51 Vikashsheel Deposit Work

Estimated Cost: Rs.

Executive Engineer

Public Health Works Division

Gujarat Water Supply & Sewerage Board

VOLUME-III PRICE BID

VOLUME-III PRICE BID

VOLUME – III – PRICE BID

2.0 BID FORM (WITH PRICE)

SUMMARY OF PRICE - Grand Summary of Schedules (Covering Schedule)

SCHEDULE-A - NIL

SCHEDULE-B - Bid documents for, Providing, Supplying, Lowering,

Laying & Jointing 140 mm and 125 mm Dia PVC Pipeline

6 kg/cm2 as a Gravity main Pipeline for Vaghpura and

Upaliyasara Section from Boosting Station to Vaghpura

Branch & Constructing of 3,00,000 lit. RCC UG Sump,

Pumping Machinery for UG Sump At Dudkha (For Village

Vaghpura and Upaliyasara Boosting), Ta- Sami District.

Patan . ( 2nd Attempt) under Deposit Work

SCHEDULE-C - Detailed Specification

SCHEDULE-D - PREAMBLE

- BREAK UP FOR INTERIM PAYMENTS

VOLUME-III PRICE BID

Name of Work: - Bid documents for, Providing, Supplying, Lowering, Laying &

Jointing 140 mm and 125 mm Dia PVC Pipeline 6 kg/cm2 as a

Gravity main Pipeline for Vaghpura and Upaliyasara Section from

Boosting Station to Vaghpura Branch & Constructing of 3,00,000 lit.

RCC UG Sump, Pumping Machinery for UG Sump At Dudkha (For

Village Vaghpura and Upaliyasara Boosting), Ta- Sami District.

Patan. ( 2nd Attempt) under Deposit Work

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) 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.

(2) 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.

supplied from the by client.

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

called for against the BOQ item.

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

Contract Agreement.

Schedule-B and shall be carried forward to Schedule-B for comparison and evaluation.

(7) 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 in line to the price quoted in Schedule-

C. The total shall be carried forward to Schedule-B for comparison and evaluation.

(8) 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 rata basis.

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

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.

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 payment shall be given for any

item which is required to complete and perform the project.

VOLUME-III PRICE BID

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

schedules, those in Schedule B will be considered and binding on the Contractor. The

any will be considered for financial evaluation of the bid.

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

(13) 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.

(14) Prices shall be filled online only.

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

are to be taken as mutually explanatory of one another.

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

work, or investigation work required at his own cost.

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

(18) 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

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

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

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

(21) 1% of the value of work will be deducted from the Running bill against labour cess

which is non refundable.

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

same will be borne by GWSSB.

(23) 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.

(24) The rates to be 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 condition of price variation. 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 GWSSB policy.

(25) The rates should be quoted exclusive of GST but inclusive of all other taxes as per by the

Contractor must be exclusive of GST but inclusive of all other taxes as per Volume-I (B)

General Condition of Contract, Clouse No.47

(26) The Ministry of Finance and Company Affairs, Department of Revenue, Government of

India has issued a notification No. 6/2007-Central Excise Circular No. 6/2007, dated 1th

March 2007 regarding the Central Excise Duty Exemption. By this notification, the

notification 659/50/2002 dated 6th September, 2002 has been amended and the earlier

notification 26/2009 dated 4th December, 2009 has been amended and the Items of

materials, instruments, apparatus and appliance, ancillary equipments and their

components/parts, etc. for setting up of Water Treatment Plants and the Pipes needed for

delivery of water from its source to the Plant and from there to the Storage facility (as

mentioned in notification No.6/2007) are exempted from Central Excise Duty subject to the

VOLUME-III PRICE BID

Certification by the Collector/ District Magistrate/ Deputy Commissioner of the District,

regarding its use on such Projects. Necessary Project Authority Certificate shall be made

available to the Contractor, as per the prevailing rules, to facilitate him to avail the benefit in

terms of Exemption of Central Excise. ( Circulars attached herewith )

(27) The Bidders shall have to quote the rates in this tender keeping in view of the Probable

rebate available to them as per the above Circulars of Government of India. The liability of

the Department is limited to issuing the Project Authority Certificate to the Contractor and

the Department does not take any responsibility whether the Agency gets the Excise

Exemption or not. The Complete responsibility rests with the Contractor/Agency only.

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

and fix during the entire period of performance of the contract except price variation

allowed for supply of MS pipe as per Volume-IB Clause No. 59, General Conditions of

(29) 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.

(30) 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.

(31) 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

(32) 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.

(33) Payment should be made after fund released by GWSSB.

(34) 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

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.

VOLUME-III PRICE BID

Signature of contractor Executive Engineer

P. H. Works Dn.,

G.W.S.S.B, Patan

VOLUME-III PRICE BID

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

THE EXECUTIVE ENGINEER,

PUBLIC HEALTH WORKS DIVISION,

SUB: Name of Work:- Bid documents for, Providing, Supplying, Lowering, Laying &

Jointing 140 mm and 125 mm Dia PVC Pipeline 6 kg/cm2 as a

Gravity main Pipeline for Vaghpura and Upaliyasara Section

from Boosting Station to Vaghpura Branch & Constructing of

3,00,000 lit. RCC UG Sump, Pumping Machinery for UG Sump

At Dudkha (For Village Vaghpura and Upaliyasara Boosting),

Ta- Sami District. Patan. ( 2nd Attempt) under Deposit

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

Schedules etc. 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 5 years from the date of commissioning including defects liability period

as given in Conditions of Contract and in conformity with the drawings, conditions

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

fixed price of Rs._________________.

Rupees_____________________________________________) for 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.

VOLUME-III PRICE BID

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 _________ 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 that period.

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-IB, “General Conditions of

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

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

(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

Name of Work Bid documents for, Providing, Supplying, Lowering, Laying & Jointing

140 mm and 125 mm Dia PVC Pipeline 6 kg/cm2 as a Gravity main

Pipeline for Vaghpura and Upaliyasara Section from Boosting Station

to Vaghpura Branch & Constructing of 3,00,000 lit. RCC UG Sump,

Pumping Machinery for UG Sump At Dudkha (For Village Vaghpura

and Upaliyasara Boosting), Ta- Sami District. Patan. ( 2nd Attempt)

under Deposit Work

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 material

Sr. will be charged to the Place of

Particular Qty.

No. contractor Delivery

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.

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

2 cost for loading, unloading, and transporting safety to the site of work the cement

stipulated in Schedule-A

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

position shall be provided at his own cost.

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

4 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.

All the surplus materials supplied by the deptt. As mentioned in schedule-A should be

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

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

6 soundness by the contractor before taking the delivery of the materials from the

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

VOLUME-III PRICE BID

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

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

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

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.

Those works will be executed which are found necessary at the time of execution,

contractor will not be entitle for any claim for saving in any items as per site condition.

The sub contract, if any given by the contractor would not create any right against the

13 The Amount Recoverable from the contractor by the Gujarat water supply and sewerage

board on any account shall be liable to be recovered from the amount payable to the

contractor / suppliers.

14 After passing the bill fund shall be demanded to higher authority payment shall be made

after getting fund from higher authority.

Signature of contractor Executive Engineer

P. H. Works Dn., G.W.S.S.B,

VOLUME-III __ PRICE BID

Name Of work :- Providing, Supplying, Lowering, Laying & Jointing 140 mm and 125 mm Dia PVC Pipeline 6 kg/cm2 as a Gravity

main Pipeline for Vaghpura and Upaliyasara Section from Boosting Station to Vaghpura Branch & Constructing of 3,00,000 lit.

RCC UG Sump, Pumping Machinery for UG Sump At Dudkha (For Village Vaghpura and Upaliyasara Boosting), Ta- Sami District.

Patan. ( 2nd Attempt) under Deposit Work

Sr Rate in Rs. Amount

Decription Qty Unit

No. In figure In Words

Preparing structural design of RCC Under Ground /

Partially under ground / above high ground level

Reservoir of required capacity as per relevant I.S.

standards and constructing the same, including

excavation in all types of soil strata (including rock)

including shoring strutting if required, for loose soil / to

protect from collapse, casting 100 mm thick P.C.C.

1.0 levelling course in M-15, Refilling the pit with proper soil

and disposing of the surplus stuff at all lead. Including

cement plaster in CM 1:2 with approved water proofing

compound to all over inside container (i.e. walls, base,

top slab/dome bottom etc. all). Including all types of

labour and material charges of lowering, laying, erecting

/ hosting and jointing of pipe assembly to inlet, outlet

overflow, washout and bye pass arrangement as per

hydraulic design.

Providing and fixing accessories, CI Manhole frame and

cover, water level indicator, adequate cowl type

ventilators or lantern type ventilator with stainless steel

jail. RCC chambers for valves. Providing and applying two

Coat Weather Proof Paint with Primer to the outside face

of structure. It also includes satisfactory water tightness

test as per relevant I.S. code and painting name of

scheme and capacity on the tank as per direction of

engineer in charge.

List of Indian Standards for Design of GSR / SUMP:-

The structural design of GSR shall be in accordance with

provisions relevant I.S.

VOLUME-III PRICE BID

(1) I.S. 3370, Part – 1 & 2, 2009 or latest revised.

(1.1) I.S. 3370, Part – 3 & 4, 1965 or latest revised.

(2) I.S. 456 – 2000 or latest revised.

(3) I.S. 1893 – 2000 – 1984 or latest revised

(4) I.S. 875, Part – 1 to 3, 1987 or latest revised.

General Specifications:-

(1) Water depth in container shall be adopted as per

data of tender. If water depth is not specified the

suitable water depth / acceptable to field engineer in

accordance with hydraulic requirement shall be

adopted for capacity.

(2) Shape of container (in plan) specified by in data

shall be adopted in absence circular shape shall be

(3) Size shall be fixed as per availability of space

(land area) at site / acceptable engineer in charge.

(4) Effect of overlapping of pressure bulbs on soil due

near by structure and proposed sump should be

(5) Care shall be taken that no damage should occur

to nearby existing structure. Compensation shall be

paid for the same by agency.

(6) The minimum concrete grade for RCC shall be M-30

(7) HYSD Fe 415 / 500 grade reinforcing bars confirming

to I.S. 1786 / 1139 shall be considered in design. CRS /

TMT bars shall be provided. In saline atmosphere

corrosion resistance stainless steel / HCR rebar shall be

provided. Any other steel can be used with approval of

C.E./ in situation of non-availability in market without

(8) Minimum size (or thickness) of various components

shall be provided as per tender criteria / specifications in

absence as per I.S./ Std. practice of G.W.S.S.B. Minimum

dimensions specified for various components in tender

data / specifications shall be provided without fail.

VOLUME-III PRICE BID

(9) The safe bearing capacity (SBC) shall be referred

from SBC test report. In absence of report it shall be

referred from data sheet. If poor soil is found / water

table is met with during excavation SBC shall be

scientifically ascertained and design shall be revise. No

extra shall be paid for increase in quantity.

(10) DI pipes and special shall only be used if type is not

specified in tender.

(11) The rate shall include cost of dewatering during

excavation making all arrangement when water table

meets within depth.

(12) The structure shall be designed properly to resist

uplift due to ground water table specified in data or

actual ground water table meets with during excavation.

No extra shall be paid. If GWT / Uplift is mentioned in

tender and during excavation it does not meet 7.5% rate

shall be reduced.

(13) SS pipes railing shall be provided when sump is

more than 1.5 meter above ground level.

(14.a) RCC staircase /RCC steps should be provided from

GL to sump top slab based on the height of the GSR

above/Below the ground.

(14.b) RCC Staircase with SS railing to be provided inside

reservoir container. BB Masonry stair cabin with MS

safety door having locking arrangement to be provided

for GSR sump and HGLR of capacity more than 7.5 lakhs

liter with top slab.if dome is constructed as top slab then

provide minimum opening of 900 mm x 2000 mm with

curbing and SS railing around.

(15) Appearance of structure should be aesthetically

good looking acceptable to authority.

(16) Any charge in size, shape, depth below GL, height

above GL, water depth, F.B., size of member etc. can be

permitted in exceptional case due to site condition or

hydraulic design requirement by C.E. No extra shall be

paid for change.

VOLUME-III PRICE BID

(17) Any charge in data, dimensions, shape, water depth,

reduction in size if permitted by competent authority and

if it reduces quantity then payment shall be reduced

(18) When capacity of GSR / Sump is > 20 lakh liters two

or suitable compartments acceptable to executive

engineer shall be designed and provided.

(19) Agency shall engage qualified (at least graduate)

consulting engineer for designing the structure and he /

she shall visit the site for guidance of work.

(20) 75% part rate shall be payable for concrete,

reinforcement and plastering items of container until

satisfactory hydraulic testing for water tightness is

performed as per tender condition. Till the work shall be

treated as incomplete.

Above conditions / general specifications Sr. No. 1 to

are part and parcel of tender (contact) and prevail over

other provisions in tender.

As above without water table (Sub soil water level

below foundation)

Rupees Eleven Lac

1127335.8 Thousand Three

3.00 Lakh Liter capacity Of Sump At Dudkha Ta Sami 1.00 No

2 Hundred Thirty

Five & Paise Eighty

VOLUME-III PRICE BID

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 Rupees Two

2.0 departmental stores and including cost of jointing 498.00 Rmt 263.00 Hundred Sixty

meterial etc. complete.Note:1.One coupler / ring shall be Three only

provided with each full-length pipe cost of which is

included in rates below.2. 3% (Three) Discounted rate to

be consider for Coupler jointed pipe3. Rate for PVC Resin

as Rs. 91739/MT (Price Without GST) i) 125 mm Dia

2.1 ii) 140mm Dia 6 kg/cm2 1800.00 Rmt 326.00 Hundred Twenty

Providing and supplying ISI mark G. I. pipes with

Couplings of following class and diameter including all

taxes, insurance, transportation, freight charges, octroi,

3.0 inspection charges, loading, unloading, conveyance to 15.00 Rmt 1355.00

Hundred Fifty Five

departmental stores, stacking etc. complete. (IS -1239)

(Not for well/tube well column pipe) i) 150mm Dia.

