Providing ,Supplying and Laying of Pipe Line From Pratapnagar Tapping to Existing Sump at Rajpura Village Under MandR to Modhera Group RWSS programme

Estimated Cost : Rs.

Gujarat Water Supply & Sewerage Board

Zone-2, AHMEDABAD

Bid Documents for Design, Build & Operate Contract for

BREAK UP FOR INTERIM PAYMENTS ...............................................

Volume-III, Price Bid, Page No.-

Name of Work:- “Providing ,Supplying and Laying of Pipe Line From Pratapnagar

Tapping to Existing Sump at Rajpura Village Under M&R to Modhera Group RWSS

(1) The bidder shall quote his firm and fixed price for the entire work under this

Contract, defined in more details in various sections of this bid document.

(2) The rates and prices shall be submitted in the electronic formats given by n-

procure which is called Schedule-B. Rates and prices received in any other

formats will be rejected and the Bids will be disqualified.

(3) It will be entirely at the discretion of the Employer to accept or reject the

bidder’s proposal, without giving any reasons whatsoever and the bidder shall

not be permitted to withdraw his bid on this account.

be free supplied from the by client.

(5) In Schedule-B the Bidder shall quote prices for the items on lump sum / unit

rate as called for against the BOQ item.

in Schedule-B only will be considered for price evaluation & shall form a part

of the Contract Agreement.

and evaluation.

(8) The Bidder shall quote his prices for Operation & Maintenance in Schedule-C.

Bidder shall give year wise break up of cost for 5 years O&M in Schedule-C/1 to

Schedule-C/5 separately for Schedule-C. The total shall be inline to the price

quoted in Schedule-C. The total shall be carried forward to Schedule-B for

comparison and evaluation.

(9) Wherever for a particular item the quantities have been specified payment

shall be on unit rate basis and unit variation in quantity will be paid with pro

(10) Each item is to be individually priced online and the amounts shall be added

of prices shall be left blank except where the item description requires the

item to be priced on "as applicable” basis. The item shall not be priced if it is

“not applicable” to the bidder’s design, in which case the bidder shall add the

words “NOT APPLICABLE”. The wording in the item description is for subject

matter guidance only; clause references are indicative only and all other

relevant clauses shall also be referred to. The prices shall allow for all the

works covered under the bid and all liabilities and contractual obligations

whether separately specified or not. Items against which no prices are quoted

shall not be separately paid for and the bidder shall be deemed to have

covered the cost of execution of such items (according to the requirements of

the bid document) in the prices quoted for other items.

executed for satisfactory working/safety of the system as specified, will not be

separately paid for by the Employer when executed and shall be deemed to be

already covered by other items and rates listed in the price sheets No extra

Volume-III, Price Bid, Page No.-

payment shall be given for any item which is required to complete and perform

the pendency of the Contract. In case of any discrepancy noted in the various

corrections if any will be considered for financial evaluation of the bid.

(13) Schedule ‘D gives the basis of interim payment for construction of civil works.

(14) The bidder shall be deemed to have allowed in his price for provision,

maintenance and final removal of all temporary works of whatsoever nature

required for construction including temporary bunds, diverting water,

pumping, de-watering etc. for the proper execution of works. The rates shall

also be deemed to include any works and setting out that may be required to

be carried out for laying out of all the works involved.

(15) Prices shall be filled online only.

Contract, the Specifications and other sections of these bid documents and

these documents are to be taken as mutually explanatory of one another.

(17) The bidder shall interpret the data furnished and carry out any additional

survey work, or investigation work required at his own cost.

(18) The prices quoted shall also include the cost of materials utilized for testing.

(19) The bidder should acquaint himself with the site conditions including the

access to Work site. The successful bidder shall have to make suitable access

to work sites at his own cost. These accesses will be used by the other

contractors working for GWSSB.

and the prices shall include all the equipments / materials / accessories and

services required as per the specifications. The bidder shall fill in the price

schedule furnished.

(21) The amount to be quoted for O & M / year shall be as per Volume-II, General

Conditions of Contract, Clause No. 1, and Security Deposit.

(22) 1% of the value of work will be deducted from the Running bill against labour

cess which is non-refundable.

(23) Third Party Inspection / CSC agency will be deployed by GWSSB and charges of

the same will be borne by GWSSB.

(24) Any expenditure incurred by inspection/ CSC agency for the work misinformed

by the contractor and charges of inspection/ CSC agency without any work due

to misinformation shall be recovered from the contractor.

(25) The rates quoted shall be exclusive of GST, but inclusive of all other taxes,

duties which shall not be paid extra. While GST will be paid for admissible part

of actual work done at the approved tender rates and tender conditions of

price variations. GST shall be paid as per prevailing rates at the time of

payment. The TDS shall be deducted at source as per provision of IT rules and

(26) The rates should be quoted exclusive of GST but inclusive of all other taxes as

per Volume-1 (B), General Conditions of Contract, Clause No.

(27) The process requires that the bidder shall quote his price for the work

shall remain firm and fix during the entire period of performance of the

contract except price variation allowed for supply of MS/DI/PVC/GI pipe as per

Volume-II Clause No. 59, General Conditions of Contract.

Volume-III, Price Bid, Page No.-

(28) Payment shall be made for the components for which lump sump prices are

quoted, as per the schedule of payment. Total cost will be worked out on the

basis of work done of individual items and rates quoted against those

particular items only.

(29) Royalties: The contractor shall be liable to pay the royalty of the quarried

materials/ minerals used in the construction of works at the rates specified in

the Narmada Water Resources, Water Supply & Kalpsar Dept. Resolution No.

GEN-2010-595- (6)- M.I.Cell ( K-1) Dt. 29-4-2011 ( Gujarati Version Copy

enclosed) and shall be recovered from the running bills of the work from time

to time and remaining amount if any shall be recovered from the final bill

before releasing the security deposit of the work. The contractor shall furnish

the statement showing the quantity of quarried materials / minerals from

whom purchased ( with full address of the seller) and copies of the bills for

purchase to the Executive Engineer of the in charge of the work. The

contractor shall also furnish such additional information as regards royalty

payment to the competent authority.

(30) Agency shall have to take Insurance policy and intimate to GWSSB along with

the evidence within time limit. In case of non compliance entire responsibility

shall be rest with the agency and required amount shall be recovered from any

due amount of the agency.

(31) GWSSB can recover penalty amount from the agency for not taking the

insurance. Though the penalty amount is recovered, responsibility of the

agency for taking insurance shall be continued and will not be escaped from

the responsibility.

(32) The contractor shall apply fair means of stock maintenance and shall adopt

accounting standard as may be prescribed under GST Act as applicable in the

state of Gujarat. For arriving at the difference in procurement prices due to

introduction of GST it will be open for the Board to ask for original invoices,

lorry receipt, weigh bridge slips, payment details and such other documents as

may be required for the purpose.

(33) The claim of contractor regarding GST shall have to be backed by

documentary evidence substantiating the actual payment of tax duly certified

by the competent tax authority. The final decision regarding the quantum of

claim amount to be recovered or reimbursed shall be of the competent

authority of the GWSSB and shall be binding on the contractor.

