Providing, Installing & Commissioning Chlorination plant and Construction Of Chlorine Neutralisation Pit and Chlorine romm at Different Sub H/W in Modhera Group RWSS Of Becharaji Chanasma Taluka Di.Mehsana Patan under M&R to Modhera Group RWSS

Estimated Cost : Rs.

Gujarat Water Supply & Sewerage Board

Zone-2, AHMEDABAD

Bid Documents for Design, Build & Operate Contract for

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

Volume-III, Price Bid, Page No.-

Name of Work:- “Providing, Installing & Commissioning Chlorination plant and

Construction Of Chlorine Neutralisation Pit and Chlorine romm at Different Sub H/W in

Modhera Group RWSS Of Becharaji/Chanasma Taluka Di.Mehsana/Patan under M&R to

Modhera Group RWSS’’’’

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

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

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

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

formats will be rejected and the Bids will be disqualified.

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

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

not be permitted to withdraw his bid on this account.

be free supplied from the by client.

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

rate as called for against the BOQ item.

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

of the Contract Agreement.

and evaluation.

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

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

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

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

comparison and evaluation.

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

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

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

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

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

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

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

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

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

works covered under the bid and all liabilities and contractual obligations

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

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

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

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

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

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

Volume-III, Price Bid, Page No.-

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

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

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

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

maintenance and final removal of all temporary works of whatsoever nature

required for construction including temporary bunds, diverting water,

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

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

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

(15) Prices shall be filled online only.

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

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

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

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

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

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

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

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

contractors working for GWSSB.

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

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

schedule furnished.

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

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

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

cess which is non-refundable.

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

the same will be borne by GWSSB.

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

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

to misinformation shall be recovered from the contractor.

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

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

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

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

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

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

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

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

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

Volume-III, Price Bid, Page No.-

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

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

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

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

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

particular items only.

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

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

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

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

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

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

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

the statement showing the quantity of quarried materials / minerals from

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

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

contractor shall also furnish such additional information as regards royalty

payment to the competent authority.

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

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

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

due amount of the agency.

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

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

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

the responsibility.

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

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

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

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

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

may be required for the purpose.

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

documentary evidence substantiating the actual payment of tax duly certified

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

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

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

Signature of contractor Executive Engineer

P. H. Works Division

Volume-III, Price Bid, Page No.-

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

THE EXECUTIVE ENGINEER,

PUBLIC HEALTH WORKS DIVISION,

SUB: “Providing, Installing & Commissioning Chlorination plant and Construction Of

Chlorine Neutralisation Pit and Chlorine romm at Different Sub H/W in Modhera Group

RWSS Of Becharaji/Chanasma Taluka Di.Mehsana/Patan under M&R to Modhera Group

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

more details in various sections of this bid document.

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

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

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

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

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

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

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

in accordance with the conditions.

2. I/We agree that

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

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

testing of materials and workmanship.

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

Engineer’s representative.

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

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

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

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

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

Acceptance issued to us by you.

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

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

of 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-II, “General Conditions of Contract”.

Volume-III, Price Bid, Page No.-

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

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

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

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

(Name of the Person)

Company Seal _____________________

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

Witness Signature ___________________________

Volume-III, Price Bid, Page No.-

Name of Work:- “Providing, Installing & Commissioning Chlorination plant and

Construction Of Chlorine Neutralisation Pit and Chlorine romm at Different Sub H/W in

Modhera Group RWSS Of Becharaji/Chanasma Taluka Di.Mehsana/Patan under M&R to

Modhera Group RWSS’’’’

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

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

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

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

Rate at which the

Sr. material will be charged Place of

Particular Qty.

No. to the contractor Delivery

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

the Engineer in Charge at the time of issue tender.

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

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

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

position shall be provided at his own cost.

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

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

market rates or departmental issue rates whichever is higher.

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

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

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

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

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

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

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

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

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

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

Signature of Executive Engineer Deputy Executive Engineer

contractor Public Works Division P.H.Sanitary Unit

Mehsana Modhera

Volume-III, Price Bid, Page No.-

Name of work :- Providing, Installing & Commissioning Chlorination plant and Construction Of Chlorine

Neutralisation Pit and Chlorine romm at Different Sub H/W in Modhera Group RWSS Of Becharaji/

Chanasma Taluka Di.Mehsana/ Patan under M&R to Modhera Group RWSS

Sr. Total Rate Amount

DESCRIPTION OF ITEM Unit

No. Quantity in Rs. in Rs.

Providing, Supplying & installing Vacuum

Control Direct wall mounted gas chlorinator

including necessary fittings, installation and

commissioning of plant incl. Clamp, copper pipe,

ferule filter & control valve with injector D. 5 Kg.

Providing, Installing and Commissioning

Chlorination plant as per design and capacity

Gravity Feed type at kalari, Jasalpur, Dharmoda,

Pimpal, Islampura, Lanava

Providing, Supplying & Safety Kit for 100 Kg

Capacity Tonner

Providing, Supplying & Safety Kit for 900 Kg

Capacity Tonner

Providing, Supplying Digital Chlorine Detector

Monitor meter- 0 to 20 ppm Capacity

Providing and supplying Air breathing appratus

6 as per IS:10245 Part-II with 45 minutes duration 9.00 No. 41380.00

7 Chloroscope 0.5 ppm including testing materials 9.00 No. 1443.00

8 U PVC SCH40 for cold water 25 mm dia (1)" 720.00 Rmt 42.37

Providing and fixing Gun metal check or non-

return fullway wheel valve. (C) 25mm dia.

Supplying & erecting approved make self-

priming domestic monoblock water pump with

10 1 H.P motor, suitable for operation on 230 volts, 5.00 No. 7603.00

50c/s. AC supply with metallic flange, and M.S.

impeller delivery and following discharge

Volume-III, Price Bid, Page No.-

Designing (aesthetically) and constructing R.C.C

frame structure of pump room with positive

suction / Negative suction

With Gantry structure (Min. Height 4.5 M)

Upto 6.00 M (Plinth Level to Top slab Beam

Kalari And Jasalpura SHW 48.00 Sq.Mt. 15301.72

12 Chlorine Nutrilizition Pit 7.00 No. 77024.58

Providing and fixing heavy-duty (5 mm to 8 mm

thick) laminated vinyl print mounted on rigid

13 hard board/PVC foam board including high- 42.00 sq.ft 54.16

resolution printing, lamination, edge finishing

and proper installation, complete as directed.

Painting Numbers or name on Acrylic plate as

Directed by Engineer in Charge.

Providing and supplying caustic soda flakes to

15 different location as directed by Engineer 3900.00 kg 50.00

Modhera Main HW

SHW (kalari, Jasalpur, Dharmoda, Lanava,

Pimpal, Islampura)

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

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

our tender works out as under.

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

Deduct________% above Add________% above

Signature of Executive Engineer Deputy Executive Engineer

contractor Public Works Division P.H.Sanitary Unit

Mehsana Modhera

Volume-III, Price Bid, Page No.-

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

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

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

part payment to the Contractor.

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

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

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

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

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

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

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

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

covered by any of the heads indicated in the breakup.

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

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

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

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

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

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

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

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

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

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

Signature of contractor Executive Engineer

P. H. Works Division

Volume-III, Price Bid, Page No.-

DETAILED TECHNICAL SPECIFICATIONS

Description Page

 General Specification & List of I.S. Codes

 Specifications for Providing, Supplying & Fixing

Vacuum Operated Chlorination plant for

Volume-III, Price Bid, Page No.-

1 GENERAL SPECIFICATION

1. The Specification attached with this tender are in modification of the specification

for the respective item as required for this work.

2. All the petty items of this work shall be carried out in workman like manner.

3. Work order book is maintained on work site as per present practice and the

contractor shall sign and carry out promptly the order given by the Engineer-in-

4. The contractor shall maintain a regular account of receipt and use of controlled

materials purchased by him and or supplied by the department.

5. De-watering of trenches foundation etc. shall be done by the contractor at his own

cost during execution of all items of this work till completion in all respect.

6. The contractor shall provide his own arrangement conveyance and the carting of

pipes specials etc. to be supplied by department and surplus excavated stuff from

and to site of work.

7. Extra charges or claims in respect of extra work shall not be allowed unless the

work to which the rate are already distinguished from execution of the contractor.

