CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.0 C.A.NO.03/CIDCO/EE(PNL-II)/2012-13 CITY & INDUSTRIAL DEVELOPMENT CORPORATION OF MAHARASHTRA LIMITED Name of Work : Integrated infrastructure development of Roads, Footpath, S.W. Drain, Water Supply & Sewerage etc. for 12.5% Scheme in Sector – 2A at Karanjade, Panvel. C. A. No.03/CIDCO/EE(PNL-II)/2012-13 Due on : 09/04/2013 to 12/04/2013 on website cidco.maharashtra.etenders.in Price : ` 15,000/- (Rupees Fifteen Thousand only) (Non-Refundable) :OFFICE : THE CHIEF ENGINEER (SOUTH) CIDCO OF MAHARASHTRA LIMITED, 3 RD FLOOR, CIDCO BHAVAN, CBD-BELAPUR, NAVI MUMBAI.
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CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.0
C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
CITY & INDUSTRIAL DEVELOPMENT CORPORATION OF
MAHARASHTRA LIMITED
Name of Work : Integrated infrastructure development of Roads, Footpath,
S.W. Drain, Water Supply & Sewerage etc. for 12.5%
1) Submission of original Demand Draft towards cost of tender document, original EMD documents (Demand Draft / Bank Guarantee) and undertaking for submission of tender on 10.04.2013 during office
hours in the office of Executive Engineer (PNL-II), CIDCO Ltd., 1st Floor, CIDCO Nodal Office, Sector –
1(S), New Panvel (East), Navi Mumbai.
2) Online queries shall be uploaded on email ID [email protected] and reply to queries will be given on
as per time mentioned in the tendering programme.
3) Tenderer may attend financial bid opening as mentioned above. No separate intimation will be given
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5%Scheme in Sector – 2A at Karanjade, Panvel.
for Integrated infrastructure development of Roads, Footpath, S.W.
Drain, Water Supply & Sewerage etc. for 12.5% Scheme in Sector –
2A at Karanjade, Panvel at a total cost which is quoted in the financial
bid on-line at the rate contained in the aforesaid Schedule of rates and
quantities (Schedule - A) including adding to percentage the rate or
deducting the percentage therefrom in case of percentage tender.
2) I/We agree to execute this work at the above stated offer in accordance
with design, drawings, specifications, instructions/directions, special
conditions of contract & general conditions of contract supplied by
CIDCO which I/We have read carefully and agree to abide by such
conditions.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.19C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
3) I/We agree to keep this tender offer open and available to you for
acceptance for a period of 120 (One Hundred Twenty) days from the last
date appointed by CIDCO for submission of tender and further agree not
to revoke the tender or vary its terms and conditions. I/We agree to the
Employer that if I/we revoke the tender or vary its conditions at any time
during such period, the earnest money deposited by us in cash or by way
of bank guarantee shall stand forfeited to you without prejudice to
Employers other rights and remedies.
4) I/We have satisfied myself/ourselves as to the location of the site and
working conditions, examined the requirements of CIDCO, and have
obtained all the information necessary for the successful timely
completion of the work.
5) I/We bind myself/ourselves to deposit the Contract Deposit by way of cash
or as per CIDCO rules, as prescribed in Clause 10.1.1 of General
Conditions of Contract and/or special conditions of contract within 15
days after receiving your notice that the contract has been awarded to
me/us, failing which I/We shall have no objection to the forfeiture of the
earnest money in full, or also the said earnest money shall be retained by
the Employer towards the Performance Security as specified in the
conditions. I/We further bind myself/ourselves to execute the contract
document and to commence work within stipulated period as mentioned in
General Conditions of Contract, failing which I/We agree to the Employer
forfeiting the earnest money and Performance Security. The said
Employer shall also be at liberty to cancel the notice of acceptance of
tender if I/We fail to deposit the Performance Security as specified or to
execute an agreement or to start work as stipulated in the tender
documents.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.20C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
6) I/We hereby pay the Earnest Money of ` ____________ in the form of
Demand Draft / Bank Guarantee No. _____________________ issued by
____________________________ for the said amount is attached.
7) I/We understand that you are not bound to accept the lowest tender or
bound to assign any reason for rejecting our tender.
8) I/We agree that the CIDCO shall without prejudice to any other right or
remedy, be at liberty to forfeit the said earnest money as per Clause No.3.8
of Notice of Tender & Instructions to Tenderers.
Yours faithfully,
(Signature of Tenderer with seal of the firm )*
Signature of Witness
Date :
Name : ______________________
Address :_____________________
Occupation: _________________
* Power of attorney must be enclosed in case the tender is signed by the
authorized nominees.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.21C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
SPECIAL CONDITIONS OF CONTRACT
1.0 GENERAL
The special conditions of contract are to be read in conjunction with
General conditions of contract. If there are any variations or
discrepancies or conflicting provision, the provisions in Special
Conditions shall take precedence over the provisions in the General
Conditions of contract.
2.0 SCOPE OF WORK
The tender is for the work of “Integrated infrastructure
development of Roads, Footpath, S.W. Drain, Water Supply &
Sewerage etc. for 12.5% Scheme in Sector – 2A at Karanjade,
Panvel”. The work to be carried out under the contract shall except as
otherwise provided in this conditions include all labour, material, tools,
plants, equipment & transport which may be required in preparation
and completion of the works.
The description given in the schedule of works/ items/quantities, and
the Bills of Quantities shall, unless otherwise stated, be held to include
waste on materials, carriage & cartage carrying in, return of empties,
hoisting, setting, fitting & fixing in position and all other labour
necessary in & for the full and entire execution & completion as
aforesaid in accordance with good practice & recognized principles.
2.1 The scope of work as described in detailed in schedule “A”. Items of
work to be executed are described in detail to enable the tenderer to
work out rate of each element.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.22C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
2.2 The exact methodology and quality / quantity audit of various items
under Schedule “A” and parts shall be incorporated in the Q.A.M. and
such shall be based on / referred as per the approved Q.A.M. of
CIDCO Limited Engineering Department (2009) and further approved
by Engineer.
2.3 The various items under Schedule “A” will be comprehensively
undertaken as directed by Engineer and laid out programme in the
Quality Assurance Manual (QAM).
3.0 FIELD LABORATORY
The contractor shall establish a Field Laboratory for the various field
tests for items like concrete cubes, cement aggregates, sand, bitumen &
bitumen products, soil, field density and for similar items as directed
by the Engineer. A site laboratory of approx. 3.0 m. x 4.0 m. area with
platform etc. shall be constructed as directed by the Engineer. A
contractor shall appoint experienced Laboratory Technician to carryout
various tests at site.
The laboratory must have the following equipments :-
A Slump Cone 1 No.B Cube Moulds for concrete 18 Nos.C Cube Testing Machine (150 Tonnes capacity) –
electrically operated1 No.
D Weigh Balance (2 kg., 5 kg., 20 kg. capacity) 2 Nos.E IS Sieves (For Coarse & Fine Aggregates) murum 1 Set (Each)F Glass measuring cylinders 3 Nos.G Moisture Meter 1 No.H Field density test equipment with sand pouring
2.1 Engineer’s Duties & Authority 6 2.2 Engineer’s Representative 7 2.3 Engineer’s Authority to Delegate 7 2.4 Appointment of Assistants 7 2.5 Instructions in Writing 8 2.6 Engineer to Act Impartially 8
Assignment & Subcontracting
3.1 Assignment of contract 9 4.1 Subcontracting 9 4.2 Assignment of Subcontractor’s Obligations 9
Contract Documents
5.1 Language(s) & Law 10 5.2 Priority of Contract Documents 10 6.1 Custody & Supply of Drawings and Documents 10 6.2 One copy of Drawings to be kept on Site 11 6.3 Disruption of Progress 11 6.4 Delays and cost of delay of drawings 11 6.5 Failure by Contractor to submit Drawings 11 7.1 Supplementary Drawings & Instructions 12 7.2 Permanent Works Designed by Contractor 12 7.3 Responsibility Unaffected by Approval 12
General Obligations
8.1 Contractor’s General Responsibilities 12 8.2 Site Operations and Methods of Construction 13 8.3 Contractor's Representative 13 8.4 Temporary office for the Engineer 14 8.5 Changes in Constitution 14 9.1 Contract Agreement 15 10.1 Performance Security 15 10.2 Period of Validity of Performance Security 16 10.3 Claims under Performance Security 16 11.1 Inspection of site 16 12.1 Sufficiency of Tender 17 12.2 Not foreseeable physical obstructions or conditions 18
13.1 Work to be in Accordance with Contract
18
C.A. No.: Sl. Page No.
Clause No. CONTENTS Page No.
14.1 Programme to be submitted 18 14.2 Revised Programme 19 14.3 Cash flow Estimate to be submitted 19 14.4 Contractor not relieved of Duties or Responsibilities 19 14.5 Early Warning 19 15.1 Contractor’s Superintendence 19 15.2 Use of Corporation’s land 20 15.3 Supply of Water and Power 21 16.1 Contractor’s Employees 21 16.2 Engineer at Liberty to Object 21 17.1 Setting Out 21 18.1 Boreholes & Exploratory Excavation 22 19.1 Safety, Security & Protection of the Environment 22 19.2 Employer’s Responsibilities 23 20.1 Care of Works 23 20.2 Responsibility to Rectify Loss or Damage 24
20.3 Loss or Damage due to Employer’s Risks 24 20.4 Employer’s Risks 25 21.1 Insurance of Works & Contractor’s Equipment 25
21.2 Scope of Cover 26 21.3 Responsibility of Amounts not Recovered 26 21.4 Exclusions 26 22.1 Damage to Persons & Property 27 22.2 Exceptions 27 22.3 Indemnity by Employer 28 23.1 Third Party Insurance (including Employer’s Property) 28 23.2 Minimum amount of Insurance 28 23.3 Cross Liabilities 28 23.4 Insurance Policy 28 24.1 Accident or Injury to Workmen 28 24.2 Insurance Against Accident to Workmen 29 25.1 Evidence and Terms of Insurance 29 25.2 Adequacy of Insurances 30 25.3 Remedy on Contractor’s Failure to Insure 30 25.4 Compliance with Policy Conditions 30 26.1 Compliance with Statutes, Regulations 30 27.1 Fossils 31 28.1 Patent Rights 31 28.2 Royalties 31 29.1 Interference with Traffic & Adjoining Properties 32
30.1 Avoidance of damage to Roads 32 30.2 Transport of Contractor's equipment or temporary works 32 30.3 Transport of materials or plants 33 30.4 Waterborne Traffic 33 31.1 Opportunities for Other Contractors 34 31.2 Facilities for other Contractor 34 32.1 Contractor to Keep Site Clear 34 33.1 Clearance of Site on Completion
34
C.A. No.: Sl. Page No.
Clause No. CONTENTS Page No.
Labour 34.1 Engagement of Staff & Labour 35 34.2 Rates of Wages and conditions of Labour 35 34.3 Housing for Labour 36 34.4 Health and Safety 36 34.5 Measures against insect and Pest Nuisance 36 34.6 Disorderly Conduct 37 35.1 Returns of Labour & Contractor’s Equipment 37 35.2 Record of Safety and Health 37 35.3 Reporting of Accidents 37 35.4 The Apprentices Act 1961 37
Materials, Plant and Workmanship 36.1 Quality of Materials, Plant & Workmanship 38
36.2 Cost of Samples 38 36.3 Cost of Test 38 36.4 Cost of Test not Provided for 38 36.5 Engineer’s Determination where Tests not provided for 39
36.6 Use of B.I.S. specifications 39 37.1 Inspection of Operations 39 37.2 Inspection & Testing 39 37.3 Dates for Inspection & Testing 40 37.4 Rejection 40 37.5 Independent Inspection 40 38.1 Examination of work before Covering up 40 38.2 Uncovering & Making Openings 41 38.3 Materials brought to Site 41 38.4 Materials obtained from excavation 41 38.5 Use of Explosives 41 39.1 Removal of Improper Work, Materials or Plant 42 39.2 Default of Contractor in Compliance 42
Suspension and Foreclosure 40.1 Suspension of Work 42 40.4 Foreclosure of Contract in full or in part 44
Commencement and Delays 41.1 Commencement of Works 45
42.1 Possession of Site 45 42.2 Failure to Give Possession 46 42.3 Rights of Way & Facilities 46 43.1 Time for Completion 46 44.1 Extension of Time for Completion 47 44.2 Contractor to Provide Notification & Detailed Particulars 47 44.3 Interim Determination of Extension 47 45.1 Restriction on Working Hours 48 46.1 Rate of Progress 48 47.1 Compensation for Delay 49 47.2 Reduction of Compensation for Delay 50 48.1 Taking Over Certificate 51 48.2 Taking Over of Sections or Parts 51 48.3 Substantial Completion of Parts 52 48.4 Surfaces Requiring Reinstatement
52
C.A. No.: Sl. Page No.