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, Rupees Three

freight charges, octroi, inspection charges, loading, Thousand Five

unloading, conveyance to departmental stores, stacking Hundred Sixty

etc. complete. A) Sluice Valve with ISI Mark Only. PN-1 Three only

with handwheel/cap operated (P-D.type short body)

A) Sluice Valve with ISI Mark Only. PN-1 with Rupees Five

handwheel/cap operated (P-D.type short body) ii) Thousand Eight

VOLUME-III PRICE BID

Providing and supplying specials to GI pipes 150mm dia. Rupees Nine

5.0 GI Elbow (M) 6.00 No 960.00

Hundred Sixty only

Providing and supplying specials to GI pipes 150mm dia. Rupees Six

5.1 Coupling G.I 6.00 No 620.00 Hundred Twenty

Providing and supplying C. I. Air valves of approved

make & quality of following class and diameter including

all taxes, insurance, transportation, freight charges,

6.0 octroi, inspection charges, loading, unloading, 8.00 No 2496.00

Hundred Ninety Six

conveyance to departmental stores, stacking etc.

complete. (i) 50mm dia. Air Valves (Double Acting,

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 Rupees Ninety One

7.0 safety provisions using site rails and stacking excavated 1457.19 Cum 91.23 & Paise Twenty

stuff including up to all required lead cleaning the site Three only

etc. complete for all lifts and strata as specified.In all

sorts of soil and soft murrum, Upto 1.50 mt depth

Lowering, laying, fixing and jointing PVC/uPVC/cPVC

pipes and specials of following class and diameter

Rupees Twenty One

including cost of conveyance from stores to site of works

8.0 498.00 Rmt 21.53 & Paise Fifty Three

including cost of labour, material, cement solvent, giving

satisfactory hydraulic testing as per ISI code. i) 125 mm

8.1 ii) 140 mm Dia. PVC Pipe 1800.00 Rmt 23.58 Three & Paise Fifty

Lowering, laying and jointing G. I. pipes with G. I. specials

of following diameters in proper position, grade and

alignment as directed by Engineer-in-charge including

9.0 15.00 Rmt 50.23 Paise Twenty Three

conveyance from stores to site of work, labour, giving

hydraulic testing, etc. comple. i) 150 mm Dia. Medium

Refilling the pipeline trenches incl. ramming, watering, Rupees Twenty

10.0 consolidating desposal of surplus stuff as directed within 1424.51 Cum 22.55 Two & Paise Fifty

a radius of 3 km. Five only

VOLUME-III PRICE BID

Lowering, laying and jointing in position following C. I. /

D/F Reflux valves, Butterfly valves, Sluice valves and Air Rupees Four

valves including cost of all labour, jointing material, Hundred Forty

including nut bolts and giving satisfactory hydraulic Nine & Paise Ninety

testing, etc. complete. A) Sluice Valve with ISI Mark Eight only

Only. i) 100mm dia

11.1 A) Sluice Valve with ISI Mark Only. ii) 150mm dia 2.00 No 599.63

Nine & Paise Sixty

B) Air Valve (Single Acting & Double Acting) (i) Hundred Eighty

50mm dia. Air Valves (Double Acting, DS-2) Eight & Paise Forty

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

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 Rupees Five

parts, each with handles or MS Bar etc. complete as given Thousand Five

size) Upto 1 Mt. depth from G. L. to pipe invert level incl. Hundred Fourteen

complete civil works but excl. cost of excavation and & Paise Fifty only

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 0.60 m x 0.60 m and 1.0 m

deep. 1) With Precast slab in two parts 150mm

Erection of airvalve riser by installing new M.S pipe of

6mm thick and 3.2mt length with necessary fittings such

as flange of appropriate size,nut bolts and embeded the

13.0 8.00 No 3189.80 Hundred Eighty

pipe in R CC M;15 with offset of 10 cm around pipe with

Nine & Paise Eighty

necessary steel etc complete. (i) 50mm dia. Air Valves

(Double Acting, DS-2)

VOLUME-III PRICE BID

Drilling of Horizontal bore hole for water main pipe line

under the Railway / Road tracks in all strata with

required length includin fixing of M.S. (oras specified by

Railway / Roadauthority)casing pipe of suitable size and Rupees Two

Thickness .Rateincludes the cost of Drillingof bore Thousand Six

13.0 hole,Casing pipe & welding pushing etc complete but 25.00 No 2616.83 Hundred Sixteen &

excluding the cost of watermain, valves and other Paise Eighty Three

items.Entire works hould be as per Approved Drawing only

and as per instruction of Railway / Road authority for

Following diameter of Bore hole. for IRS pipe. c) For

300mm dia bore hole (Watermain 168mm)

Labour charges for Reparing of Leakage in PVC Pipeline

of following diameter at different places lncluding

necessary excavation manually or by mechanise

excavation, Removing of mud, cleaning of Pipe &

Leakage Portion, cutting the pipeline & Remove the Piece

14.0 2.00 No 1159.28 Hundred Fifty Nine

of Pipe from trench with inclusive of mechanical deviced

JCB, Hydrs/Crain if Necessary & Labour Requires with

Providing Material Such as Couplers, Solution etc. Comp.

(Incl. all Material but Excl. of Cost Of Pipe) (For Job

Connection With Existing Pipeline) i) 125mm dia

Hundred Eighteen

& Paise Thirty only

Providing C.C.M.:100 for encasing pipes using trap metal Rupees Four

size 12 mm to 50 mm incl. form work curing Thousand One

15.0 consolidation etc. complete for various location on pipe 10.80 No 4113.80

Hundred Thirteen

line & Paise Eighty only

MONO PUMP SET Supply of Monoblock pump 3 phase

400/440 vott, 50 c/s. A.C. Supply & 2800 RPM , following Rupees Thirty Nine

16.0 IS 9079 At Department Store With Folling MOC : Casing: 2.00 No 39240.00 Thousand Two

CI-FG260, Impeller : Bronze & Shaft : SS:410. Hundred Forty only

Dischrge.1140 L.P.M., Head. 39 Mtr, 15 H.P.

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CABLE Supply of PVC insulated flat submersible cable as

per detailed technical specifications of R/C of GWSSB

17.0 90.00 No 194.00 Hundred Ninety

conforming to IS 694, IEC 60227 / 60228. (b) 1 x 3 x

CONTROL PANEL BOARD: Supplying DOL / Star Delta

starter suitable for local & remote pump control

Rupees Thirteen

application consisting of MPCB, overload relay and

18.0 contactors as per Type II coordination including digital 2.00 No 13771.00

Hundred Seventy

voltmeter, analogue ammeter with selector switch, run

hour meter, required protective relays & control

accessories. S.D. from 16 to 20 HP

EARTHING : Cast iron earth plate size 45 X 45 X

specially prepared 2.5 Mtr. Deep earth Pit complete with

19.0 2.00 No 1200.00 Thousand Two

necessary G.I. strip in G.I. pipe 2 Mtr. long with coupling

and G.I. plug for earthing of switch gear, conduit run or

power plug etc .

ERRECTION : Errection of Sub Mono Pump Set including,

20.0 Lowering, Laying of Pipeline, fixing of valve including 2.00 No 4000.00

testing etc. complete with fixing matrials.

M.S Cabin Supply and installation of MS fabricated

structure cabin @ site of work using 65 mm, 50 mm &

mm square pipes with cabin size 1.5 mtr X 1.5 mtr X

mtr including providing & fitting of (1) backalite sheet

3.5 mm thick in sides, (2) 20 guage MS sheet outer side

for side walls, (3) backalite sheet 3.5 mm thick sheet for

Rupees Sixty Nine

roof side, (4) 24 guage GI sheet out side with 15 mm

21.0 plywood sandwitch fitting & flooring with 19 mm water 1.00 No 69930.00

proof plywood sheet and (5) shock proof rubber mating.

Job includes oil painting two coats, door locking handle

arrangement, providing proper air ventilation and fuse

box. The meter & fuse box should be fitted on timber

hold fast for holding screw or nut bolts by semi skilled

labour as per detailed technical specifications, drawings

and instructions of the Engineer-in-charge.

Total of Schedule B

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I/We am /are withing to carry out the work at % above / belwo (Should be written in figures and words)Above/

below the tendered rate mentioned and above amount of my tender as under

Estimated amount put to Estimated amount put to

Signature of contractor Deputy Executive Engineer

Pubilc Health Sani.Sub.Division

Executive Engineer,

Public health Works division

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Name of work: - Bid documents for, Providing, Supplying, Lowering, Laying & Jointing

140 mm and 125 mm Dia PVC Pipeline 6 kg/cm2 as a Gravity main

Pipeline for Vaghpura and Upaliyasara Section from Boosting Station

to Vaghpura Branch & Constructing of 3,00,000 lit. RCC UG Sump,

Pumping Machinery for UG Sump At Dudkha (For Village Vaghpura

and Upaliyasara Boosting), Ta- Sami District. Patan. ( 2nd Attempt)

under Deposit Work.

Detailed TECHNICAL SPECIFICATIONS

Item No .01 RCC U/G SUMP

Preparing structural design of RCC Under Ground / Partially under

ground / above high ground level Reservoir of required capacity as per

relevant I.S. standards and constructing the same, including excavation

in all types of soil strata (including rock) including shoring strutting if

required, for loose soil / to protect from collapse, casting 100 mm thick

P.C.C. levelling course in M-15, Refilling the pit with proper soil and

disposing of the surplus stuff at all lead. Including cement plaster in CM

1:2 with approved water proofing compound to all over inside container

(i.e. walls, base, top slab/dome bottom etc. all). Including all types of

labour and material charges of lowering, laying, erecting / hosting and

jointing of pipe assembly to inlet, outlet overflow, washout and bye pass

arrangement as per hydraulic design. Providing and fixing accessories, CI

Manhole frame and cover, water level indicator, adequate cowl type

ventilators or lantern type ventilator with stainless steel jail. RCC

chambers for valves. Providing and applying two Coat Weather Proof

Paint with Primer to the outside face of structure. It also includes

satisfactory water tightness test as per relevant I.S. code and painting

name of scheme and capacity on the tank as per direction of engineer in

List of Indian Standards for Design of GSR / SUMP:-

The structural design of GSR shall be in accordance with provisions relevant I.S.

(1) I.S. 3370, Part – 1 & 2, 2009 or latest revised.

(1.1) I.S. 3370, Part – 3 & 4, 1965 or latest revised.

(2) I.S. 456 – 2000 or latest revised.

(3) I.S. 1893 – 2000 – 1984 or latest revised

(4) I.S. 875, Part – 1 to 3, 1987 or latest revised.

General Specifications:-

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(1) Water depth in container shall be adopted as per data of tender. If water depth is

not specified the suitable water depth / acceptable to field engineer in

accordance with hydraulic requirement shall be adopted for capacity.

(2) Shape of container (in plan) specified by in data shall be adopted in absence circular

shape shall be adopted.

(3) Size shall be fixed as per availability of space (land area) at site / acceptable

engineer in charge.

(4) Effect of overlapping of pressure bulbs on soil due near by structure and proposed

sump should be considered.

(5) Care shall be taken that no damage should occur to nearby existing structure.

Compensation shall be paid for the same by agency.

(6) The minimum concrete grade for RCC shall be M-30

(7) HYSD Fe 415 / 500 grade reinforcing bars confirming to I.S. 1786 / 1139 shall be

considered in design. CRS / TMT bars shall be provided. In saline atmosphere

corrosion resistance stainless steel / HCR rebar shall be provided. Any other steel

can be used with approval of C.E./ in situation of non-availability in market

without extra cost.

(8) Minimum size (or thickness) of various components shall be provided as per tender

criteria / specifications in absence as per I.S./ Std. practice of G.W.S.S.B.

Minimum dimensions specified for various components in tender data /

specifications shall be provided without fail.

(9) The safe bearing capacity (SBC) shall be referred from SBC test report. In absence of

report it shall be referred from data sheet. If poor soil is found / water table is

met with during excavation SBC shall be scientifically ascertained and design shall

be revise. No extra shall be paid for increase in quantity.

(10) DI pipes and special shall only be used if type is not specified in tender.

(11) The rate shall include cost of dewatering during excavation making all arrangement

when water table meets within depth.

(12) The structure shall be designed properly to resist uplift due to ground water table

specified in data or actual ground water table meets with during excavation. No

extra shall be paid. If GWT / Uplift is mentioned in tender and during excavation

it does not meet 7.5% rate shall be reduced.

(13) SS pipes railing shall be provided when sump is more than 1.5 meter above ground

(14.a) RCC staircase /RCC steps should be provided from GL to sump top slab based on

the height of the GSR above/Below the ground.

(14.b) RCC Staircase with SS railing to be provided inside reservoir container. BB Masonry

stair cabin with MS safety door having locking arrangement to be provided for GSR

sump and HGLR of capacity more than 7.5 lakhs liter with top slab.if dome is

constructed as top slab then provide minimum opening of 900 mm x 2000 mm with

curbing and SS railing around.

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(15) Appearance of structure should be aesthetically good looking acceptable to

(16) Any charge in size, shape, depth below GL, height above GL, water depth, F.B., size

of member etc. can be permitted in exceptional case due to site condition or

hydraulic design requirement by C.E. No extra shall be paid for change.

(17) Any charge in data, dimensions, shape, water depth, reduction in size if permitted

by competent authority and if it reduces quantity then payment shall be reduced

(18) When capacity of GSR / Sump is > 20 lakh liters two or suitable compartments

acceptable to executive engineer shall be designed and provided.

(19) Agency shall engage qualified (at least graduate) consulting engineer for designing

the structure and he / she shall visit the site for guidance of work.

(20) 75% part rate shall be payable for concrete, reinforcement and plastering items of

container until satisfactory hydraulic testing for water tightness is performed as

per tender condition. Till the work shall be treated as incomplete.

Above conditions / general specifications Sr. No. 1 to 20 are part and parcel of tender

(contact) and prevail over other provisions in tender.

As above without water table (Sub soil water level below foundation)

1.1 3,00,000 Liters Capacity at Dudkha Ta Sami

1.1.0 Capacity of the container of the tank shall be the volume of the water it can

store between the designed full supply level (F.S.L) and lowest supply level

(L.S.L) i.e. the level of the lip of the outlet pipe. Due allowance shall be made

for 20 mm. thick plastering the tank from inside, while calculating the capacity of

1.2.0 Freeboard is the vertical distance between F.S.L. and Soffit of covering slab or

dome or beam supporting the cover. In any case the free board shall not be less

than 300 mm form bottom of beam.

1.3.0 Height of the staging or height of the tower shall be the vertical difference

between L.S.L. of the tank and the average ground level at the site of tank.

1.4.0 Dead storage shall be the storage capacity of water below L.S.L. depth of dead

storage shall be the vertical distance between the top outlet level and wash out

level. The washout pipe level shall be at the lowest portion of the container.