He shall have to keep the account of such materials in suitable book, which

should be available for inspection by the Engineer- in- charge or his

Volume-III, Price Bid, Page No.-

representative. The contractor shall be responsible for proper handling and safe

custody of all materials issued to him by the department.

The contractor shall have to provide necessary shoring, strutting arrangement for

protecting the excavated portion of trench. Similar deep structure when

excavation goes beyond 1.5 mt. from G.L. proper care shall to be taken to avoid

due to falling of Kachcha wall portion. No extension in time limit will be considered

due to such carelessness and delay. Contractors shall have to provide at his own

cost all ways and means required for the excavation of the trench pit etc.

8. FINALISING ITEM OF WORK:

The details given in design plan section or specification schedule, general

condition etc., shall be taken in the consideration and all these items shall have to

be carried out. In case of any discrepancy of these the decision of the Project

Director Urban Cell, G.W.S.S.B. shall be final and binding to the contractor.

9. The contractor shall have to pay town duty and or octroi if any to the respective

authorities for which no extra payment will be made to the contractor.

10. The contractor shall be responsible to pay compensation to his staff and to his

labor according to the labor compensation rules.

11. The drawing prepared is for general guidance. However, during execution, if it is

found necessary Engineer- in- charge will prepare working drawing showing

details and supplied to the contractor for execution and it will be binding to the

contractor to carry out work accordingly without claiming any extra cost.

12. The work shall be executed on strict accordance with the plans and specifications.

Only the best materials and the soundest construction shall be permitted and

every portion of the work shall be executed in like manner to the satisfaction of the

Engineer- in- charge whose decision shall be final and binding to the contractor.

All the materials used in work shall be of the best quality and any materials

rejected shall be removed from the site of work by the contractor at his own cost

within 24 hours.

13. The specification attached with this tender shall strictly apply and in addition

following general conditions are also bound to the contractor.

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

as per specifications given in P.W.D. Hand book vol.I & II and as per instruction of

the Engineer- in- charge from time to time. The contractor shall have to clear the

site of work before the work is commenced and also after the work allotted to him

is completed for which separate claim cannot be made.

2. Other responsibilities:

Volume-III, Price Bid, Page No.-

i) The contractor shall engage an experienced and qualified Engineer as his

authorized agent for the work who shall be responsible for the work, and shall

take from time to time such order as may be given by the Engineer- in- charge

and carry out promptly.

ii) In addition to the requisite stores the contractor shall provide at his cost suitable

temporary office with a cover area of about 37 sq.mt. With a particular sitting

arrangement inside and necessary finished furnished for the use of owners staff

while the work is in progress.

1. The contractor shall provide at his own cost all laborers, pegs, strings, the other

materials as may be required for lining and setting out and for taking

measurement of the work. The contractor shall also provide at his own cost

satisfactory and adequate facilities like scaffolding, ladders, etc. for checking,

supervision and measuring the contractor's work by the Engineer. The contractor

shall have to provide skilled and unskilled laborer free of cost for the above.

2. The contractor shall responsible for proper handling and safe use of the materials

delivered to him by owner for use of work and shall return all the surplus materials

immediately after completion of the work along with account conforming the

balance. If any material, returned is found short or damaged or unserviceable the

cost there of fixed by the Engineer-in- charge shall be recovered from the

3. The contractor shall provide at his own expense necessary housing

accommodation, water supply and sanitary arrangement for his staff and laborers

and shall pay direct to the authorities concerned all rates and taxes royalties and

4. Water required for the execution of the work shall be supplied by the contractor at

his own cost in the manner satisfactory to the Engineer- in- charge. Water

required for testing shall also be supplied by the contractor.

5. Contractor shall be responsible for any accident to work or any damage done to

adjoining property in which case he shall have to make it good at his own

3. Declaration:

1. The contractor shall make declaration as under:

‘I am thoroughly conversant with the local cognition as regards the availability or

otherwise of all construction materials, skilled and unskilled laborers on which I

have based and tender my rates for this work. The specifications, drawing etc., of

this work have been carefully studied and understood by me before the

submission of this tender.’

2. In case of offer based on contractor's own design in acceptance then the

contractor shall supply free of cost six copies of detailed plans and all relevant

design calculation for scripting and record of work immediately on acceptance of

Volume-III, Price Bid, Page No.-

tender. The design and drawing submitted by the contractor shall be got

approved by the department before commencing execution of work.

3. In case of offer accepted based on contractor’s own design and completion of

work the contractor shall also have to supply free of cost six copies of detailed

plans of work as executed for record.

4. In case of contractor’s own design the tenderer shall have to furnish the details of

design calculation, quantity of various items and all RCC and other structural

details together and working drawing shall be supplied by the tenderer after the

design got approved by the competent authority. The contractor shall be

responsible for the technical soundness of the design submitted by him. The

structure shall be designed as the best recognized engineering practice and as

per current Indian Standard codes of practice and if any provisions are found to

be inadequate or faulty necessary modification shall be made by the contractor at

his entire cost in order to get required high soundness as well as performance

etc., and no extra payment shall be made for such modification etc.

5. In case of departmental design the plans enclosed along with the tender may be

further elaborated as and when necessary with details working design and

drawing supplied to the contractor. He shall be bound to carry out the work as per

the approved design, drawings, specifications and conditions for the accepted

tender amount. In case of any discrepancy in plan and specification approved

design will form the base for execution of work and decision of the competent

engineer of the owner will be final for contractor for carrying out the work at the

accepted tender amount.

6. Corrections, additions and declaration in form in English should be deemed to

have been incorporated in Gujarati version of the corresponding clause

irrespective of the fact that the Gujarati version is correct or otherwise for

interpretation purpose also the meaning of English version shall be final.

General Specification of Materials:

Specification of materials will be as per PWD Hand book Vol –I & II and standard

specifications (Material items) as adopted by Gujarat Water supply and Sewerage

Board and as per latest revision of Indian Standard.

1 All materials to be used shall conform to the relevant specifications as per the

latest version of Indian Standard unless otherwise specified in the detailed

specifications of item of work.

Volume-III, Price Bid, Page No.-

2. Wherever a reference to any Indian Standard appears in the specification, it shall

be taken to mean as a reference to the latest version of the standard.

3. Tests for materials shall be got carried out by the contractor when the same are

specified in the specifications. Tests shall also have to be carried out even though

the same are not specifically mentioned in specifications, if it is specified by the

Engineer-in-charge. If the Engineer-in-charge instruct the same are required to be

carried out in Government laboratories and cost there of shall be entirely borne by

the contractor.

4. No collection of materials shall be made before it is approved from the Engineer in

5. The item includes the supply of materials at site of work or store as specified

including railway freight, loading, carting, unloading, stacking as directed,

insurance, local taxes etc.

6. Collection of approved materials shall be done at site of work in a systematic

manner. Materials shall be stored in such a manner as to prevent deterioration on

intrusion of foreign matter and to ensure the preservation of their quality and

fitness for the work.

7. Materials if rejected by the Engineer-in-charge shall be immediately removed from

the site of work. If they are not removed within twenty four hours of receiving such

an intimation Engineer-in- charge shall get the same removed at contractor's cost.

The Engineer- in -charge shall dispose off such materials in the manner as he

choose and the contractor shall not be entitled to receive any cost of such

8. Approval to the samples of various materials, given by the Engineer-in -charge will

not relieve the contractor from the responsibility of replacing the defective

materials brought on site or materials used in the work found defective at a later

date. The contractor shall have no claim to any payment or compensation what

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

9. The contractor shall be responsible for observing the laws rules and regulations

under the prevailing Act and the rules prescribed by the Government from time to

10. All works shall be carried out as per instruction of Engineer-in-charge.

GENERAL CONDITIONS:

Volume-III, Price Bid, Page No.-

1 Tenderer may pay earnest money in form of demand draft of local bank on or

before date of submission of tender. EMD by cash or cheque or Bank Guarantee

shall not be accepted if not specified in condition.

2. The tender should be filled with ink.

3. In case of item rate tender i.e. B-1 tender the amount shown against each item in

the tender must tally with product of its rate, and quantity on basis of unit given. If

there is any error, than product of the rate and quantity or amount whichever is

less shall be allowed to the tenderer and considered for preparing comparative

statement and making payment.