Signature of contractor Executive Engineer

P. H. Works Division

Volume-III, Price Bid, Page No.-

Bidders are required to fill up all the blank spaces in this Bid Form.

THE EXECUTIVE ENGINEER,

PUBLIC HEALTH WORKS DIVISION,

SUB: “Providing ,Supplying and Laying of Pipe Line From Pratapnagar Tapping to Existing

Sump at Rajpura Village Under M&R to Modhera Group RWSS programme ’’

The bidder shall quote his firm and fixed price for the entire work under this Contract, defined in

more details in various sections of this bid document.

1. Having visited the site and examined the Bid Documents, Drawings, Conditions of Contract,

including Addenda/Amendments to the above, for the execution of the above Contract, we the

undersigned offer to design, Engineer, procure, construct, complete, commission, operate and

maintain the whole of the said works for 2 years from the date of commissioning including

defects liability period as given in Conditions of Contract and in conformity with the drawings,

Documents, including Addenda Nos.__________ (insert numbers) for Lump sum fixed price of

Construction including free trial run for three months or such other sum as may be ascertained

in accordance with the conditions.

2. I/We agree that

a) if we fail to provide required facilities to the Employer’s representative or any other

person/Agency by the Employer to perform on his behalf for carrying out the inspection and

testing of materials and workmanship.

b) if we incorporate into the Works, materials before they are tested and approved by the

Engineer’s representative.

c) if we fail to deliver pure water of required quantity according to the conditions/stipulations

of the Contract, the Engineer will be at liberty to take any action including termination of

Contract and impose at his absolute discretion any penalties, and/or reject the work.

3. We undertake, if our Bid is accepted, to complete and deliver the works in accordance with

the Contract within 15 months, inclusive of monsoons, from the date or receipt of Letter of

Acceptance issued to us by you.

4. We agree to abide by this Bid for a period of 180 days from the Last date of submission of the

bill and it shall remain binding upon us and may be accepted at any time before the expiry of

5. In the event of our Bid being accepted, we agree to enter into a formal Contract Agreement

with you incorporating the conditions of Contract there to annex but until such agreement is

prepared this Bid together with your written acceptance thereof shall constitute a binding

Contract between us.

6. We agree, if our Bid is accepted, to furnish performance /Security in the forms and of value

specified in the Clause 1 of Volume-II, “General Conditions of Contract”.

7. We have independently considered the amounts of liquidated damages shown in Appendix to

Bid and agree that they represent a fair estimate of the damages likely to be suffered by you

in the event of the work not being completed by us in time.

8. We understand that you are not bound to accept the lowest or any Bid you may receive.

Volume-III, Price Bid, Page No.-

(Name of the Person)

Company Seal _____________________

Duly authorized to sign Bid for and on behalf of (fill in block capitals)

Witness Signature ___________________________

Volume-III, Price Bid, Page No.-

Name of Work:- “Providing ,Supplying and Laying of Pipe Line From Pratapnagar Tapping

to Existing Sump at Rajpura Village Under M&R to Modhera Group RWSS programme ’’

The bidder shall quote his firm and fixed price for the entire work under this Contract,

defined in more details in various sections of this bid document.

Schedule showing the approximately the materials to be supplied to the contractor from

government stores for the work to be executed and the rate at which they are to be charged.

Rate at which the

Sr. material will be charged Place of

Particular Qty.

No. to the contractor Delivery

1. The contractor submitting the Tender shall see that the rate in Schedule-A are filled in by the

Engineer in Charge at the time of issue tender.

2. The contractor while submitting the tender shall provide his own arrangement at his own cost

for loading, unloading, and transporting safety to the site of work the cement stipulated in

3. Binding wire of 15 gauge of thinner gauge required for placing the reinforcement in position

shall be provided at his own cost.

4. All the materials required for the items other than labour in Schedule-A but available with the

dept. will be issued on request to the contractor. (for use in this contract only) at prevailing

market rates or departmental issue rates whichever is higher.

5. All the surplus materials supplied by the dept. As mentioned in schedule-A should be handed

over to the Department by the contractor at the Govt. stores as directed.

6. The materials mentioned in schedule-A shall have to be checked for their correctness and

soundness by the contractor before taking the delivery of the materials from the Government.

7. Necessary cement will be purchased by the agency at their own cost from open market.

8. The persons of firm submitting the Tender should see that rates in the above schedule are

filled up by the Executive Engineer, on the issue of form prior to the submission of the Tender.

9. Carting of above materials should be done by contractor at his own cost.

10. Contractor should return the balance materials in good and acceptable condition, otherwise

recovery at the double rates will be affected in view of Clause 12.4.

Signature of Executive Engineer Deputy Executive Engineer

contractor Public Works Division P.H.Sanitary Unit

Mehsana Modhera

Volume-III, Price Bid, Page No.-

NAME OF WORK :- Providing, Supplying and Laying of Pipe Line From Pratapnagar Tapping

to Existing Sump at Rajpura Village Under M&R to Modhera Group RWSS programme.

Qty. Unit Item Rate Per Amount

Providing and supplying in standard length ISI

mark rigid unplasticised PVC pipes suitable for

potable water with ring fit joint including cost of

rings, as per IS specification no. 4985/1988

including all local and central taxes, transportation,

freight charges, octroi, inspection charges, loading,

unloading, conveyance to the departmental stores

and including cost of jointing meterial etc.

(B) Test pressure 6 kg per sq.mt

4000.00 Rmt (i) PVC pipe 110 mm dia. 199.00 Rmt

Providing and supplying ISI mark CI D/F Sluice

Valves as per IS:14846 (Latest Edition) of

following class and diameter including all taxes,

insurance, transportation, freight charges, octroi,

inspection charges, loading, unloading,conveyance

to departmental stores, stacking etc. complete.

Sluice valves with ISI mark only (PN-1 With hand

wheel /cap operated (PD type short body)

No. 100 mm dia 3563.0

Providing and supplying at Store or site of work

including Freight, Loading, Unloading, Stacking,

Insurance and all taxes etc. complete.

(i) P. V. C. Tail Piece with P. V. C. Flange (ISI)

Heavy duty (Moulded)-110 mm dia.

2 No. (ii) PVC tee (moulded) 110X110 mm dia 407.00 No.

8 No. (iii) PVC bend 90 degree (moulded) 110 mm dia 519.00 No.

Volume-III, Price Bid, Page No.-

Manufacture, supply and delivery of cast iron

detachable joints(CID Joint),complete with joint

flange, dully drilled in synthetic rubber siling rings,

manufacture from styene butadine rubber (SBR)

and other required accessories such as nut bolts, etc.

confirming to IS specification 8794/ 1988 or it;s

latest revision, if any suitable for use with A.C.

pressure pipe, delivery of joints including it;s

accessories including loading, unloading, carting,

stacking, insurance, all taxes, octroi, etc. complete.

Long Coller oversize suitable to PVC/ HDPE

Providing and supplying C.I Air valves of approved

make &quality of following class and diameter

including all taxes, insurance, transportation, freight

charges, octroi, inspection charges, loading,

unloading, conveyance to deparimenial stores,

stacking etc. complete.