1.4.1 Minimum depth of water for dead storage shall be 100 mm even for flat bottom

slab and not more than 300 mm for inlet i.e. bottom dome slab type tank.

1.5.0 Water depth in the tank shall be the vertical distance between L.S.L. and F.S.L.

1.6.0 The allowable bearing pressure or the safe bearing pressure on the strata as

specified in the table of IS 1004-1978 or its latest revision, whichever is less shall

be considered and design of foundation shall be based on this unit pressure unless

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1.6.1 Not withstanding anything mentioned above regarding S.B.C. whenever the

Engineer-in-charge of design directs that bearing capacity shall be determined by

carrying out actual soil exploration and tests due to conditions as mentioned in

para 2.0 of IS 1992-1969. The same shall be carried out by a Government

laboratory or any other approved laboratory and allowable bearing capacity so

arrived shall be taken as the basis of design. The factor of safety adopted in case

of actual test shall be as per clause 6.1 (A) of IS 6403-1971.

1.6.2 IS:1893 (Part-I&II): 2202, IS-875(Part-III):2002, IS:13920 and IS:4326 or its

latest revision shall be followed.

1.6.3. As per IS:11682-1985 Page-25 typical reinforcement details "The" Ties or

"Links" jointing to vertical bars of shaft is highly needed.

2.0 GENERAL REQUIREMENTS:

2.1.0 Cement concrete shall be in accordance with IS 456-2000 fine and coarse

aggregates shall be confirming to IS 383-1963 or its latest revision. The selection

of the type of fine and coarse aggregate to be actually used shall be as directed

by the Engineer-in-charge.

2.2.0 For parts of the tank in contact with stored water and closing vapour above FSL

shall be in concrete grade M250 or in richer grade.

2.3.0 Inlet and Overflow pipe:

Materials: Ductile iron double flanged pipe / C.I.D.F pipe of appropriate class and

site as per instruction of engineer in charge shall only be used.

2.3.1 Inlet Pipe: The size of inlet pipe shall be same that of rising main to U/G Sump.

2.3.2 Overflow pipe: The size of overflow pipe shall be one diameter higher than that

Detailed drawing showing all the pipes, duck foot bends, chamber, sluice valves

and other necessary connection shall be furnished in the plan. Plain concrete

block in M-150 for duck foot bands shall be of minimum depth of 600 mm. The

width of the block shall have an offset minimum of 150 mm.

2.4.0 Water Level Indicator:

A water level indicator shall be provided for the tank reading depth of water in

meters with least count of 10 cm. The system shall consist of uncorrodable

material and shall be simple and easy to maintain. The water level indicator shall

be provided and fixed as approved and directed by the Engineer-in-charge.

2.4.1 Access to roof for an entry to the inside of the tanks shall be provided. At roof

level of the tank the access to roof manhole from the ladder or stair shall be

properly provided with parapet or railing. At ground level or at walkway level the

access forgoing up shall be provided with a door and locking arrangement. Railing

at roof level and at gallery level shall be provided.

2.4.2 At least two manhole with frame and cover of CI medium type shall be provided

with ladder for entering into the container for maintenance purpose. The size of

manhole frame shall be 0.9 x 0.6 meter 75 kg.

2.5 The roof of the tank shall be ventilated by providing cowls or ventilators with

mosquito proof met for ventilators. They shall be fixed with proper framing.

Ventilation area shall not be less than of (A) 0.04% of the free water surface when

cowl type ventilators are provided. (B) Cross sectional area of the inlet pipe. (C)

Cross sectional area of the outlet pipe.

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2.6.1 All tanks shall be checked for seismic forces confirming to IS 1893-1975 or its

latest revision and wind forces also.

2.6.2 Water tank in vicinity of mines, galleries and blasting sites or in areas which may

be subjected to blasting sites or in areas which may be subjected to blast or

shock, shall be designed for the dynamic forces developed due to blast

2.6.3 Members of towers, which are primarily subjected to dynamic stresses, shall be

checked for ductility of the members at the joint.

2.6.4 Staircase and all columns shall be tied together just above foundation level by

structural members such as a braced or a tie ring beam.

2.7 Following shall be the minimum thickness of various members of the tank

Roof slab 100 mm

Bottom slab 200 mm

Roof Dome 100 mm

Vertical wall including shaft wall 150 mm

2.8.0 Error up to 2 % in weights, forces, moments etc. in the design calculations may be

3.1.0 For all RCC and PCC component unit weight shall be taken as 25000 N/m

24000n/m3 respectively, allowance of platter up to 20 mm. Inside surface of

container shall be taken in to consideration of in normal circumstances.

3.2.0 Water load shall be taken as 10000n/m3.

3.3.0 Live load and snow load shall be taken as per IS: 875-1964 or its latest revision.

3.3.1 No live load may be assumed while designing the stagging (or tower) and

foundation for seismic loads.

3.3.2 Live load on gallery all round the elevated tank shall be considered as 1500 n/m2.

3.4.0 Wind load as per Fig. i.e. basis maximum wind pressure or Indian including winds

of short duration as per IS 875(Part-III)/2002 or its latest revision shall be

3.5.0 Seismic forces on the tower shall be as per IS 1893(Part-I&II)/2002 or its latest

Wind and seismic forces shall not be assumed to act simultaneously.

INCREASES IN PERMISSIBLE STRESSES:

Where stresses due to wind or earth quack temperature & shrinkage effects are

combined with those due to dead, live and impact loads the stresses specified in table

13, 16 & 17 of 456-1978 may be increased up to a limit of 33.50%.

4.1.1 Shape of the structure shall be as directed by Engineer-in-charge and shall be

selected depending upon site condition from the standard shape

4.1.2 General description and salient feature as mentioned below of the design shall be

not approved by the Engineer-in-charge and shall be mentioned in the design

before detail design calculations starts.

4.2 Sketch showing dimensional section, elevation with plan shall be given.

4.3.1 The safety against over turning of structure shall be computed quite accurately.

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4.3.2 Design shall be based on the worst possible combination of various loads,

moments, shears and resultant stress in the tank for the following two cases.

(i) Tank Full 'A'

(ii) Tank Empty

Tank full means depth of water inside the container up to full height of the

container without consideration of free board.

Or safe bearing capacity of soil based on actual soil investigation report of the

Position of sub soil water level.

Chemical analysis if sub soil water and soil where possibility of brackish/saline

water is ascertained.

Location of site on index plan with respect to latitude and longitude.

4.3.3 Design shall be based on accepted basis and methods of design as well as the

etc. and their latest revision. However methods based on experimental

investigation as mentioned in para 18.2 % "C" in IS 456-1978 shall not be

4.4.0 The parts of the structure neither in contact with the liquid on any face more

enclosing the space above the liquid as in the case of stages of a tower shall be

designed on working stress method on accordance with the requirement of IS 456-

1978. Staging may be designed on limit method as per IS 456-1978.

4.5.0 Design of members other than these excluded by above (i.e. roof, walls, floor

etc. of the container) shall be based on consolidation of adequate resistance of

cracking as well as adequate strength calculation of stresses shall be para s per

3.2.2 of IS 3370 (part-II) 1965 or its latest revision.

4.5.1 PERMISSIBLE STRESS IN CONCRETE FOR RESISTANCE TO CRACKING:

For calculations relating to the resistance of members to cracking the permissible

stresses in tension (direct and due to bending) and shear shall confirm the values

specified in Table-I of IS 3370 (part-II 1965)

The permissible tensile stresses due to bending apply to the fact of the member

in contact with the liquid. In members less than 225 mm thick and in contact with

the liquid on one side, these permissible stress in bending apply to the face

remote from liquid.

4.5.2 FOR STRENGTH CALCULATION:

In strength calculation, the permissible concrete stresses shall be in accordance

with para-44 of IS 456-1978. Where the calculated shear stress in concrete alone

exceeds the permissible value reinforcement acting in conjunction with diagonal

compression in the concrete shall be provided to take the whole of the shear.

4.5.3 Permissible compressive stress (Directly only) insheels (i.e. Top Dome, Conical

Wall and shall be reduced by 43% for 10 cm thick walls. For thickness more than

30 cm, the compressive stress shall be reduced by 50% and for inter media

thickness 10 cm. to 30 cm. linear interpolation shall be done.

4.6 PERMISSIBLE STRESSES IN STEEL:

4.6.1 For resistance to cracking the steel and the concrete are assumed to act

together. For checking the tensile stresses in un cracked concrete for avoidance

of cracks, the tensile stress in the steel shall be the product of the modular ratio

and the corresponding allowable tensile stress in concrete as per IS 3370(part-II)

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1965 or its latest revision. Modular ratio "M" for different concrete mix shall be

taken as under:

Grade of ConcreteModular Ratio "M"

4.6.2 For strength calculation (concrete assumed to be cracked), the permissible

stresses in reinforcement shall be as per Table -2 of IS 3370(part-II) 1965 or its

latest revision. For steel, the stresses shall be as per IS 1966 or its latest revision.

4.7.1 The analysis of staging of the tank shall be done by using any established method

such as portal method etc. The staging shall be analyzed from combination of

dead, dead live loads and wind seismic loads. The effect of continuity of beams of

the junction shall be properly accounted and column reaction worked out, for

different condition of loading, axial force, shear force, bending moments.

4.8.1 Modules of elasticity of concrete MEC shall be taken as 5700/FC where equal to

characteristic cube strength of concrete in N/m2 as per IS 456-1976.

4.8.2 Columns shall be checked for tensile stress for both the conditions as mentioned

in para 4.3.2 in combination with axial tension and bending due to wind or

seismic loads, and shall be checked for bond for maximum tensile stress arrived.

4.8.3 Columns may be assumed to be fixed at the top of footing.

4.8.4 Water Tower in seismic zone (V) of IS 1393-1975 twin diagonal (crossed) backing

of steel in vertical plane in addition to the horizontal braking may be provided.

5.0 FOUNDATION:

5.1 The permissible increase in bearing pressure for different types of foundation

shall be as per table -I of IS 1893-1965 or its latest revision. When seismic forces

are considered and for wind forces it shall be as per IS 1904-1966 or its latest

5.2 For the purpose of the design of foundation the loading data shall be given the

magnitude of vertical load, lateral load and moments at top of footing

(Foundation) level. The data shall be made available, for both the cases as per

5.4.1 The foundation area, door, individual column footings, combined footings,

angular rafts and solid rafts shall be worked out on the basis of lower most value

of the safe bearing capacity or allowable bearing pressure values as derived from

IS 1904-1978, IS 9403-1971, IS 8009-1976 or their latest revision.

5.4.2 In case of purely cohesive and CI pipe of soil particulars attention should be given

to IS 1903-1978 clause 6 & 7. Settlement shall be calculated as per IS 8009 (part-I)

1976 for foundation.

5.4.3 In case of purely cohesion less soil, foundation shall be design for safe bearing

capacity and shall be checked for permissible total as well as differential

settlement values as given in relevant IS.

5.4.4 If the foundation consists of individual columns footing, minimum clear distance

between center of column shall be equal to twice the width of footing and clear

distance between the edge of footing shall be not less than width of footings.

5.4.5 In case of soil beneath the footings are not of the same characteristics the footing

shall be designed for the soil having lowest SNC or ANP as the case may be. In

such conditions the permissible limits of total as well as differential settlement

shall be limited to 75% of the permissible limit given in ISS.

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5.4.6 For special type of foundations like well foundation under beam pipe foundation

etc., decision of Superintending Engineer, Public health Design Circle shall be

final and binding to the designer.

5.4.7 Classification of soil and all characteristics of soil relevance to BSBC and APB shall

be as per the soil in irrigation reports of Government stipulation. Government

approved investigators.

5.5 For the design of foundation angular or solid raft type, the "PLACE THEORY" shall

5.6 In normal circumstances minimum 100-mm thick plain cement concrete with

mm projection around in Grade M 100 with coarse aggregate as metal shall be

provided as leveling course. Where injurious soil progressive water is expected

the leveling course shall be grade not weaker than M 15 and if necessary Sulphate

resisting or the special cement shall be used. The ground level within the

foundation area of the structure shall be consolidated properly with a suitable

slope to drain out rainwater outside the foundation.

6.1 MINIMUM REINFORCEMENT FOR WATER RETAINING MEMBER:

6.1.1 The minimum reinforcement in walls, floors, roofs, in each of two directions at

right angle shall have an area of 0.3% of the concrete selection in that direction

for sections up to 100.00 mm thick. For section for thickness greater than 100 mm

and less than 450 mm thick, minimum reinforcement each of two directions shall

be nearly deducted from at 0.3% for 100 mm thick sections or greater two layers

of reinforcing steel shall be place one near each face of the section to make up to

minimum reinforcement specified in this clause.

6.1.1 The minimum reinforcement specified in this 6.1 above may be decrease by 20 %

in case of high yield strength bars confirming to IS 1786-1976 or IS 139-1966.

6.2.1 Minimum clear cover to reinforcement under normal conditions shall be as per

para 25.4 of IS 456-1978.

6.2.2 For liquid faces of parts of members either in contact with the liquid or enclosing

the space above the liquid shall be as per para 7.2 IS 3370 (part-I 1965).

6.2.3 In case of Raft Foundation, the cover to reinforcement shall be as per 4.6.2 of IS

6.2.4 In case of "shaft" the cover to reinforcement shall be as under;

Horizontal 15 mm

6.3 For members of structure in contact with water, effective cover shall not be more

than 60 mm. Even bars subjected to bending stress, or bars subjected to tension

due pure tension in the member the effective cover shall not more than 75 mm.

6.4.1 Spacing of reinforcement shall be as per para 25.3 IS 456-1978.

6.4.2 Spacing of lateral ties for column shall satisfying provision of para 25.3.2 'C' of IS

6.4.3 The additional suggested criteria for reinforcing steel which accounts for existing

moments, tension etc. i.e. other than temperature or binding steel shall comprise

of minimum 8 mm for deformed or 10 mm mild steel bars.

6.4.4 The spacing between two para in main reinforcement shall distribution steel,

stirrups, links etc. shall not exceed 30 cm.

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6.5 For members of the container, the maximum diameter of reinforcement in

tension shall not exceed as given below depending upon the geometrical

percentage of reinforcement. (Ratio of tensile steel to gross is concrete.)