Clause No. CONTENTS Page No.
Defects Liability
49.1 Defects Liability Period 52 49.2 Completion of Outstanding Work & Remedying Defects 52 49.3 Cost of Remedying Defects 53 49.4 Contractor’s Failure to Carry Out Instructions 53 50.1 Contractor to Search 54
Alterations, Additions and Omissions
51.1 Variations 54 51.2 Instructions for Variations 55 52.1 Valuation of Variations 55 52.2 Variations exceeding 15 percent 56
Procedure for Claims
53.1 Notice of Claims 57 53.2 Contemporary Records 57 53.3 Substantiation of Claims 57 53.4 Failure to Comply 57 53.5 Payment of Claims 58
Contractor’s Equipment, Temporary Works & Materials
54.1 Contractor’s Equipment, Temporary Works & Materials, Exclusive Use for the Works
58
54.2 Employer not Liable for Damage 58 54.3 Customs Clearance 59 54.4 Condition of Hire of Contractor’s Equipment 59 54.5 Cost for the Purpose of Clause 63 59 54.6 Incorporation of Clause in Subcontracts 59 54.7 Approval of Materials not Implied 60
Measurements
55.1 Quantities 60 56.1 Works to be Measured 60 57.1 Method of Measurement 61
Provisional Sums
58.1 Definition of “Provisional Sum” 61 58.2 Use of Provisional Sums 61 58.3 Production of Vouchers 62
Nominated Subcontractors
59.1 Definition of “Nominated Subcontractor” 62 59.2 Nominated Subcontractors; Objection to Nomination 62 59.3 Design Requirements to be Expressly Stated 63 59.4 Payments to Nominated Subcontractors 63 59.5 Certification of Payments to Nominated Subcontractors 64
Certificates and Payments
60.1 Monthly Statements 64 60.2 Monthly Payment
65
C.A. No.: Sl. Page No.
Clause No. CONTENTS Page No.
60.3 Refund of Performance Security 65 60.4 Correction of Certificates 66 60.5 Advance against Material 66 60.6 Final Statement 67 60.7 Discharge 67 60.8 Final Payment Certificates 67 60.9 Cessation of Employer’s Liability 68
60.10 Time for Payment 68 60.11 No interest for delayed payments due to disputes etc. 68 60.12 Recovery of dues from the Contractor 68 60.13 Crèche facility for the children of Construction labour 69 61.1 Approval only by Defects Liability Certificates 69 62.1 Defects Liability Certificate 70 62.2 Unfulfilled Obligations 70
Remedies
63.1 Default of Contractor 70 63.2 Valuation at Date of Termination 72 63.3 Payment after Termination 72 63.4 Assignment of Benefit of Agreement 72 64.1 Urgent Remedial Work 72
Special Risks
65.1 No Liability for Special Risks 73 65.2 Special Risks 73 65.3 Damage to Works by Special Risks 74 65.4 Projectile, Missile 74 65.5 Increased Costs arising from Special Risks 74 65.6 Outbreak of War 75 65.7 Removal of Contractor’s Equipment on Termination 75 65.8 Payment if Contract Terminated 75
Release from Performance
66.1 Payment in Event of Release from Performance 76
Settlement of Disputes
67.1 Settlement of Disputes
77
Notices
68.1 Notice to Contractor 81 68.2 Notice to Employer & Engineer 81 68.3 Change of Address 81
Default of Employer
69.1 Default of Employer 81 69.2 Removal of Contractor’s Equipment 82 69.3 Payment on Termination 82 69.4 Contractor’s Entitlement to Suspend Work 82 69.5 Resumption of Work
82
C.A. No.: Sl. Page No.C.A. No.: Sl. Page No.
Clause No. CONTENTS Page No.
Changes in Cost and Legislation
70.1 Price Variation Clause 83
70.2 Reimbursement of taxes and duties 91
71.1 Tax Registrations 91
ANNEXURES :
A Annexure 'A' 93 B Safety provisions 95 C Format for Taking Over Certificate 100
APPENDICES:
Appendix-I to Sub-Clause No. 67.4 102 Appendix-II to Sub-Clause No. 67.4 108
C.A. No.: Sl. Page No.
1
GENERAL CONDITIONS
Definitions and Interpretation
Definitions
1.1 In the Contract (as hereinafter defined) the following words and expressions shall
have the meanings hereby assigned to them, except where the context otherwise
requires:
(a) (i) “Employer” means the CIDCO Ltd. a Company incorporated
under the Companies Act, 1956 (The Corporation).
(ii) “Contractor” means the person whose tender has been accepted
by the Employer and the legal successors in title to such person,
but not any assignee of such person appointed without consent of
Employer.
(iii) “Subcontractor” means the person named in the Contract as a
Subcontractor for a part of the Works or any person to whom a
part of the Works has been subcontracted with the consent of the
Engineer and the legal successors in title to such person, but not
any assignee of any such person appointed without consent of
Employer.
(iv) “Engineer” means the person nominated by the Employer to act
as Engineer for the purposes of the Contract and named as such
in Annexure “A” of these Conditions.
(v) “Engineer’s Representative” means a person appointed from
time to time by the Engineer under Sub-Clause 2.2
(vi) The 'Managing Director' means the Managing Director of the
CIDCO Ltd., for the time being holding that office and also his
successors and shall include any officer authorised by him.
(vii) The 'Joint Managing Director' means the Joint Managing
Director of the CIDCO Ltd., for the time being holding that office
C.A. No.: Sl. Page No.
2
and also his successors and shall include any officer authorised by
him.
(viii) The "Chief Engineer" means Chief Engineer & General Manager
(Technical), the officer so designated in the Corporation or any
other officer who is for the time being entrusted with his functions,
duties and powers by the Managing Director and notified to the
Contractor.
(ix) The "Additional Chief Engineer" means the officer, so
designated in the Corporation or any other officer who is for the
time being entrusted with his functions, duties and powers by the
Managing Director and notified to the Contractor.
(x) The "Chief Accounts Officer" means the officer, so designated in
the Corporation or any other officer who is for the time being
entrusted with his functions, duties and powers by the Managing
Director and notified to the Contractor.
(xi) The 'Superintending Engineer ' means the officer, so designated
in the Corporation or any other officer who is for the time being
entrusted with his functions, duties and powers by the Managing
Director and notified to the Contractor.
(xii) The 'Executive Engineer ' means the officer, so designated in the
Corporation or any other officer who is for the time being entrusted
with his functions, duties and powers by the Managing Director
and notified to the Contractor.
(xiii) The "Inspecting Officers" shall mean the Chief Engineer,
Additional Chief Engineer, Superintending Engineer or any other
officer or person for the time being exercising their functions,
duties and powers.
(b) (i) “Contract’ means these Conditions, the Specifications, the
Drawings, the Bill of Quantities, the Tender, the Letter of
Acceptance, the Work order, the Contract Agreement (if
completed) and such further documents as may be expressly
incorporated in the Letter of Acceptance or Contract Agreement (if
completed).
C.A. No.: Sl. Page No.
3
(ii) “Specification” means the specification of the Works included in
the Contract and any modification thereof or addition thereto made
under Clause 51 or submitted by the Contractor and approved by
the Engineer.
(iii) “Drawings” means all drawings, calculations and technical
information of a like nature provided by the Engineer to the
Contractor under the Contract and all drawings, calculations,
samples, patterns, models, operation and maintenance manuals
and other technical information of a like nature submitted by the
Contractor and approved by the Engineer.
(iv) “Bill of Quantities” means the priced and completed Bill of
quantities forming part of the Tender.
(v) "Tender" means the Contractor's priced offer to the Employer for the
execution and completion of the Works and the remedying of any
defects therein in accordance with the provisions of the Contract,
as accepted by the Letter of Acceptance.
(vi) “Letter of Acceptance” means the formal acceptance by the
Employer of the Tender.
(vii) “Contract Agreement” means the contract agreement (if any)
referred to in Sub-Clause 9.1.
(viii) “Work Order” means the written communication of the Engineer
ordering starting of the Work and specifying Commencement date
and date of completion.
(c) (i) “Commencement Date” means the date upon which the
Contractor receives the notice to commence, issued by the
Engineer pursuant to clause 41.
(ii) “Time for Completion” means the time for completing the
execution of and passing the Test on Completion of the Works or
any Section or part thereof as stated in the Contract (or as
extended under Clause 44) calculated from the Commencement
Date.
(d) (i) “Tests on Completion” means the tests specified in the contract
or otherwise agreed by the Engineer and the Contractor which are
C.A. No.: Sl. Page No.
4
to be made by the Contractor before the Works or any section or
part thereof are taken over by the Employer.
(ii) “Taking over Certificate” means a certificate issued pursuant to
clause 48.
(e) (i) “Contract Price” means the sum stated in the Letter of
Acceptance as payable to the Contractor for the execution and
completion of the Works and the remedying of any defects therein
in accordance with the provisions of the Contract.
(ii) “Performance Security” means the aggregate of all monies
retained by the Employer pursuant to Sub-Clause 10.1.
(iii) “Interim Payment Certificate” means the certificate of payment
issued by the Engineer other than the Final Payment Certificate.
(iv) “Final Payment Certificate” means the certificate of payment
issued by the Engineer pursuant to Sub-Clause 60.8.
(f) (i) “Works ” means the Permanent Works and the Temporary Works
or either of them as appropriate.
(ii) “Permanent Works” means the permanent Works to be executed
(including Plant) in accordance with the Contract.
(iii) “Temporary Works” means all temporary Works of every kind
(other than Contractor’s Equipment) required in or about the
execution and completion of the Works and the remedying of any
defects therein.
(iv) “Plant” means machinery, apparatus and the like intended to form
or forming part of the Permanent Works.
(v) “Contractor’s Equipment” means all appliances and things of
whatsoever nature (other than Temporary Works ) required for the
execution and completion of the Works and the remedying of any
defects therein, but does not include Plant, materials or other
things intended to form or forming part of the Permanent Works .
(vi) “Section” means a part of the Works specifically identified in the
Contract as a Section.
C.A. No.: Sl. Page No.
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(vii) “Site” means the places provided by the Employer where the
Works are to be executed and any other places as may be
specifically designated in the Contract as forming part of the Site.
(g) (i) “Cost” means all expenditure properly incurred or to be incurred,
whether on or off the Site, including overhead and other charges
properly allocable thereto but does not include any allowance for
profit.
(ii) “Day” means calendar day.
(iii) “Foreign currency” means a currency of a country other than that
in which the Works are to be located.
(iv) “Writing” means any hand-written, type-written, or printed
communication, including telex, cable and facsimile transmission.
Headings and Marginal Notes
1.2 The headings and marginal notes in these Conditions shall not be deemed part
thereof or be taken into consideration in the interpretation or construction thereof
or of the Contract.
Interpretation
1.3 Words importing persons or parties shall include firms and corporations and any
organization having legal capacity.