Air valves double acting (S2)

8.00 No. 25 mm dia. 661.00 No.

Excavation for pipe line trenches for water supply,

sewerage line, manhole etc. all with shoring and

struting if required as per required gradient and line

including safety provisions using site rails and

stacking excavated stuff including up to all required

lead cleaning the site etc. complete for all lifts and

strata as specified.

(A) In all sorts of soil and soft murrum

2400.00 Cum (1) Up to 1.50mt depth 89.00 Cum

Lowering, laying, fixing and jointing

PVC/uPVC/cPVC pipes and specials of following

class and diameter including cost of conveyance

from stores to site of works including cost of

labour, material, cement solvent, giving satisfactory

hydraulic testing as per ISI code.

4000.00 Rmt 110mmdia 19.00 Rmt

Lowering, laying and jointing in position following

C. I. / D/F Reflux valves, Butterfly valves, Sluice

valves and Air valves including cost of all labour,

jointing material, including nut bolts and giving

satisfactory hydraulic testing, etc. complete .

Volume-III, Price Bid, Page No.-

2 No. 100 mm dia 439.00 No.

Refilling the pipeline trenches incl. ramming,

2362.00 Cmt watering, consolidating desposal of surplus stuff as 22.00 Cmt

directed within a radius of 3 km.

Construction of valves chambers in brick or bela

stone masonary, locally available in C. M.

1:6.Foundation concrete 150 mm thick in C. C.

1:4:8of trap metal size 25 mm to 40 mm thick,

inside cement plaster in C. M. 1:3 and cement

pointing outside in C. M. 1:3 and top cover of

precast RCC slab 100 mm thick (with key hole in

two parts, each with handles or MS Bar etc.

complete as given size) Upto 1 Mt. depth from G.

L. to pipe invert level incl. complete civil works but

excl. cost of excavation and refilling.WIth cast in

situ RCC slab in one single piece with fixing of CI-

MH Frame and cover (excl. cost of CI-MH Frame

and cover) with 23 mm thick brick masonary wall

Size of 0.90 m x 0.90 m and 1.0 m deep

No. With precast slab in two parts 15 cm. thick 7738.0 No.

Providing and laying ordinary cement concrete

1:2:4 (1- Cement 2- coarse sand : 4- graded stone

0.90 Cmt aggregates 20 mm nominal size) and curing Cmt

complete excluding the cost of formwork in (A)

Foundation and plinth (more than 10 ton)

Lowering, laying & jointing in position C.I/ D.F

Sluice valves and air valves including cost of all

labour, jointing material, including nut bolts and

giving satisfactory hydraulic testing etc. comp.

Air Valves double ball flanged 25 mm dia

Total Estimated Rs.

Volume-III, Price Bid, Page No.-

I / We am / are willing to carry out the work at______________________________% above / Below

percent (should be written in figure and words) of the estimated rates mentioned above amount of my

/ our tender works out as under.

Estimated amount put to tender : Estimated amount put to Tender :

Deduct________% above Add________% above

Signature of Executive Engineer Deputy Executive Engineer

contractor Public Works Division P.H.Sanitary Unit

Mehsana Modhera

Volume-III, Price Bid, Page No.-

1. As mentioned in the Conditions of contract, the Contract being a lump sum type

turnkey Contract on EPC basis, the provision of measurement will be applicable only

for the assessment of value of work done for inclusion in any interim certificate for

part payment to the Contractor.

2. The Schedule specifies the procedure for all such assessment of the items specified in

3. Each item of Schedule-B has been divided into broad components. The Employer's

Representative shall assess the value of each component as indicated in paragraph

4. Percentages are indicated against each component of each items specified in Schedule

B, based on the Employer's best appreciation of the value of the component as related

to the total costs of the concerned item as whole. A head titled (any other item(s)) is

included in each breakdown of schedule and the tenderer shall at the time of

tendering indicate any additional items which he considers necessary but cannot be

covered by any of the heads indicated in the breakup.

5. The percentage breakup as indicated in the Schedule may differ from that

corresponding to the tenderer’s scheme and design and he should take this into

account while quoting his lump sum prices for the items specified in Schedule-B.

6. The contractor shall, after approval of his detailed designs and drawings furnish to the

Employer's Representative an initial bill of quantities to all major items, to be

reviewed and updated periodically with the Employer's Representative. This bill of

quantities will be used for assessment of percentage progress of the component at any

stage. By measurement jointly taken by the Employer's Representative and the

Contractor, mutually agreed and entered in the measurement books in the form and

by the method approved by the Employer's Representative, and signed jointly by both

Signature of contractor Executive Engineer

P. H. Works Division

Volume-III, Price Bid, Page No.-

Item No.1: Providing and supplying in standard length ISI mark rigid unplasticised

PVC pipes suitable for potable water with ring fit joint including cost of rings, as per

IS specification no. 4985/1988 including all local and central taxes, transportation,

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

departmental stores and including cost of jointing material etc. complete.

(1) 110 mm Dia 6Kg/Cm2

1. The contract shall be covering manufacturing, supplying and delivering of;

"Unplasticized PVC pipes along with elastomeric sealing ring (EPDM Rubber) Joint

bearing ISI Mark as per relevant Indian Standards with conforming to relevant

Indian Standard and sufficient quantity of Solvent Cement Solution"

2.1 UPVC PIPE WITH ELASTOMARIC SEALING RING:

The UPVC Pipes and UPVC Couplers to be manufactured supplied and delivered under the

scope of this contract shall be manufactured in accordance and conforming to IS:4985-

2000 or its latest revision or amendments with ISI certification mark. Elastomeric sealing

ring shall be in accordance with one of the types as per IS 5382 & it shall be EPDM rubber

ring with ISI mark.

2.2 UPVC COUPLERS AND SOLVENT CEMENT SOLUTION:

UPVC Couplers shall be conforming to IS:4985-2000 OR its latest revision/amendment.

Solvent Cement Solution shall be of a laboratory grade.

3. TEMPERATURE VARIATIONS:

All the pipes and couplers to be manufactured, supplied and delivered shall be subjected

to weather conditions like sun, dust, rain, wind as available in State of Gujarat. They shall

be also subjected to carry and convey drinking water under variable temperature

conditions ranging from 4 C0 to 45 C0.

4. TENDER PRICE:

Volume-III, Price Bid, Page No.-

The tender price shall include all labour, material and machinery cost necessitated to be

a) Proper manufacturing of the Ring fit PVC Pipes/Couplers/Elastomeric sealing ring

manufacturing facility preferably certified with ISO: 9001:2000.

b) All tests required to be undertaken at manufacturers premises.

c) Transportation of the pipes/couplers either by Rail and/or Road services with all the

covers duly and appropriately insured.

d) Delivery of pipes/couplers with proper loading, unloading, stacking at GWSSB store as

indicated by Engineer-in-charge.

e) Further towards proper maintenance and discharged and all contractual obligations.

5. DELIVERY SCHEDULE:

The delivery schedule shall be as under,

Material shall be offered for inspection within 30 days from the date of R.P.A.D./ Fax /

Courier/Speed Post/ e-mail of order whichever is earlier. The total delivery time

shall be considered as 30 days + time for inspection (i. e. from the date of inspection

offered to the date of issue of inspection release note) by Third party inspection

agency (Normally within one week but maximum within two-week time) + 12 days

transportation time. Extension of time limit on account of materials rejected during the

inspection will not be permitted. In case of emergency the delivery period can be less with

mutual consent.