The tenderer should give correct total in figures as well as words after adding

amounts of all items. In case there is any error the tenderer will be bound by the

total given by him of the current total (of all the item) whichever is less.

4. The contractor should attach the following documents with the tender.

i) Certificate of registration as approved contractor in respect of tenderer from

registered contractor.

ii) Solvency certificate for an amount equal to 20% of amount put to tender.

iii) Income tax clearance certificate from income tax officer concerned.

iv) List of work on hand showing cost of work yet to be completed with

certificate from the head of office concerned.

V) List of contract equipment available with him giving details of their capacity,

present condition and location.

vi) Copy of power of attorney and partnership deed in case of firm tendering

5. The contractor shall not be entitled for any claim due to natural calamities such as

earth quake, heavy rain etc.

6. Government shall not be responsible for any accidents. The contractor should

take insurance for the work for accidents on work.

7. The contractor shall have to take group insurance of laborers engaged for the

8. All the materials mentioned in schedule-B shall be purchased only

from Vendor list agencies approved by GWSSB published on website

www. gwwsb.gov.in. Purchase from other agencies shall not be

9. All Circulars for GST,R&B deptt and others are attached herewith at

Volume-III, Price Bid, Page No.-

the end of details of Technical Bid, which are strictly applicable to all

10 .Rates are inclusive of GST also.

2 List of Indian Standards to be followed where ever

Sr. Description I.S. Code OR

No. Latest Revision

1 CODE OF PRACCTICE FOR PLAIN AND 456-2000

REINFORCED CONCRETE

2 CRITERIA FOR EARTH QUAKE RESISTANT DESIGN 1893-2002

OF STRUCTURES: (GENERAL PROVISIONS AND (PART-I)

3 CRITERIA FOR EARTH QUAKE RESISTANT DESIGN 1893-2002

OF STRUCTURES: (LIQUID RETAINING TANKS, (PART-II)

ELEVATED AND GROUND SUPPORTED.) (DRAFT

4 CODE OF PRACTICE FOR DESIGN LOADS(OTHER 875-1987 (PART-

THAN EARTH QUAKE) FOR BUILDINGS & III)

STRUCTURES WIND LOADS.

5 CODE OF PRACTICE FOR DESIGN LOADS(OTHER 875-1987 (PART-

THAN EARTH QUAKE) FOR BUILDINGS & V)

STRUCTURES SPECIAL LOADS & LOADS

COMBINATIONS LOADS.

6 DUCTILE DETAILING OF REINFORCED CONCRETE 13920-1993

STRUCTURES SUBJECTED TO SEISMIC FORCES-

CODE OF PRACTICE.

7 CODE OF PRACTICE FOR CONCRETE STRUCTURE 3370-1965

FOR THE STORAGE OF LIQUIDS. (PART-I & II)

(PART-III & IV)

8 CRITERIA FOR RCC STAGING FOR OVERHEAD 11682-1985

9 SPECIFICATION FOR HIGH STRENGTH DEFORMED 1786-1985

BARS & WIRES FOR CONCRETE REINFORCEMENT

10 SPECIFICATION FOR HOT ROLLED MILD STEEL 1139-1966

,MEDIUM STEELS & HIGH STRENGTH DEFORMED

BARS FOR CONCRETE REINFORCEMENT

Volume-III, Price Bid, Page No.-

The tenderer should follow the I.S. codes which are not written above but in connection

with the work which he will execute.

ITEMWISE SPECIFICATIONS for Chlorination plant Work.

ITEM NO :: 1 ::

Providing, Supplying & installing Vacuum Control Direct wall mounted gas chlorinator

including necessary fittings, installation and commissioning of plant incl. Clamp, copper

pipe, ferule filter & control valve with injector.

VACUUM REGULATORS : operate on diaphragm backed by silver spring vacuum regulator remotely mounted on

manifold consisting of electrically operated heater for smooth flow of gas in cold climate; and as such, system

remains under vacuum condition till dosing point.

DIFFERENTIAL REGULATOR : Maintains steady flow rate and maintains constant vacuum beteween rate valve

and flow meter.

RATE SETTING : Manual adjustment at the rate valve located on differential regulator body along with flow

WATER REQUIREMENT : The water supply flow rate and pressure requirement depend upon the maximum

Chlorine capacity and back pressure at the outlet of the ejector. Back pressure includes the pipe functional

losses between Chlorinator and the point of application, plus existing back pressure at the point of

SEMI AUTOMATIC OPERATION : The Chlorine regulator will permit gas flow only when the ejector furnishes

sufficient vacuum. To operate the Chlorinator, it is necessary to initiate the ejector water flow. To stop

Chlorinator, it is necessary to interrupt the water flow. This 'On/Off' operation makes Chlorinator

semiautomatic. it can be accompanied by opening and closing of a solenoid valve in the injector water line.

The cabinet must be installed vertically and fastened to the floor. Trained service engineers are available to

install and service equipment at own cost.

As water under pressure flows through the ejector assembly, the vacuum is created in the ejector. This

vacuum exists at reduced values back through the differential pressure regulator and the vacuum regulator

are stacked to form a single unit - the Chlorine regulator.

The vacuum in the vacuum regulator moves the diaphragm which unseats the inlet valve, reducing the

Chlorine gas from supply pressure to water column vacuum.

The Chlorine gas then passes through the flow meter, the manual rate valve and into differential pressure

regulator. This regulator maintains a constant pressure drop across the rate valve .The gas flows from the

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regulator to the ejector where Chlorine mixes with water to form Chlorine solution, which is carried through

the distribution system to the point of application.

Semiautomatic, or start/stop operation is accomplished by starting and stopping the water flow through the

ejector by a solenoid valve or other means.

Flexible connector, NB 5/16” 16 SWG cadium plated Adoptor 5/8” BSP thread with nut Lead

gasket - 3mm Thick lead.

2) Roller Support

Part list and MOC for ROLLER SUPPORT (RLS - 65)

Drum Roller tunnion fabricated from steel , epoxy coated to resist corrosion, Roller are cadmium

plated and equipped with bronze bushing for ease of drum rotation. Frame have holes in end to

attached to floor via anchor bolts or lag anchors. One set of two tunnions are required for each

3) Gas Manifold

3/4” CARBON STEEL SCHEDULE 80 ASTM 106 Gr B

Drum gaseous chlorine manifold assembly complete with ¾” schedule 80 seamless carbon steel

pipe work and ¾” forged steel 3000 lb fittings painted with yellow chlorine resister rubber paint

for chlorine use, with manifold header valve (ISO/3224) 3/4” NPT inlet and 1.030-14 NGO out let.

4) Isolation Valve

Sr.No. Description MOC

1 SPINDEL MONAL

2 Bush Forged Brass

3 Glande Nut Forged Brass

4 Gland Packing Teflon

5 Valve Body Forged Silver Plated Bronze

6 Threads ¾” Bsp Taper

5) Pressure Guage

Design for Chlorine Service

Dial Size 65mm to 150mm

Range 0-16 Kg/Cm2

Mounting Bottom Connection mounting on Header Line

Type Chemical sealed diaphragm type with magnetic

contact Chamber construction

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Top chamber type Brass silver Plated

Bottom chamber type Brass silver Plated, Ti PTFE Padded (100% CL2

Diaphragm PTFE backed with Silver Foil

Connection type Bottom Connection

Connection size ½” NPT

Type of glass Laminated safety glass

Liquid filled Silicon Oil filled

Dial marking Black

6) Vacuum Switch

Loss of Vacuum: switch is designed to provide one normally open and one Normally closed alarm contact in the presence

of a loss of vacuum. It should be mounted Vertically as close to the Ejector as practical and -after the gas rate valve. The

alarm point is adjustable between 28 and 29 Inches of Mercury to allow the switch to actuate at the Required vacuum.

Contacts rated at 5 A @ 250 Vac or 28 Vdc

maximum, (Resistive Load),

Enclosure NEMA 4X.

Dimensions 102 mm W x 94 mm D x

BM5987, High Vacuum switch is designed to provide one normally open and one normally closed alarm contact in the

presence of a high vacuum level. It should be mounted Vertically as close to the Vacuum Regulator as practical and before

the gas rate valve. The alarm point is adjustable between 2 and s: Inches of Mercury to allow the switch to actuate at the

required vacuum.

Contacts rated at 5 A @ 250 Vac or 28 Vdc maximum,

(Resistive Load)

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Enclosure NEMA 4X.

