management system, but

outside the scope of this Certificate, include: a. surface water connection pipework b. permeable geotextile

and fleece c. air vent and ventilation pipework d. silt trap e. infiltration inlet modules f. flow

control/chamber devices.

2 Manufacture The system components are manufactured by pressure-injection-moulding from recycled

polypropylene material to a defined specification. 14.3 Delivery and site handling The tunnel modules are

supplied to site stacked on pallets of 30 or 40 units (see Figure 1), together with the appropriate number of

end plates. Each pallet carries a label stating the product name, part number, quantity, weight, production

date and time, and operator’s initials. Material

Figure 1: Units stacked on pallett

a. All stacks should be carefully placed on level ground, and must not be stacked on top of each other. Stacks

should be dismantled in the vertical orientation.

b. The components contain an inhibitor to resist the effects of ultraviolet light for up to 12 months. However,

prolonged storage in direct sunlight and high temperatures should be avoided.

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c. The components should not be stored near fuel bowsers, fuel tanks or other solvents to avoid potential

chemical spillages.

d. Individual components may be manually handled using normal handling precautions.

e. The components are resistant to damage likely to be caused during normal handling. However, they should

be stored in locations where impacts from vehicles and other construction plant will be avoided.

f. Prior to installation, all units should be checked for damage. Damaged or defective units must not be

installed. Structural performance The perforated pipes shall be designed to carry all loads that will be applied,

including dead and live loads based on location i.e., landscaped or trafficked areas and must. Minimum and

maximum cover depth based on type of live load is shown in Table 18 and Table 19 Table 18: Minimum and

maximum cover depths (m) to the crown of tunnel Cover depths (m) Pedestrians Cars up to 3000 kg (3/3)(2)

Vehicles up to 12000 kg (12/12)(2) Vehicles up to 30000 kg (30/30)(2) Vehicles up to 60000 kg (60/30)(2)

Minimum cover for angle of shearing resistance of 35° 0.50(1) 0.50 0.75 1.00 1.00(3) Minimum cover for angle

of shearing resistance of 40° 0.50(1) 0.50 0.75 1.00 1.00 Maximum cover for angle of shearing resistance of 35°

2.90 2.90 2.60 2.60 2.60 Maximum cover for angle of shearing resistance of 40° 2.90 2.90 2.60 2.60 2.60 Notes

150 a. It is recommended that 0.5 m minimum cover is used to prevent physical damage to the system by

excavation. However, calculations confirm 0.3 m is adequate and could be used at the discretion of the

installation design engineer (or suitably qualified person). b. Loading category in accordance with DIN 1072. c.

The minimum cover depth requirement is 1.0 m for locations subject to significant traffic loading. Table 19:

Basis for values given in Table 12.3 Traffic category Distributed load (kN·m²) Wheel load (kN) Tyre contact area

(m) Density of backfill soil (kN·m3) Soil friction angle (degrees) Non Trafficked 5 1.4 0.15 x 0.15 20 30/40

10 100 0.20 x 0.60 20 30/40 Notes: Load factors were applied as follows: a. 1.35 for soil loads b. 1.50 for

distributed load and wheel loads c. Design load for 50 years (including safety factor of 2): 75 KN·m². The

imported material used in foundation, surrounding and backfill to the underside of the base course must be

clean and well graded crushed stone in compliance with BS EN 13242: 2013, Grade 8/16. A suitably-qualified

and designated engineer is responsible for determining the bearing capacity of the subgrade and to verify that

the thickness of imported fill in the foundation is adequate. The material at the subgrade level is exposed and

evaluated for suitability, on which a 100 mm layer of clean well graded crushed stone (8 to 16 mm) is placed

and compacted to give a horizontal solid base for the tunnel sections to be laid on. These are covered with the

geotextile fabric, and the rest of the gravel is placed in layers and compacted up to the bottom of the sub-base.

The system requires a geotextile wrapping to: a. allow the water infiltration into adjacent ground b. prevent

silt that may be contained in the surface water run-off from contaminating the surrounding soil, in addition to

reducing its permeability c. prevent silt entering the units from surrounding soil. The selection of suitable

geotextile material as per Table 20 for a specific system should be considered carefully, particularly with

reference to the surrounding soil properties and performance requirements. The following points are to be

considered in the selection: a. pore size - this should be designed and specified to assist infiltration and to

prevent migration of fine soil particles b. permeability and breakthrough head - the geotextile should not limit

the flow of water in the system and should have a permeability similar to, or greater than, the surrounding

ground c. puncture resistance - the geotextile must be able to resist piercing by sharp objects, eg stones in the

soil d. tensile strength - the geotextile should have sufficient strength to resist any imposed forces (eg from

wheel loads) e. durability f. specialist advice should be sought if surrounding soil characteristics exhibit a high

degree of fines/low infiltration capacity and/or there is risk of damage from ground contaminants. Table