Up to 1.0% 16 mm dia

Up to 1.5% 22 mm dia

Up to 2.0% 25 mm dia

1.0 In case of dispute regarding interpretation any above clause, the decision of the

Superintending Engineer, Public Health Circle, Concerned will be binding to the

2.0 In case of any clauses not included in the above criteria the decision of the

Superintending Engineer, Public Health Design Circle will be final and binding to

INSTRUCTION FOR PREPARATION OF DESIGN OF RCC SUMPS

(ONLY FOR SELF DESIGN BY CONTRACTOR)

1.0 The design of RCC Sumps/HGLR shall be in accordance with IS-1893-( Part-I ) “

Criteria for Eathquake Resistant Design of Structures” Part –I General

provisions and Buildings and IS-1893-( Part-II (2002) “ Liquid Rataining Tanks (

Elevated and Ground supported “ and IS 875 Part-III, IS13920, IS

3.0 PAYMENT AS PER PAYMENT SCHEDULE

4.0 COMMON CONDITIONS:

4.1 All petty items occurring if the work shall be carried out in workman like manner

as per specification published by G.W.S. & S. Board and as per general

specification current in the Division and as per instruction of the Engineer-in-

charge from time to time.

4.2 Extra charge of claims in respect of extra work shall not be allowed unless such

works are ordered in written by the Engineer-in-charge and are claimed for in

specified manner before the work is taken in Hand.

4.3 The contractor shall engage on in experience and qualified supervisor as his

authorized agent for the work. He shall be responsible to take from time to time

such orders as may be given by the Engineer-in-charge to carry them.

4.4 As order book shall be maintained on the work site and the contractor shall sign

the orders given by the Engineer-in-charge and he shall carry out them promptly.

The order books shall be surrendered to the Department on completion of Work.

4.5 The contractor shall have to clear the site of work before it commences and after

the work is completed for which separate claim shall not be entertained.

4.6 In addition in the required stores the contractor shall provide at his own cost the

suitable temporary office shed with a covered area of about 20 sq mt. with

necessary furniture for the use of Government staff while in works. The shed and

furniture on completion of the work shall be removed by the contractor at his

4.7 The contractor shall provide at his own cost all labour charges setting out the as

may be required for lining and setting out the as may be required for lining and

setting up the works satisfactory and adequate facilities site scaffolding etc. for

facility of checking his work or taking measurements etc.

4.8 Department shall give reasonable facilities to the contractor to enable him to

obtain controlled materials at controlled rates as may be fixed from time to time.

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The contractor shall however not be entitled to time. The contractor shall

however not be entitled to claim any compensation extra time limit to account of

non-supply at controlled rates. The materials obtained shall be only used for the

work in question. Any materials remaining surplus shall be neither disposed nor

removed by the contractor without obtaining written permission of Department to

that effect. Government shall have the right to take delivery of the surplus

materials at the original purchase price of the receipt contractor shall be sue of

such materials to the satisfaction of Engineer-in-charge and submit in monthly

statement thereof.

4.9.1 The contractor at his own cost expense shall provide necessary housing

accommodation and the sanitary

4.9.2 Arrangement for his staff and labour and shall pay direct of the authorities

concerned all rates. Taxes royalties and other charges.

The contractor shall also comply with the requirement of the Health Department

as regards anti malarial measures etc.

4.10 Water require for the execution of work and for the water tightness test of the

reservoir shall be supplied by the contractor at his own cost in manner

satisfactory to the Engineer-in-charge of work.

4.11 The contractor shall not be entitled to claim compensation from the Government.

For works suffered on account of delay where such delay is caused either by (i)

Difficulties relating to the supply of Railway Wagons, (ii) Force majeure, (iii) Acts

of the God, (iv) Any other reasonable caused beyond the control of the

Department. In case of delay Govt. shall however grant such extension of time

limit for the completion as may appear reasonable to the Engineer-in-charge and

his decision shall be final.

4.12 The contractor shall be responsible to pay complete compensation to his staff and

to his labours according to the labour compensation rules, on account of

accidents and less of life or less of the life due to accident.

5.0 DECLARATION:

The contractor shall made declaration as under:-

"I have made myself thoroughly conversant conditions as regards the availabilities

or otherwise of all construction materials skilled and unskilled labour on which. I

have quoted my rates for this work. The specifications, drawing and design of this

work have been careful studies and are understood by me before the submission

of this tender.

DETAILED SPECIFICATION

Detailed specification given here shall be treated as extension or partial

modifications to the specifications of respective items given in the volume of

specification published by Gujarat Water Supply and Sewerage Board.

1.0 EXCAVATION FOR FOUNDATION:

1.0 When the rates are to be quoted for a work based on " contractors own design"

the word excavation for foundation shall mean excavation for foundation in all

types strata such as soil soft murrum as well as hard rocks up to the designed

depth at which foundation is to rest. No extra payment will be given for any

change in strata at the same place. The rate shall also include dewatering and

shoring strengthen if and where found necessary.

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1.1 Excavation shall be carried out as per approved drawing. The excavation made

deeper or wider than that required as per drawing shall not paid, but such deeper

excavation if carried out shall have to be filled up using C.C. 1:3:6 by the

contractor without extra cost. If the type of strata require wider excavation at

top (GL) Then contractor shall excavate the trench accordingly but no extra

payment for such wider excavation shall be made.

1.2 The rate shall include providing cured warnings lights during night time providing

barricading consisting of metal ropes and bamboo for which no extra payment will

1.3 The contractor shall make his own arrangements to obtain prior permission

directly from relevant authorities for staking of excavated stuff near work side. If

he fails to obtain such permission, then he will have to make his own

arrangement with out claiming extra cost to transport and stack the excavated

stuff at a suitable place approved by the Engineer-in-charge of work.

1.4 The excavated stuff shall be stacked at least 3.0 meter away from the edge of

excavated trench, If enough space is not available at work site then the

excavated stuff shall be stacked at suitable place situated away from site.

Similarly the surplus stuff shall have to be disposed off at a suitable place for

which contractor shall have to obtain permission directly from relevant

authorities. No extra payment for transportation of excavated stuff or surplus

stuff shall be made.

1.5 No excavated stuff shall be disposed off or used for any purpose other than

refilling without prior permission of Engineer-in-charge of work.

1.6 Details shown in the data sheet regarding water table are approximate. The

contractor should make his own arrangements for taking trial pots at his own

cost more quoting his rates for as certain type of strata water table,

quantity of seepage water etc.

1.7 Work at nighttime shall be carried out only with written permission of Engineer-

1.8 Bottom of the excavated foundation trench shall be sprinkles with water (If water

table is not above foundation level) and wall rammed to obtain a reasonably firm

and level bedding.

1.9 The rates shall include continuous dewatering of seepage water or rainwater

from, trenches to keep the trench dry particularly during casting of base

concrete, Concrete for footing and columns of shaft etc. till concrete fully fews

1.10 Whenever collapsible types of strata are encountered pucca shoring and strutting

shall be invariably claim shall be entertained.

2.0 C.C. M 100 BASE CONCRETE FOR LEVELLING COARSE:

2.1 For all practical purpose and in absence of proportioning of concrete on base of

preliminarily tests, C.C. 1:3:6 may be provided as a leveling course i.e. one part

of cement three parts of sand and six parts of black trap kapachi. Specification

for various ingredients of concrete such as sand, cement, kapachi, water shall be

as these given in specification for C.C.M.

2.2 While laying base concrete for leveling course the concrete shall not be dumped

from above but shall be carried out to the bottom and gently placed from a

height not exceeding 1.5 meter. If concrete is transported by chutes, then the

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same shall be remixed at bottom of chutes to overcome any segregation that

might have occurred.

3.1 As far as possible the preparation of various ingredients of concrete shall be

determined on the bases of preliminary tests as per ISS using the actual materials

to be used on site. However in absence of such preliminary tests the volumetric

proportion of 1:2:4 may be adopted i.e. one part of cement, two parts of sand

and four parts of kapachi, water just sufficient to attain desired workability may

be added. However the aim while proportioning should be to fix the proportion of

aggregation and water cement ratio shall be always sufficiently low enough to get

desired strength.

3.2.1 Coarse aggregate shall consist of tough angular black trap kapachi. The kapachi

shall be obtained from approved source only. Normally at least two stock piles of

different size of 12 to 20 mm and 25 mm to 40 mm shall be maintained. It will

however, be preferably to maintain third stock pile of 6 mm to 12 mm also for

better control on mix of concrete.

3.2.2 The maximum size of coarse aggregate to be used shall be as large as possible

within the limits of requirements, based on size of member and spacing of

reinforcement. But aggregate exceeding 40 mm shall not be used in concrete for

3.2.3 Depending up on the size of member, spacing of reinforcement and degree of

workability desired, the coarse aggregates from different stockpiles may be

mixed in a suitable proportion to get a uniform mix that does not segregate.

3.2.4 The coarse aggregate shall not contain dust, clay or other such harmful

material. If directed by the Engineer the same shall be washed with water

and dried before being used.

3.3.0 Fine Aggregates:

Fine aggregates shall consist of coarse, angular river sand free dirt and other

harmful organic materials. If directed the same shall be screened and

washed before being used. Sand brought from approved source shall only be

Contractor shall provide a temporary store with double lock arrangement for

storage of this cement on work site without extra cost. Cement shall be stored in

such a way that it is not affected by moisture.

Water to be used in concrete work shall be potable, free from injurious elements

such as chloride or sulphate etc. and shall be obtained from approved source

only. Contractor shall make his own arrangements to obtain and store sufficient

quantity of water at all times.

3.6.0 Reinforcement Steel:

The reinforcing bars to be provided with TMT Steel Fe-415 and shall confirm to the

Tender specifications and relevant IS specifications.

Form work shall consist of steel plates or smooth timber planks to be joined by

nuts, bolts, nails or pegs so as to have a reasonably water tight joints. Sufficient

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number of vertical and horizontal supports shall be provide when completed.

Formwork shall be sufficiently sturdy & strong to absorb all stresses and

movements. Before concrete is placed in position the formwork and steel shall be

got checked through Engineer-in-charge of work. Advance intimation shall be

given to the Engineer-in-charge for this purpose. The ultimate responsibility for

safety and of lives of workmen and that of forms etc. from beginning of work till

its completions shall always rest with the contractor proper ladders and plant

forms for easy access shall be provided by the contractor without extra cost.

The faces of formwork coming in contact with concrete shall be cleaned and two

coats of approved mould oil applied before fixing reinforcement. All rubbish,

particularly chippings, shavings, sawdust, wire pieces dust etc. shall be removed

from the interior of the forms before the concrete is placed. Where directed,

cleaning of forms shall be done by blasting with a jet of compressed air at no

Forms intended for reuse shall be treated with care. Forms that have

deteriorated shall not be used. Before reuse, all forms shall be thoroughly

scraped, cleaned, nails removed, holes suitably plugged, joints repaired and

warped lumber replaced to the satisfaction of the Engineer In charge. The

Contractor shall equip himself with enough shuttering to allow for wastage so as

to complete the job in time.

Permanent formwork shall be checked for its durability and compatibility with

adjoining concrete before it is used in the structure. It shall be properly anchored

to the concrete.

Wire ties passing through beams, columns and walls shall not be allowed. In their

place bolts passing through sleeves shall be used. Formwork spacers left in situ

shall not impair the desired appearance or durability of the structure by causing

swelling, rust staining or allowing the passage of moisture.

For liquid retaining structures, sleeves shall not be provided for through bolts nor

shall through bolts be removed if provided. The bolts, in the latter case, shall be

cut at 25 mm depth from the surface and the hole made good by cement mortar

of the same proportion as the concrete just after striking the formwork.

The striking time for formwork shall be determined based on the following

(a) Development of adequate concrete strength;

(b) Permissible deflection at time of striking form work;

(c) Curing procedure employed - its efficiency and effectiveness;

(d) Subsequent surface treatment to be done;

(e) Prevention of thermal cracking at re-entrant angles;

(f) Ambient temperatures; and

(g) Aggressiveness of the environment (unless immediate adequate steps are taken to

prevent damage to the concrete).

Under normal circumstances (generally where temperatures are above 20oC)

forms may be struck after expiry of the time period given in IS:456 unless

approved otherwise by the Engineer In charge. For Portland Pozzolana/slag

cement the stripping time shall be suitably modified as approved by the Engineer

In charge. It is the Contractor's responsibility to ensure that forms are not struck

until the concrete has developed sufficient strength to support itself, does not

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undergo excessive deformation and resist surface damage and any stresses arising

during the construction period.

5.0 MIXING, TRANSPORTATION AND LAYING:

5.1 For important works like sumps mixing of concrete shall be invariably done in

approved machine mixer only. The mix obtained from the mixer shall be a

uniform mass consisting of all aggregates coated with cement paste.

5.2 Fresh concrete shall be transported horizontally in ghamellas or wheelbarrows.

Vertical transportation shall be done either by manual labour or using mechanical

vertical lifts. When chutes are used for transportation, care should be exercised

to avoid segregation and concrete may be remixed at bottom of chutes to get

uniform mix. Before any concrete is placed in position all loose materials such as

dirt, chips of stones, wood, steel etc. should be removed. Inner side of forms

should be coated with thin layer of oil to get a good finished surface.

Concrete should not be dumped from above in which case aggregate will

segregates, but placed gently from a height not exceeding 1.5 meter. Compaction

of concrete shall be done by vibrators till cream appears at top. Over vibration

shall be avoided to avoid segregation.

After concrete is set in position it shall be kept continuously wet with water for

days either by using gunny begs (column and walls) by ponding (slab) or as

directed by spraying of water.

Unless otherwise specified the rate shall include finishing the exposed surface to

get good finished surface.

The forms shall be kept in position for period given below:-

1) Vertical sides of walls, beams, columns 2 Days

2) Slabs (props left under.) 4 "

3) Bottom of beam (props left under) 7 "

4) Removal of prop to slab spanning up to

sperious over 4.5 m. 7 "

5) Removal of props to fearus spanning up to

6) Spanning over 6.0 m. 21 "

Specification for C.C.M. 300 shall be same as those for C.C.M 200 except that

grade of concrete to be produced shall be M300. Contractor shall have to design

the Mix of M300 grade concrete by govt. laboratory or any govt. approved

laboratory as per instruction of Engineer in Charge. Trial of Mix design test is

taken in laboratory & site for conforming the test results of Mix of concrete of

grade M300 & same is to be tested in the presence of representative of the

GWSSB. If arbitrary volumetric proportioning is to be followed then the proportion

of cement, sand and kapachi shall be 1:1:2 respectively. Since M - 300 mix is

normally used in water retaining parts of container where the aim is to get

dense, strong and watertight concrete, special care shall be exercised in

controlling proportion of aggregate, water cement ratio, compaction and curing.