Singular and Plural
1.4 Words importing the singular only also include the plural and vice versa where
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.175C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Environmental Cess or any other duties on materials obtained for the
works and any duties in respect of patent rights. Cess as per BPMC
Act and its amendments.
e) Supervision : Competent supervision of the work.
f) Labour : Reasonable terms and conditions of employment, liability to
pay compensation, wages as per statutory enactments, temporary
accommodation, sanitation etc. compliance with Contract Labour Act.
g) Water: Provision of all water required including temporary plumbing
and connection.
h) Temporary Workshops, Stores, Office, Labour Camps etc. : Provisions
of such structures required for efficient execution of the works and
removing and cleaning up site on completion of works.
i) Precaution against risk : Precautions to prevent loss or damage from all
or any risk, insurance of sheds or any temporary accommodation
provided by CIDCO, watching & lighting, provisions pertaining to the
General Conditions of Contract.
j) Notices, Fees etc. : Compliance with statutory provisions of
regulations and/or bye-laws of any local authority including NMMC
and/or any public service company or authority affected by the works.
k) Setting the works including all apparatus required.
l) Site Drainage: Removal of all water that may accumulate due to
springs, sub soil water, flood/tides and any other causes on the site
during the progress of the work.
m) Execution of work in workmanlike manner, facilities for inspection
etc.
n) Rectification of Bad Work : Rectification and/or removal and
reconstruction of any work which (as decided by the Engineer) has
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.176C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
been executed with unsound or imperfect materials or unskilled
workmanship or of a quality inferior to that contracted for, whether
during construction or reconstruction prior to the expiry of the Defect
Liability period.
o) Responsibility for damage and loss of all construction materials etc., at
the site until handing over to CIDCO.
p) Removal of Rubbish: Removal of rubbish and debris and cleaning of
any dirt before handing over of all completed works.
q) Clearing site and works : Removal by the Contractor off the site, of
any tools, plants and materials and removal of splashes of asphalt
leaving the whole site neat and tidy.
r) Completion: Completing the work to the satisfaction of the Engineer
on or before the date of completion.
s) Difficult position: Accessibility or otherwise to site, easy or difficult
positions in works.
t) Errors: Rectification of all errors to the satisfaction of Engineer.
u) Curved work etc. : Work of any quantity, size or shape whether level,
inclined, curved, battered etc.
v) Maker’s Instructions: Compliance with maker’s instructions in the
case of proprietary articles, factory made goods of precast items.
w) Waste: All waste, laps, seams, joints (rough or fair cuttings)
straight/raking, circular and making good.
x) Artificial Light: To include all lighting/kerosene or electric power as
the case may be when need arises for use of lighting while carrying out
works.
y) Construction of approaches to the site of work. Making arrangement
for proper access to works in the form of stairs, ladders, lifts, etc. as
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.177C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
ordered by the Engineer for proper supervision, testing and or
inspection of works.
z) All the expenses required towards testing of materials and/or works.
All expenses towards contractor’s all risk insurance policy
(B) BRIEF NOTES ON DRAFTING OF SCHEDULE OF RATES AND
QUANTITIES
2.0 The tender has been drafted on the basis of pre-priced schedule of rates and
quantities for different types of items.
2.1 All the tender items are priced as per CIDCO Schedule of rates for the year
2011-12, MJP Schedule of Rates for the year 2011-12 and Approved Rates.
2.2 The Contractors are requested to work out their own rates based on the
detailed description of Schedule ‘A’ items, the specifications and drawings
and finally arrive at the cost of the work in the appropriate place. The
contractor shall insert percentage cost over CIDCO’s cost to arrive at the
contract value for the work.
(C) TIME OF COMPLETION
3.0 The period of completion of works enumerated under Schedule ‘A’ shall be
as mentioned in Annexure ‘A’ from the date of placing the work order or date
of handing over the site whichever is earlier.
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(D) DEDUCTIONS OF INCOME TAX
4.0 Deduction of Income Tax shall be at the rates stipulated by Income Tax
authorities and the amounts shall be deducted from monthly and final
statement submitted by contractor.
(E) DEDUCTION OF CONTRACT SALES TAX / TURNOVER TAX /
WORKS CONTRACT TAX
5.0 The contractors are required to produce their registration for contract sales
tax/turnover tax/works contract tax to the department before releasing the 1st
monthly payment for the work executed by them, failing which, no payment
shall be released.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.179C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
SCHEDULE “A”
BILL OF QUANTITIES
PART – I : ROAD WORK
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
1. Demarcation of the road /channel / bridge alignment bytraversing along the existing /proposed route with onesecond theodolite. Takingangles & distance at turningpoints including transfer ofCo-ordinate from knownpoint to survey area and asdirected by Engineer &providing 5 Nos. colourpaper prints with tracing anddrawing in soft copy formatetc. complete.
1.41 9,867.00 Km. 13,912.47
2. Excavation for roadways inall types of soil, softmurum, hard murum, hardmurum with boulders, softrock in all conditions andnature, including clearing andstripping of the area, removalof vegetation, shrubs, takingspot levels, excavating torequired depth, line, level andslope, levelling and dressingand consolidating theexcavated surface,dewatering by all means upto
2584.00 180.70 Cum. 4,66,928.80
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.180C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTany extent of wateraccumulated from anysource, sorting out andstacking serviceable andunserviceable materials etc.complete includingconveying the excavatedmaterial with all lifts andupto a lead of 50 mtr & itsspreading or stacking asdirected, etc. complete.Note : All payments towardsthe royalty, fees, taxes etc.shall be borne by thecontractor.
3 a) Excavation for roadway inhard rock/ manjra rock bywedging, chiselling or linedrilling including dressing,sectioning to the requiredgrade, camber and sideslopes and conveying theexcavated material with alllifts and lead and stackingetc. complete.
Notes :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) The excavated rock shallbe Contractor’s Property.
100.00 946.45 Cum. 94,645.00
3 b) Excavation for roadwaysin hard rock upto anydepth with all lifts by open
0.00 290.70 Cum. 0.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.181C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTor controlled blastingincluding trimming andlevelling the bed, removingthe excavated materials uptoa distance of 50m beyondthe work site with all lifts,stacking the serviceablematerials in measurableheaps as directed. The itemincludes heavy dewateringusing pumps or manually,shoring and strutting andpreparing the bed forfoundation and necessaryback filling etc. complete.
Notes :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) The excavated rock shallbe Contractor’s Property.
4 a) Providing earthwork inembankment with approvedmaterials obtained fromContractors own sourceincluding all leads and lifts,laying in layers of 20 to 30cms in thickness, breakingclods, dressing to therequired lines, curves, grades,and section with watering &compacting with vibratorypower rollers etc. completewith 95% P.D.
11093.00 274.40 Cum. 30,43,919.20
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.182C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTNotes :1. All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2. The Environmental cessshall be recovered at`1/m3 of gross volumecomputed without deduc-tions as mentioned for themonthly payments / R.A.bills or final payment.
3. P.D. Tests shall be carriedout @ one test comprisingof 3 specimens averageresult per 1000 m2 area.
4. Compaction upto 95%Modified P.D. and thelaboratory soil dry densityshall be not less than 1.6g/cc. at optimum moisturecontent.
5. The gross volume of theembankment shall reducedby 5% for monthlypayments / R.A. bills and1% for final payment.
4 b) Providing earthwork inembankment with approvedmaterials obtained fromroad cutting including allleads and lifts, laying inlayers of 20 to 30 cms inthickness, breaking clods,dressing to the required lines,curves, grades, and section
775.00 185.40 Cum. 1,43,685.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.183C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTwith watering & compactingwith vibratory power rollersetc. complete with 95% P.D.
Notes :1. All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2. The Environmental cessshall be recovered at`1/m3 of gross volumecomputed without deduc-tions as mentioned for themonthly payments / R.A.bills or final payment.
3. P.D. Tests shall be carriedout @ one test comprisingof 3 specimens averageresult per 1000 m2 area.
4. Compaction upto 95%Modified P.D. and thelaboratory soil dry densityshall be not less than 1.6g/cc. at optimum moisturecontent.
5. The gross volume of theembankment shall reducedby 5% for monthlypayments / R.A. bills and1% for final payment.
4 c) Providing earthwork inembankment with approvedmaterials obtained fromContractors own sourceincluding all leads and lifts,laying in layers of 20 to 30
6454.00 275.20 Cum. 17,76,140.80
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.184C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTcms in thickness, breakingclods, dressing to therequired lines, curves, grades,and section with watering &compacting with vibratorypower rollers etc. completewith 97% M.P.D.
Notes :1. All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2. The Environmental cessshall be recovered at`1/m3 of gross volumecomputed without deduc-tions as mentioned for themonthly payments / R.A.bills or final payment.
3. P.D. Tests shall be carriedout @ one test comprisingof 3 specimens averageresult per 1000 m2 area.
4. Compaction upto 97%Modified P.D. and thelaboratory soil dry densityshall be not less than 1.75g/cc. at optimum moisturecontent.
5. The gross volume of theembankment shall reducedby 5% for monthlypayments / R.A. bills and1% for final payment.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.185C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
5. Watering and compactionof existing WBM road withvibratory roller to 95% P.D.including all necessarymaterial and labour etc.complete. The test shall beconducted to ascertain thestrength by the way ofconducting CBR test as perIS : 2720 (Part 16) at every3000 sqm. or part of it andseparate payment shall bepaid for the test.
3930.00 15.00 Sqm. 58,950.00
6. Providing & laying granularsub-base (GSB) as perclause 401 of M.O.R.T.&H(2001) specifications ofspecified grading (Table 400-1 or 400-2) in specifiedthickness in layers. The itemto include premixing thematerials in plant, transporta-tion to site, spreading inuniform layers with motorgrader on a preparedsubgrade, compacting withvibratory rollers till 98% ofthe maximum dry density (IS2720 part-8) is achieved etc.Complete. The rate includesfor tests on completion ofeach GSB layer. The strengthof each GSB layer shall beevaluated by conductingCBR (IS 2720 Part 16 & 31)or Plate load test using750mm dia. Plate, (IS 9214)
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.186C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTfor obtaining equivalent CBRvalue @ one test per 3000m2 compacted surface areaas per the Grading. The itemincludes for all necessarymaterial, labour, diversions,taxes, royalty, cess etc.complete.
a) For Grading-III of close-graded GSB material withminimum CBR value of20% to be obtained on topof the compacted layer.(Lower sub-base).
0.00 865.07 Cum. 0.00
b) For Grading-II of close-graded GSB material withminimum CBR value of25% (As per IS 9214-1979) to be obtained ontop of the compactedlayer. (Intermediate sub-base).
1291.00 869.50 Cum. 11,22,524.50
c) For Grading-I of close-graded GSB material withminimum CBR value of30% (As per IS 9214-1979) to be obtained ontop of the compactedlayer. (Upper sub-base).
1291.00 908.20 Cum. 11,72,486.20
7. Remaking of road surfaceexcavated for water supplyand sewerage line inclusiveone no. of oversize metallayer and two nos. of sizemetal layer, supplying andspreading of blindage and
0.00 430.00 Sqm. 0.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.187C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTwatering and rolling withvibro roller etc. complete.
8. Providing & laying granularbase of Wet mix macadam(WMM) as per clause 406 ofM.O.R.T.&H (2001)specifications of specifiedgrading (Table 400-11) inspecified thickness in layers.The item to includepremixing the materials inplant, transportation to site,spreading in uniform layerswith paver on a preparedsub-base, compacting withvibratory rollers till 98% ofthe maximum dry density (IS2720 Part-8) is achieved etccomplete. The rate includesfor tests on completion ofeach WMM layer. Thestrength of each WMM layershall be evaluated by Plateload test with 750 mm diaplate. (IS 9214) for obtainingequivalent CBR value @ onetest per 3000 m2 compactedsurface area as per theGrading. The item includesfor all necessary material,labour, diversions, taxes,royalty, cess etc complete.
1100.00 1,221.30 Cum. 13,43,430.00
9 a). Providing and applying lowviscosity liquid bituminousmaterial such as bitumenemulsion complying to IS :
9985.00 38.70 Sqm. 3,86,419.50
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.188C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT8887 of approved type andgrade or cut back or road tarcomplying to relevant IRC/IScode of approved type andgrade by a self propelled ortowed bitumen pressuresprayer as per clause No. 502of Specifications for road andbridge works (M.O.R.T.&H.,2001). The item includesfor preparation of the base,application of the prime coat,curing, relevant tests forquality control as enumeratedin table 900-4, diversion oftraffic, etc. complete. Therate shall include for alllabour, materials, machinery,transportation, taxes etc.complete.For low porosity surfacessuch as WMM/WBM at anapplication rate of 0.6 to0.9 kg/sqm.with kinematicviscosity of primer at 60degree ranges between 30-60 centistokes. (Priming)
9 b) Providing and applying lowviscosity liquid bituminousmaterial such as bitumenemulsion complying to IS8887 of approved type andgrade by a self propelled ortowed bitumen pressuresprayer as per clause No. 503of Specifications for road andbridge works (M.O.R.T.&H., 2001). The item includes
9985.00 15.60 Sqm. 1,55,766.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.189C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTfor preparation of the base,application of the tack coat,curing, relevant tests forquality control as enumeratedin table 900-4, diversion oftraffic, etc. complete. Therate shall include for alllabour, materials, machinery,transportation, taxes etc.complete.
For Granular surfacestreated with primer at anapplication rate of 0.25 to0.30 kg/m2.