Geotextile minimum specification for infiltration Tested property Minimum value Thickness (mm) Mass per

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unit area (g·m–2) 100 CBR puncture resistance (N) 1400 Cone drop test (mm) 34 Peak tensile strength (kN·m–2)

8 Opening size (µm) 130 Permeability vertical (ℓ·m–2·s–1) 110 Material 100% UV-stabilised polypropylene

Description Non-woven mechanically bonded Venting Adequate venting shall be provided to the system. As a

minimum, one 110 mm diameter air vent is required per 7500 m2 of impermeable catchment area to be

drained. Air vent connections and pipework for use with the system are outside the scope of this Certificate.

152 Venting should be positioned in a non-trafficked area, wherever possible. It is recommended that the

ventilation pipe is to be attached to the end plate through the template provided. One ventilation pipe would

suffice per line. Resistance to chemicals The components of the system are resistant to, and suitable for use in

contact with, the normal chemicals likely to be found in surface water. An assessment of the suitability for use

of the system on brownfield sites should be made only after a suitable site investigation (outside the scope of

this Certificate) to determine the possibility for chemical attack. Particular care must be taken where acids and

organic solvents are present at high concentrations. Further information can be obtained from the Certificate

holder. 14.5 Durability The structural properties of the recycled polypropylene used in the components of the

system will deteriorate with time, and this should be taken into account at the design stage by the application

of suitable material property safety factors. Contractor shall provide certificate from manufacturer that the

perforated pipes/tunnels will have a life of minimum 50 years. 14.6 Reuse and recyclability The system

components shall be manufactured from recycled polypropylene material, which is readily recyclable.

RWH Geo cellular Units

Providing & Fixing of reused polypropylene based rainwater harvesting structure including supply of base

plates, end plates etc of size 800 mm x 800 mm x360mm with minimum void ratio of 94.7%. The size of

complete unit shall be 1 X 1m X 3 m including filter material in sides. The module must be of injection moulded

type in one piece with internal columns. This type must carry the applied loads predominantly by closely

spaced internal columns. The individual units must be clipped together, as per the manufacturer’s

specifications and recommendations, to form a larger tank and also to prevent the units moving in relation to

each other during construction. The external framework must provide support for the geotextile used to

surround the tanks. The modular rainwater harvesting units must be combined with compatible shaft units for

inspection and access. They must fit in width and length to modular rainwater harvesting units to be included

in the formed tanks. 15.1 RWH design and shaft design The modules shall confirm to the following: a. Each unit

of modular rainwater harvesting must withstand the lateral stability 100 kN/m² in x- and y-direction for

ultimate compressive strength. Test must be carried out at 23C with a constant load rate of 500N/m2*s. b.

Supply a ratio of vertical strength to lateral strength of at least 3.5:1 and not more than 5:1. The ratio is defined

from ultimate compressive vertical strength to ultimate compressive lateral strength and relevant lateral

direction must be the weakest. c. The distance between columns – structural components withstanding the

vertical load – must be smaller than 120 mm to distribute the loading to all columns simultaneously. The

minimum number of columns per square meter must be 35. d. The requirements to the design of modular

rainwater harvesting unit modules has to be confirmed by short- term and long-term tests. If shaft modules are

built of modular rainwater harvesting units by cut-outs or other modifications, it is necessary to determine

ultimate compressive strength in all directions. Any stability degradation of the structure, analysed by

compressive load tests, due to the modifications and cut-outs are not allowed. There are different shapes and

geometrics available. no plate-systems or no systems with more than four assembling parts shall be used.

Materials a. The units used in modular rainwater harvesting tank system must be manufactured from recycled

or reused polypropylene mineral improved. The Contractor must submit a list of the proposed suppliers and

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sources of materials required for the execution of the works to the Engineer prior to plac ing orders for

b. The Manufacturer must demonstrate that they have suitable quality control testing procedures in place to

ensure that materials are consistent and will not cause reduction in strength. The properties of the material

used to manufacture the units that are tested in compression to determine the design criteria shall be

recorded. If materials are used that vary from these baseline properties, the units shall be retested to

determine the design parameters. c. The Manufacturer must have at least 2 in-house hydraulic compression

testing facility independently temperature-controlled to demonstrate accompanying quality control during

production. d. The Manufacturer must have experience in stormwater management for more than 20 years

and should have an international leading position in this section. e. modular rainwater harvesting infiltration or

attenuation unit should have a storage co efficient of not less than 96%. 15.3 Testing of Materials and Units

General There are a number of international independent testing organisations such as BBA in the UK, CSTB in