Dimensions 102 mm W x 94 mm D x 145 mm H.

TEM QTY Description

1 1 ADJUSTMENT PLUG

3 1 HOUSING BCDY

5 2 SCREW, 6-32 X 3/8 LG BD HD

6 1 SPRING ADAPTOR

7 1 LOWER DIAPHRAGM PIN

9 1 DIAPHRAGM SPACER

10 1 UPPER DIAPHRAGM PIN

11 1 DIAPHRAGM SEAL

13 2 SCREW, 10-24 X 3/8 LG RD HD

14 2 SCREW, 2 -56 X 1/2 LG RD HD

15 1 MICROSWITCH

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16 1 LEVER ASSEMBLY

18 2 SCREW, 10- 24 X 1/2 LG RD HD

19 1 MOUNTING BRACKET

20 1 TUBING CONNECTOR, 1/4 X 3/8 X 90'

21 1 SCREW, 2-56 X 3/16 LG RD HD

7) Motorized Operated Valve

Type Flange End as per ANSI-B-16.5

Motorized Valve

Media Chlorine Gas (Dry)

Port Size Full Bore

End Connection Flange End as per ANSI-B-16.5

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Body Material C.S.

Plug Material Monal

Seat Material PTFE

Test Pressure 40 Kg/Cm2

Rated Output Torque Kg m

Operation Speed sec/90

Switching Frequency Operation/hr

Degree Of Protection IP 65 / IP

Area Of Operation Safe

Motor Type Non Blocking A.C. Motor

Supply Std. 220 V AC 50 Hz Single Phase

Supply optional 110 V AC 50 Hz Single Phase

Nominal Current 150 m A

Class Of Insulation F

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Embient Temperature C

Mode of measurements and payment:

The measurement shall be taken in No. and payment shall be paid on No. basis as per payment

ITEM NO :: 2 ::

Providing, Installing and Commissioning Chlorination plant as per design and capacity

Gravity Feed type at kalari, Jasalpur, Dharmoda, Pimpal, Islampura, Lanava

1. General System Requirements

 Type: Gravity Feed Gaseous Chlorinator (Passive/Vacuum-based).

 Operating Principle: Uses natural elevation head to deliver chlorine solution into the contact tank

without mechanical pumps.

 Capacity: To be sized per site-specific peak flow (typically 0.1 to 5.0 kg/hr for regional schemes).

 Residual Target: Must maintain a minimum free residual chlorine of 0.2 ppm at the farthest

distribution point.

2. Major Components & Materials

 Control Panel: Moisture-resistant Fiberglass (FRP) or epoxy-coated mild steel.

 Solutionizer Tower: Glazed porcelain or PVC, packed with pebble media or porcelain Raschig rings.

 Piping & Tubing:

o Dry Gas: Phosphorus deoxidised copper or carbon steel.

o Moist Gas/Solution: PVC, HDPE, or Teflon (PTFE) to resist corrosion.

 Valves: Pressure reducing valves (PRV), rapid-closing safety valves, and silver-plated brass stop

3. Safety & Ancillary Equipment

 Leak Detection: Ammonia torch kit and automatic chlorine leak sensors.

 Safety Gear: Self-contained breathing apparatus (SCBA) and emergency floor-mounted safety

 Handling: Overhead manual/electric hoist (min. 3.0 M.T. capacity) for handling 900kg tonners or

50kg cylinders.

4. Installation & Commissioning (I&C)

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 Hydraulic Testing: The entire line must be tested at 1.5 times the working pressure before gas

 Demonstration: Continuous 72-hour performance run to verify dosing accuracy and residual levels.

 Documentation: Provision of Operation & Maintenance (O&M) manuals, as-built drawings, and staff

training certificates.

Component Standard/Material

Gaseous Chlorinator IS 10553 (Part 4) compliant

Chlorine Purity 99.5% Minimum

Cabinet FRP / Aesthetic Steel Housing

Flow Meter Rotameter with ±2% accuracy

Mode of measurements and payment:

The measurement shall be taken in No. and payment shall be paid on No. basis as per payment

ITEM NO :: 3 ::

Providing, Supplying & Safety Kit for 100 Kg Capacity Tonner

PART LIST OF EMENRGENCY KIT

Big hood vent valve 1 No.

Rubber Gasket 1500 mm ID 90 mm) 3 No.

Stude with welded handie 1 No.

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Small Hood 1 No.

Rubber Gasket (ODi15 mm – ID 60 mm) 3 No.

Blind fiber gasket (1*O) 3 No.

Fiber Gasket (1.25*OD-0.75*ID) 3 No.

Steel Panch Plate 1 No.

Rubber Gasket (150 x 80 mm) 2 No.

Round yake plate 1 No.

Cap”s Crew 1 No.

Chain (96*long) 1 No.

Driff Plant (in 2 sizes) 2 No.

Valve Cap 1 No.

Yake Clamp 1 No.

Flexible copper tubing to draw chlorine 1 No.

Teflon Tape 1 No.

Canister Gas Mask 1 No.

PVC Hand gloves pair 1 No.

PVC apron 1 No.

Gas tight rubber goggles 1 No.

Amonia Torch 1 No.

Amonia Solution Bottle 1 No.

Valve Spindle Spanner (10 mm square) 1 No.

Spanner – 30 x 32 mm 1 No.

Spanner - ¾* x 5/8 * BS 1 No.

Instruction Manual 1 No.

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Steel Box 1 No.

Blind Fiber gasket (20 mm 0) 3 No.

Fresh Alrilpe Respirator 1 No.

Rate shall be paid per Set basis.

ITEM NO :: 4 ::

Providing, Supplying & Safety Kit for 900 Kg Capacity Tonner

1. Design Code : BS-1500 Part 1

2. Design Pressure : 20.771 Kg/sq.cm (305 PSIG)

3. Design Temperature : Suitable for Temperature upto 65/10 Deg. C

4. Radiography : 100% for all welded seams, by x-ray machine only.

5. Heat Treatment : Fully Stress Relieved

6. Corrosion Allowance : 1.6 mm (1/6") minimum

7. Water capacity (App.) : 769.4 Kgs (1696.23 16s)

8. Chlorine capacity (App.) : a) Normal Capacity : 916 kgs. (2019.43 16s) Approx.

9. Approval of design by 1) Lloyd's Register Industrial Services (India) P. Ltd.

2) Chief Controller of Explosive, Govt. of India

10. Inspection by : Lloyd's Register Industrial Services (India) P. Ltd.

11. Material of construction : C.S. Plates – SA 516 GR.70

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12. Shell thickness "S" : 12 mm

13. Dished ends thickness "T" : 12 mm (nominal)

14. Overall length "L" : 2060 + 12 mm

15. Diameter : 794 mm O.D.

16. Shape of Domes : Concave

17. Tare weight : 625 kgs (1377.88 16s) approx.

Mode of measurements and payment:

The measurement shall be taken in No. and payment shall be paid on No. basis as per payment

ITEM NO :: 5 ::

Providing, Supplying Digital Chlorine Detector Monitor meter- 0 to 20 ppm Capacity

Flammable - Catalytic Bead Detector

Toxics / Oxygen - Electrochemical Sensor

+ 2% of the range

(However it also depends on the accuracy of the calibration gas)

Response Time (T 90)

Generally less than 30 seconds

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3 ½ digit Liquid Crystal Display (LCD) with Low BAT indication

Low alarm : Visual

High alarm : Audio & Visual

Flammable : Rechargeable battery

Toxic / Oxygen : 9V Alkaline (Dry Cell)

Temperature : 0-50 C

Humidity : 0 to 95% R.H. non-condensing

Pressure : Ambient + 10%

Physical Properties

Dimensions : 175 x 85 x 30 mm

Rate shall be paid per number basis.

Providing and supplying Air breathing appratus as per IS:10245 Part-II with 45 minutes

duration cylinder

MODEL : SAVIOUR

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Saviour standard Self Contained Breathing Apparatus with Natural Rubber Face Piece and Saviour

easy flow Demand valve provides efficient, reliable and economical operation in hazardous Atmosphere. A

ideal option for any organization with hazardous atmosphere and statutory compliance.