10. Providing and constructingBituminous BoundMacadam (BBM) surface 75mm thickness includingsupplying all materialsincluding metal, bitumen etc.spreading 40 mm handbroken trap metal 9 cum per100 m2 and 20 mm trapmetal at the rate of 1.5cum/100 sqm., heating andspreading bitumen (excludingtack coat) at 250 kg./100 m2,spreading 12 mm size keyaggregate at the rate of 1.8cum/100 sqm andcompaction with vibratoryroller complete. Grade ofbitumen shall be 60/70.
On WBM/WMM surfaceincluding existing surface.Excluding tack coat.
9985.00 185.70 Sqm. 18,54,214.50
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.190C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTNote : Item also includescleaning the road surfacewith wire brush/brooms andmake it free from dust andwater before applying/spreading tack coat. Thetack coat shall be paidseparately.
11. Providing and applying lowviscosity liquid bituminousmaterial such as bitumenemulsion complying to IS8887 of approved type andgrade by a self propelled ortowed bitumen pressuresprayer as per clause No. 503of Specifications for road andbridge works (M.O.R.T.&H., 2001). The item includesfor preparation of the base,application of the tack coat,curing, relevant tests forquality control as enumeratedin table 900-4, diversion oftraffic, etc. complete. Therate shall include for alllabour, materials, machinery,transportation, taxes etc.complete.
For Normal bituminoussurface at an applicationrate of 0.20 to 0.25 kg/m2.
9985.00 13.90 Sqm. 1,38,791.50
12. Providing and laying 20 mmthick hot mix hot laid pre-mix Seal Coat (SC)
9985.00 142.65 Sqm. 14,24,360.25
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.191C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTcomposed of 11.2 mm to .09mm (type a) or 13.2 mm to.09 mm (type b) aggregateusing 60/70 grade bitumen @22kg/10 sqm as perMORT&H-512 includingsupplying all materials,heating bitumen, mixingbitumen and chips in hot mixplant, laying the seal coat bysensor paver finisherincluding compaction withvibratory roller etc. complete.The grade of bitumen shallbe 60/70. The rate isinclusive of all types oftaxes. (Excluding tack coat).
13. Disposal of surplusexcavated materials upto2.00 Km. lead and all liftsincluding loading, unloading,transporting by mechanicalor other means, stacking,levelling and spreading asdirected by Engineer etc.complete beyond initial leadof 50 metres.
1809.00 77.10 Cum. 1,39,473.90
14. Conducting Field CBR testas per IS 2720 (Part-31)1990. The item shall includenecessary cost ofmobilization, demobilizationof equipments, labour etc. atthe specified site and fortesting at minimum 3 spots.If the test results of initial 3
4.00 3,920.00 No. 15,680.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.192C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTspots deviate more than thatspecified in Table 2 of clauseNo. 3, 4, 5, 6, 4 of IRC37:2000 then additional 3specimen shall be got testedat no extra cost. The rateincludes for all necessaryancillary tests mentioned inappendix “A” of IS 2720(Part-31) viz. Particle sizeanalysis, atterberges limit,insists moisture content. Therate includes necessaryexcavation of pits at site.The test results shall besubmitted in a report formwith observation sheetgraphs, tabular form &inference if any.
15. To carry out plate load testto determine modulus of sub-grade reaction (K-value) ofunbound / semi-boundmacadam (GSB, WMM,BBM) in field as per IS CodeNo. 9214-1979. The itemincludes mobilization,demobilization of equipment,personnel, labours etc. at thespecified site and to conductone test per location. Thetest shall be conducted on75cm. dia & 25mm thickplate with stiffening plates ofsmaller size of 60, 45 & 30cm. dia and 25mm thick eachshall be used. Vertical
2.00 8,800.00 No. 17,600.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.193C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTmovement shall be measuredby three dial gauges placed at1200 preferably 4 dial gaugesplaced at 900. The load shallbe measured using 15 MTcapacity proving ring /hydraulic jack with pressuregauge duly calibrated fromtime to time. The test resultsshall be submitted in a reportform with observation sheets,graphs, tabular form &inferences if any.
Total of Part – I ` 1,33,68,927.62
Total Carried over to Summary of Schedule “A” on Sl.Pg.No.244
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.194C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
SCHEDULE “A”
BILL OF QUANTITIES
PART – II : FOOTPATH WORK
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
1. Filling in plinth and floorswith approved excavatedmaterial in 15cm to 20cmlayers including watering andcompaction complete.
485.00 43.00 Cum. 20,855.00
2. Providing & laying hardcore with 80 mm oversizetrap metal in layers of 150mm thickness includingfilling voids with rubblechips and stone grit ramming,watering etc complete.
133.00 553.25 Cum. 73,582,25
3. Providing and laying cementconcrete M-20 grade ReadyMix Concrete (RMC) usingdesign mix with minimumcement content 310 kg./cum.as per IRC Specifications andmaximum water cement ratio0.45 using maximum 25/30mm size and down trap metalfor footpath concrete withall labours, materials, plant &equipments, shutteringformwork, staging, includingtransporting, placing,
376.00 5,950.00 Cum. 22,37,200.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.195C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTvibrating with mechanicalvibrator, finishing and curingetc. complete. The item alsoincludes heavy dewatering toany extent of wateraccumulated by any sourceby using pumps or manually,providing thermacol jointswherever necessary. Thecost also includes all types oftaxes, sales tax, insurance,cess levied by local authorityetc. complete.
4. Providing PCC precastfactory made kerb stone of500x400x150 mm size in M-25 grade of concrete usingdesign mix with minimumcement content 310 Kg./cum.as per IS 456 includingfixing in PCC in M-20 grade,250 mm thick, filling thejoint with CM 1:3, pointingin CM (1:3) on exposed faceetc. complete includingpainting in two coats of oilpaint to exposed surfaces,one coat of primer andexcavation and disposal ofexcavated material, makinggood the road, curing,transporting to site, loading,unloading and stacking etc.complete. The rate isinclusive of all types oftaxes.
2159.00 561.05 Rmt. 12,11,306.95
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.196C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
5. Providing PCC precastfactory made kerb stone of500x400x150 mm size forwater entry without paintingin M-25 grade of concreteusing design mix withminimum cement content310 kg./cum. as per IS 456including fixing in PCC inM-20 grade, 250 mm thick,filling the joint with CM(1:3), pointing in CM (1:3)on exposed face etc.complete and excavation anddisposal of excavatedmaterial, making good theroad, curing, transporting tosite, loading, unloading andstacking etc. complete. Therate is inclusive of all typesof taxes.
514.00 535.05 Rmt. 2,75,015.70
6. Providing and fixing PCCpre-cast factory made watertable of 500 x 400 x 100 mmsize in M-25 grade ofconcrete using design mixwith minimum cementcontent 310 kg./cum. as per IS456 including excavation,fixing in PCC M-20, bed 75mm thick filling the joint inCM (1:3), curing, includingexcavation as required,disposal of excavated materialmaking good the road, curing,transporting to site, loading,unloading and stacking etc.
2159.00 258.25 Rmt. 5,57,561.75
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.197C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTcomplete. The rate isinclusive of all types of taxes.
7. Providing and fixing precastfactory made RCC waterentry kerb stone with slabof M-25 grade of cementconcrete using design mixwith minimum cementcontent 310 kg./cum. as perIS 456 as per IS 456 of size700x450x60 mm includingsteel reinforcement as perdrawing, transportation tosite, etc complete or asdirected by Engineer.
224.00 147.00 No. 32,928.00
8. Providing and making waterentry system with provisionfor openable covers of M-25 grade with minimumcement content 310 kg./cum.as per IS 456 to facilitateS.W. Drain cleaning as perdetailed drawing, design andas directed etc. complete.
229.00 1,686.50 Sqm. 3,86,208.50
9. Providing and fixing RCCprecast factory made RCCwater entry slab cover 75mm thick of M-25 grade ofcement concrete using designmix with minimum cementcontent 310 kg./cum. as perIS 456 including steelreinforcement as perdrawing, transportation tosite, loading, unloading and
60.00 156.80 Sqm. 9,408.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.198C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTstacking etc. complete or asdirected by Engineer. Therate is inclusive of all typesof taxes.
10. Providing & fixing precastRCC beams of size 150x150mm over SW Drain in M-25 grade of concrete usingdesign mix with minimumcement content as per IS 456as per detailed design anddrawings or as directedincluding steel centering,compaction, curing andfinishing uneven and honeycombed surface with cementmortar 1:3 of sufficientminimum thickness to give asmooth and even surfaceincluding providing & fixingsteel reinforcement @ 60Kg/M3. The rate is inclusiveof all types of taxes.
18.00 211.55 Rmt. 3,807.90
Total of Part – II ` 48,07,874.05
Total Carried over to Summary of Schedule “A” on Sl.Pg.No.244
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.199C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
SCHEDULE “A”
BILL OF QUANTITIES
PART – III : STORM WATER DRAIN WORK
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
1. Excavation for foundation toany depth in all types ofearth, soils of all types suchas sand, gravel, softmurum, hard murum withor without boulders, softrock, slush etc. for generalside grading below groundlevel (slush) in all conditionsand nature including shoringand strutting wherevernecessary includingdisposing off the surplusmaterials within 50m, beyondthe work site, stacking andspreading as directed. Theitem includes heavydewatering to any extent byusing pumps or manually,shoring, strutting andpreparing the bed forfoundation and necessaryback filling etc. complete.Note : All payments towardsthe royalty, fees, taxes etc.shall be borne by thecontractor.
3100.00 214.70 Cum. 6,65,570.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.200C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
2 a) Excavation for foundation inhard rock upto any depthwith all lifts by chisellingmanually or by mechanicalmeans such as hydraulic rockdriller including wedging,line drilling etc. includingtrimming and levelling thebed, removing the excavatedmaterials upto a distance of50m beyond the work sitewith all lifts, stacking theserviceable materials inmeasurable heaps as directed.The item includes heavydewatering to any extent byusing pumps or manually,shoring and strutting andpreparing the bed forfoundation and necessaryback filling etc. complete.Notes :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) The excavated rock shallbe Contractor’s Property.
775.00 946.45 Cum. 7,33,498.75
2 b) Excavation for foundation inhard rock upto any depthwith all lifts by open orcontrolled blastingincluding trimming andlevelling the bed, removingthe excavated materials uptoa distance of 50m beyond thework site with all lifts,
155.00 287.64 Cum. 44,584.20
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.201C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTstacking the serviceablematerials in measurableheaps as directed. The itemincludes heavy dewateringusing pumps or manually,shoring and strutting andpreparing the bed forfoundation and necessaryback filling etc. complete.Notes :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) The excavated rock shallbe Contractor’s Property.
3. Providing and laying drytrap metal soling 15 cm. to20 cm. thick including handpacking with metal, rubblechips, application of requiredmurum/stone dust blindageand compaction includingwatering etc. complete withall leads, including necessaryheavy dewatering eithermechanically or manuallyetc. complete.
1755.00 775.40 Cum. 13,60,827.00
4. Providing and laying cementconcrete M-20 grade ReadyMix Concrete (RMC) usingdesign mix with minimumcement content 310 kg./cum.as per IRC specifications andmaximum water cement ratio0.45 using maximum 25/30
742.00 5,950.00 Cum. 44,14,900.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.202C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTmm size and down trap metalfor RCC work infoundation like raft,grillage, strip foundationand footings of RCCcolumn and steel stanchionsas per detailed drawing withall labours, materials, plant &equipments, shutteringformwork, staging, includingtransporting, placing,vibrating with mechanicalvibrator, finishing and curingetc. complete. The item alsoincludes heavy dewatering toany extent of wateraccumulated by any sourceby using pumps or manually.The cost also includes alltypes of taxes, sales tax,insurance, cess levied bylocal authority etc. complete.
5. Providing and casting M-30grade Ready Mix Concrete(RMC) using design mix withminimum cement content 360kg./cum. as per IRCspecifications controlledconcrete using maximum25mm/30mm size and downgraded aggregate of trap metalfor RCC work in foundationlike raft, grillage, stripfoundation and footings ofRCC column and steelstanchions etc. as per detaileddrawing, with maximumwater cement ratio of 0.40
175.00 6,327.00 Cum. 11,07,225.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.203C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT(for severe condition) asdirected, with contractorslabours, materials, plant &equipments, scaffolding,shuttering, formwork, stagingincluding transporting,placing vibrating withmechanical surface vibratorand all lifts and leads, curing,adding required dosages (asper the manufacturersrecommendations) ofapproved plasticiser asadmixtures (excluding cost ofreinforcement). The itemincludes heavy dewatering toany extent of wateraccumulated by any source byusing pumps or manually.The cost also includes alltypes of taxes, excise duty,sales tax, insurance, cesslevied by local authority etc.complete.