The methods of marking all the pipes to be delivered under scope of contract shall ensure

that all the information will remain legible even after transportation, storage in open space

etc. In general, the legible and indelible marking upon the goods shall indicate the

a. Manufacturer’s name or trade mark.

b. Outside diameter.

c. Class of pipe and pressure rating.

d. Batch or lot number.

e. ISI certification mark on each pipe.

Volume-III, Price Bid, Page No.-

f. Purchasers mark as “GWSSB” be inscribed.

g. Any other important matter that the manufacturer or purchaser deems fit to be

7. PACKING AND HANDLING:

When the materials are transported at Railway Risk special packing as per IRCA rules are

absolutely necessary for which the extra cost, if any, shall be borne in total by supplier

The supplier shall have proper handling instruments/equipment’s and shall follow to a

suitable method of handling of pipes as may be approved by Engineer, while unloading

and stacking material in the stores.

8. MATERIAL & WORKMANSHIP:

8.1 General requirements of materials and workmanship shall mean any material or

article either raw or finished one required to be used in the manufacturing process of

8.2 All the material shall be new and of high quality.

8.3 In case, if material is not specified by relevant ISS for manufacturing part or the whole

as item, the supplier shall prepare specification in concurrence with manufacturer and

shall seek approval of Engineer prior to its use in the manufacture.

B TECHNICAL SPECIFICATION FOR UPVC PIPES

1. SUPPLY OF MATERIAL

The general requirement relating to supply of material and manufacture of UPVC Pipes

and shall be conforming to the relevant Indian Standard Specification No 4985-2000 or its

latest revision. The pipe shall be with ISI mark.

1.1 UPVC Pipes and couplers shall be conforming to and manufactured as per IS:4985-

2000 OR with its latest revision or amendments.

1.2 The dimensions, material compositions, tests etc. shall be as per IS:4985-2000 or with

its latest revision or amendments. Each pipe shall be marked with ISI certification mark.

1.3 The minimum & maximum wall thickness of the pipe shall be as specified IS:4985-

Volume-III, Price Bid, Page No.-

1.4 The colour of pipes & couplers to be supplied under the scope of this tender shall be

light grey as per Clause No. 10.1 i. e. Visual Appearance of IS 4985-2000.

1.5 PVC pipes with elastomeric sealing ring joint pipe it shall be as per IS specification

1.6 PVC Pipe should be purchase only as per attached Vender list herewith.

2. UPVC COUPLERS

2.1 The material composition for UPVC Coupler shall be as per the material composition of

UPVC Pipes as per IS:4985/2000.

2.2 The size, pressure & manufactures name shall be mark on couplers also to identify the

class of coupler either class and size should be marked on couplers too or colour bends

shall be as per the colour shown in IS:4985/2000 Clause No.10.1

3. SOLVENT CEMENT SOLUTION

The quality of solvent cement solution shall be of a good quality. For each size of pipes

offered for inspection sample coupler with two pieces from two pipes shall be coupled with

solvent cement offered for inspection (as these are supposed to be coupled in field) and

this coupled unit shall be kept for hydraulic test at requisite pressure for the stipulated

time and observed for confirmation to IS:4985-2000.

4. Elastomeric sealing ring

It shall be in accordance with one of the types (Type - 1 to Type – 6) as per ISS 5382. The

sealing ring shall be EPDM rubber ring. The sealing ring shall be with ISI mark. The

lubricant applied for jointing of elastomeric rubber ring shall be of good quality and

comply the following specifications.

a. Must have paste like consistency and be ready for use, preferably soap jelly.

b. Has to adhere wet and dry surfaces of UPVC pipes and rubber ring.

c. Must be non-toxic.

d. Must be water soluble

e. Must non affecting physio-chemical and organoleptic properties of drinking water

carried on the pipe.

f. Must not have an objectionable odour.

g. Must not harmful to the skin.

Volume-III, Price Bid, Page No.-

5. The Tests as per ISS 4985-2000 will be carried out by Third Party Inspecting

agency fixed by GWSSB as follows.

5.1 Sampling: Sampling should be done as per Clause No. 12 of IS 4985-2000.

5.2 Visual Appearance: The visual appearance of pipes shall be as per Clause No. 10.1 of

5.3 Opacity: The opacity tests for pipes shall be carried out as per Clause No. 10.2 of IS

5.4 Reversion Test: The Reversion Test shall be carried out as per Clause No. 10.4 of IS

5.5 Vicat Softning Temperature Test: The Vicat Softning Temp. Test shall be carried out

as per Clause No. 10.5 of IS 4985-2000.

5.6 Density: This test shall be carried out as per Clause No. 10.6 of IS 4985-2000. The

value shall be between 1.40 & 1.46.

5.7 Sulphated Ash Content Test: This test shall be carried out as per Clause No. 10.7 of

IS 4985-2000. The Sulphated Ash Content in PVC Pipe shall not exceed 11%.

5.8 Resistence to External Blows at 00 C: This test shall be carried out as per Clause

6. LONG TERM TEST:

a) (1) Type test and internal hydrostatic pressure test (as per clause No.11.1 of IS- 4985-

2000) and (2) Test for effect on Water (as per clause No. 10.3 of IS- 4985/2000) shall be

carried out as prescribed in IS-4985-2000 or its latest revision or amendments at fixed

intervals as specified by BIS.

However, GWSSB or Third party inspection / CSC agency fixed by GWSSB can verify the

certificates for these tests and representative of GWSSB or TPI can also remain present

during the tests if required and agency shall not have any objection for the same.

(b) Deposit for type test:

As per the clause No. 10(b) 1% of the value of the order quantity (excluding S.T.) is to be

kept in the deposit for type test till agency produces certificate based on samples collected

& tested as per BIS standards read with "SCHEME OF TESTING AND INSPECTION -

Volume-III, Price Bid, Page No.-

The rates quoted shall be inclusive of insurance, freight / carting charges, loading,

unloading & stacking at store or site of works with excise duty exemption in 110 mm Dia.

6kg/Sq.cm PVC Pipe but exclusive of CST/GST (VAT). The CST/ GST (VAT) & entry tax if

any will be paid extra as actual on production of documentary proof of payment.

Inspection of materials at factory site shall be carried out jointly by the third party

Inspecting Agency as fixed by GWSSB & Concerned Executive Engineer of GWSSB when

pipe Length is more than 1000 Mtr.)

The supplier on receipt of supply order from GWSSB shall intimate the third party

inspection agency & concerned Executive Engineer to carry out inspection as soon as

material is ready.

The inspection calls for PVC Pipes, Couplers, Solvent Cement and elastomeric sealing ring

shall be given. If the sealing rings are not offered for inspection, the inspection note only

for pipes will not be issued by third party inspection agency. Inspection will be carried out

normally within one weeks time and on receipt of such intimation the inspecting agency

will inspect the materials as per the specification and on satisfying itself, will mark the

inspection marks on all pipes and issue inspection note to supplier and concerned

During third party inspection if the material offered for inspection is rejected by third

party Inspection agency in that case the third party inspection agency will mark the

rejection marking and will take other precautionary measures so that the rejected material

cannot be used in GWSSB in future.