Saviour Self Contained Breathing Apparatus set with wide view panoramic ISI mark face piece, with

rugged easy flow demand valve connected to Low pressure hose. Reducer with safety release valve

connected t o high pressure hose with gauge and warning whistle. Complete assembly mounted on anti

corrosive FRP back plate. Cushion padded 2000 kg resistant nylon harness attached to the ergonomic black

plate. Designed to connect various cylinders with international and national valves on 9 and 6 liters. The

complete set is packed in smart carrying case with instruction manual.

Economical option for safe working in hazardous atmosphere

Best option for statuary compliance

Back plate to accommodate 6 liters of 9 liters cylinders

Demand valve with air bypass for extra airflow

Cylinder Durations

Liters Bars Duration Approvals

6 200 45 Min CCE

Face Piece : ISI mark

Cylinder : CCE Approved

Hoses : As per EN Standards

Rate shall be paid per number basis.

ITEM NO :: 7 ::

Chloroscope 0.5 ppm including testing materials

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Chloroscope 0.1 to 5 ppm. It should be got approved from Engineer-in- charge before

supply should be carried out as per instruction of Engineer-in-charge.

Mode of measurements and payment:

The measurement shall be taken in No. and payment shall be paid on No. basis as per payment schedule

ITEM NO :: 8 ::

U PVC SCH40 for cold water 25 mm dia (1)"

The above work shall be carried out as per instruction of EIC, having the materials of approved make as per

Rate shall be paid per Mtr basis.

ITEM NO :: 9 ::

Providing and fixing Gun metal check or non-return fullway wheel valve. (C) 25mm dia.

1.0. Materials :

The gun metal check or not return full way wheel valve or specified dia. shall conform to I.S. : 778-

1964. The non-return valve shall be of tested quality.

2.0. Workmanship

2.1. The gun metal check or non return valve shall be fully cleared of all foreign matter before fixing. The

fixing of shall be done by means of bolts nuts and 3 mm. rubber insertions with flags of spigot and

socketed tail pieces, drilled to the same specifications as in case of socket and spigot flanges in case of

flanged pipes. The joining shall be done leak proof.

3.0. Mode of measurements and payment

3.1. The rate includes all labours, materials, tools and plant etc. required for satisfactory completion of this

3.2. The rate shall be for a unit of One number. Payment of Part-C Shall be done as per Payment Schedule

attached in Annexure- VI of Volume-I

ITEM NO :: 10 ::

Supplying & erecting approved make self- priming domestic monoblock water pump with

H.P motor, suitable for operation on 230 volts, 50c/s. AC supply with metallic flange, and M.S.

impeller delivery and following discharge

1. Motor and Electrical Specifications

 Capacity: 1.0 HP (0.75 kW).

 Power Supply: Suitable for 220V - 240V, Single Phase, 50 Hz AC Supply.

 Speed: Nominal 2800 – 2900 RPM.

 Insulation Class: Class 'B' or 'F' (to withstand high temperature rise).

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 Protection: IP-44 or IP-55 (protection against dust and water splashes).

 Duty: S1 (Continuous duty).

 Thermal Overload Protector (TOP): Motor must be equipped with an inbuilt TOP to prevent burnout

during voltage fluctuations.

2. Pump Construction (Hydraulic)

 Type: Self-priming, regenerative monoblock.

 Impeller: High-grade Mild Steel (M.S.) or Forged Brass (as per EIC direction). It must be dynamically

balanced to reduce vibration and noise.

 Pump Casting/Casing: High-grade Cast Iron (FG 200 or better).

 Shaft: High-quality Carbon Steel or Stainless Steel (SS-410) of adequate diameter to transmit full

 Sealing: High-quality Mechanical Seal with Graphite/Ceramic face to ensure zero leakage.

3. Fittings & Accessories

 Flanges: Matching Metallic Flanges (Cast Iron or MS) provided for both Suction and Delivery ends.

 Hardware: Gaskets (Rubber/Neoprene) and high-tensile nuts/bolts for flange connection.

 Base: The unit must be mounted on a rigid base plate or integrated feet for vibration-free operation.

4. Performance Requirements

 Suction Lift: Minimum 6 to 8 meters.

 Head Range: 6 meters to 30 meters (Total Dynamic Head).

 Discharge: * Minimum 2000 LPH at 15m Head.

o Minimum 500 LPH at 25m Head.

o (Final discharge values must meet the specific project schedule of rates).

5. Installation and Erection

 Foundation: Erecting on a leveled concrete pedestal ($M15$ grade) using foundation bolts or as

directed by the Engineer in Charge (EIC).

 Alignment: Proper alignment of the suction and delivery pipes to ensure no strain is transferred to

the pump casing.

 Priming: The pump must demonstrate its self-priming capability upon the first start after installation.

 Electrical Connection: Wiring using PVC insulated copper conductor cables of adequate rating,

housed in flexible conduits.

6. Testing & Approval

 Approved Makes: Only EIC-approved brands (e.g., Kirloskar, Crompton, Texmo, or Lubi) shall be

 Test Certificate: The contractor must provide a Performance Test Certificate from the manufacturer.

 Guarantee: Minimum 12 months from the date of commissioning against any manufacturing defects.

Summary Checklist for Submission

Component Requirement

Motor Power 1.0 HP (0.75KW)

Impeller Material Mild Steel (M.S.)

Suction/Delivery 25mm * 25mm

Voltage Range 180V to 240V

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Component Requirement

Included Fittings Metallic Flanges, Gaskets, Bolts

ITEM NO :: 11 ::

Designing (aesthetically) and constructing R.C.C frame structure of pump room with positive

suction / Negative suction

With Gantry structure (Min. Height 4.5 M)

Upto 6.00 M (Plinth Level to Top slab Beam bottom)

Excavation for foundation up to 1.50 mt depth including sorting out and stacking useful materials and

disposing the excavated stuff up to 50 meter lead in all sorts of soil and soft murrum.

1. The specification of the item shall be as per PWD hand book vol. I & II and as per the item moreover.

2. The rates include the cost of excavation in all sorts of soil including Shoring, Strutting, Watering,

Ramming etc. and sides shall be dressed properly as directed.

3. The excavation shall be done as per plan. The bottom shall be leveled and site shall be dressed

properly as directed.

4. The contractors have to excavate the trenches as per plan. B.B.C.C shall bring the excessive

excavation to desired level 1:5:10.

5. The contractor shall have to set right the incoming pipeline, Telephone cable etc. without any extra

cost. The contractor shall be fully responsible for any damage, any accident accrued during

6. Excavated materials shall be stacked at a distance at 2 Mt. from the excavation pit and surplus stuff

shall be removed within lead of 50 Mt. as directed by the Engineer-in-charge.

7. The trenches shall be vertically excavated and bottom shall be dressed as per required gradient. The

extra excavation for joints shall be done without any extra cost.

8. The contractor have to provide night watchman, fencing, site rails and crossing by plank etc. without

any extra cost.

9. Using the excavated stuff of road surface shall rectify the road surface broken for excavation.

10. Surplus excavated stuff has to be removed and disposed as directed outside town limit.

11. Engineer shall take the decision regarding classification of strata in charge and his decision shall be

final and binding to the contractor.

12. Payment shall be made on Cmt. Basis.

Providing & laying Brick Bats Cement Concrete 1:5:10 (1Cement 5Coarse sand 10graded Brick bats 40 mm

Nominal Size) and Using Complete excluding cost of form work including curing comp. etc excluding cost of

form work in foundation and plinth.

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1.The cement, sand and metal of 40 mm size shall be in proportion of (1:5:10). Contractor should

bring the cement from open market. The cement shall be stacked in dry place without extra cost. The

cement shall be having ISI mark; standard made ordinary portland cement and it shall be protected

from damp without any extra cost etc. as directed by the Engineer in charge.

2.The sand shall be free from dust and other injurious substances and shall be approved by Engineer

in charge. The sand shall be cleans and washed if necessary before being used. The Brick bats shall be

hard. The Brick bats shall be got approved by Engineer in charge first and than shall be used for the

work. It shall be free from impurities before being used for the work. It shall be free from impurities

and shall be screened & washed if found necessary.

3.The concrete shall be thoroughly mixed in concrete mixture machine. The concrete shall be placed

and not thrown from height. The concrete shall be used within (20min )twenty minutes from the time

of mixing. The concrete shall be properly rammed, watered and consolidation.

1. The rate includes the dewatering by means of pumping and bailing out of

water if necessary.