7.0 PROVIDING AND PLACING IN POSITION STEEL REINFORCEMENT:

7.1 Reinforcement bars to be used in RCC work shall have to be supplied by the

contractor. The rates include providing, cutting, bending, binding, hooking and

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placing in position including cost of binding wire. The bars shall be fusion bonded

and epoxy coated.

7.2 Depending upon the type of reinforcement steel proposed in design (i.e. M.S. or

deformed etc.) the steel shall confirm to relevant ISS codes in practice.

Contractor shall produce necessary test certificate in absence of which the steel

bars shall be get tested by the Department at the contractor's cost.

7.3 Steel bars shall be cut, bent up, hooked bound with wires and then placed in

position as per approved drawing. The steel shall be got checked through

Engineer-in-charge. Before any concrete is placed in formwork advance

intimation shall be given to the Engineer-in-charge for this purpose. The steel

shall be cleared of any dust or rust that might have been deposited on bars.

7.4 Reinforcement shall be accurately fixed and maintained firmly in the correct

position by the use of blocks, spacers, chairs, binding wire etc. to prevent

displacement during placing and compaction of concrete. The tied in place

reinforcement shall be approved by the Executive Engineer prior to concrete

placement. Spacers shall be of such materials and designs as will be durable, not

lead to corrosion of the reinforcement and not cause scaling of the concrete

Binding wire shall be 16 gauge soft annealed wires. Ends of the binding wire shall

be bent away from the concrete surface and in no case encroach into the

concrete cover.

Substitution of reinforcement, laps/splices not shown on drawing shall be subject

to Executive Engineer's approval.

8.0 WOODEN WATER LEVEL INDICATOR:

8.1 A wooden water level indicator of approved size and type shall be provided and

fixed by the contractor. It shall consist of wooden plank of 250 mm x 40 mm.

8.2 The divisions on water level indicators shall show distance of 10 cm. clearly. A

copper or PVC float of 500-mm dia and 50 mm height shall be provided along with

steel wires pulleys etc. The entire arrangement shall be first got approved by the

Engineer-in-charge of work. Letter and marking shall be painted with approved

10.0 Providing and fixing DI Double flanged pipes and special such as duck foot bends,

crippling flanges bell mouthpiece etc. for inlet outlet overflow and wash out.

10.1 Diameter and length of above pipes shall be as given in Appendix - A. DI double

flanged pipes shall be vertically double flanges and shall be confirm to relevant

ISS. They shall be first get approved by the Engineer-in-charge of work.

10.2 Item shall include providing all specials such as crippling flanges, and duck feet

bends etc. as may be required on site.

10.3 The Item shall also include cost of all jointing materials such as nuts, bolts,

rubber packing, white zinc or pig lead or lead wool if required.

10.4 Pipes shall be fixed perfectly vertical and straight.

10.5 Before fixing in position pipes shall be coated with two coats of anticorrosive

11.6 The pipes and specials shall be tested hydraulically. Leakage if found shall be

repaired without extra cost.

12.0 PROVIDING AND FIXING CI SLUICE VALVE:

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12.1 Diameter of CI sluice valve shall be as shown in Appendix - A. CI sluice valve shall

be of class - I confirming to IS - 780-1980.

12.2 The rate includes providing and fixing CI sluice valves with tailpieces including

jointing materials such as nuts, bolts, rubber packing zinc etc.

12.3 The rate includes giving hydraulic test to the satisfaction of Engineer-in-charge of

12.4 Sluice valve shall be supplied with necessary spindle or wheel for operating the

13.0 PROVIDING AND FIXING C I M H FRAME AND COVER:

One number of C I M H frame and cover shall be provide and fixed in top slab of

container. The dimensions and weight shall be as shown in Appendix - A. The C I

M H frame and cover shall be first got approved by the Engineer-in-charge. Two

coats of anticorrosive paints shall be applied before fixing them in position.

14.0 C I COWL TYPE VENTILATORS:

The C I Cowl type ventilator should be of 100 mm dia shape with flanged and

roughing screen shall be as per Appendix - A. The rate includes providing and

fixing C I Cowl type ventilator as per Appendix - A including cost of all jointing

materials such as nuts, bolts, white zinc rubber packing etc. Two coats of

anticorrosive paints shall be applied to the surface before they are fixed in

position. They shall be first for approved by the Engineer-in-charge.

15.0 PROVIDING & FIXING M.S. LADDER INSIDE CONTAINER:

Contractor shall have to fabricate and fixed M.S. ladder. The ladder to be fixed

shall be fabricated from M.S. flat of 10 mm x 65 mm or M.S. angle having

equivalent modular of selection 20 mm dia. Bars shall be fixed at 30 mm c/c. to

act as steps. The ladder shall be 45 cm. wide if length of ladder is more than

m. Three coats of approved anticorrosive paint shall be applied to the ladder.

The design of M.S. ladder shall be got approved by the Engineer-in-charge before

it is fabricated and fixed in position. Rate includes providing and fabricating,

painting and fixing in position of M.S. ladder as above.

16.0 CONSTRUCTION OF VALVE CHAMBER:

Number and size of valve chamber shall be as per Appendix - A. Specification of

various items such as B.B. masonry cement plaster, C.M. (1:3) and C.C. (1:3:6) at

bottom. RCC 1:2:4 etc. shall be as these given in column of specification

published by G W S & S Board and as those prevailing in Division.

17.0 PAINTING LETTER:

Following words shall be painted on the container 40,000 liters capacity. The

letters shall be 45 cm high and the black ground of suitable color shall be

provided. Approved enameled paint shall only be used for painting letters and

background. Entire work shall be carried out as per instruction of Engineer-in-

18.0 PROVIDING & FIXING GI PIPE RAILING AROUND TOP SLAB:

Railing shall consist of 3 raw of 25 mm dia GI pipes fixed in M.S. angles of 60 mm

x 60 mm x 6 mm 0.9 m. height fixed at 2 m c/c. The materials shall be got

approved by Engineer-in-charge before fabrication. Three coats of approved

anticorrosive paint shall be applied to M.S. angle before they are fixed in

19.0 WEATHER PROOF EXTERIOR PAINTS:

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The work shall be carried out as per instruction of the Engineer-in-charge. The

Weather Proof exterior paint shall be best quality shall be got approved before

The surface shall be prepared by removing all mortar dropping and foreign matter

and thoroughly cleaned with wire or fiber brush or and suitable means and

washing the surface. All loose pieces shall be scrapped out and hole shall be

stopped with mortar. After cleaning the surface the watering hole surface and

applied acrylic exterior paint in three coats.

20.0 WATERPROOF CEMENT PLASTER:

The cement mortar shall consist of two parts of fine river sand free from any dust and

other organic matter and one part of approved quality of cement. The mortar

shall be properly mixed on watertight platform. The mortar shall be used within

half an hour after mixing. The water proofing materials weighting 1.5 kg of

powder in one bag of cement shall be added.

The plaster shall be applied in uniform thickness of 20 mm and shall be properly

smoothened with wooden & finished with cement finishing of required. The curing

shall be done at least for week by sprinkling the water over the wall. The wall

shall be tested for waterproof ness. The rate includes the cost of waterproofing

materials. The test for waterproof ness shall be carried out by the contractor at

his own cost by filling the contractor with water and it shall be checked out that

there is no percolation of water from the wall. Payment shall be made per sq. m.

of plaster done.

18.0 BRICK PITCHING:

The brick shall be of proper quality, standard size, uniform in color, well-burnt

and free from cracks. The work of brick pitching shall be carried out in C.M. 1:6.

It shall be laid as per the drawing and directed by the Engineer-in-charge. The

bricks shall properly soak before being using in work. No brickbats shall be use

except the bricks. The joint shall be racked out 20mm depth. Every day at the

end of the days work the cement pointing in C.M. 1:2 shall be carried out by line

as directed by the Engineer-in-charge. The excavation required for brick pitching

shall have to be carried out by the contractor as directed including necessary

temping consolidation etc. complete.

After completion & testing of work the contractor shall have provide & fix the

Marble 'Takti' of required size with necessary writings, as directed by the

Engineer-in-charge.

22.0 RCC work of container should be of well finished condition if the same is not

satisfactory than contractor since have to finish the surface with 12 mm thick

plaster C.M. without any extra cost.

23.0 The contractor shall have to make arrangement for testing of steel bars brought

on site and concrete cubes, for different mix at different stage like foundation,

shaft, column, cube should be cast on site and send Govt. approved laboratory for

compressive strength at 28 days. Results must be produced in office before taking

payment of work done. Testing charge must bear by contractor.

24.0 Conditions: The paint is supplied in two packs, fine zinc dust mixed with epoxy

resin as base and liquid hardener. They are to be mixed in following ratio.

By Volume By Weight

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1) Mixed Paint Properties

I) Viscosity 20+3% seconds by flow

Cup No.4 @ 30 0 C

ii) Specific Gravity 1.70+3%

iii) Post life of mixture 6-8 hrs.

iv) Zinc dust content on DFT 92+/-3%

v) Finish Smooth and Matt.

vi) Drying time

Surface dry 5 minutes

Hard Dry Less than 1 hr.

vii) Over coating after Minimum 24 hrs.

Maximum No limit

viii) Flash point Above 23 o C

ix) D.F.T. 20-25 microns depending on blasting

x) Compatibility Compatible with all systems of paints

like Bituminous, conventional,

chlorubber vinyl and epoxy

xi) Toxicity Non toxic

3) Application: By Brush/Spray (Air and Airless)

4) Thinner: Epoxy thinner shall be used if required.

5) Coverage: 10 Sq. m./liter at 25 microns.

6) High build black paint.

1) Dry time Surface dry not more than 4 hours Hard dry

not more than 18 hours Film

thickness per coat 75 micron.

2) Consistency Thixotropic liquid

3) Covering Capacity 5 Sq.m./liter

4) Color Black/Brown/Black in alternative layer

7) Characteristics:

The coating shall be non-phenolic, non-toxic. It shall afford a highly durable

protective air tight coating to prevent corrosion or rusting of iron and steel

against air moisture/water and shall be of sufficient elasticity to prevent racing,

blistering or peeling. It shall retain its consistency at the ordinary atmospheric

temperatures when packed in suitable containers. After application of drying, the

coating shall not show any surface cracks due to drying, weathering action or

expansion and contraction. Its resistance to water must be perfect. It shall also

be resistant to weak acid and alkalis, natural salts and to dry heat up to

centigrade. It should have good brush ability.

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The primer as well as paint shall have to be applied as per the manufacturer's

specification. The paints shall be tested in the laboratory by the owner at the

cost of the contractor if found necessary. The manufacturer shall accompany

each lot of primer and paint supplied. The entire procedure of applying the

coating as specified shall be rigidly inspected right from cleaning stage to

application of final coat.

26.0 Mode of measurement and payments:

The measurement shall be taken per U\G SUMP Design & constructed on site as

per dept. requirement/data sheet.

Payment will be as per payment schedule.

Item No .02 Providing and supplying in standard length ISI mark rigid unplasticized

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. complete.

1.One coupler / ring shall be provided with each full-length pipe cost of which is

included in rates below.

2. 3% (Three) Discounted rate to be consider for Coupler jointed pipe

3. Rate for PVC Resin as Rs. 91739/MT (Price Without GST).

i) 125 mm Dia 6 kg/cm2

ii) 140mm Dia 6 kg/cm2

UNPLASTICIZED PVC PIPES With Excise Duty Test pressure 6 Kg / cm

For Indian manufacturers a valid license issued by the Bureau of Indian Standards

for marking the PVC pipes with ISI mark is a mandatory requirement both for PVC

The UPVC Pipes to be manufactured, supplied and delivered under the scope of

this contract shall be manufactured in accordance and confirming to IS:4985-2000

or its latest revision or amendments or other authoritative standard that ensure

at least a substantially equal quality to the IS:4985-2000 or its latest revision or

Electrometric sealing ring shall be as per specification of IS – 5382-1985, and ISO:

4633-1996 or it shall be EPDM rubber ring.

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

with its latest revision or amendments

The minimum wall thickness weight shall be as per Appendix I ofthe tender.

The colour of pipes shall be as per IS 4985-2000

Bureau of Indian Specifications (BIS) / Indian Standard (IS) shall mean the Latest

version issued by BIS.

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The material from which the pipes are made shall consist substantially of

unplasticized polyvinyl chloride conforming to IS: 10151, to which may be added

only those additives that are absolutely needed to facilitate the manufacture of

the polymer, and the production of sound, durable pipes of good surface, finish,

mechanical strength and opacity.

The bulk density of the UPVC compound shall be 0.50 to 0.53 and the density of

UPVC pipe shall be 1.40 to 1.46 g / cm3.

The additional of the manufactures own rework material shall comply to clause

PVC resin of suspension grade K-66/K-67 shall be used for extrusion of UPVC pipe.

In line with BIS 4985-2000 the tolerance on outside diameter of the pipe shall be

Nominal outside Min. outside diameter Outside diameter at any

Diameter in mm point in mm

Minimum Maximum Minimum Maximum

“The pipes shall be transported to the store by flat floored trucks in pre packed

wooden crate. The height of crate should not be exceedingly more than 2 meters.

The both ends of packaging unit (crate) shall be covered with plastic sheet to

ensure adequate protection during transport. At the time of packing and stacking

of pipes, the sockets shall be alternated within the pipe of pipes and shall project

sufficiently for the pipes to be correctly supported along their whole length. The

pipes shall rest uniformly on the vehicle bed over their whole length during

transport to avoid sagging or deformation.

The packing material like wooden crate, plastic sheet etc. shall be the properly of

tenderer and he is permitted to reuse the packing material for transporting next

batch of pipes”.

 The pressure rating of pipes shall be in accordance with IS 4985 with a maximum

continuous working pressure at 270 C. of 6 & 10 kg/cm2. This working pressure shall

be downgraded for ambient underground soil temperature of 450 C. as per the figure

given in IS 4985 for design purposes.

 The pipes when subjected to internal hydrostatic pressure in accordance with IS:

12235-1986 (part – 8) shall not burst during the prescribed test duration. The

temperature, duration and test and induced internal stress shall conform to the

parameters given below:

Sr. Test Temp. Min. Induced Requirements

No. (0C) duration Stress (Mpa)

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1 Type test 60 1000 10 No failure

2 Acceptance 27 1 36 No failure

 The integral socket of the pipe shall be tested for internal hydrostatic pressure

in accordance with ISO: 3603 and ISO

 The UPVC pipe shall not contain vinyl chloride monomer (VCM) exceeding

ppm when determined by means of gas phase chromatography using the

“headspace” method according to IS:

 The wall of the socket and the wall of the plain pipe shall not transmit more

than 0.2% of visible light falling on them when tested in accordance with

IS:12235 (part -3).