6. Providing and casting M-20grade Ready Mix Concrete(RMC) using design mixwith minimum cementcontent 310 kg./cum. as perIRC specifications controlledconcrete using maximum25mm/30mm size and downgraded aggregate of trapmetal for RCC verticalwalls as per detailed drawing,with maximum water cementratio of 0.45 (for severecondition) as directed, with
777.00 7,748.00 Cum. 60,20,196.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.204C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTcontractors labour, materials,plant & equipments,scaffolding, shuttering,formwork, staging includingtransporting, placingvibrating with mechanicalsurface vibrator and all liftsand leads, curing, addingrequired dosages (as per themanufacturers recommenda-tions) of approved plasticiseras admixtures (excluding costof reinforcement). The itemincludes heavy dewatering toany extent of wateraccumulated by any sourceby using pumps or manually.The cost also includes alltypes of taxes, excise duty,sales tax, insurance, cesslevied by local authority etc.complete.
7. Providing and casting M-30grade Ready Mix Concrete(RMC) using design mixwith minimum cementcontent 360 kg./cum. as perIRC specifications controlledconcrete using maximum25mm/30mm size and downgraded aggregate of trapmetal for RCC verticalwalls as per detailed drawing,with maximum water cementratio of 0.40 (for severecondition) as directed, withcontractors labours, material,plant & equipments,
296.00 8,100.00 Cum. 23,97,600.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.205C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTscaffolding, shuttering,formwork, staging includingtransporting, placingvibrating with mechanicalsurface vibrator and all liftsand leads, curing, addingrequired dosages (as per themanufacturers recommenda-tions) of approved plasticiseras admixtures (excluding costof reinforcement). The itemincludes heavy dewatering toany extent of wateraccumulated by any sourceby using pumps or manually.The cost also includes alltypes of taxes, excise duty,sales tax, insurance, cesslevied by local authority etc.complete.
8. Providing and casting M-30grade Ready Mix Concrete(RMC) using design mix withminimum cement content 360kg./cum. as per IRCspecifications controlledconcrete using maximum25mm/30mm size and downgraded aggregate of trap metalfor RCC slabs as per detaileddrawing, with maximumwater cement ratio of 0.40(for severe condition) asdirected, with contractorslabours, materials, plant &equipments, scaffolding,shuttering, formwork, stagingincluding transporting,
392.00 8,100.00 Cum. 31,75,200.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.206C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTplacing vibrating withmechanical surface vibratorand all lifts and leads, curing,adding required dosages (asper the manufacturersrecommendations) ofapproved plasticiser asadmixtures (excluding cost ofreinforcement). The itemincludes heavy dewatering toany extent of wateraccumulated by any source byusing pumps or manually.The cost also includes alltypes of taxes, excise duty,sales tax, insurance, cesslevied by local authority etc.complete.
9. Providing and placing, fixingin all RCC item offoundation, sub-structure andsuperstructures, T.M.T. barreinforcement of variousdiameters as per IS 1786(latest version) of approvedmake for reinforcement inany position as per detaileddrawing or as directed for alldiameters including, cutting,bending in shape, fixing inposition with galvanisedbinding wire of 17 guage ortack welding as per IS 9417(latest version) as directedetc. complete includingdewatering using pumps ormanually during placingreinforcement and keeping
80.00 52,524.00 M.T. 42,01,920.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.207C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTdry during concreting ofRCC members. The cost alsoincludes all types of taxes,excise duty, sales tax,insurance, cess levied bylocal authority etc. complete.Note :- The quantity to bemeasured and paid for thisitem shall not includewastage in cutting. Actuallyinstalled and placed inposition steel shall be paidfor including hooks, laps,bends, pins and chairs. Noseparate payment shall bemade for binding wire ortack welding.
10. Providing and fixing 100mm dia. AC/PVC pipes forweep holes, staggered as perdrawing or as directed byEngineer etc. complete.
1461.00 98.00 Rmt. 1,43,178.00
11. Providing trap rubble fillingbehind the walls/abutments/returns including filling voidswith gravel, hand packingand compacting the rubble asper detailed drawing anddesign etc. complete.
3987.00 364.00 Cum. 14,51,268.00
12. Providing and fixing inposition expansion jointswith premoulded bitumenfiller 12 mm thick as perdetailed specification and asdirected by Engineer etc.complete.
68.00 675.30 Sqm. 45,920.40
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.208C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
13. Disposal of surplusexcavated materials upto2.00 Km. lead and all liftsincluding loading, unloading,transporting by mechanicalor other means, stacking,levelling and spreading asdirected by Engineer etc.complete.
2790.00 77.10 Cum. 2,15,109.00
Total of Part – III ` 2,59,76,996.35
Total Carried over to Summary of Schedule “A” on Sl.Pg.No.244
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.209C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
SCHEDULE “A”
BILL OF QUANTITIES
PART – IV : WATER SUPPLY WORK
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
1 a) Excavation for pipetrenches in all types of soil,soft murum, hard murumwith boulders and soft rockincluding removing theexcavated materials upto adistance of 50 metres and alllifts, stacking and spreadingas directed includingdewatering unless providedelsewhere, preparing the bedfor the foundation andnecessary backfilling,ramming, watering completeexcluding shoring andstrutting etc. complete.
Note : All payments towardsthe royalty, fees, taxes etc.shall be borne by thecontractor.
1038.00 165.67 Cum. 1,71,965.46
1 b) Excavation for pipetrenches / foundation inhard Rock by chiseling /wedging including removingthe excavated materials uptoa distance of 50 metres andall lifts, stacking andspreading as directedincluding dewatering unless
52.00 946.05 Cum. 49,194.60
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.210C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTprovided elsewhere directedthe bed for the foundationand necessary backfillingwith available earth, murum,ramming, watering completeexcluding shoring andstrutting etc. complete.
Note :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) Excavated rock will beproperty of contractor.
2 a) Filling in trenches belowpipes with approvedexcavated material in 15 cmto 20 cm layers includingwatering and compactioncomplete.
52.00 43.00 Cum. 2,236.00
2 b) Filling in trenches belowpipes with contractor’smurum in 15 cm to 20 cmlayers including watering andcompaction complete.
32.00 218.67 Cum. 6,997.44
3. Providing D.I. K-7 gradepipes with internal cementmortar lining including alltaxes, inspection & testingcharges, insurance, railwayfreight, loading, unloadingfrom railway wagon, loadinginto truck, transport todepartmental stores/site,unloading, stacking, etc.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.211C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTcomplete. (IS: 8329-2000Latest Version).Note : Only 75% rate shall bepayable till satisfactoryHydraulic testing given.
a) 100mm dia. 1046.00 977.00 Rmt. 10,21,942.00
b) 150mm dia. 210.00 1,434.00 Rmt. 3,01,140.00
c) 200mm dia. 322.00 1,692.00 Rmt. 5,44,824.00
d) 250mm dia. 0.00 2,242.00 Rmt. 0.00
e) 300mm dia. 0.00 2,826.00 Rmt. 0.00
4. Lowering laying & jointingwith SBR rubber gasketsC.I., D.I., S.S. Pipes ofvarious classes with CI/DI/MS specials of following dia.in proper position, grade andalignment as directed byEngineer includingconveyance of material fromstores to site of work,including cost of jointingmaterials and rubber ringslabour, giving hydraulictesting etc. complete.Notes :1) Only SBR Rubber gaskets
to be used.2) The rate is inclusive of
third party inspectioncharges.
a) 100mm dia. 1046.00 74.00 Rmt. 77,404.00
b) 150mm dia. 210.00 99.00 Rmt. 20,790.00
c) 200mm dia. 322.00 130.00 Rmt. 41,860.00
d) 250mm dia. 0.00 169.00 Rmt. 0.00
e) 300mm dia. 0.00 190.00 Rmt. 0.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.212C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT5. Providing and Supplying ISI
standard D.I. specials &fitting with sealing rubbergasket for S.B.R, completewith cast iron follower glandand mild steel nut bolt'scoated or otherwise protectedfrom rusting and suitable forD.I. Pipes including cost ofall labours, materials,transportation upto Depart-mental store/site loading andunloading including all taxes,inspection charges, insuranceetc. complete.Note : Only 75% rate shall bepayable till satisfactoryHydraulic testing given.a) 80mm to 300mm 552.00 97.00 Kg. 53,544.00b) 350mm and above 0.00 118.00 Kg. 0.00
6. Providing and making leadcaulked joint with moltenlead to Cast Iron Pipes and /or specials of all classes andfitting of following diaincluding cost of lead and alljointing material, labour,hydraulic testing etc.complete.Note : Only 75% rate shallbe payable till satisfactoryHydraulic testing given.a) 100mm dia. 0.00 607.00 Joint 0.00b) 150mm dia. 0.00 904.00 Joint 0.00c) 200mm dia. 0.00 1,320.00 Joint 0.00d) 250mm dia. 0.00 1,605.00 Joint 0.00e) 300mm dia. 0.00 1,929.00 Joint 0.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.213C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT7 a) Providing and making
flanged joints to flangedC.I. / M.S. / D.I. pipes of allclasses / specials etc.including cost of all jointingmaterials (rubber packing,nut bolts, etc.), labour,hydraulic testing etc.complete.Note : Only 75% rate shallbe payable till satisfactoryhydraulic testing is given.a) 100mm dia. 0.00 274.00 No. 0.00b) 150mm dia. 0.00 552.00 No. 0.00c) 200mm dia. 0.00 572.00 No. 0.00d) 250mm dia. 0.00 824.00 No. 0.00e) 300mm dia. 0.00 854.00 No. 0.00
7 b) Supply and jointing of C.I./D.I. Mechanical JointCollars suitable for C.I./D.I. Pipes and dimensionallydescribed in Table -13 of IS-13382/1992 complete withsealing rubber gasket ofS.B.R. (dimensionallydescribed in IS-12820/1989)with follower gland and mildsteel nut bolts coated orotherwise protected fromrusting and suitable for C.I.pipes.a) 100mm dia. 1.00 974.00 No. 974.00b) 150mm dia. 0.00 1,750.00 No. 0.00c) 200mm dia. 0.00 1,997.00 No. 0.00d) 250mm dia. 1.00 3,202.00 No. 3,202.00e) 300mm dia. 0.00 4,099.00 No. 0.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.214C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
8. Providing, lowering, layingand jointing in positionfollowing diameter doubleflange short body patterntype manually operatedSluice Valve PN-1.6 typeconfirming for IS : 2906 /14846 including worm geararrangements as per testpressure stainless steelspindle, caps including alltaxes, inspection charges,insurance, transportation,cost of all labour jointingmaterial, including nut boltsand giving satisfactoryhydraulic testing, etc.complete.Note : Only 75% rate ispayable till satisfactoryhydraulic testing is given.
a) 100mm dia. 1.00 6,781.00 No. 6,781.00
b) 250mm dia. 1.00 36,098.00 No. 36,098.00
9. Cutting and champheringof C.I. pipes of followingdiameters including cost ofall materials and labourinvolved, etc. complete asdirected by Engineer (for allclass of pipes).
a) 100mm dia. 16.00 39.00 No. 624.00
b) 150mm dia. 10.00 59.00 No. 590.00
c) 200mm dia. 6.00 76.00 No. 456.00
d) 250mm dia. 4.00 109.00 No. 436.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.215C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
10. Supplying transporting, theS.P. fire hydrants includingduck foot bend, S.V. andS.V. road box, painting thehydrant, fixing the saddlepiece, supplying, and layingrequired length of C.I.pipeline and jointing thesame spun yarn, molten leadlincluding caulking, fixingthe S.V. road box in onebrick masonry chamber in1:5 C.M. with 12 mm thick1:3 cement plaster bothinside and outside on 1:3:6C.C. 150 mm thick etc.complete specified anddirected. (As per I.S.900/1965 Revised)
1.00 10,819.00 No. 10,819.00
11. Providing and laying drytrap metal soling 15 cm. to20 cm. thick including handpacking with metal, rubblechips, application of requiredmurum/stone dust blindageand compaction includingwatering etc. complete withall leads, including necessaryheavy dewatering eithermechanically or manuallyetc. complete.