2. Payment shall be made per cmt. basis on work done.

Brick work using common burnt clay building bricks having crushing strength not less than 35 Kg/cm2 in

foundation and plinth in cement mortar 1:6 (1 cement 6fine sand) (A) Conventional

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

in P.W.D. Hand Book Vol. I & II.

2. The bricks shall be uniform in color, well burnt, regular in shape, free from cracks, ships lump or any

kind of impurities. The bricks shall not be used without socking by immersion in water it shall be of

3. The brick work shall be done in cement mortar consisting one part of approved quality ISI Mark,

ordinary portland cement to size part of plain, coarsest sand as specified in Schedule-B shall be of

approved quality. The sand shall be course angular and free from foreign materials.

4. The proportion mentioned in Schedule-B indicate first figure is for cement, Second figure is for sand

& the ingredient shall be measured by volume according to the Schedule-B.

5. The mortar shall be mixed on water tight platform in dry condition thoroughly, required quantity of

water shall be added to get workable mixture and shall be used within half an hour after it is mixed.

6. The bricks shall be laid after well socked in water from upward so as to form the key in masonary. All

the joints shall be thoroughly filled with cement mortar joint of brick masonary shall not be exceeded

7. The use of bricks lesser than half bricks shall be minimized. The joint shall be properly racked out up

to 20 mm depth.

8. The progress of masonry works shall be in uniform height not exceeding more than one meter a day

work. The work shall be carried out in best workmanship like manner.

9. Masonry shall have to be in plumb line and level.

10. The Masonry shall be kept constantly wet during execution and whole work shall be curred for seven

11. The rate includes the cost of masonry scaffolding T & P articles etc. complete.

12. The payment shall be made on Cmt. Basis as per Schedule-B.

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Filling available excavated earth (Excluding rock) in trenches plinth. sides of foundation etc in layers not

exceeding 20 cm in depth consolidating each deposited layer by ramming and watering etc. complete.

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

in P.W.D. hand book vol- I & II.

2. The filling shall be properly the rate including necessary watering, consolidation, etc. comp. As

directed. The extra earth if required shall have to be brought by the contractor from out side within a

lead of 50 mt. without any extra cost and the surplus earth shall be removed and disposed off as.

3. The refilling work shall be carried out with sufficient watering, ramming and without effecting and

damaging the structure of pipeline.

4. Payment shall be made per Cmt. of work done.

Brick work using common burnt clay building brick having crushing strength not less than 35 Kg/ Sq. cm in

foundation and plinth in cement mortar 1:6 find sand for brick in super structure above plinth level up to

floor two level (A) Conventional

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

in P.W.D. Hand Book Vol. II & I.

2. The bricks shall be uniform in color, well burnt, regular in shape, free from cracks, ships lump or any

kind of impurities. The bricks shall not be used without socking by immersion in water it shall be of

3. The bricks work shall be done in cement mortar consisting one part of approved quality ISI Mark,

ordinary port land cement to size part of plain, coarsest sand as specified in Schedule-B shall be of

approved quality. The sand shall be course angular and free from foreign materials.

4. The proportion mentioned in Schedule-B indicate first figure is for cement, figure is for sand & the

ingredient shall be measured by volume according to the Schedule-B.

5. The mortar shall be mixed on water tight plat form in dry condition thoroughly, required quantity of

water shall be added to get workable mixture and shall be used within half an hour after it is mixed.

6. The bricks shall be laid after well socked in water from upward so as to form the key in masonry. All

the joints shall be thoroughly filled with cement mortar joint of brick masonry shall not be exceeded

7. The use of bricks lesser than half bricks shall be minimized. The joint shall be properly racked out up

to 20 mm depth.

8. The progress of masonry works shall be in uniform height not exceeding more than one meter a day

work. The work shall be carried out in best workman ship like manner.

9. Masonry shall have to be in plumb line and level.

10. The Masonry shall be kept constantly wet during execution and whole work shall be curried for seven

11. The rate includes the cost of masonry scaffolding T & P articles etc. complete.

12. The payment shall be made on Cmt. Basis as per Schedule-B.

Steel work Welded in built up sections. frame work including cutting hosting fixing in position and applying

priming coat of red lead paint for door, window & cupboard.

1. The iron frame a door shall be fabricated from M.S. channel angle & flats as per instruction of

engineer in charge.

2. The shutter shall be fixed M.S. sheet including welding etc. comp.

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3. The door & windows shall be fabricated as per instruction of engineer in charge.

4. Necessary cutting welding etc. shall be done by the contractor.

5. The prime coat shall be applied red, oxide.

6. The hold fast shall be fixed on frame actual.

7. The payment shall be made weight basis.

Painting two coats on new steel and other metal Surfaces with enamal paint brushing to given even shade

including clearing the surface of all dirt. dust or other foreign matter. (Excluding Primer coat Red lead)

1) The door & window shall be clean by flushing to remove dirt & dust.

2) The coats of synthetic enamel paint shall be applied.

3) Payment shall be made on smt. Basis.

Providing and laying ordinary cement concrete 1:2:4 (1 cement : 2 coarse sand : 4 graded stone aggregates

20 mm nominal size) exposed work with curing etc. complete including the cost of form work but

excluding the cost of Reinforcement of RCC work in (A) Flat Slab, (B) Lintels, (C) Chajja-door (D) Chajja

1. The work shall be carried out as per the description of the item and as per specification laid from in

P.W.D. hand book vol-I & II.

2. The proportion of the concrete shall be one part of cement two parts of sand and four parts of kapachi

3. The sand shell be course angular in shape and free from any impurities or foreign materials dirt etc.

4. kapachi shall be brick trap stone it shall be hard angular free from any impurities such as dirt, dust or

other foreign materials, the size.

5. The cement shall be of approved quality.

6. Potable water shall be added in required quantity to achieve workability of concrete. The fixing shall

be done thoroughly.

7. The necessary centering shall have to be provided by the contractor without any extra cost, incl. tools

and plants required for work.

8. The work shall be kept constantly wet during the execution and whole work shall be cured for 21days.

9. The work shall be carried out in such a way so to get the smooth surface without any finishing if

required shall have to be done by the contractor at his own cost.

10. The payment shall be made on Cmt. basis.

Providing TMT bar reinforcement for RCC work including bending, binding and placing in position complete

up to floor two level.

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1. The TMT steel shall be supplied by contractor and shall be got tested by contractor in any Government

laboratory and test certificate shall be produced before placing in position steel shall be free from

greasy substances. All scaffolding arrangement and binding wire etc. shall be provided and work shall

be done as per standard practice. The rate includes providing of TMT bar bending and binding wire as

per requirement placing reinforcement at required height, stage and levels.

2. Payment shall be made as per Kg. basis as per Schedule-B

Providing and laying cement concrete flooring 1:2:4 (1cement 2coarse sand 4 graded stone aggregate

mm nominal size) laid in one layer finished with a floating coat of neat cement (40 mm thick)

The item shall be carried out as per the description of item and specification laid down in P.W.D. Hand Book

The specification of materials for cement concrete will be as per item No-3 of this tender. The work shall be

carried out as per instruction of Engineer in Charge The thickness of flooring lining shall be 40 mm etc.

Curing shall be started on the next day after finishing The rate shall be on square meter of the flooring of

specified thickness as per Schedule-B incl. cost of bedding brick bat cement concrete.

The payment shall be made on sq. mt. basis

Providing 15 mm thick cement plaster in single coat on fair side brick/concrete wall for interior plastering

up to floor two level finished even and smooth in cement mortar (1:3) (1 cement : 3 sand)

1. The sand shall be washed before use if necessary.

2. The mortar shall be prepared on watertight platform and shall be used within half an hour after

3. Cement mortar shall consist of one part of cement to three parts of clean coarse river sand free from

dust and other impurities.

4. The joints shall be racked up to about 20mm depth.

5. Surface to be plastered shall be cleaned properly with a brush and wetted before plaster is applied.

6. Plaster shall be finished in neeru of cement as per instruction of Engineer-in-charge.

7. Payment shall be made per Sqm. basis.

White washing with lime on wall surfaces (Two coats) to given an even shade including thoroughly

brooming the surface to remove all dirt. dust, mortar drops and other foreign matter.