Sample coupler and two pieces from two pipes shall be coupled with Solvent Cement

offered for inspection (as these are supposed to be coupled in field). This coupled unit

shall be kept for Hydraulic Test at requisite test pressure for the stipulated time and shall

be observed for conformation to IS:4985. Sample of pipes shall also be coupled with

elastomeric sealing ring and this test shall be carried out accordingly.

As regards post-delivery quality inspection of pipes, samples shall be collected by

Concerned officer/ Quality Control & Vigilance Unit of GWSSB & will be tested at

CIPET/GIRDA or any other agency as decided by GWSSB. Counter Reference Sample shall

also be collected at the time of joint Pre-delivery inspection in presence of the third party

inspection agency, the concerned Executive Engineer and the manufacturer with their

signatures on the sample and shall remain in custody of the concerned consignee and will

be tested at CIPET/GIRDA or any other agency as decided by GWSSB in case of doubt. For

inspection purpose the manufacture has to go in for line stencilling for identifying size and

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class for proper separation. The stock of offered material shall be in manageable batches

with adequate space lie spreading the pieces etc. to permit proper inspection and

inspection authority to be present during stamping so as to ensure that only actually

cleared material is stencilled. The inspected material should not be loaded after sunset to

avoid inadvertent dispatch of wrong material.

The payment shall be made as per Rmt basis.

a) PRICE VARIATION FOR UPVC PIPES:(Applicable)

The price variation will be based on Prime Grade 67 GER 01 (Formerly known as A Grade 67 GER 092)

announced by RIL from time to time.

For purpose of variation, 900Kgs of PVC resin will be considered for one tonne of PVC pipes. In the event of

any variation, prices will be calculated as:

P Price Variation per tonne

A Current Price of PVC resin per tonne fixed by RIL (as published on GWSSB

Website) (Price without GST) as on dated which is offered for pipe inspection.

B Price of PVC resin per tonne as per as published on GWSSB Website (Price

without GST) on last date of online bid sub mission (i.e last date of online

submission as per the n- procure website log)

C Weight of pipe (In this case value of C= 1 Tonne)

Note: Price of PVC resin per tonne shall be considered after deducting regional subsidy if any

declared by the RIL.

Condition for variation in price of uPVC PIPES:

1. No Ceiling for Escalation for difference in the cost of uPVC Pipe will be applicable.

2. This Clause shall be operative from the date of Signing of Agreement and up to the expiry of original

time limit of Tender.

3. The contractor shall have to give undertaking at the time of claiming their bills for price

variation as under:

"We hereby certify that the uPVC resin of the uPVC Pipes for which the bill preferred is not purchased

through any Government or Semi Government undertaking at the concession rate"

4. Price Variation (payable/Recoverable) on Extra and Excess Items shall be allowed upto increase of 10%

(due to Excess + Extra) of overall total length of respective type of pipelines (PVC or DI or MS or HDPE)

mentioned in BOQ of the tender.

5. If the time limit is extended without penalty, then in such case price variation (positive/negative) on

the pipes shall be applicable restricted to the Bill of Quantities mentioned in tenders plus Excess and

Extra Subject to Clause 4 above. For that part of the extended time for completion, wherein delay is

attributable to contractor for the quantities procured during such time period, no positive price

variation (Extra payable to contractor) shall be admissible but negative price variation (Recovery

against quoted price) shall be admissible. For this purpose, days on which penalty is imposed shall be

counted backwards from the actual date of completion.

6. Price Variation shall be calculated by concern Division office and shall be verified by paying Authority

prior to making payment.

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7. This formula shall be used only for uPVC Pipeline for calculating Price Variation.

8. This clause will be applied to the work irrespective of the cost of the work.

9. The final amount of variation payable / recoverable shall be calculated only on basis of final

publication of resin rate announced by IPCL.

10. In case of any discrepancy/dispute regarding application of price variation clause, decision of concerned

Chief Engineer shall be final and binding to the contractor.

Item No- 2 & 8 Providing, supplying, Lowering, Laying & Jointing in position

following ISI mark CI D/F Sluice Valves, Butterfly Valves & Reflux Valves of

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

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

stores, stacking, all labour, jointing material, including nut bolts and giving

satisfactory hydraulic testing etc. complete. Sluice valves with ISI mark only (A1)

PN-1 With hand wheel /cap operated (PD type short body)

( 1) 100 mm dia C.I.D.F. Sluice valve Class PN-1.

The work shall be carryout as per the description of the item and as per specification laid

down in PWD Hand book vol. I & II and instruction of Engineer in charge.

The sluice valve shall be of approved quality and as per ISS 780 OR latest revision with ISI

mark with hand wheel. Rate including necessary freight loading unloading, carting,

insurance & all taxes etc. complete.

Sluice valve and should be procured from the approved and ISI marked.

For sluice valve necessary jointing materials such as nuts bolts rubber packing shall have

to be supplied by the contractor without extra cost. It shall be fixed as per the instruction

of Engineer in charge.

No leakage shall be observed if observed shall be rectified by the contractor without any

The payment shall be made on number basis.

Item No- 3 Providing and supplying at Store or site of work including Freight,

Loading, Unloading, Stacking, Insurance and all taxes etc. complete

Specials as per site requirement shall be supplied by the contractor. The specials should

be as per standard and shall be got approved by the Engineer in charge before being used.

The specials should be perfectly in working condition and having necessary threads holes

etc. as per standard.

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PVC specials should be as per IS standard specification and should be price make. All the

specials should be suitable for PVC pipes for which it is being used.

The payment shall be made on No. basis as per Payment schedule.

Item No- 4 Manufacture, supply and delivery of cast iron detachable joints(CID

Joint),complete with joint flange, dully drilled in synthetic rubber siling rings,

manufacture from styene butadine rubber (SBR) and other required accessories such

as nut bolts, etc. confirming to IS specification 8794/ 1988 or it;s latest revision, if

any suitable for use with A.C. pressure pipe, delivery of joints including it;s

accessories including loading, unloading, carting, stacking, insurance, all taxes,

octroi, etc. complete.

Joints as per site requirement shall be supplied by the contractor. The Joints should be

as per standard and shall be got approved by the Engineer in charge before being used.

The Joints should be perfectly in working condition and having necessary threads holes

etc. as per standard.

Joints should be as per IS standard specification and should be price make. All the

Joints should be suitable for PVC pipes for which it is being used.

1. The payment shall be made on No. basis as per Payment schedule.

ITEM NO. 5 Providing and supplying C.I. Air valves of approved make & quality of

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

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

stores, stacking etc. complete

25 mm dia Double acting Air valve

ISI mark C.I. Air valve shall be supplied by contractor.

Necessary bolts, nuts, rubber packing tools and plant shall be supplied by the contractor

without any extra cost.

The valve shall be fixed to the entire satisfaction as directed by Engineer in charge

Necessary excavation and refilling shall be done by agency at own cost.

Medium duty G.I. pipe of 3.00 mtr. Length with required coupling or flange at both ends of

the pipe shall be brought by agency at own cost.