2.00 775.40 Cum. 1,550.80
12. Providing and laying cementconcrete M-20 grade ReadyMix Concrete (RMC) usingdesign mix with minimumcement content 310 kg./cum.as per IRC specifications and
2.00 5,950.00 Cum. 11,900.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.216C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTmaximum water cement ratio0.45 using maximum 25/30mm size and down trap metalfor foundation and beddingwith all labours, materials,plant & equipments,shuttering formwork, staging,including transporting,placing, vibrating withmechanical vibrator,finishing and curing etc.complete. The item alsoincludes heavy dewatering toany extent of wateraccumulated by any sourceby using pumps or manually.The cost also includes alltypes of taxes, sales tax,insurance, cess levied bylocal authority etc. complete.
13. Providing and placing, fixingin all RCC item offoundation, sub-structure andsuperstructures, T.M.T. barreinforcement of variousdiameters as per IS 1786(latest version) of approvedmake for reinforcement inany position as per detaileddrawing or as directed for alldiameters including, cutting,bending in shape, fixing inposition with galvanisedbinding wire of 17 guage ortack welding as per IS 9417(latest version) as directedetc. complete includingdewatering using pumps or
0.20 52,524.00 M.T. 10,504.80
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.217C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTmanually during placingreinforcement and keepingdry during concreting ofRCC members. The cost alsoincludes all types of taxes,excise duty, sales tax,insurance, cess levied bylocal authority etc. complete.Note : The quantity to bemeasured and paid for thisitem shall not includewastage in cutting. Actuallyinstalled and placed inposition steel shall be paidfor including hooks, laps,bends, pins and chairs. Noseparate payment shall bemade for binding wire ortack welding.
14. Valve chamber withprecast steel fibrereinforced concrete frameand covers (S.F.R.C frameand covers)Providing and ConstructingB.B. Masonry valvechamber with 15cm thick1:3:6 proportion PCCbedding, excludingexcavation, B.B. Masonry inC.M. 1:5 Proportion precastS.F.R.C. frame and cover,etc. complete as directed byEngineer.(Note : Wall thickness :0.23 M for depth of 1.2 Mand 0.35 M for balance
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.218C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTdepth exceeding 1.2 M)
a) 90 x 90 cm internal sizeand depth upto 1.2 m.with SFRC frame andcover of size 540 mm dia.fixed in RCC slab.
1.00 8,745.00 No. 8,745.00
b) 1.2 x 1.2 m. internal sizeand depth upto 1.2 m.with SFRC frame andcover of size 540 mm dia.fixed in RCC slab.
1.00 11,825.00 No. 11,825.00
c) Add for every increase indepth of 30 cm. or partthereof.
2.00 6,600.00 Rmt. 13,200.00
15. Providing, lowering, layingand fixing in properalignment and position 50mm dia. Kinetic Air ValveFlanged type PN-1.6 as perIS-10845 and MJP’sstandard specificationsdouble orifice typecombined with screw downisolating valve, small orificeelastic ball resting on a gunmetal, orifice nipple, largeorifice vulcanite ball seatingon moulded seat ring, inletface and drilled, includingall taxes (Central and local),insurance, third partyinspection charges, loading,unloading, transportationupto departmental stores /site, cost of all material andgiving satisfactory hydraulictesting etc. complete.
1.00 12,873.00 No. 12,873.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.219C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
16. Disposal of excavatedmaterial upto 2.0 km leadincluding loading, unloading,transporting by mechanicalor other means, stacking,levelling and spreading asdirected by Engineer etc.complete beyond initial leadof 50m.
30.00 77.10 Cum. 2,313.00
Total of Part – IV ` 24,24,789.10
Total Carried over to Summary of Schedule “A” on Sl.Pg.No.244
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.220C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
SCHEDULE “A”
BILL OF QUANTITIES
PART – V : SEWERAGE WORK
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
1. Excavation for pipe trenches/ all type of foundations inearth, soil of all types, sand,gravel, soft murum, hardmurum, hard murum withboulders, soft rock, marineclay, soft soil etc. for liftupto 1.5 m. includingremoving the excavatedmaterial upto a distance of 50m beyond the constructionarea, stacking and spreadingas directed, including all liftspreparing the bed for bedconcrete/foundations etc.complete including backfilling, inclusive of heavydewatering either manuallyor mechanically by all meansupto any extent includingshoring and strutting etc.complete. Standard widthshall be considered forcomputing quantity as perParticular Specifications.
Note : All payments towardsthe royalty, fees, taxes etc.shall be borne by thecontractor.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.221C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
a) Upto 1.50 m. depth 1429.00 218.20 Cum. 3,11,807.80
b) Lift above 1.50 m. & upto 3.0 m. depth
894.00 230.20 Cum. 2,05,798.80
c) Lift above 3.0 m. & up to4.50 m. depth
286.00 242.20 Cum. 69,269.20
d) Lift above 4.50 m. depth. 0.00 254.20 Cum. 0.00
2 a) Excavation for foundation/pipe trenches in hard rockand concrete road bychiselling, wedging, linedrilling by mechanical meanswith the help of hydraulicrock driller etc. includingtrimming and levelling thebed, removing the excavatedmaterial upto a distance of 50meters beyond the area,including stacking as directedby Engineer, heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, includingbackfilling, etc. complete.
Note :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) Excavated rock will beproperty of contractor.
a) Upto 1.50 m. depth 613.00 946.45 Cum. 5,80,173.85
b) Lift above 1.50 m. & upto 3.0 m. depth
383.00 965.45 Cum. 3,69,767.35
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.222C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTc) Lift above 3.0 m. & up to
4.50 m. depth123.00 984.45 Cum. 1,21,087.35
d) Lift above 4.50 m. depth 0.00 1,003.45 Cum. 0.00
2 b) Excavation for foundations/ pipe trenches in hard rockby control blasting,wedging, line drilling, orany other type by usingchemicals etc. includingtrimming and levelling thebed, removing the excavatedmaterial upto a distance of50 m. beyond theconstruction area, includingbackfilling, heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. including shoring andstrutting, removing away theexcavated material from siteafter taking measurementetc. complete.
Note :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) Excavated rock will beproperty of contractor.
a) Upto 4.50 m. depth 0.00 346.05 Cum. 0.00b) Lift above 4.50 m. depth 0.00 365.00 Cum. 0.00
3. Providing dry trap / rubblestone soling 15cm to 20 cmthick including hand packing& compacting etc. complete.
127.00 775.40 Cum. 98,475.80
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.223C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT4. Providing, transporting and
placing in position cementconcrete M-20 gradeReady Mix Concrete withminimum cement content310 kg./cum. as per IRCspecifications and maximumwater cement ratio 0.45 and/or as directed by Engineerfor all diameters of sewerline including providinglifting arrangement with allleads, transporting,lowering, laying forbedding and encasing ofpipes in pipe trenches /foundation etc. completeincluding heavy dewateringupto any extent bymechanical means with thehelp of pumping machinerywith the desired H.P. alllifts, while laying etc.complete.
60.00 5,950.00 Cum. 3,57,000.00
5. Providing lowering, layingand jointing RCC, S/S pipesmanufactured as per IS:458(latest version) having ISI offollowing NP-3 class withrubber ring joints as directedin proper grade includingcost of materials, rubberrings, all taxes (central andlocal), insurance (if any),transportation, loading andunloading and hydraulictesting as per I.S. 458 (latestversion) including necessary
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.224C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTheavy dewatering by allmeans up to any extent etc.complete.Notes :1) The contractor has to
procure the pipes fromagency who is approvedmanufacturer with ISIcertification and mark.The list of approvedmanufacturers is placedwith this tender.
2) The contractor has tomake his own arrange-ment for inspection &testing the pipeline as perI.S. standard.
a) 250 mm dia. 767.00 726.00 Rmt. 5,56,842.00
b) 300 mm dia. 185.00 806.00 Rmt. 1,49,110.00
c) 350 mm dia. 39.00 1,577.00 Rmt. 61,503.00
d) 400 mm dia. 261.00 1,925.00 Rmt. 5,02,425.00
e) 450 mm dia. 0.00 2,045.00 Rmt. 0.00
6 a) Providing and constructingBB masonry (IInd sort)circular/ concentric conicalmanhole with 1.22 m dia atbottom and 0.53 m dia. at topwith 230 mm thick brickmasonry (IInd sort)inC.M.1:3 and 20 mm thicksmooth cement plaster inC.M. 1:2 from inside andoutside, including curingproviding and fixingcopolymer, polypropylene,steel reinforcement PVC
7.00 13,001.10 No. 91,007.70
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.225C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTheavy duty step/ footrest ofapproved make conformingto an ASTM D-4101specification to take load asper IS 5455 includingproviding foundationconcrete in M-20 and 300mm thick with benching andchanneling, supplying andfixing RCC factory madesteel fibre reinforced (SFRC)heavy duty manhole coverand frame with steel bearingof cover into the frameincluding shoring struttingetc. complete. as per designand drawing including heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, till thecompletion of work. (Depthupto 1.5 m. from top offrame to invert level of pipe).The Manhole shall be as perstandard drawings.Note : The contractor has tomake his own arrangementfor testing the man holecovers & frames, steps etc.complete.
6 b) Same as Item No.6 a) abovebut for depth beyond 1.50 m.and upto 2.00 m.
17.00 15,929.25 No. 2,70,797.25
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.226C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
7 a) Providing and constructingBB masonry (IInd sort)circular/ concentric conicalmanhole with 1.53 m dia atbottom and 0.53m. dia. at topwith 230 mm thick brickmasonry (IInd sort) in C.M.1:3 and 20 mm thick smoothcement plaster in C.M 1:2from inside and outside,including curing providingand fixing copolymer,polypropylene, steelreinforcement PVC heavyduty step/ footrest ofapproved make conformingto an ASTM D-4101specification to take load asper IS 5455 includingproviding foundationconcrete in M-20 and 300mm thick with benching andchanneling, supplying andfixing RCC factory madesteel fibre reinforced (SFRC)heavy duty manhole coverand frame with steel bearingof cover into the frameincluding shoring struttingetc. complete as per designand drawing including heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, till thecompletion of work. (Depthupto 2.15 m. from top offrame to invert level of pipe).
16.00 21,163.53 No. 3,38,616.48
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.227C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTThe Manhole shall be as perstandard drawings.Note : The contractor has tomake his own arrangementfor testing the man holecovers & frames, steps etc.complete.
7 b) Same as Item No.7 a) abovebut for depth beyond 2.16 m.and upto 4.99 m.
24.00 10,562.87 Rmt. 2,53,508.88
7 c) Same as Item No.7 a) abovebut for depth beyond 5.00 m.and upto 9.00 m.
0.00 13,667.53 Rmt. 0.00
8 a) Providing and constructingBB masonry (IInd sort)circular/concentric conicalmanhole with 1.83 m dia atbottom and 0.53 m. Dia. attop with 230 mm thick brickmasonry (IInd sort) in C.M.1:3 and 20 mm thick smoothcement plaster in C.M. 1:2from inside and outside,including curing providingand fixing copolymer,polypropylene, steelreinforcement PVC heavyduty step/ footrest ofapproved make conformingto an ASTM D-4101specification to take load asper IS 5455 includingproviding foundationconcrete in M-20 and 300mm thick with benching and
0.00 27,198.80 No. 0.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.228C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTchannelling, supplying andfixing RCC factory madesteel fibre reinforced (SFRC)heavy duty manhole coverand frame with steel bearingof cover into the frameincluding shoring struttingetc. complete as per designand drawing including heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, till thecompletion of work. (Depthupto 2.28 m. from top offrame to invert level of pipe).The Manhole shall be as perstandard drawings.Note : The contractor has tomake his own arrangementfor testing the man hole,frame, cover & steps etc.complete.
8 b) Same as Item No.8 a) abovebut for depth beyond 2.29 m.and upto 4.99 m.
0.00 12,058.40 Rmt. 0.00
8 c) Same as Item No.8 a) abovebut for depth beyond 5.00 m.and upto 9.00 m.
0.00 15,260.30 Rmt. 0.00
9 a) Providing and constructingBB masonry (IInd sort)rectangular / square cumtrapezoidal manhole of size1.53 x 1.53 m at bottom and
20.00 30,264.00 No. 6,05,280.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.229C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT910 x 610 mm at top with230 mm thick brick masonry(IInd sort)in C.M. 1:3 and 20mm thick smooth cementplaster in C.M. 1:2 frominside and outside, includingcuring providing and fixingcopolymer, polypropylene,steel reinforcement PVCheavy duty step/ footrest ofapproved make conformingto an ASTM D-4101 specifi-cation to take load as per IS5455 including providingfoundation concrete in M-20and 300 mm thick withbenching and channeling,supplying and fixing RCCfactory made steel fibrereinforced (SFRC) heavyduty manhole cover andframe with steel bearing ofcover into the frameincluding shoring struttingetc. complete as per designand drawing including heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, till thecompletion of work. (Depthupto 2.15 m. from to top offrame to invert level of pipe).The Manhole shall be as perstandard drawings.Note : The contractor has tomake his own arrangementfor testing the man hole
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.230C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTcovers & frames, steps etc.complete.