The pipes shall be supplied in straight length of 6 mtrs with tolerance of

+20mm and -0mm. The effective length of socket pipe shall be considered as

shown in figure 2 of IS

All plastic and non-plastic material for components of the UPVC piping system

e.g. Elestomeric sealing ring, lubricants, when in permanent or in temporary

contact with water which is intended for human consumption, shall not

adversely affect the quality of the drinking water.

Concentrations of chemicals, biological agents or other substance leached

from pipe materials in contact with drinking water and the values of the

relevant physical parameters, shall not exceed the maximum values

recommended by IS:

The pipe material shall be in accordance with IS 4985, clause 6.3.

 The quality control system and sampling model shall be as under:

Quality Control System and Sampling Model

Order of Tests to be By Inspection / andards

conducted Manufacturer PMC to be

representativ followed

Raw Material Laboratory test Verification of IS: 4669 For every batch

1) Resin certificates test of PVC resin

K-valve Particle size from the certificates used prior to

dis.Bulk density original and witness of formulation of

2) PVC compound manufacturer sample test at compound

VOLUME-III PRICE BID

Quality Control System and Sampling Model

Order of Tests to be By Inspection / andards

conducted Manufacturer PMC to be

representativ followed

density of resin and pipe

confirmation of manufacture’s

the same by laboratory at

the pipe discretion

Process Check Degree Minimum one May witness ASTM D Test shall be

of fusion of extruded specimen per test during 2152 conducted on

UPVC pipe by Acetone extrusion inspection samples form

immersion test. condition or each machine

On line Check Quality Each & every Sample IS: 4985 Wall thickness

Outside diameter Wall pipe shall be testing shall ISO: 2045 shall also be

thickness Length of checked by the be done for Specificat checked by

pipe surface finish manufacturer acceptance of ion cutting the pipe

Socket dimensions during the lot as per at any place by

extrusion of sampling the inspector

Finished product Min. 2 samples Sample IS: 4985 Test records

check. per machine testing shall IS: 12235 shall be

Reversion test per shift shall be done as Part 5&6 submitted to

be tested per IS 4985, PMC on request

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Quality Control System and Sampling Model

Order of Tests to be By Inspection / andards

conducted Manufacturer PMC to be

representativ followed

Stress relief test Table 6&7

Drop impact test Min. 1 samples Sample IS: 4985 Whenever the

Internal Hydrostatic per machine testing shall IS: 12235 pipe is cut for

pressure test. per shift be done as Part 8&9 hydrostatic

Pressure test for per IS 4985, ISO 3603 test, the

integral joint Table-8 inspector will

also verify the

Capacity Effect on Min. one One sample IS: 4985 Test records

water sample for per 100 km of IS: 12235 shall be

every change length of Part submitted to

in compound supply at the 3,4&10 PMC on request

formulation discretion of

Long term hydrostatic Min. 3 samples May witness Is: 4985 Test records

test of different test during IS: 12235 shall be

diameter from inspection submitted to

the regular PMC on request

production lot.

Density Min. one Min 5 samples IS: 8543 Reconfirmation

sample per per lot part 1/ may be done at

machine per sec 2 store by

shift checking the

Ash content Min. one Min 5 samples MTNL Reconfirmation

sample per per lot Standard/ may be done at

machine per ISO: 3451- store by

shift 5 checking the

Vicat softening temp. Min. one Min. one ISO :

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Quality Control System and Sampling Model

Order of Tests to be By Inspection / andards

conducted Manufacturer PMC to be

representativ followed

sample per sample per

machine per lot.

Temperature variations:

All the pipes 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.

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 followings;

i) Certification mark on each pipe.

ii) Manufacturers brand name and/or trademark.

iii) Purchasers mark as “GWSSB” be inscribed.

iv) The outside diameter and pressure rating.

v) Batch number or lot number.

vi) Inspector’s mark on each pipe

vii) Any other important matter that the manufacturer or purchaser deems fit to be

Elastomeric sealing ring

These sealing rings shall be Sturine But ad in in red color as specified in IS.

The lubricant applied for jointing of elastomatic rubber ring shall be of good

quality and comply the following specifications:

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a) Must have paste like consistency and be ready for use, preferably

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 carry ion the pipe.

f) Must not have an objectionable odour.

g) Must not harmful to the skin.

Elastomatic sealing ring shall be in accordance with one of the types (Type - 1 to

Type – 6) as per ISS 5382. These sealing rings shall be EPDM rubber ring. The sealing

ring shall be with ISI mark.

In case of imported EPDM Ring, such rings shall conform to relevant International

Standards or the Standards of country of origin, which are equivalent or higher than

the Bureau of Indian Standard Specifications. In case of manufacturers who have

applied for getting a BIS certification mark, it would be mandatory for such bidders

to produce the BIS certification license on or before the date of opening of the

price bids. An undertaking in this regard shall have to be provided along with the

The rubber sealing rings shall be vulcanized from Ethylene Propylene (EPDM) with

strengths as per table 2 of IS 5382-1985.

a) Type test capacity, test for effect on water, test for resistance to Sulfuric

Acid, internal Hydrostatic pressure test for 1000 Hrs. shall be carried out at

least once at any time during the contract. Or shall be taken at least once

during every six months irrespective of the ordered quantity.

b) The said type test shall be taken by the GWSSB’s representative or third-

party inspection agency at the in-house laboratory of the manufacturer

color of pipes:

- The color of the pipes shall be as per IS 4985-2000.

- The pipes shall bear ISI mark confirming to IS:4985-2000 or its latest

amendment/revision if any.

test for pvc resin & pipe:

Test For PVC Resin

It shall be sufficient to show the certificate of chemical test (in accordance with IS

4669) to the inspecting authority to confirm the 'K' value to be 64 to 67 as per

clause No. 6.1.2. of IS 4985-2000

Specific Gravity and Ash Content Tests:

These tests shall be carried out by the inspection agency as per the IS:4985-

2000 OR its latest revision OR amendments. The value shall be between

and 1.46 as per the ISS clause No.

b) Sulphate Ash content:

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When tested as per Annex B, of IS 4985-2000, the sulphated ash content in

the pipe shall not exceed 10 percent.

c) Other test shall be carried out as per ISS 4985-2000 or its latest revision or

tolerance in weight of pipes:

(-) 1% tolerance in actual weight of pipes shall be allowed but in overall

weight there should not be any minus tolerance i.e. minus tolerance may be

compensated in overall weight. If the tolerance is in minus, the consignment

shall be outright rejected. The weight of pipes as given in Appendix-I shall be

considered. If required the consignee can weight the whole lot of supply for

Quality Assurance

The manufacturer shall have a laid down Quality Assurance Plan for the

manufacture of the products offered which shall be submitted along with the

Unit weight and minimum wall thickness of unplasticizes ring fit type PVC

pipes are as per IS 4985-2000.

The bidder shall have to arrange for random testing of pipes brought on

site, in CIPET in the presence of GWSSB's representative and on

satisfactorily report from the CIPET the payment of pipes will be made.

Bidder must be purchasing pipes from the approved vendor of GWSSB

METHOD OF MEASURMENT OF PIPES:

The measurement shall be recorded in running meter of pipe length laid along

center line or axis of pipe line including tees, enlarges, reducers and bends

correct up to 0.01M. length. No payment shall be made for overlaps etc.The

payment shall be paid after completion of whole item as mentioned in price

bid on Running Meter basis. And As Per Payment Schedule.

Item No .03 Providing and supplying ISI mark G. I. pipes with Couplings of following

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

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

departmental stores, stacking etc. complete. (IS -1239) (Not for well/tube

well column pipe) i) 150mm Dia. Medium Duty.

(i) The required dia. of pipes in required pieces shall be threaded on each

and shall be provided by the contractor with necessary all specials such

as bends, tee, reducer, flange union Rubber packing etc. comp.

(ii) Required specials shall be brought by contractor at his own cost for

which no extra payment shall made by dept.

(iii) Pipe shall be laid & fixed as per instruction of Engineer in charge.

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Any leaking in joints is observed during hydraulic testing it shall be

rectified by the contractor without any extra cost.

(v) The measurement shall be recorded Running Meter basis as per payment

Item No .04 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.

A) Sluice Valve with ISI Mark Only. PN-1 with handwheel/cap operated (P-

D.type short body) i) 100 mm dia

A) Sluice Valve with ISI Mark Only. PN-1 with handwheel/cap operated (P-

D.type short body) ii) 150 mm dia

Design Features

Sluice valve shall conform to IS 14846 (ISI Marked). Except pump house, these

valves are to be installed in valve chamber. All valves of pump house and rising

mains shall be non-rising stem type.

The valves shall be free from sharp projections, which are likely to catch and hold

stringy materials. Valves shall close with clockwise rotation of the hand wheel.

The direction of closing and opening shall be marked on the hand wheel.

Necessary joining materials viz. bolts, nuts, washers, packing etc. shall be

provided by the contractor at his cost. The valves shall be fixed so as to have axis

perfectly horizontal. If required the contractor shall also carry out drilling of

holes of appropriate diameter in flanges in required numbers. A hand wheel shall

be provided for emergency operation. The hand wheel drive shall be mechanically

The valve design shall take care of the pressure drop across the valve disc in case

of partial opening of the valve and shall take care of the erosion and cavitation

effect on the body and disc during such operation. Valve(s) subjected to back

pressure shall have the valve seat, disc and the operator suitably designed to

ensure trouble-free operation. The shaft diameter shall take into consideration,

the maximum torque required for the valve operation, the maximum differential

pressure across the valve disc when the valve is closed and the shock load due to

accidental closure of the valve disc. The disc shall be designed for maximum

differential pressure across the valve as well as the shock load due to accidental

closure of the valve. Disc design shall offer minimum head loss. Disc shall also

offer minimum resistance to flow Disc shape shall be contoured.

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Valve seats shall be of a design that permits removal and replacement at site and

shall be securely clamped on the body or disc of the valve. Seat material shall be

suitable for the operating conditions and handling fluid and may be suitably

reinforced, if required. The seat design shall permit easy removal for

replacement purposes without the need for removing the valve from the line. No

deposited or welded seat rings permitted. The valve bearings shall be of 'self-

lubricated' type and shall not have any harmful effect due to handling fluid.

Adjustable thrust bearing(s) shall be provided to hold the valve disc securely in

the center of the valve seat. Each Sluice Valve shall be provided with a hand

wheel for manual operation. For the Valves located at inaccessible position, it

shall be provided with extension spindle and floor stand or hand lever / round

chain to facilitate manual operation.

Hydrostatic Test

Each valve body shall be subjected to hydrostatic test (Body and Seat) as per IS

14846. For valves subjected to back pressure condition, leakage test shall be

carried out on both sides of the disc.

Performance Test

Each valve complete with operator shall be shop operated at least three (3) times

from fully closed to fully open conditions and reverse, hold at intermediate

positions under no flow condition, to prove the workability of the assembly.

Positive material Identification (PMI Test)

PMI test shall be checked at random for Stainless steel parts.

Test Certificates

When specified by Owner, the manufacturer shall issue a test certificate

confirming that the valves have been tested in accordance with this standard and

stating the actual pressures and medium used in the test.

Marking shall be cast integral on the body or on a plate securely attached to the

body for ‘DN’ size, ‘PN’ rating, Heat Number and Serial number.

Each valve shall be drained, cleaned, prepared and suitable protected with

coats of red oxide and then black bituminous paint for minimum of 150 micron

DFT on surfaces before dispatch.

Electric Actuator

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Each actuator shall be adequately sized to suit the application and be

continuously rated to suit the modulating control required. The gearbox shall be

oil or grease filled, and capable of installation in any position. All operating

spindles, gears and head stocks shall be provided with adequate points for

lubrication. The valve actuator shall be capable of producing not less than 1½

times the required valve torque and shall be suitable for at least 15 minutes

continuous operation.

The actuator starters shall be integrally housed with the actuator in robustly

constructed and totally enclosed weatherproof housing. The motor starter shall

be capable of starting the motor under the most severe conditions. The starter

housing shall be fitted with contacts and terminals for power supply, remote

control and remote positional indication, and shall also be fitted with internal

heaters so as to provide protection against damage due to condensation.

Each starter shall be equipped as follows: i. A.C. electric motor. ii. Reduction

gear unit. iii. Torque switch mechanism complete with set of torque switches. iv.

Limit switch mechanism complete with set of limit switches. v. Hand wheel for

manual operation. vi. Hand-auto changeover lever with suitable locking

arrangement. vii. Local control switch / push buttons viii. 415 V / 240 V AC

control transformer.

The actuator shall be suitable for operation in the climate conditions and power

supply conditions given in the specification. The actuator shall be capable of

producing not less than 1½ time the maximum required torque and shall be

suitable for at least 15 minutes continuous operation. All local controls shall be

protected by a lockable cover.

SLUICE VALVE/GATE VALVE

No ent PN- 1.0/1.6 PN-2.0 PN-2.5 PN-4.0

CI IS 210 Gr. ASTM A216 Gr. ASTM A216 Gr.

1 Body WCB/ ASTM

CI IS 210 Gr. ASTM A216 Gr. ASTM A216 Gr.

2 Bonnet WCB/ ASTM

CI IS 210 Gr. ASTM A217 Gr. ASTM A217 Gr. ASTM A217 Gr.

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CI IS 210 Gr. ASTM A216 Gr. ASTM A216 Gr.

4 Gland WCB/ ASTM

5 Stem SS 410 SS 410 SS304 SS

IS 318 Gr ASTM A217 Gr. ASTM A217 Gr. ASTM A217 Gr.

LTB-2 CA15 CA15 CA15

Graphoil Filler Graphoil Filler

7 Graphoil Filler with SS 304 wire with SS 304 wire

winding winding

ASTM A320 Gr L7 ASTM A320 Gr L7 ASTM A320 Gr L7

8 Nut Bolts Carbon steel and ASTM A194 and ASTM A194 and ASTM A194

9 Nut and SS 304 SS 304 SS

10 Cast Iron Cast Steel Cast Steel Cast Steel/SS

Flange ASME/ANSI B16.5 ASME/ANSI B16.5 ASME/ANSI B16.5

End Class 150 Class 300 Class

MODE OF MEASUREMENT AND PAYMENT

Measurement shall be paid on number basis as per relevant dia. of the item

in Payment schedule of the tender.