France and DIBT in Germany have evolved internationally acceptable methodologies. The Manufacturer must

have experience in certification processes with at least three listed independent testing organisations

mentioned above. Static Load Tests Static vertical load tests shall be carried out in accordance with the

recommendations of EN 17150:2019. The test methodology shall represent unrestrained loading condition –

no lateral restraint. A minimum of three samples shall be tested at a load rate of 500 N/s per square meter and

at a temperature of 23C+/-2C. a. Static horizontal load tests shall be carried out in accordance with the

recommendations of EN 17150:2019 when installed in the ground. A minimum of three samples shall be tested

at a load rate of 500 N/s per square meter unit surface in x and y direction. In case of high differences >20%

between x and y direction it is necessary to inform the engineer about the strong and the weak side.

Installation conditions must always consider the weak side. b. Creep tests must be carried out in accordance

with CIRIA C737 table 4.5, at a temperature of 23°C ± 2°C. c. If a full creep data set is unavailable, at least a

minimum of 2 creep tests should be undertaken with at least one of the tests achieving creep rupture. In this

instance the unit should only be used where the expected imposed permanent load does not exceed the creep

test load, taking into consideration the partial factors of safety. d. Design Life of the modular rainwater

harvesting infiltration SWD tunnel and storage tank must be minimum of 50 years.

Characteristic Design Parameters The characteristic ultimate compressive strength in vertical (z-direction) at

23°C for the geocellular units shall be a minimum of: Dynamic loading capacity Ultimate compressive Strength

at yield min. 420 kN/m² Note: This value must be achived after reducing the mean value by two times standard

value. Material Properties All material properties shall be tested regularly during granule production with high

frequency. It is necessary to determine the results of material in production, already included with all additives

and stabilizers and not only PP material without additives. Test results have to be recorded and kept for min.

five years. Material properties that shall be tested during manufacture are listed in the following table:

Characteristic Test parameters Test method Requirement Value Density Temperature (23 + 2)°C ISO 1183-1

Tensile strength at yield Speed Temperature 50 mm/min (23 ± 2)°C ISO 527 Elongation at break Speed

Temperature 50 mm/min (23 ± 2)°C ISO 527 Thermal stability (oxidation induction time) Temperature 200°C

ISO 11357-6 Melt flow rate (MFR) Temperature Loading mass 230°C 2.16 kg ISO 1133 Long-term analysis of min

3,000 h recommended is 10,000 h, for mechanical values must be analysed by notified bodies. Extrapolations

and estimations of values for granulate materials are only applicable from smaller concentrations of additives

to higher concentrations. It is permitted to extrapolate long-term analysis data of granulate materials without

additives instead of granulate material with additives. In addition to testing the raw materials the units must

also be tested as part of the manufacturer’s quality control procedures. Typical unit properties that must be

measured are listed below:

a. Raw Material properties as per table 3.11. b. Measurement of dimensions. c. Assembly test for finished

product. d. Measurement of mass of unit visual inspection for defects. e. Short-term compression tests.

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Manufacturing of Units The RWH units shall be manufactured in an ISO 9001 and ISO 50001 certified

production site(s). All production site(s) shall be regularly witnessed at least once per year by accredited

notified bodies. Witnessing of production sites is a guarantee to deliver high quality units from beginning to the

end of each project. The following documents and product data shall be submitted to the Engineer: a. Originals

of catalogues and engineering data sheets for manufactured items. Each item and option to be provided shall

be clearly marked and each item not to be provided shall be deleted. b. Documentation to show that products

provided meet the requirements for material, construction, operation and tests. c. Manufacturer’s installation

instructions for all items d. Certified reports for all tests and inspections designated herein, signed and sealed,

showing full compliance with referenced standards and specifications. e. Stress/ strain curves for vertical and

lateral compression. f. Creep test under sustained long-term loading All material shall be permanently marked,

by stamp or other marking, before dispatch from the manufacturer, displaying the following information as a

minimum (where applicable): a. The manufacturer’s name, initials, or identification mark. b. The classification

of material. c. The date of manufacture and batch. Geotextiles and Geomembranes Geotextiles and

geomembranes shall be in accordance to the below specifications: Geo-Textile Requirements Property Test

Method Unit Value Raw Material Polypropylene/Polyester 157 Property Test Method Unit Value Mass Per Unit

area EN-ISO 9864 or similar g/m2 Min. 1.200 Max Tensile strength md/cmd EN-ISO 10319 or similar kN/m

Elongation at max tensile strength md/cmd EN-ISO 10319 or similar % 60 Puncture force EN-ISO 12236 N

>11000 Displacement at static puncture strength EN-ISO 12236 mm 9 Detector tested - Yes Roll Size m Min.