9 b) Same as Item No.9 a) abovebut for depth beyond 2.16 m.and upto 4.99 m.
7.00 13,144.25 Rmt. 92,009.75
9 c) Same as Item No.9 a) abovebut for depth beyond 5.00 m.and upto 9.00 m.
0.00 17,797.35 Rmt. 0.00
10 a) Providing and constructingBB masonry (IInd sort)rectangular/ square cumstrapezoidal manhole of size1.83 x 1.53 m. at bottom and910 x 610 mm at top with230 mm thick brick masonry(IInd sort)in C.M. 1:3 and 20mm thick smooth cementplaster in C.M. 1:2 frominside and outside, includingcuring providing and fixingcopolymer, polypropylene,steel reinforcement PVCheavy duty step/ footrest ofapproved make conformingto an ASTM D-4101specification to take load asper IS 5455 includingproviding foundationconcrete in M-20 and 300mm thick with benching andchannelling, supplying andfixing RCC factory madesteel fibre reinforced (SFRC)heavy duty manhole coverand frame with steel bearing
0.00 36,110.70 No. 0.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.231C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTof cover into the frameincluding shoring struttingetc. complete as per designand drawing including heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, till thecompletion of work.(Depthupto 2.15 m. from top offrame to invert level of pipe).The Manhole shall be as perstandard drawings.Note : The contractor has tomake his own arrangementfor testing the man hole.
10 b) Same as Item No.10 a) abovebut for depth beyond 2.16 m.and upto 4.99 m.
0.00 14,135.64 Rmt. 0.00
10 c) Same as Item No.10 a) abovebut for depth beyond 5.00 m.and upto 9.00 m.
0.00 18,434.85 Rmt. 0.00
11. Providing scrappermanhole arrangement byproviding 300mm deep siltchamber as per the drawingand as directed by Engineer.For Item No. 9 & 10 above.a) For size 1.53 x 1.53 m.
scrapper manhole depthfrom 2.16 m. to 4.99 m.
2.00 3,774.10 No. 7,548.20
12. Providing RCC spunventilating shaft 7.30 m inheight, uniformly tapered
2.00 6,358.00 No. 12,716.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.232C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTfrom 29 cms at bottom to 10cm at top includingconstructing flue chamber ofsize 450 mm x 450 mm x300 mm or as per detaildesign and drawing or asdirected includingconstruction BB masonry inCM 1:3 plastered frominside and outside in CM1:3, PCC bedding in M-20grade of 150 mm thicknessfor vent shaft and fluechamber including RCCprecast slab of 75 mm thickfor the flue chamberconnecting the vent shaft tomanhole by 150 mm diaNP2 class RCC pipes withcollar joint or as directedwith required length of pipeas directed with CC M-20,150 mm thick beddingincluding heavy dewateringupto any extent, bymanually or mechanicallyincluding excavation withshoring and strutting etc.complete as perspecifications and designand drawing includingcuring etc. complete.
13. Providing various dia.stoneware / RCC pipe invertical drop of 0.60 mincluding required dia.stoneware pipes fixed inbrick masonry of the
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.233C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTmanhole at required leveland providing 250 mm diastoneware right angle bendpipe dia x pipe dia. x pipedia. mm SW double teejunction including cutting,jointing and filleting as perstandard specificationsencased in half brick thickset in cement mortar 1:2 allround the pipes, double teebend and extra brick workbelow bend upto thefoundations of the manholeand tapering portion of themanhole plastering theexposed surfaces, afterracking out the joints of themasonry, to a depth of 20mm thick in CM 1:1 and neatcement rendering so as togive smooth surfaceincluding plugging theopening etc. complete withnecessary dewateringmechanically or manually upto any extent as directed byEngineer (depth upto 0.6 m).a) 250mm dia. 2.00 2,900.00 No. 5,800.00b) 300mm dia. 2.00 3,397.00 No. 6,794.00c) 400mm dia. 2.00 4,686.00 No. 9,372.00
14a. Filling in the pipe trenches/ all pipe foundations asdirected with approvedmurum obtained fromexcavated material in 15 cmto 20cm layers with all leadsand all lifts including
100.00 56.00 Cum. 5,600.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.234C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTwatering and compactionetc. complete.
14b. Filling in pipe trenches/onall type of foundations withapproved murum obtainedfrom approved quarryarranged by the contractor,laying in 15 cm to 20 cmlayers including loading,transporting, unloading uptogiven site, stacking,spreading, levelling asdirected and laying in layersof 15 cm to 20 cm includingwatering and compactionlayer by layer with the helpof mechanical rammer withall leads and lifts etc.complete (Environmentalcess @ `1.00/cu.m. of grossquantity without standarddeduction will be deductedfrom the contractor'spayment.)Notes :1. All payments towards the
royalty, environmentalcess etc. shall be borne bythe contractor.
2. The Environmental cess atthe rate of `1/m3 of grossquantity without standarddeductions will bededucted from thecontractor’s payment.
3. The gross volume of theembankment shallreduced by 15% for
100.00 599.00 Cum. 59,900.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.235C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTmonthly payments / R.A.bills and 10% for finalpayment.
15. Disposal of surplusexcavated materials upto 2.0Km. lead and all liftsincluding loading, unloading,transporting by mechanicalor other means, stacking,levelling and spreading asdirected by Engineer etc.complete.
930.00 77.10 Cum. 71,703.00
Total of Part – V ` 52,13,913.41
Total Carried over to Summary of Schedule “A” on Sl.Pg.No.244
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.236C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
SCHEDULE “A”
BILL OF QUANTITIES
PART – VI : UTILITY SERVICES
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
1. Excavation for pipe trenches/ all type of foundations inearth, soil of all types, sand,gravel, soft murum, hardmurum, hard murum withboulders, soft rock, marineclay, soft soil etc. for liftupto 1.5 m. includingremoving the excavatedmaterial upto a distance of 50m beyond the constructionarea, stacking and spreadingas directed, including all liftspreparing the bed for bedconcrete/foundations etc.complete including backfilling, inclusive of heavydewatering either manuallyor mechanically by all meansupto any extent excludingshoring and strutting etc.complete. Standard widthshall be considered forcomputing quantity as perParticular Specifications.
Note : All payments towardsthe royalty, fees, taxes etc.shall be borne by thecontractor.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.237C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
a) Upto 1.50 m. depth 2422.00 218.20 Cum. 5,28,480.40
b) Lift above 1.50 m. & upto 3.0 m.
334.00 230.20 Cum. 76,886.80
2. Excavation for foundation/pipe trenches in hard rockand concrete road bychiselling, wedging, linedrilling by mechanical meanswith the help of hydraulicrock driller etc. includingtrimming and levelling thebed, removing the excavatedmaterial upto a distance of 50meters beyond the area,including stacking as directedby Engineer, heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, includingbackfilling, etc. complete.
Note :1) All payments towards the
royalty, fees, taxes etc.shall be borne by thecontractor.
2) Excavated rock will beproperty of contractor.
a) Upto 1.50 m. depth 443.00 946.45 Cum. 4,19,277.35
b) Lift above 1.50 m. & upto 3.0 m.
67.00 965.45 Cum. 64,685.15
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.238C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
3. Providing and laying drytrap rubble soling 23 cm.thick including hand packingwith metal, rubble chips,application of requiredmurum/stone dust blindageand compaction includingwatering etc. complete withall leads, including necessaryheavy dewatering eithermechanically or manuallyetc. complete.
154.00 775.40 Cum. 1,19,411.60
4. Providing and laying cementconcrete M-20 grade ReadyMix Concrete (RMC) usingdesign mix with minimumcement content 310 kg./cum.as per IRC specifications andmaximum water cement ratio0.45 using maximum 25/30mm size and down trap metalfor foundation and beddingwith all labours, materials,plant & equipments,shuttering formwork, staging,including transporting,placing, vibrating withmechanical vibrator,finishing and curing etc.complete. The item alsoincludes heavy dewatering toany extent of wateraccumulated by any sourceby using pumps or manually.The cost also includes alltypes of taxes, sales tax,insurance, cess levied bylocal authority etc. complete.
113.00 5,950.00 Cum. 6,72,350.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.239C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
5. Providing, lowering, layingand jointing RCC, S/S pipesmanufactured as per IS:458(latest version) having ISI offollowing NP-3 class withtyton / collar joints / rubberring joint as directed inproper grade including costof materials, rubber ring, alltaxes (central and local)transportation, loading andunloading and hydraulictesting as per I.S. 458 (latestversion) including necessaryheavy dewatering by allmeans up to any extent etc.complete.
Notes :1) The contractor has to
procure the pipes fromagency who is approvedmanufacturer with ISIcertification and mark.The list of approvedmanufacturers is placedwith this tender.
2) The contractor has tomake his ownarrangement for testingthe pipeline as per I.S.standard.
a) 300 mm dia. 540.00 806.00 Rmt. 4,35,240.00
b) 250 mm dia. 880.00 726.00 Rmt. 6,38,880.00
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.240C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
6. Providing and constructingbrick masonry chamber of1500 x 600 mm upto 1.50 m.depth including necessaryexcavation, PCC forfoundation in cementconcrete 1:2:4, brick work inC.M. 1:3, external & internalplastering in C.M. 1:3,coping in C.C. 1:2:4 withRCC precast covers as perdesign and drawing etc.complete.(Note : Wall thickness :0.23 M for depth upto 1.2M and 0.35 M for balancedepth exceeding 1.2 M)
44.00 9,611.00 No. 4,22,884.00
7. Providing and constructingBB masonry (IInd sort)circular/ concentric conicalmanhole with 1.22 m dia atbottom and 0.53 m dia. at topwith 230 mm thick brickmasonry (IInd sort)inC.M.1:3 and 20 mm thicksmooth cement plaster inC.M. 1:2 from inside andoutside, including curingproviding and fixingcopolymer, polypropylene,steel reinforcement PVCheavy duty step/ footrest ofapproved make conformingto an ASTM D-4101specification to take load asper IS 5455 includingproviding foundationconcrete in M-20 and 300
65.00 13,001.10 No. 8,45,071.50
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.241C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTmm thick with benching andchanneling, supplying andfixing RCC factory madesteel fibre reinforced (SFRC)heavy duty manhole coverand frame with steel bearingof cover into the frameincluding shoring struttingetc. complete. as per designand drawing including heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, till thecompletion of work. (Depthupto 2.0 m. from top offrame to invert level of pipe).The Manhole shall be as perstandard drawings.Note : The contractor has tomake his own arrangementfor testing the man holecovers & frames, steps etc.complete.
8 a) Providing and constructingBB masonry (IInd sort)circular/ concentric conicalmanhole with 1.53 m dia atbottom and 0.53m. dia. at topwith 230 mm thick brickmasonry (IInd sort) in C.M.1:3 and 20 mm thick smoothcement plaster in C.M 1:2from inside and outside,including curing providingand fixing copolymer,polypropylene, steel
23.00 21,163.53 No. 4,86,761.19
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.242C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNTreinforcement PVC heavyduty step/ footrest ofapproved make conformingto an ASTM D-4101specification to take load asper IS 5455 includingproviding foundationconcrete in M-20 and 300mm thick with benching andchanneling, supplying andfixing RCC factory madesteel fibre reinforced (SFRC)heavy duty manhole coverand frame with steel bearingof cover into the frameincluding shoring struttingetc. complete as per designand drawing including heavydewatering upto any extentby mechanical means withthe help of pumpingmachinery with the desiredH.P. all lifts, till thecompletion of work. (Depthupto 2.15 m. from top offrame to invert level of pipe).The Manhole shall be as perstandard drawings.Note : The contractor has tomake his own arrangementfor testing the man holecovers & frames, steps etc.complete.
8 b) Same as Item No.8 a) abovebut for depth beyond 2.16 m.and upto 4.99 m.
25.00 10,562.87 Rmt. 2,64,071.75
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.243C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
I. NO. DESCRIPTION QTY. RATE PER AMOUNT
9. Disposal of surplusexcavated materials upto 2.0Km. lead and all liftsincluding loading, unloading,transporting by mechanicalor other means, stacking,leveling and spreading asdirected by Engineer etc.complete.