Item No .05 Providing and supplying specials to GI pipes 150mm dia. GI Elbow (M)

Providing and supplying specials to GI pipes 150mm dia. Coupling G.I

 Manufacture, Supply & Delivery of G.I. Specials of various diameter and class. The

delivery of specials is to be made to site of works including all taxes, loading,

unloading, carting, stacking, insurance, inspection charges, Octroi etc. complete.

 Specials shall conform to the appropriate dimensions. Specials shall be formed

from straight pipes butt-welded by metal arc process.

 G.I. Specials with all types of diameters suitable to pipes with inner cement

 The outside diameter of specials shall conform to the outside diameter of the

standard straight pipes.

 The ends of pipe-ended specials shall be truly circular and shall conform to the

tolerance required for fitting of mechanical couplings and flange adaptors.

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 The necessary G.I. Specials required during the lowering & lying of G.I. Pipe shall

be supplied by the agency and shall be as per standard specification and as per IS

specification. It shall be of best quality as per requirement.

 Rate shall be including loading, unloading, carting, insurance and labour charge

 The payment shall be made on Number basis.

Item No .06 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. (i) 50mm dia. Air Valves

(Double Acting, DS-2)

Tamper proof air valve confirming to AWWA C 512, having outlet for admission and

release of bulk volume of air during emptying and filling of the pipeline. The ball

sealed orifice shall always remain open while air is exhausting and is immediately

closed when Water rises in the chamber, lifts the ball and seals the orifice.

It shall also ensure that there are no recesses or pockets, sheltering, escaping air

for the large orifice (low pressure) ball to drop into when the valve open.

Turbulent air at the time of filling of pipe shall not circulate in such cavities and

cause the ball to blown into when the valve is open.

Turbulent air at the time of filling of pipe shall not circulate in such cavities and

cause the ball to blown into the discharging air streams, blowing the valve shut

prematurely. The cone angle of the lower pressure chamber shall be such that even

at the critical velocity of all air escape at 300 m/sec.

The total impact force on the ball is less than the suction force on the angular area

between the ball and the cone. The design of the valve should be such as to allow

maximum free air discharge at various pressure differentials.

The low-pressure cover shall be massive and designed to withstand full operating

thrust in working Conditions. The seat ring shall be held securely in place under the

low-pressure cover by a joint support ring to prevent it from sagging when the ball

is not sealing the orifice.

All valves shall hydrostatically be tested by the manufacturer before dispatch. The

pressure shall be obtained without any significant hydraulic shock. Testing shall be

carried on before application of paint. There shall be no air entrapped within the

part of the valves subjected to test pressure. Test pressure as per AWWA C512 or

Positive material Identification (PMI Test)

PMI test shall be checked at random for Stainless steel parts.

Test Certificates

When specified by Owner, the manufacturer shall issue a test certificate confirming

that the valves have been tested in accordance with this standard and stating the

actual pressures and medium used in the test.

Marking shall be cast integral on the body or on a plate securely attached to the

body for ‘DN’ size, ‘PN’ rating, Heat Number and Serial number.

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Each valve shall be drained, cleaned, prepared and suitable protected with 2 coats

of red oxide and then black bituminous paint for minimum of 150-micron DFT on

surfaces before dispatch.

TAMPER PROOF AIR VALVE

No Component PN- 1.0 PN-1.6 PN-2.0

1 Body CI IS 210 Gr. FG260 CI IS 210 Gr. FG260 ASTM A216 Gr. WCB

2 Cover CI IS 210 Gr. FG260 CI IS 210 Gr. FG260 ASTM A216 Gr. WCB

3 Float SS 410 SS 304 SS

4 Seat EPDM EPDM EPDM

5 Float Guide SS 410 SS 304 SS

6 Orifice SS 410 SS 304 SS

7 Gasket EPDM EPDM EPDM

8 Nut Bolt Carbon steel Carbon steel Stainless Steel

ASME/ANSI B16.5

9 Flange End IS 1538 IS 1538 Class

Erection of Air valve riser

1.0 SUPPLY OF MATERIAL

1.1 150 mm & 80mm Dia. Mild Steel pipe shall be supplied and carted by the

contractor. The rate shall include loading, unloading and stacking at site.

1.2 The mild steel pipe shall be examined before erecting for cracks and other

flows. They shall be undamaged in all respect.

1.3 The mild steel pipe shall be properly checked before erecting.

1.4 All grits and foreign materials shall be removed from the inside of MS pipe

before erecting.

1.5 All the faces of pipe shall be thoroughly cleaned.

2.0 JOINTING MATERIAL

2.1 The contractor shall provide all necessary jointing materials such as nuts

bolts, rubber packing white zinc jute lead wool etc.

2.2 All tools and plant required for installation of sluice valve shall be provided

by the contractor.

2.3 All jointing materials shall be not approved from the engineer-in-charge

2.4 The nut and bolts shall conform to Item No MSP-19 of specification of

2.5 The rubber packing shall confirm all specifications as narrated in Item No

MSP-20 of specifications of materials.

Specifications for Air Riser for Pipeline are as under:

The work of air valve riser shall be carried as per drawing attached. Column/

Footings for Air riser pipe shall be carried out in cement concrete M-150 using

trap metal as per instructions and workmanship of the engineering in charge.

Materials and workmanship shall be given in concrete section.” The

reinforcement as per IS Standard and specifications. The item Air Valve raising

includes the cost of providing and laying cement concrete M-150 base MS clamps,

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MS pipe 4.50 mt., M.S. flange, nut, bolts, rubber packing and cement concrete

column in M-150 etc. complete.

3.0 MODE OF MEASUREMENT AND PAYMENT

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

Item No .7 Excavation for pipe line trenches for water supply, sewerage line,

manhole etc. all with shoring and strutting 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) Up to 1.50 mt depth

(i) In all sorts of soil and soft murrum

Excavation for pipe line trenches in all types of strata (including hard rock)

including all safety provisions using site rails and stacking excavated stuff up to a

lead of 90 mts.,cleaning the site incl. jungle cutting etc. The earth cover over

the top of the pipe shall be 1.0 meter. The minimum width of trench should be

25 cm on each side of the pipe except PVC & HDPE pipes. The rate includes cost

of extra excavation for working space at joint, dewatering, blasting if required

and as per detailed specification etc.

In all sorts of soil and soft murrum

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

trenches in wet / dry conditions for pipe laying work.

2. 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 off as directed.

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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 leveled

off, as may be directed.

3.0 SETTING OUT:

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 labor materials etc. required for setting out and establishing benchmarks

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

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 leveled 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

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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

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.

Width for PVC Pipes shall be 0.60 mtr.

5. SHORING AND STRUTTING:

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

khalkuva (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. The excavation in all sorts of soil, hard murram, soft rock or hard rock or any

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

no extra payment shall be given for soft/ hard rock.

8. DISPOSAL OF EXCAVATED STUFF

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

than 1.5 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.

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9. ADDITIONAL REQUIREMENTS

9.1 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 include 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 slop 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 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 crest of read.

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

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

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. MEASURMENT AND PAYMENT

10.1 Payment shall be made on Cmt. Basis.

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

(a) Clearing of site

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

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

(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 of work.

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

progress of work.

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

khalkuva soapiest etc. if damaged by contractor without extra payment.

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

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

Item No .8 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.

(i) 125 mm Dia. PVC Pipe.

(ii) 140 mm Dia. PVC Pipe

The excavation for trenches shall be done before laying of the pipes as per

required depth and width so that adequate space can be made available for

2) The pipes & joints shall be procured, supplied by the Contractor at work

site at his own cost. Every care shall be taken in carting them to site.

During transportation any damage shall be occurring to pipes for fittings

the replacement of pipes given by the contractor at his own cost.

3) Before laying the pipes it shall be brushed throughout length so that the

dust and soil can be removed.

4) Reducer bends tees, and adopter etc. to be supplied by the contractor as

per requirement.

5) All the specials such as bends, tees, reducer, etc. shall be fixed as per

instruction of engineer-in-charge in the pipeline.

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6) The pipe shall be hydraulically tested during the testing no leakage shall be

observed. If, leakage observed, it shall be set rightly by the contractor at

his own cost as per the instruction of engineer-in-charge. The payment

shall be as per payment schedule.

b) PVC Specials

1. 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.

2. 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

The Scope For The Item Cover

Cost of additional excavation required for jointing clearing the site of all scrubs,

bushes, and trees and dewatering where necessary.

Labour for laying pipes in trenches to correct alignment at required depth with

tools, including cutting of pipes and specials if required for laying of pipes

including connecting pipes to specials and appurtenances. Cost of the scaffolding,

tools and plants, ropes etc.

Protection of existing works from damage and cost of repair to the damages

carried out to the existing structure, sewer line telephone/electricity cables,

electric cables, electric lines, gas pipe line, irrigation pipe line etc

Providing, supplying and fixing all PVC specials required for laying.

The pipe laying across the state highways, national highways etc. will have to be

done either through open cut method or through push through method depending

upon the requirement to be prescribed by the sanctioning authority. However,

mostly it would be push through method.

GWSSB will not be able to provide water for testing of the pipelines & water

containers of the project. This shall have to be managed by the contractor at his

Labour for making joints including jointing material for joints, tools as well as

tests. Testing of pipes for leakage under water pressure and flushing the pipes

after testing and construction work shall have to be arranged by the contractor at

After each section of the pipeline has been completed it shall be tested for water

tightness before being covered. The contractor shall at his own cost fill up water

in pipe line and given necessary hydraulic test section by section and the pipe line

shall stand the pressure which shall stand the pressure which shall exceed the

working pressure by (a) 50% of the highest pressure in the section. (b) 30m

whichever is less without showing any leakage or sweating anywhere in the pipes

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joints specials valves etc. it any defect are found the contractor shall be made

good the same at his own cost.

Any leaking joints shall be made good and above test pressure in to be lowered

gradually after satisfactory test is & over.

GWSSB will not be able to provide water for testing of the pipelines & water

containers of the project. This shall have to be managed by the contractor at his

costs and risk.

The hydraulic test shall be given again if considered necessary by the Executive

Engineer or his representative to show that no further leakages or sweating is

there. The contractor shall have to make necessary arrangements for water

testing as well as plugging the opening of pipes etc. as directed without claiming

any extra cost. The pipelines shall be kept filled with water for a work lines shall

be kept filled with water for a week or till it is situated for testing is done.

If the pipe lines are laid in detached sanctioned & not in continuous length due

to any reasons such as non-availability of specials or due to obstacle etc. The

contractor shall see that no end of pipes length is kept open-ends are

immediately covered up either by suitable blank flange or cap slug or by means of

double layer gunny bags clothes tied properly by mild steel wire without any claim

for extra-cost.

Method Of Measurement Of Pipes:

The measurement shall be recorded in running meter of pipe length laid along

center line or axis of pipe line including tees, enlarges, reducers and bends

correct up to 0.01M. length. No payment shall be made for overlaps etc. The

payment shall be paid after completion of whole item as mentioned in price

bid on Running Meter basis.

Item No .9 Lowering, laying and jointing G. I. pipes with G. I. specials of following

diameters in proper position, grade and alignment as directed by Engineer-

in-charge including conveyance from stores to site of work, labour, giving

hydraulic testing, etc. complete. i) 150 mm Dia. Medium Duty.

1. The excavation for trenches shall be prepared before laying the pipe as per

required width and depth so that adequate space shall be made available for

2. Pipe shall be lifted from store to site by any Agency at his own risk & cost.

Damage if any during transportation shall be recovered from the contractor.

3. Before laying the pipe it shall be brushed throughout the length so that dust soil

can be removed from the pipe. Pipe shall be laid in the trench in straight line.

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4. All the specials such tees, bends, reducers etc. shall be brought by the contractor

at his own cost and fixed as per instruction of Engineer in charge of work.

5. Pipeline shall be hydraulically tested after laying. The length of section shall not

more than 300 mtr. The section in test shall be subjected to pressure 1.5 times

working pressure during testing No leakage shall be observed to the joints. It shall

be set right by the contractor at his own cost as per instruction of Engineer in

charge 30% of payment shall be with held for testing.

METHOD OF MEASURMENT OF PIPES:

6. The measurement shall be recorded in running meter of pipe length laid along

center line or axis of pipe line including tees, enlarges, reducers and bends

correct up to 0.01M. length. No payment shall be made for overlaps etc. The

payment shall be paid after completion of whole item as mentioned in price bid

on Running Meter basis.

Item No .10 Refilling the pipeline trenches incl. ramming, watering, consolidating,

disposal of surplus stuff as directed within a radius of 3 km.

 On completion of the pipe laying operations in any section, for a length of about

100m and while further work is still in progress, refilling of trenches shall be started

by the Contractor with a view of restricting the length of open trenches. Pipe laying

shall closely follow the progress of Trench Excavation and the Contractor shall not

permit unreasonably excessive lengths of trench excavation to remain open while

awaiting testing of the pipeline. If the Engineer considers that the Contractor is not

complying with any of the foregoing requirements, he may prohibit further trench

excavation until he is satisfied with the progress of laying and testing of pipes and

refilling of trenches. The excavated material nearest to the trench shall be used

filling. Care shall be taken during backfilling, not to injure or disturb the pipes,

joints or coating. Filling shall be carried out simultaneously on both sides of the

pipes so that unequal pressure does not occur. Walking or working on the completed

pipeline unless the trench has been filled to height of at least 30cm over the top of

the pipe except as may be necessary for tamping etc., during backfilling work.

 The remaining portion of the trench may be filled in with a mixture of hard and soft

material free from boulders and clods of earth larger than 150mm in size if sufficient

quantity of good earth and murrum are not available. The trench shall be refilled so

as to build up to the original ground level, keeping due allowance for subsequent

settlement likely to take place. The top 300mm layer or fertile agricultural soil shall

be kept aside during excavation and shall be laid in layers near ground level during

 To prevent buckling of pipe shell of diameters 1200mm and above, pipes shall be

strutted from inside while the work of refilling is in progress, for which no separate

payment shall be made.

 Strutting shall be done by means of strong spiders having at least 6 arms which shall

be sufficiently stiff to resist all deformation. Spiders shall be provided at a maximum

interval of 2m & shall be welded in such a way that internal coating does not get

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 The Engineer shall, at all times, have powers to decide which portion of the

excavated materials shall be for filling and in which portion of the site and in what

manner it shall be so used.

 If any material remains as surplus it shall be disposed of as directed by the Engineer,

which includes loading, unloading, transporting and spreading as directed within all

lead. If the Contractor fails to remove the earth from site within 7 days after the

period specified in a written notice, the Engineer may arrange to carry out such work

at the Contractor's risk and cost or may impose such fine for such omission as he may

deem fit. Particular care shall be taken to keep the trench dry during the entire

refilling operation.