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Necessary fitting of Air valve pipe shall be done by agency at own cost. Proper fixing must

be done. If leakage found, the same will be rectify by agency.

After laying GI pipe The raised G.I. pipe protected with RCC in CC 1:2:4 column of

mtr dia. size & 2.40 mtr height with base footing of 0.60 X 0.60 X 0.60 mtr at bottom with

required additional excavation incl. bolts, rubber packing, form work etc. complete.

Payment shall be made on Number basis.

Item No.:-6 Excavation for pipe line trenches for water supply, sewerage line,

manhole etc. all with shoring and struting if required as per required gradient and

line including safety provisions using site rails and stacking excavated stuff

including up to all required lead cleaning the site etc. complete for lifts and strata

1.1 The excavation for trenches will generally, refer to open excavation for trenches in

wet / dry conditions for pipe laying work.

2.0 CLEARING OF SITES:

2.1 The site on which the pipelines are to be laid and shown on plan and the area

required for setting out and other operations shall be cleared and all obstruction loose

stones and materials, rubbish of all kinds, stumps, brushwood as trees shall be removed

as directed the roots shall be entirely grubbed up.

2.2 The products of the clearing to restocked in such a place and in such a manner, as

directed by the engineer in charge.

2.3 In jungle clearings, all trees not specially marked for preservation, bamboo’s jungle

wood and brushwood shall be cut down their roots grubbed up. All wood and materials

from the clearing shall be the property of the Board shall be arranged as directed by the

Board Engineer or his authorized agent, the material pronounced as useful by the

Engineer will be conveyed and properly stacked as directed within the specified limit.

Unless materials will be burnt or otherwise disposed of as directed.

2.4 All holes or hollows whether originally existing or produced by digging up roots,

shall be carefully filled up with earth, well earth, well rammed levelled off, as may be

3.0 SETTING OUT:

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The center lines of all pipe trenches etc. shall be given by the Engineer-in-charge and it

will be the responsibility of the contractor to install substantial reference marks, bench

marks, etc. and maintain then as long as required true to line, level curve and slopes. The

contractor shall assure full responsibility for alignment, and dimension of trench.

The labour materials etc. required for setting out and establishing benchmarks and other

reference marks shall be arranged by the contractor at his own cost.

4.0 EXCAVATION:

4.1 The excavation incl. Bailing out of water for the pipe trenches shall also incl.

Removal of all materials of whatever nature and whether wet or dry condition necessary

for laying of pipelines exactly in accordance with alignment, levels grades and curves

shown on the plans or as directed by the Engineer-in-charge. Trenches shall be excavated

to the exact width and depth according to the size of pipe and the sides shall be left

vertical as for as possible or according to the angle of repose various soils. Unless there is

a specific extra provision in the contract for shoring and strutting or for cutting side slopes

the contractor shall at his own cost do the necessary shoring and strutting or cutting of

slopes to a safe of repose or both approved by the Engineer-in-charge. The contractor shall

notify the Engineer before starting excavation to enable him to take cross sectional levels

for purpose of measurements before the ground is disturbed. The bottom of the trenches

shall be levelled both longitudinally and transversely or slopped as directed by the

Engineer. The contractor shall at his own cost to remove such portions of boulders or

rocks, as are rectified to make the bottom of the trench level. No filling shall be allowed to

bring the trench to level. If by contractor’s mistake excavation is made deeper than shown

on the plans and if ordered by the Engineer the extra depth shall have to be made with

selected excavated stuff only with watering, remedying etc. as directed, by the Engineer

and at the cost of the contractor. Other hard excavation shall be cleared of all sorts and

loose materials and cut to firm surface, either level, stepped as directed by the Engineer.

The Engineer may order such charges in the dimensions and alignment of pipe trench as

may be deemed necessary to secure satisfactory cover over pipeline. The contractor shall,

at his own expense, make provision for bailing out of draining water and the trenches

shall be kept free of water, during laying work.

After each excavation is completed, the contractor shall notify the Engineer to that effect

and no laying of pipeline will be allowed to laid until Engineer has approved the depth and

dimensions of trenches level and measurements.

5.0 SHORING AND STRUTTING:

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Shoring & strutting and dewatering if required shall have to be carried out by the

contractor, for which any extra charge will not be paid

During excavation if water connections, sewage connections, telephone lines khalkuwa

(soak pits) etc. are damaged by the contractor, the same shall have to be restored by the

contractor without any extra payment.

6.1 The trenches shall be strongly fenced and red light signal shall be kept at night and

arrangement of watchman to prevent accidents should be done, sufficient care protective

measure shall be taken to see that the excavation shall not affect or damage the adjoining

structure. The contractor shall be entirely responsible for any injury to life and damage to

the properties etc. Necessary protection work such as guide ropes, crossing places,

barricades, caution boards etc. shall be provided by the contractor.

7.0 The excavation in all sorts of soil, hard murrum, soft rock or hard rock or any type

of soil shall have to be carried out up to the required depth by the agency

8.0 DISPOSAL OF EXCAVATED STUFF

8.1 No excavated stuff from trench are to be placed even temporarily nearer than

meter or greater distance up to 90 meter or as prescribed by the Engineer from the outer

edge of trench. All excavated material will be the property of the board. The rate of

excavated includes sorting out of useful materials and stacking then separately as directed

within specified lead. The excavated stuff suitable and useful for refilling or for other use

shall be stacked at convenient places. The materials not useful in any wet shall be

disposal off as directed by the Engineer from the outer edge of trench.

8.2 The site should be cleared off on completion of work.

9.0 ADDITIONAL REQUIREMENTS

At the joints of pipes, the trench shall be excavated to an additional depth of 15 cm. and

width of 30 cm. And length of 15 cm. beyond the edge of collar on both the sides or as

directed. The rate includes for such extra excavation made at the joints. The trenches

shall be excavated perfectly in straight line. The bottom of the trench shall be kept as per

invert level or as directed. To maintain the proper slope the usual method of site rails and

boning rods shall be adopted. The contractor shall have to provide and fix and maintain

sight rails and boning rod without any extra cost.

If the contractor fails or makes delay to give hydraulic test of the pipe line laid in any of

the section, without any genuine reason, he shall be responsible to get any part of the

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length trenches refill in such case i.e. before tasting for safety of pedestrian and/or

vehicular traffic as found necessary by the engineer-in-charge without any extra cost. If

found necessary any directed by the Engineer-in-charge. The contractor shall have to

excavate the refilled trenches, during hydraulic test without any extra cost.

At all road crossings, trenches shall be excavated only for half width of the road and pipe

shall be laid. The other half shall be excavated only after back filling over the laid pipeline

is done so as to make it suitable for the traffic. The contractor shall provide direction when

the pipeline is to be laid along the road as required and shall maintain the diversion or

any part of it, without any extra cost. At all road crossings, the pipe shall be laid below the

9.2 The contractor shall break the road surface by excavation chiselling to the exact

width and length as shown on the drawing or as directed by the Engineer-in-charge.

The excavated stuff shall be deposited in uniform layers to avoid mixing with other kind of

materials at non-objectionable place or as directed by the Engineer-in-charge.