1. The white wash or color work shall be done in the coats as per instruction of engineer in

2. Before applying white wash all dust, shall be removed by brushing to all surface.

3. The work shall be done as per instruction of engineer in charge.

4. The payment shall be made in sqmt. Basis.

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Providing and fixing AC Soil down take pipe with necessary bends etc. complete 75 mm dia

1.The rain water pipe of 1.2 mtr length shall be provided by the contractor shall be got approved

2.The rain water pipe shall be fixed as per direction of Engineer In Charge.

3.The dia of pipe shall be 75 mm dia and length 1.20 mtr prepared from A.C pipe of standard quality.

4.Payment shall be made per Rmt. of work done.

ITEM NO :: 12 ::

Chlorine Nutrilizition Pit

Agency Have follow below Specification for Constructing Neutralization pit for Chlorine Cylinder

Demolition including stacking of serviceable materials and disposal of unserviceable

materials with all lead and lift (i) RCC work

1. Scope of Work

 Dismantling/Demolition: Complete removal of RCC elements (slabs, beams, columns, etc.) using

manual or mechanical means.

 Material Recovery: Segregation of serviceable materials (like steel reinforcement) for reuse or

 Waste Management: Disposal of unserviceable materials (debris/malba) to designated municipal

dumping grounds.

 Logistics: Inclusion of all leads (horizontal distance) and lifts (vertical height) required for material

2. Execution Methodology

 Sequence: Demolition must proceed from top to bottom. Beams and slabs are typically removed

before columns to prevent structural collapse.

o Manual: Using handheld tools like hammers and chisels for small-scale or precision work.

o Mechanical: Utilizing pneumatic breakers, excavators, or hydraulic crushers for larger

 Reinforcement Cutting: Steel bars must be carefully cut and separated from the concrete. Extra

payment is often made for straightening and cleaning these bars.

3. Stacking & Disposal

 Serviceable Materials: Steel reinforcement and any reusable concrete components must be stacked

neatly in designated areas within the site.

 Unserviceable Materials: Debris must be loaded and transported to an approved municipal dumping

 Site Condition: The area must be left clean and leveled after the demolition is complete.

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4. Safety & Precautions

 Hazard Assessment: Survey adjoining structures for potential damage before starting.

 Utility Protection: Ensure water, electrical, and gas lines are disconnected or safely bypassed.

 Public Safety: Install warning signs and protective barriers to prevent unauthorized entry to the

demolition zone.

5. Mode of Measurement

 The work is typically measured in Cubic Metres (Cum) of the RCC volume demolished

Excavation for foundation upto 1.5 mt.depth including sorting out and stacking useful

material and disposing of the excavated stuff up to 50 mt.lead. (Loose or Soft Soil)

The excavation shall be done in all sorts of soil including soil, soft murrum and soft rock shall be done to the

exact width, length & depth as shown in the drawing or as directed by the Executive Engineer.

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)

or deeper Then contractor shall excavate the trench accordingly but no extra payment for such wider or

deeper excavation shall be made.

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.

No excavated stuff shall be disposed off or used for any purpose other than refilling without prior permission

of Engineer-in-charge of work

Bottom of the excavated foundation trench shall be sprinkles with water (If water table is not above

foundation level) and well rammed to obtain a reasonably firm and level bedding

Whenever collapsible types of strata are encountered pucca shoring and strutting shall be invariably claim

shall be entertained

The rate shall be paid per cum. basis.

C.C. M 100 BASE CONCRETE FOR LEVELLING COURSE:

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

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

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Providing and cast in situ C.C. in grade M-30 proportions of ingredients as per mix design by weigh

batching using granite, quartzite trap metal of size 12 mm to 20 mm and or 6 mm to 12 mm including

scaffolding centering formwork, needle vibrated consolidation, curing and hydraulic testing etc. complete

(excluding cost of reinforcement) up to 6 meter height /depth Av. G.L.for all water retaining structures.

(P.C.C. work ) Without formwork (A) For Foundation.

a). Raft (Flat)

b) Vertical wall

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.

1.0 MIXING, TRANSPORTATION AND LAYING:

the drum of the mechanical mixer while it is continuously running. After about half a minute of dry mixing

required quantity of water required for each batch on concrete mix shall be added gradually and mixing

continued for another one and a half minutes.

Mixing shall be continued till materials are uniformly distributed and uniform colour of the entireness is

obtained and each individual particles of the coarse aggregate shown complete coating of mortar containing

is proportionate amount of cement. In no case shall be mixing be done for less than 2 minutes after all in

gradients have been put in to the mixtures.

When hand mixing is permitted by the Engineer in charge for small jobs of for certain other reasons. It shall

be done on the smooth water tight plate form large enough to allow sufficient turning over the in gradients

of concrete before and after addicting water. Mixing plate form shall be so arranged that no foreign

materials get mixed with concrete. Cement in required number of bags shall be placed in a uniform layer on

tops of the measured quantity of fine and coarse aggregate, which shall also be spread in a layer of uniform

thickness on the mixing plate form.

Dry coarse and fine aggregate and cement shall then be mixed thoroughly by turning over to get a mixture of

uniform colour, specified quantity water shall then be added gradually thoroughly by turning over to get

admixture of uniform colour, specified quantity water shall then be added gradually through a rose can and

the mass turned over till a mix of required consistency is obtained. In hand mixing, quantity of cement shall

be increased by 10 % above that the specified.

Mixers, which have been out of use for more than 30 minutes shall be thoroughly cleaned before putting in a

new batch. Unless otherwise agreed to by the Engineer in charge. The first batch of concrete from the

mixture shall contain only two third of normal quantity of coarse aggregate. Mixing plant shall be thoroughly

cleaned before changing from one type of cement to another.

Fresh concrete shall be transported horizontally in ghamellas or wheel barrows. 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,

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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 7 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:-

Form Removal Shall be As per relevant IS Code or Specified in Drawings

Workability of the concrete shall be controlled by maintaining a water cement ratio that is found to give a

concrete mix which is just sufficiently wet to be placed and compacted without difficulty with the means

The maximum size of coarse aggregate shall be as large possible within the limits specified but in no case

greater than one fourth of the minimum thickness of the member, provided that the concrete can be placed

without difficulty so as surround all reinforcement thoroughly and to fill the corners of the form.

For reinforced concrete work coarse aggregate having a nominal size of 20mm are generally considered

For heavily reinforced concrete members as in the case of ribs of main beams, the nominal maximum size of

coarse aggregate should usually be restricted to 50mm less than the minimum clear distance between the

main bars. Or 5mm less than the minimum cover to the reinforcement whichever is smaller.

Where the reinforcement is widely spaced as in solid slabs, laminations of size of the aggregate may be so

import, the nominal maximum size may sometimes to be as great as or greeted than the minimum cover.

Ad-mixture may be used is concrete only with approval of Engineer in charge based upon evidence that the

passage of time neither the compressive strength of concrete is reduced nor other require qualities of

concrete and steel impaired by the use of such ad-mixtures.

Supplying cutting, bending, binding and placing in position steel as per plan and design and as per ISS

including cost of steel and binding wire for reservoirs/structures only including lift up to 6 meter height or

depth below G.L. for all diameters.

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 placing in position including cost of binding wire. The bars

shall be fusion bonded and epoxy coated.

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.

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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.

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 cover.

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

MODE OF MEASUREMENT AND PAYMENT

For purpose of calculation wastage shall not be permitted, reinforcement shall be measured in length incl.

Overlaps, separately for different diameter as actually used in the work.

The rate shall be on weight basis for 1 MT of MS reinforcement. The weight of the bars shall be calculated as

per standard weight described IS-432-1960. Lift wise unit rate per MT Basis will be paid as per schedule-B.

The wire for tying and devices for supporting bars and maintaining various clearances shall not be measured

20 mm.thick cement plastering in C.M.(1:2) using water proofing compound of approved quality include,

finishing etc. complete.

(A) with Water Proofing.

The portion of mortar to be used shall be of one part of cement and two parts of clean, sharp sand. The

water proofing compound having 1 kg/bag of cement shall be mixed with the cement mortar as directed by

the in charge of the work.

Payment shall be made per sq. mt basis.

Providing and fixing Gun metal check or non-return fullway wheel valve. (C) 25mm dia.

Size: 25 mm (1 inch) nominal bore.

Body Material: Gun Metal (Grade LTB2 as per IS: 318).