 If suitable material for refilling is not available for excavation the Contractor shall

bring earth, murrum of approved quality as directed by the Engineer.

 No mechanical plant other than approved compacting equipment shall run over or

operate within the trench until backfilling has reached its final level or the approval

of the Engineer has been obtained.

 Subsidence in filling in: Should any subsidence take place either in the filling of the

trenches or near about it during the maintenance period of 24 months from the

completion of the Contract Works, the Contractor shall make good the same at his

own cost or the Engineer may without notice to the Contractor, make good the same

in any way and with any material that he may think proper, at the expense of the

Contractor. The Engineer may also, if he anticipates occurrence of any subsidence,

employ persons to give him timely notice of the necessity of making good the same,

and the expenses on this account shall be charged to the Contractor.

MEASURMENT AND PAYMENT

 Payment shall be made per CMT of work done.

ITEM NO. 11 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.

A) Sluice Valve with ISI Mark Only. i) 100mm dia

B) Sluice Valve with ISI Mark Only. ii) 150mm dia

C) Air Valve (Single Acting & Double Acting) (i) 50mm dia. Air Valves

(Double Acting, DS-2)

Lowering, Laying and Jointing of Sluice valve/ Butterfly valves/Air Valves

(i) Cast iron double flanged sluice valve/butterfly valves with two tail pieces suitable

to pipe shall be supplied by the board and they shall be carted by the contractor at

his own cost from the departmental store or any other store as directed. The rate

shall include loading, unloading and stacking at site.

(ii) The sluice valve/butterfly valves and tail pieces shall be examined before laying

for cracks and other flows. They shall be undamaged in all respect.

(iii) The sluice valves/butterfly valves shall be operated before laying.

(iv) All grits and foreign materials shall be removed from the inside of the valves before

(v) All the four faces shall be thoroughly cleaned and coated with a thin layer of

mineral grease.

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(vi) The tightening of gland shall be checked with a pair of inside-calipers. Clearance

between the top of stuffing box and the underside of the gland shall be uniform all

1.0 JOINTING MATERIAL

1.1 The contractor shall provide all necessary jointing materials such as nuts bolts,

rubber packing white zinc jute lead wool etc.

1.02 All tools and plant required for installation of sluice valve shall be provided by the

1.3 All jointing materials shall be not approved from the engineer-in-charge before us

1.4 The nut and bolts shall conform to Item No MSP-19 of specification of materials.

1.5 The rubber packing shall confirm all specifications as narrated in Item No MSP-20 of

specifications of materials.

2.0 INSTALLATION

2.1 The sluice valve/butterfly valve shall be lowered in to the trench carefully, so that

no part is damaged during lowering operation.

2.2 If necessary tail pieces shall be fitted with sluice valve first outside the trench and

then lowered in to the trench.

2.3 The rubber packing shall be three ply and of approved thickness. The packing shall

be of full diameter of the flange with necessary holes and the sluice/butterfly

valve bore. It shall be even at both the inner and outer edges.

2.4 The flange faces thoroughly greased.

2.5 If flange faces are not free, the contractor shall use thin fibers of lead wool.

2.6 After placing the packing, nuts and bolts shall be inserted and tightened to make

2.7 The valve shall be tightly closed when being installed to prevent any foreign

materials from getting in between the working parts of the valve.

2.8 Each flange bolt shall be tightened a little at a time taking care to tighten

diametrically opposite bolts alternatively.

2.9 The sluice valve/butterfly valve shall be installed in such a way that its spindle shall

remain in truly vertical position.

2.10 The other end of tail piece shall be fitted with pipes so that continuous lines can

2.11 Extra excavation required for facility of lowering and fixing sluice valve shall not be

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3.1 After installation of sluice valve/butterfly valve the same is tested to 11/2 times of

its test pressure.

3.2 The joints sluice valve/butterfly valve shall withstand the test pressure of

3.3 Defects noticed during test and operation of sluice valve shall be rectified by the

contractor at his own cost without any extra claim to the entire satisfaction of the

Engineer-in-charge.

4.0 MODE OF MEASURMENT AND PAYMENT

4.1 The measurement shall be taken per number of sluice valve/butter fly valve of

specified size.

4.2 The rate shall be per number fitted in a pipe line.

4.3 For non-testing of valve 30% of the rate quoted shall be withheld till testing is

ITEM NO. 12 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) Up to 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

12.1 size of chamber 0.60 X 0.60 m and 1 Mt. deep with precast slab in

12.1.1 For 1mtr Extra Depth

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.

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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 molded, 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

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

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.

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

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

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

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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

leveled. 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 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

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

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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.

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 in charge.

ITEM NO. 13 Erection of air valve riser by installing new M.S pipe of 6mm thick and

3.2mt length with necessary fittings such as flange of appropriate size,nut

bolts and embeded the pipe in R CC M;15 with offset of 10 cm around pipe

with necessary steel etc complete.

(i) 50mm dia. Air Valves (Double Acting, DS-2).

Work of raising Air valve shall be carried out as per item and instruction of Engineer

 For raising Air valve necessary PVC pipe for Air valve, G.I. heavy duty coupling if

required, G.I. flange heavy duty, jointing materials such as nuts-bolts, rubber

packing etc. shall be brought by agency at free of cost and shall be of best quality

and got approved by Engineer in charge.

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 Length of G.I. pipe shall be instruction of Engineer in charge as per drawing and

only heavy duty class pipes shall be allowed, otherwise it shall be rejected. In any

case length of pipe required more than suggested should be on account of

contractor. No extra payment will be made for that.

 Rate includes necessary excavation, Fitting of Air Valve and refilling as required.

 Rate includes necessary bedding in C.C. 1:1.5:3 & protected column in C.C.

1:1.5:3 as per drawing and specification laid in P.W.D. hand book.

Lowering, Laying and Jointing of Air valve

(i) The Air valve and tail pieces shall be examined before laying for cracks and

other flows. They shall be undamaged in all respect.

(ii) The Air valve shall be operated before laying.

(iii) All grits and foreign materials shall be removed from the inside of the valves

before placing.

(iv) All the four faces shall be thoroughly cleaned and coated with a thin layer of

mineral grease.

(v) The tightening of gland shall be checked with a pair of inside-calipers.

Clearance between the top of stuffing box and the underside of the gland

shall be uniform all the sides.

1.0 JOINTING MATERIAL

1.1 The contractor shall provide all necessary jointing materials such as nuts

bolts, rubber packing white zinc jute lead wool etc.

1.02 All tools and plant required for installation of Air valve shall be provided by

the contractor.

1.3 All jointing materials shall be not approved from the engineer-in-charge

1.4 The nut and bolts shall conform to Item No MSP-19 of specification of

1.5 The rubber packing shall confirm all specifications as narrated in Item No MSP-

specifications of materials.

2.0 INSTALLATION

2.1 The Air valve shall be lowered in to the trench carefully, so that no part is

damaged during lowering operation.

2.2 If necessary tail pieces shall be fitted with sluice valve first outside the trench

and then lowered in to the trench.

2.3 The rubber packing shall be three ply and of approved thickness. The packing

shall be of full diameter of the flange with necessary holes and the Air valve

bore. It shall be even at both the inner and outer edges.

2.4 The flange faces thoroughly greased.

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2.5 If flange faces are not free, the contractor shall use thin fibers of lead wool.

2.6 After placing the packing, nuts and bolts shall be inserted and tightened to

make the joint.

2.7 Each flange bolt shall be tightened a little at a time taking care to tighten

diametrically opposite bolts alternatively.

2.8 The valve shall be installed in such a way that its spindle shall remain in truly

vertical position.

2.9 The other end of tail piece shall be fitted with pipes so that continuous lines

2.10 Extra excavation required for facility of lowering and fixing sluice valve

shall not be paid for.

3.1 After installation of valve the same is tested to 11/2 times of its test

3.2 The joints valve shall withstand the test pressure of pipelines.

3.3 Defects noticed during test and operation of valve shall be rectified by the

contractor at his own cost without any extra claim to the entire satisfaction of

the Engineer-in-charge.

MODE OF MEASURMENT AND PAYMENT

 The measurement shall be taken per number of Air valve riser of specified size.

 The rate shall be per number fitted in a pipe line.

 Hydraulic testing shall be given by the agency and 30% payment shall be withheld

 It will be released after satisfactory testing

ITEM NO. 14 Drilling of Horizontal bore hole for water main pipe line under the

Railway / Road tracks in all strata with required length include in fixing of

M.S. (or as specified by Railway / Road authority) casing pipe of suitable

size and Thickness Rate includes the cost of Drilling of bore hole, Casing

pipe & welding pushing etc complete but excluding the cost of watermain,

valves and other items. Entire works hould be as per Approved Drawing

and as per instruction of Railway / Road authority for Following diameter

of Bore hole. for IRS pipe. c)

For 300mm dia bore hole (Watermain 168mm).

At railways, public highways, at such other crossings as are shown in the

construction drawings issued by the company the pipeline shall be installed in MS

casing pipes conforming to the specifications given herein.

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The casing pipes shall be installed in accordance with the details given in

drawing and the casing, bushing and insulators, etc., shall be installed on the

carrier pipe as detailed in drawings. Casing pipe size shall be about 100 mm

(Hundred millimeters) larger than the carrier pipe to facilitate the insertion of the

later without disturbing the casing pipe and to provide adequate drainage, Casing

shall be installed with even bearing throughout its length and shall slope towards

one end, as specified or desired by the engineer-in-charge. The ends of the casing

shall be sealed to outside of carrier pipe in accordance with the details given in

Before installation, holes for installing vent pipes shall be cut and burrs if any shall

be removed. The welding of both carrier pipe and casing pipe shall be done in

accordance with the welding specifications, given herein. Before installing the

casing pipe, it should be cleaned of all internal obstructions and during installation

care should be taken to keep the inside clean.

The section of carrier pipe to be placed in any casing shall be closed at each end,

hydrostatically tested preferably with dead weight tester for at least two hours.

Only on successful completion of this test, shall the carrier pipe section be inserted

in the casing pipe. The installation of casing may open cut as circumstances may

permit or require as directed by the engineer-in-charge.

The installation of casing in bended section of the carrier pipe shall be performed

by metre bends of the casing pipe provided that the length of each metre cut out

of casing pipe shall be such as to provide a clearance of at least 1-1/2" between

the inside of the casing pipe and the outside of the coated carrier pipe.

Excavation for casing installation shall be immediately backfilled at the completion

of the work with suitable solid matter and packed thoroughly to prevent seepage of

water into the excavation.

ROAD, RAILWAY AND IRRIGATION CANAL CROSSINGS:

At road, canal and railway crossings the work shall be performed to the

specifications of local authorities or such public bodies as may be in charge (S) of

roads, railways and canals to be crossed.

In case, however the minimum requirements of the governing agencies are less

than those set out in the drawing or the specifications given herein, then the

requirements given in the drawings and the specifications given for encased line

shall be followed.

Whereas the casing pipe in the case of encased line to be laid normal by boring,

tunneling, engineer-in-charge may at his discretion permit open-cuts to be made

for the installation of casing provided, however, that the TENDERER shall procure

the necessary permit / license for the same from competent authority. At locations

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wherein the open cut methods are permitted, the TENDERER shall pass the carrier

pipe through the casing located in the trench after the approval of the engineer-in-

charge in writing and care shall be exercised to avoid damage to pipe coating and

wrapping during this operation. The TENDERER shall produce a certificate in writing

from concerned authorities for its satisfactory restoration and payment therefore.

At all crossings the carrier pipe shall be laid straight without bends so that if

necessary, the pipe at a later date may be replaced without cutting the casing. The

carrier pipe shall extend at least 2 meters beyond the end of casing pipe at either

At railway crossings the TENDERER shall eliminate unnecessary bending of pipe to

conform to the contour of ground by gradually deepening the ditch at such

approaches as directed by the engineer-in-charge. Where the installation of the

casing has been made by open cut TENDERER shall install suitable temporary bridge

work ensuring the safety of the traffic aids and safeguards for protection of the

public safety, or he shall provide suitable diversions as desired by the engineer-in-

At all railways pipeline crossings shall be bored with horizontal boring machine.

The method of carrying out a cased crossing by boring for various crossings on this

pipeline route shall be jointly inspected by the representative of the COMPANY and

TENDERER for each category of work prior to commencement of actual work.

Pipeline under railway track and irrigation canal an applicable portion of the right-

of-way shall be encased in accordance with the specification. This item of work

shall include, necessary clearing and grading required therefore, trenching to the

depths and widths required, welding of casing and carrier pipes, testing, lowering

in, installation of vent assembles, end seals, insulator and all other fittings that

may be required, backfilling, clean up, complete restoration to the original

condition and further strengthening and protective works as may be required. The

work shall be carried out in accordance with the drawings and as directed by the

engineer-in-charge. For various operations mentioned above, the specifications

pertaining to these operations shall apply in addition to the specifications given

The TENDERER shall be permitted to use William Sons type Neoprene seals in place

of concrete end seals for the crossings. The item shall be procured by the

TENDERER himself as per the provisions under the appropriate head of work in case

TENDERER so desires. The representative of the COMPANY may also be associated

to determine the quality of the material and its delivery schedule from the open

market. However, the particular work defined under the proper head shall not be

delayed on account of non-availability of Neoprene end seals. In such case,

concrete seals may be provided.

On both ends of pushing concrete supports are to be provided as per direction of

engineer-in-charge.

VOLUME-III PRICE BID

MODE OF PAYMENT:

The payment shall be made on Rmt. basis.

ITEM NO. 15 Labour charges for Reparing of Leakage in PVC Pipeline of following

diameter at different places lncluding necessary excavation manually or by

mechanise excavation, removing of mud, cleaning of Pipe & Leakage

Portion, cutting the pipeline & Remove the Piece of Pipe from trench with

inclusive of mechanical deviced JCB, Hydrs/Crain if Necessary & Labour

Requires with Providing Material Such as Couplers, Solution etc. Comp.

(Incl. all Material but Excl. of Cost Of Pipe) (For Job Connection With

Existing Pipeline)

The all material required such C.I.D. joints with nut bolt, rubber rings etc. shall

be supplied and carted by the contractor as per latest IS. The rate shall

include loading, unloading and stacking at site.

i) The Pipe required for the repairing of leakage shall be carted at store or

site to site of work on of cost including freighting, loading, unloading with