10.1 Excavation in excess of the sanctioned dimensions shall not be measured not paid

for and if an ordered by the Engineer the contractor shall have to fill up the excess depth

with excavated stuff with watering ramming etc. (Completed as specified) for trench

without any extra payment to the contractor.

10.2 The item of excavation shall include unless and otherwise mentioned.

(a) Clearing of site

(b) Setting out work including all materials and labour.

(c) Providing and subsequently removing, shoring and strutting outing

(d) Excavation and removal and staking of all excavated stuff as directed.

(e) Necessary protection including labour materials equipment etc. to ensure safety

and protection against risk or accident.

(f) Providing facilities for inspection and damage to property if caused during progress

(g) Compensation for injury to life and damage to property if caused during progress of

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(h) Restoring of water supply connections, sewer connections, telephone

lines, khalkuwa soapiest etc. if damaged by contractor without extra

(i) Dewatering of excavated pit trench during the progress of work.

(j) Clearing the site on completion of works directed by the Engineer.

UNIT OF RATE: The unit of rate shall be per Cum.

Item No.:- 7 Lowering, laying and jointing PVC pipes and specials of following class

and diameter including cost of conveyance from stores to site of works including

cost of labour, material, except cement solvent, giving satisfactory hydraulic testing

as per ISI code.

Pipe and fittings shall be lifted from manufacturing site to site of work at his own cost.

During transportation any damage shall be occure to pipes for fittings the replacement of

pipes or fittings given by the contractor at-least own cost.

Before laying the pipes it shall be brushed throughout the length so that dust or soil can

be removed. The fittings should also be brushed. The pipes shall be laid in trenches in

The jointing material such as coupling & Solution etc. to be supplied by the contractor.

All the specials such as bends, tees, reducers etc. shall be fixed as per instruction of

engineer-in-charge in the pipeline. The pipe shall be hydraulically tested during the testing

no leakage shall be observed. If leakage observed, it shall be set right by the contractor at

its own cost as per the instruction of Engineer-in-charge.30% payment shall be made after

hydraulic testing of pipe line.

Payment shall be made on running metre basis.

Item No- 8 Lowering, Laying & Jointing in position following ISI mark CI D/F Sluice

Valves, Butterfly Valves & Reflux Valves of following class and diameter including all

taxes, insurance, transportation, freight charges, octroi, inspection charges, loading,

unloading, conveyance to departmental stores, stacking, all labour, jointing

material, including nut bolts and giving satisfactory hydraulic testing etc. complete.

Sluice valves with ISI mark only (A1) PN-1 With hand wheel /cap operated (PD type

(1) 100 mm dia C.I.D.F. Sluice valve Class PN-1.

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1.The work shall be carryout as per the description of the item and as per specification

laid down in PWD Hand book vol. I & II and instruction of Engineer in charge.

2.The sluice valve shall be of approved quality and as per ISS 780 OR latest revision with

ISI mark with hand wheel. Rate including necessary freight loading unloading, carting,

insurance & all taxes etc. complete.

3.Sluice valve and should be procured from the approved and ISI marked.

4.For sluice valve necessary jointing materials such as nuts bolts rubber packing shall

have to be supplied by the contractor without extra cost. It shall be fixed as per the

instruction of Engineer in charge.

5. No leakage shall be observed if observed shall be rectified by the contractor without any

The payment shall be made on number basisItem No- 9 Refilling the pipeline trenches

incl. ramming, watering, consolidating desposal of surplus stuff as directed within a

radius of 3 km.

The work shall be carried out as per the description of the item in Schedule-B & as per the

specification laid down in P.W.D. handbook vol. I & II.

The excavated earth shall be used after getting approval of the Engineer in charge proper

consolidation and watering shall be done.

The payment shall be made on Cum basis.

ITEM NO. 10 Construction of valves chambers in brick or bela stone masonry, locally

available in C. M. 1:6. Foundation concrete 150 mm thick in C. C. 1:4:8 of trap

metal size 25 mm to 40 mm thick, inside cement plaster in C. M. 1:3 and cement

pointing outside in C.

M. 1:3 and top cover of precast RCC slab 100 mm thick (with key hole in two parts,

each with handles or MS Bar etc. complete as given size) Upto 1 Mt. depth from G. L.

to pipe invert level incl. complete civil works but excl. cost of excavation and

refilling, with cast in situ RCC slab in one single piece with fixing of CI-MH Frame

and cover (excl. cost of CI-MH Frame and cover) with 23 mm thick brick masonry

wall in C.M.1:6

size of chamber 0.90 X 0.90 m and 1 Mt. deep with precast slab in two parts.15mm

size of chamber 0.60 X 0.60 m and 1 Mt. deep with precast slab in two parts.15mm

Volume-III, Price Bid, Page No.-

Materials such as Cement, sand, coarse aggregate, bricks, reinforcement, water etc. to be

used for this work shall be confirming to specification laid down in material section.

Chamber shall be constructed at places approved by the Employer’s Representative.

Where valves are provided for maintenance of the pipeline.

Excavation / P.C.C.

Excavation, shoring, dewatering/ P.C.C. etc. for the pits of chambers, laying of pipes and

fittings/specials shall be done in accordance with Employer’s Requirements described

elsewhere in the document.

The bed concrete 150 mm thick for chamber shall be done in C.C. 1:4:8 as directed by the

Engineer-in-charge using trap metal of 25 mm to 40 mm.

Bricks used for construction of manholes shall conform to the relevant Indian Standards.

They shall be sound, hard, and homogeneous in texture, well burnt in kiln without being

vitrified, table moulded, deep red, cherry or copper coloured, of regular shape and size and

shall have sharp and square and parallel faces. The bricks shall be free from pores, chips,

flaws or humps of any kind. Bricks containing ungrounded particles, which absorb water

more than 1/6th of their weight when soaked in water for twenty-four hours, shall be

rejected. Over burnt or under burnt bricks shall be liable to rejection. The bricks shall give

a clear ringing sound when struck and shall have a minimum crushing strength of

kg/sq.cm. The class and quality requirements of bricks shall be as laid down in IS:

The size of the brick shall be 23.0 x 11.5 x 7.5 cm. unless otherwise specified; but

tolerance up to 3 mm in each direction shall be permitted. Only full-size brick shall be

used for masonry work. Brick bats shall be used only with the permission of Employer’s

Representative to make up required wall length or for bonding. Sample bricks shall be

submitted to the Employer’s Representative for approval and bricks supplied shall

conform to approved samples. If required by the Employer’s Representative, brick sample

shall be tested as per IS: 3495 by Contractor. Bricks rejected by the Employer’s

Representative shall be removed from the Site within 24 hours.

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Mortar for masonry shall be as per IS: 2250. Chambers shall be constructed in brick

masonry with cement mortar (1:6) unless otherwise specified. Gauge boxes for sand shall

be of such dimensions that one bag containing 50 kg. of cement forms one unit. The sand

shall be free from clay, shale, loam, alkali and organic matter and shall be of sound, hard,

clean and durable particles. Sand shall be as approved by the Employer’s Representative.

If required by the Employer’s Representative sand shall be thoroughly washed till it is free

of any contamination.