Valve Type: Fullway (Gate/Globe style) with Wheel Operation for manual isolation.

Function: Non-return (Check valve) to prevent backflow in pipelines.

Pressure Rating: PN-16 or Class-1 (typically rated for 1.0 to 1.6 MPa working pressure).

End Connections: Screwed female threads (BSP/Parallel as per IS: 554).

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Testing: Body tested to ~2.4 MPa Hyd. and Seat tested to ~1.6 MPa Hyd.

Standard: Conforms to IS: 778 or equivalent international standards

ITEM NO :: 13 ::

Providing and fixing heavy-duty (5 mm to 8 mm thick) laminated vinyl print mounted on rigid

hard board/PVC foam board including high-resolution printing, lamination, edge finishing

and proper installation, complete as directed.

Materials and Components

 Base Substrate (Rigid Board):

o Material: High-density Rigid PVC Foam Board (Sunboard) or Aluminum Composite Panel

(ACP) as specified by the EIC.

o Thickness: Minimum 5 mm to 8 mm (as per item description).

o Density: Must be uniform with a smooth surface to prevent "bubbling" of the vinyl.

o Type: Premium grade, self-adhesive Monomeric or Polymeric PVC vinyl.

o Finish: High-opacity white base to ensure color accuracy.

o Type: Cold pressure-sensitive lamination.

o Finish: Matte or Gloss (Matte is typically preferred for readability under artificial lighting).

o Function: UV protection and scratch resistance.

2. Printing Standards

 Resolution: High-resolution digital printing with a minimum of 1200 DPI.

 Ink Type: Eco-solvent or UV-curable inks. Inks must be weather-resistant and fade-resistant for at

least 3 years in outdoor conditions.

 Color Accuracy: Printing must match the approved digital proof within \pm 5\% color variation.

3. Fabrication & Finishing

 Edge Treatment: Boards must be machine-cut (CNC or manual straight-edge) to ensure perfectly

square corners and smooth edges. No burrs or rough plastic shavings should be visible.

 Lamination Coverage: The lamination film must extend to the very edge of the vinyl to prevent

peeling or moisture ingress at the seams.

 Mounting Prep: For wall-mounted boards, corners should be slightly rounded (radial cut) to prevent

injury or snagging.

4. Installation Requirements

 Surface Prep: The mounting surface (wall, pillar, or metal frame) must be cleaned of dust and grease.

 Fixing Methods:

o Adhesive: Industrial-grade double-sided foam tape (e.g., 3M VHB) covering at least 25% of

the rear surface area.

o Mechanical: Stainless Steel (SS) screws with decorative chrome-plated caps or "spacer" studs

if the board is to be offset from the wall.

 Alignment: Boards must be installed perfectly level using a spirit level, with a vertical/horizontal

tolerance of \pm 2\text{mm} .

5. Quality Inspection (QA/QC)

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 Adhesion: No visible air bubbles, wrinkles, or silvering (trapped air in lamination).

 Rigidity: The board must not warp or bow after installation.

 Legibility: Text and graphics must be sharp; no pixelation or "banding" lines from the printer are

Summary Table for EIC Approval

Property Requirement

Substrate Thickness 5 mm to 8 mm

Print Resolution 1200 DPI Minimum

Ink Grade Eco-Solvent / UV Resistant

Lamination Matte/Gloss Cold Laminate

Mounting 3M VHB Tape / SS Screws with Caps

ITEM NO ::14 ::

Painting Numbers or name on Acrylic plate as Directed by Engineer in Charge.

1. Material Requirements

 Substrate: High-impact clear or opaque acrylic (PMMA) sheets, UV-stabilized, with a minimum

thickness of 3mm (or as specified by EIC).

 Paint Type: * Primary: High-grade Acrylic Enamel or Two-Component Polyurethane (2K) paint.

o Alternative: Industrial-grade vinyl-safe inks or UV-curable inks if using digital printing.

 Primer: A specialized plastic-adhesion promoter or primer specifically formulated for PMMA to

prevent "crazing" (fine cracking).

2. Surface Preparation

 Cleaning: The surface must be free of dust, oils, and static. Use a 50/50 mix of Isopropyl Alcohol (IPA)

and water. Do not use high-strength thinners or acetone, as they will melt/cloud the acrylic.

 De-burring: All edges of the acrylic plate must be flame-polished or machine-sanded smooth before

painting to prevent edge-peeling.

3. Application Method

 Stencil/Masking: Numbers or names shall be applied using laser-cut vinyl stencils to ensure sharp,

crisp edges without "bleeding."

o Surface Painting: Paint is applied to the front. Requires a protective clear coat to prevent

o Sub-surface (Reverse) Painting: (Recommended for durability) Paint is applied to the back of

a clear plate in reverse order. This protects the signage behind the thickness of the acrylic.

 Thickness: The paint film shall have a minimum dry film thickness (DFT) of 25–40 microns.

4. Dimensional & Aesthetic Standards

 Font/Style: As per project standards (typically Arial, Helvetica, or IS/BS standard block fonts).

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 Alignment: Characters must be centered horizontally and vertically within \pm 1\text{mm}

 Contrast: The color of the numbers must provide a minimum 70% contrast ratio against the

background (e.g., White on Deep Blue, Black on Yellow).

5. Performance & Curing

 Adhesion Test: The cured paint must pass a Cross-Hatch Adhesion Test (ASTM D3359) where no

square of paint is removed by adhesive tape.

 Weathering: The finished plate must be resistant to UV degradation and moisture for a period of no

less than 5 years.

 Curing Time: Plates must be allowed to "outgas" and dry for at least 24 hours at 25^\circ\text{C}

before installation.

Summary Table for Quick Reference

Feature Specification

Adhesive Base Solvent-based acrylic or Polyurethane

Finish Gloss or Semi-gloss (as per EIC)

Lettering Height Typically 25\text{mm} to 100\text{mm} (verify with EIC)

Mounting Pre-drilled holes or industrial 3M VHB tape

ITEM NO :: 15 ::

Providing and supplying caustic soda flakes to different location as directed by Engineer

. Physical and Chemical Requirements

The material shall be in the form of white, hygroscopic flakes, free from visible foreign matter and sediment.

It must comply with the following chemical composition (Technical Grade):

Characteristic Requirement (Standard)

Sodium Hydroxide (as NaOH ) 98.0% Min by mass

Sodium Carbonate (as Na_2CO_3 ) 0.5% Max by mass

Chloride (as NaCl ) 0.1% Max by mass

Sulphate (as Na_2SO_4 ) 0.1% Max by mass

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Characteristic Requirement (Standard)

Iron (as Fe ) 20 ppm Max

Matter Insoluble in Water 0.05% Max by mass

2. Packaging & Labeling

 Packaging: Must be supplied in HM-HDPE (High Molecular High-Density Polyethylene) bags with a

minimum thickness of 100 microns, or laminated PP bags with a LDPE liner.

 Bag Weight: Standard packing is 50 kg net per bag (or as specified by the EIC).

 Sealing: Bags must be heat-sealed and machine-stitched to prevent moisture ingress, as caustic soda

is highly deliquescent (absorbs water from the air).

 Marking: Each bag must be clearly stencilled with:

o Name and Grade of the product.

o Manufacturer’s name and Batch Number.

o Date of Manufacture and Expiry.

o Statutory Warning: "CORROSIVE" with the appropriate UN Class 8 hazard symbol.

3. Delivery & Transportation

 Transport: The vehicle must be dry and covered with waterproof tarpaulins.

 Unloading: The supplier is responsible for unloading at the locations designated by the Engineer-in-

 Storage at Site: If temporary storage is required, bags must be kept on wooden pallets in a cool, dry,

well-ventilated area, away from acids and water sources.

4. Quality Assurance & Inspection

 Test Certificate: Every batch must be accompanied by a Manufacturer’s Test Certificate (MTC)

confirming the purity levels.

5. Safety & Documentation

 MSDS: A Material Safety Data Sheet (MSDS) must be provided with the first delivery to each location.

 PPE: Personnel involved in unloading and handling must be equipped with appropriate PPE (Rubber

gloves, safety goggles, and alkali-

Signature of Contractor EXECUTIVE ENGINEER

PUBLIC HEALTH WORKS DIVISION

DEPUTY EXECUTIVE ENGINEER

P.H.SANITARY UNIT

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