width 4 m Md= machine direction, cmd = cross machine direction Only virgin, non-recycled, stable fibres The

required specifications must be certificated by the manufacturer for each delivered roll of geo textile. For the

approval of the proposed product, prior to order, the contractor has to supply the Engineer with the fallowing

documents regarding the manufacturer and the actual product, for approval procedures: • Certificate of the

production according to DIN EN ISO 9001-9004 or similar for the manufacturer: • Test certificate for the actual

material that is supposed to be ordered; • Data sheet for the proposed product (Including method of

manufacturing, composition of material, standards, test methods, tolerance) with product sample: Delivery,

Handling and Storage The transport, handling and storage of materials shall be carried out as follows: a. With

the manufacturer’s specifications and recommendations, subject to the approval of the Engineer. b. Effective

precautions shall be taken to prevent damage to the materials. c. All materials shall be subject to visual

inspection before off-loading on site and before storage and installation. The following procedures have to be

strictly followed for dealing with damaged material: 158 a. Material damaged during transportation shall not

be accepted and manufacturer has to be informed. b. Material damaged during handling and storage shall be

brought to the attention of the Engineer. c. Material showing signs of corrosion or deterioration during storage

shall immediately be treated to arrest and prevent further deterioration, or removed from site, as the Engineer

directs. d. Proposals for repair shall be submitted, in writing as a method statement, to the Engineer for

approval. e. No attempt shall be made to repair damage without the Engineer’s approval. f. If in the opinion of

the Engineer, the nature of any damage or deterioration is such that the condition of the material has been

impaired and cannot be repaired, the material concerned shall not be incorporated in the Works. g. All rejected

materials shall be immediately removed from the site. h. Damaged material shall be replaced or repaired by

the Contractor at his own expense at the discretion of the Engineer and such repairs (if allowed) shall be

carried out to the approval of the Engineer. 15.4 Installation a. Excavation, foundation/ base and backfilling

shall be as specified. b. Installation shall be in accordance with the manufacturer’s specifications and recom

mendations. c. For the ease of assembly and to avoid wrong assembly of untrained workers, it is mandatory to

use modules with integrated moulded columns (one piece design). d. It is also necessary to use identical

endplates and connectors for all design options and number of layers. It is not permitted to use different

connector types for different layers. It is also recommended to use only one type of endplates for every type of

configuration. Different type of endplates and connectors will confuse workers and wrong assembly can be

occurred. 16 Quality Control Plans Contractor shall submit for approval of Engineer Quality control plan. The

quality control plan shall list and define in sequential order all details specifications, process control activities,

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inspection and tests proposed to be performed on the equipment/ material starting from component

procurement and from testing stages to product dispatch. The quality control plan shall indicate and identify

the applicable standards, detailed description with diagram the procedure, acceptance criteria, extent of check

and record to be generated. The contractor shall within fifteen (15) days of placement of order submit the

following information to the Engineer. Descriptive list of the raw material as well as bought out accessories and

the names of sub suppliers selected from those furnished along with the 159 Specification. Type test

certificates of the raw material and bought out accessories. Quality Assurance Plan (QAP) with holds points for

Engineer’s inspection. 17 Inspection The inspection may be carried out by the Engineer or their representative

at any stage of manufacturing. The successful contractor shall grant free access to the Engineer/ its

representative/s at a reasonable notice when the work is in progress. Inspection and acceptance of any

equipment under this specification by the Engineer shall not relieve the contractor of his obligation of

furnishing equipment in accordance with the specification and shall not prevent subsequent rejection if the

equipment is found to be defective. Contractor shall, during inspection/ at any stage as sought by Engineer, will

furnish test certificates for all equipment including bought out items as included in this bid. However, the

Engineer reserves the right to insist for witnessing the acceptance/routine testing of bought out items. The

contractor shall communicate to the Engineer the details of all testing programme at least three (3) weeks in

advance. Engineer reserves the right to waive the inspection at any stage.

CONTRACTOR'S SIGNATURE ADDITIONAL CITY ENGINEER

& STAMP (NORTH WEST ZONE)

AHMEDABAD MUNICIPAL CORPORATION

ENGINEERING DEPARTMENT

GENERAL CONDITION

As per City Engineer’s circular no.-6/2011-12 Dt.24.6.2011 all terms & conditions will be

E:\Krunal_A.E\Tenders\Notice No.7-2025-26_19.1.26\T.No .307 Rain water harvesting module Dyce2 lake\Tender document T no 307 RWH module dyce2.docx

CONTRACTOR'S SIGNATURE ADDITIONAL CITY ENGINEER

& STAMP (NORTH WEST ZONE)

E:\Krunal_A.E\Tenders\Notice No.7-2025-26_19.1.26\T.No .307 Rain water harvesting module Dyce2 lake\Tender document T no 307 RWH module dyce2.docx