For preparing cement mortar, the ingredients shall first be mixed thoroughly in dry

conditions. Water shall then be added and mixing continued to give a uniform mix of

required consistency. Cement mortar shall be used within 25 minutes of mixing. Mortar

left unused in the specified period shall be rejected.

The Contractor shall arrange for tests on mortar samples if so required by Employer’s

Representative. Re-tempering of mortar shall not be permitted.

All bricks shall be thoroughly soaked in clean water for at least one hour immediately

before being laid. The cement mortar for brick masonry work of Chambers shall be in the

proportion specified in drawing. Brick work 230 mm thick and over shall be laid in

English Bond unless otherwise specified. 115 mm thick brick work shall be laid with

stretchers. For laying bricks, a layer of mortar shall be spread over the full width of

suitable length of the lower course. Each brick shall be pressed into the mortar and

shoved into final position so as to embed the brick fully in mortar. Bricks shall be laid

with frogs uppermost.

All brickwork shall be in plumb and square/ circular unless otherwise shown on drawing

and true to dimensions shown. Vertical joints in alternate courses shall come directly one

over the other and be in line. Horizontal courses shall be levelled. The thickness of brick

courses shall be kept uniform. For walls of thickness greater than 230 mm both faces

shall be kept in vertical planes unless otherwise specified. All interconnected brickwork

shall be carried out at nearly one level so that there is uniform distribution of pressure on

the supporting structure and no portion of the work shall be left more than one course

lower than the adjacent work. Where this is not possible, the work shall be raked back

according to bond (and not saw toothed) at an angle not exceeding 45 degrees. But in no

case the level difference between adjoining walls shall exceed

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1.25 M. Workmanship shall conform to IS:

Brick shall be so laid that all joints are well filled with mortar. The thickness of joints shall

not be less than 6 mm and not more than 10 mm. The face joints shall be raked to a

minimum depth of 12 mm by raking tools daily during the progress of work when the

mortar is still green, so as to provide a proper key for the plastering to be done. When

plastering is not required to be done, the joints shall be uniform in thickness and be

struck flush and finished at the time of lying. The face of brickwork shall be cleaned daily

and all mortar droppings removed. The surface of each course shall be thoroughly cleaned

of all dirt before another course is laid on top. If mortar in the lower courses has begun to

set, the joints shall be raked out to a depth of 12 mm before another course is laid.

All joints in masonry shall be raked to a depth of 12 mm with hooked tool made for the

purpose when the mortar is still green and in any case within 48 hours of its laying. The

surface to be rendered shall be washed with fresh clean water free from all dirt, loose

material, grease etc. and thoroughly wetted for 6 hours before plastering work is

commenced. Concrete surfaces to be rendered will however be kept dry. The wall should

not be too wet but only damp at the time of plastering. The damping shall be uniform to

get uniform bond between the plaster and the wall.

The proportion of the cement mortar shall be as approved on relevant drawings. Cement

shall be mixed thoroughly in dry condition and then just enough water added to obtain a

workable consistency. The quality of water, sand and cement shall be as per relevant I.S.

The mortar thus mixed shall be used immediately and in no case shall the mortar be

allowed to remain for more than 25 minutes after mixing with water.

Curing of plaster shall be started as soon as the applied plaster has hardened enough so

as not to be damaged. Curing shall be done by continuously applying water in a fine spray

and shall be carried out for at least 7 days.

Plastering shall be done on inner face of brick masonry in cement mortar (1:3) and 15 mm

thick unless otherwise specified.

Cement pointing in C: M (1:3) shall be done on outside the chamber including racking out

joints, curing etc. complete as directed by the engineer-in-charge.

Cement Concrete Block

The C.C. blocks for the chamber shall be constructed in cement concrete of M15 grade to

take care of weight of valves.

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Pipe Entering or Leaving Chamber

Whenever a pipe enters or leaves a chamber, bricks on edge must be cut to a proper form

and laid around the upper end of the pipe so as to form an arch. All around the pipes,

there shall be a joint of cement mortar (1:2) 13 mm thick between it and the bricks.

Precast Reinforced Cement Concrete Slab with key holes

Precast Reinforced cement concrete top slab shall be casted in pieces for covering the

chamber. Necessary keyholes shall be provided at appropriate place for operation of

spindle of valve. The minimum thickness of slab shall be 100mm and same shall be casted

in C.C. of M20 grade. The required reinforcement shall be provided. The top & bottom

surface of precast slab shall be finished with cement mortar 1:3.

Measurement and Payment

Measurement shall be paid on number basis as per payment schedule.

Extra depth of valve chamber. beyond 1.00 mt. depth.

The work shall be measured and paid for additional meter depth of chamber beyond 1.0 m

depth. The work in general shall be carried out as per instructions & approval of engineer

ITEM NO. 11 Providing and laying ordinary cement concrete 1:2:4 (1- Cement 2-

coarse sand : 4- graded stone aggregates 20 mm nominal size) and curing complete

excluding the cost of formwork in (A) Foundation and plinth (more than 10 ton

1.The work shall be carried out as per the description of the item and as per the

specification laid down in PWD hand book vol. I & II (Revised) and as per the

instruction of engineer in charge.

2. The proportion of the concrete shall be one part of an approved quality Portland cement

four parts of sand and eight parts of coarse aggregate by volume.

3.The sand shall be course angular sharp free from any impurities such as foreign

materials dirt, dust etc.

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4. Coarse aggregates shall be of black trap stone. It shall be hard angular. It shall be free

from any impurities, such as dirt, dust or any foreign materials. The size of the coarse

aggregates shall be of 6mm to 20mm size.

5. The cement shall be of approved quality ISI mark Portland cement for RCC work. The

make shall be as approved by E.I.C.

6. The ingredient shall be mixed on water tight platform in dry condition and potable

shall be added & water cement ratio is to be maintained as per I.S 450-1980 / it

revise Addition in required quantity to achieve desired workability of mix. The mixing shall

be done the by machine mixer.

7. The necessary centering and form work shall have to be provided by the contractor

without any extra cost. It must be leak proof T & P articles required for the job shall

have to be brought by the contractor without any extra cost.

8. The work shall be carried out in such a way as to get the smooth surface without

requirement of plaster. During concreting, consolidation shall be done by the using the

needle vibrator.

The payment shall be made on Cumt. basis.

ITEM NO. 12 Lowering, laying & jointing in position C.I/ D.F Sluice valves and air

valves including cost of all labour, jointing material, including nut bolts and giving

satisfactory hydraulic testing etc. comp.

1.The work shall be carryout as per the description of the item and as per specification

laid down in PWD Hand book vol. I & II and instruction of Engineer in charge.

2.The Air valve shall be of approved quality and as per ISS 780 OR latest revision with ISI

mark with hand wheel. Rate including necessary freight loading unloading, carting,

insurance & all taxes etc. complete.

3.Air valve and should be procured from the approved and ISI marked.

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4.For air valve necessary jointing materials such as nuts bolts rubber packing shall have

to be supplied by the contractor without extra cost. It shall be fixed as per the instruction

of Engineer in charge.

5.No leakage shall be observed if observed shall be rectified by the contractor without any

The payment shall be made on number basis

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