2480.00 77.10 Cum. 1,91,208.00
Total of Part – VI ` 51,65,207.74
Total Carried over to Summary of Schedule “A” on Sl.Pg.No.244
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.244C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
SUMMARY OF SCHEDULE “A”
PART NO. PARTICULARS TOTALB/F FROMSL.PG.NO.
AMOUNT
Part-I Road Work 193 1,33,68,927.62Part-II Footpath Work 198 48,07,874.05
Part-III Storm Water Drain Work 208 2,59,76,996.35Part-IV Water Supply Work 219 24,24,789.10Part-V Sewerage Work 235 52,13,913.41Part-VI Utility Services 243 51,65,207.74
A) Total of Schedule “A” ` 5,69,57,708.27
B) ADD/SUBSTRACT (+/-) _____% quoted by `the contractor to reflect the total cost.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.245C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Notes :
1. Use of OPC or PPC Cement is permitted subject to approval from Engineer,provided OPC / PPC cement satisfy the required criteria provided in relevantI.S. Code. The mix design shall have to be prepared for particular type ofcement satisfying its provision.
2. No additional cost or rebate shall be applicable in case of use of either OPC orPPC.
3. The contractor has to make his own arrangement for making necessarydiversion of flow of water without affecting the adjoining structures or publicproperty along the bank of existing channel and without any extra cost.Further, the Storm Water flow of the existing nallah shall be maintained by thecontractor throughout the contract period including monsoon without any extracost.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.246C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
ANNEXURE ‘A’
Name of Work : Integrated infrastructure development of Roads, Footpath,S.W. Drain, Water Supply & Sewerage etc. for 12.5% Schemein Sector – 2A at Karanjade, Panvel.
G.C.C.Clause No.
1.1(a) (iv) The Engineer for the Contract : Name : Shri. A.A. Tyagi
Designation : Executive Engineer (PNL-II)
43.1 Time for completion
A. Contract as whole : 12 (Twelve) Months (including monsoon)
B. Sections (Part of Groups ofItems)
: Not Applicable
49.1 Defects Liability Period : 12 (Twelve) Months
49.4 Percentage to be charged assupervision charges for the workgot executed through other means
: 24.5%
60.10 The rate of interest applicable forpayment delayed.
: As applicable
70.1 i) Centre for Price VariationIndices
: Mumbai
ii) Price Variation Clause Factors :
PL : 23%
PM : 72%
PF : 5%
Total : 100%
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.247C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
iii) Base Materials and Base Rates Applicable :
Base Rate of Cement (Co) : ` 6,160.00 per M.T.
Base Rate of Steel (So) : ` 48,525.00.00 per M.T.
Base Rate of Bitumen (Bo)
30/40 (VG 40) : ` 50,112.00 per M.T.
60/70 (VG 30) : ` 46,829.00 per M.T.
80/100 (VG 10) : ` 45,799.00 per M.T.
Base Rate of Pig Iron for CI/DI Pipes (Po) : ` 27,199.00 per M.T.
Base Rate of P.O.L. (Fo) : ` 53.71 per Litre
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date: Date:
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.248C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
SCHEDULE ‘B’
(Material to be issued to contractor by CIDCO)
Sr.No.
Particular ofMaterials
Rate of whichmaterial willbe issued in
`
Place of issue Rate of Recovery incase of misuse or
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.279C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
TABLE - 2GRADING FOR COARSE GRADED GRANULAR SUB-
BASE MATERIALSIS Sieve Designation Per cent by weight passing the IS Sieve
Grading - I Grading - II Grading - III75.0 mm 100 -- --53.0 mm 10026.5 mm 55 - 75 50 - 80 1009.50 mm4.75 mm 10 - 30 15 - 35 25 - 452.36 mm
0.425 mm0.075 mm <10 <10 <10
CBR Value (Minimum) 30 25 20
Note : The material passing 425 micron (0.425 mm) sieve for all the three
gradings when tested according to IS:2720 (Part-5) shall have liquid limit
and plasticity index not more than 25 and 6 percent respectively.
7.3 Strength of sub-base :
It shall be ensured prior to actual execution that the material to be used in
the sub-base satisfies the requirements of CBR and other physical
requirements when compacted and finished.
When directed by the Engineer, this shall be verified by performing CBR
tests in the laboratory as required on specimens remoulded at field dry
density and moisture content and any other tests for the “quality” of
materials, as may be necessary.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.280C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
7.4 Construction Operations :
7.4.1 Preparation of subgrade : Immediately prior to the laying of sub-base, the
subgrade already finished to Clause 301 or 305 of MORT & H
Specification as applicable shall be prepared by removing all vegetation
and other extraneous matter, lightly sprinkled with water if necessary and
rolled with two passes of 80-100 kN smooth wheeled roller.
7.4.2 Spreading and compacting : The sub-base material of grading specified in
the contract shall be spread on the prepared subgrade with the help of a
motor grader of adequate capacity, its blade having hydraulic controls
suitable for initial adjustment and for maintaining the required slope and
grade during the operation or other means as approved by the Engineer.
When the sub-base material consists of combination of materials mentioned
in Clause 401.2.1 of MORT & H Specifications, mixing shall be done at
plant and shall be transported on site.
Manual mixing shall be permitted only where the width of laying is not
adequate for mechanical operations, as in small-sized jobs. The equipment
used for mix-in-place construction shall be a rotavator or similar approved
equipment capable of mixing the material to the desired degree. If so
desired by the Engineer, trial runs with the equipment shall be carried out
to establish its suitability for the work.
Moisture content of the loose material shall be checked in accordance with
IS:2720 (Part-2) and suitably adjusted by sprinkling additional water from
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.281C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
a truck mounted or trailer mounted water tank and suitable for applying
water uniformly and at controlled quantities to variable widths of surface
or other means approved by the Engineer so that, at the time of
compaction, it is from 1 percent above to 2 percent below the optimum
moisture content corresponding to IS:2720 (Part-8). While adding water,
due allowance shall be made for evaporation losses. After water has been
added, the material shall be processed by mechanical or other approved
means like disk horrows, rotavators until the layer is uniformly wet.
Immediately thereafter, rolling shall start. If the thickness of the
compacted layer does not exceed 100 mm, a smooth wheeled roller of 80
to 100 kN weight may be used. For a compacted single layer upto 225 mm
the compaction shall be done with the help of a vibratory roller of
minimum 80 to 100 kN static weight with plain drum or pad footdrum or
heavy pneumatic tyred roller of minimum 200 to 300 kN weight having a
minimum tyre pressure of 0.7 MN/m2 or equivalent capacity roller
capable of achieving the required compaction. Rolling shall commence at
the lower edge and proceed towards the upper edge longitudinally for
portions having unidirectional crossfall and super-elevation and shall
commence at the edges and progress towards the centre for positions
having crossfall on both sides.
Each pass of the roller shall uniformly overlap not less than one-third of
the track made in the preceding pass. During rolling, the grade and
crossfall (camber) shall be checked and any high spots or depressions,
which become apparent, corrected by removing or adding fresh material.
The speed of the roller shall not exceed 5 km. per hour.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.282C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Rolling shall be continued till the density achieved is at least 98 percent of
the maximum dry density for the material determined as per IS:2720
(Part-8). The surface of any layer of material on completion of compaction
shall be well closed, free from movement under compaction equipment and
from compaction planes, ridges, cracks or loose material. All loose,
segregated or otherwise defective areas shall be made good to the full
thickness of layer and re-compacted.
7.5 Surface Finish and Quality Control of Work :
The surface finish of construction shall conform to the requirements of
Clause 902 of MORT & H Specifications.
Control on the quality of materials and works shall be exercised by the
Engineer in accordance with Section 900.
7.6 Arrangements for Traffic :
During the period of construction, arrangement of traffic shall be
maintained in accordance with Clause 112 of MORT & H Specifications.
7.7 Measurement for Payment :
Granular sub-base shall be measured as finished work in position in cubic
metres.
The protection of edges of granular sub-base extended over the full
formation as shown in the drawing shall be considered incidental to the
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.283C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
work of providing granular sub-base and as such no extra payment shall be
made for the same.
7.8 Rate :
The contract unit rate for granular sub-base shall be payment in full for
carrying out the required operations including full compensation for :
1) Making arrangements for traffic to Clause 112 of MORT & H
Specifications except for initial treatment to verges, shoulders and
construction of diversions;
2) Furnishing all materials to be incorporated in the work including all
royalties, fees, rents where necessary and all leads and lifts;
3) All labour, tools, equipment and incidentals to complete the work to
the specifications;
4) Carrying out the work in part widths of road where directed; and
5) Carrying out the required tests for quality control.
8.0 Remaking of road surface excavated for water supply and sewerage
line inclusive one no. of oversize metal layer and two nos. of size
metal layer, supplying and spreading of blindage and watering and
rolling with vibro roller etc. complete.
8.1 As per description given in Schedule “A” (Bill of Quantities) and/or as
directed by Engineer.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.284C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
9.0 WET MIX MACADAM SUB-BASE/BASE :
9.1 SCOPE :
This work shall consist of laying and compacting clean, crushed, graded
aggregate and granular material, premixed with water, to a dense mass on
a prepared subgrade/sub-base/base or existing pavement as the case may
be in accordance with the requirements of the specification. The
material shall be laid in one or more layers as necessary to lines, grades
and cross sections shown on the approved drawings or as directed by the
Engineer.
The thickness of a single compacted Wet Mix Macadam layer shall not
be less than 75mm. When vibrating or other approved types of
compacting equipment are used, the compacted depth of a single layer of
the sub-base course may be increased to 200mm upon approval of the
Engineer.
9.2 MATERIALS :
9.2.1 Physical requirement :
Coarse aggregates shall be crushed stone. If crushed gravel/shingle is
used not less than 90 percent by weight of the gravel/shingle pieces
retained on 4.75 mm sieve shall have at least two fractured faces. The
aggregates shall conform to the physical requirements set forth in the
following Table-1.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.285C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
TABLE - 1PHYSICAL REQUIREMENTS OF COARSE AGGREGATES
FOR WET MIX MACADAM FOR BASE COURSES
SL.NO.
TEST TEST METHOD REQUIREMENTS
1. *Loss Angles AbrasionValue or
IS : 2386 (Part-IV) 40% Maximum
*Aggregate impact value IS : 2386 (Part-IV) orIS : 5640
30% Maximum
2. Combined flakiness andElongation indices (total)
IS : 2386 (Part-I) 30% Maximum**
* Aggregates may satisfy requirements of either of the two tests.** To determine this combined proportion, the flaky stone from a
representative sample should first be separated out. Flakinessindex is weight of flaky stone metal divided by weight of stonesample. Only the elongated particles be separated out from theremaining (non-flaky) stone metal. Elongation index is weight ofelongated particles divided by total non-flaky particles. The valueof flakiness index and elongation index so found are added up.
9.2.2 Grading requirements :
The aggregates shall conform to the grading given below :
TABLE - 2GRADING REQUIREMENTS OF AGGREGATES FOR WET
MIX MACADAM
SIEVE DESIGNATION PERCENT PASSING53 mm 10045 mm 95 - 100
26.5 mm -22.4 mm 60 - 8011.2 mm 40 - 604.75 mm 25 - 402.36 mm 15 - 30
600 microns 8 - 2275 microns 0 - 8
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Materials finer than 425 micron shall have Plasticity Index (PI) not
exceeding 6.
The final gradation approved within these limits shall be well graded
from coarse to fine and shall not vary from the low limit on one sieve to
the high limit on the adjacent sieve or vice versa.
9.2.3 Construction operation :
9.2.3.1 Preparation of Base :
Clause 404.3.1 of MORT & H shall apply.
9.2.3.2 Provisional of lateral confinement of aggregates :
While constructing wet mix macadam, arrangement shall be made for the
lateral confinement of wet mix. This shall be done by laying materials in
adjoining shoulders along with that the wet mix macadam layer and
following the sequence of operations described in Clause 407.4.1 of
MORT & H.
9.2.3.3 Preparation of mix :
Wet-mix macadam shall be prepared in an approved mixing plant of
suitable capacity having provision for controlled addition of water and
forced/positive mixing arrangement like pugmill or pan type mixer of
concrete batching plant. For small quantity of wet mix work, the
Engineer may permit the mixing to be done in concrete mixers.
Optimum moisture for mixing shall be determined in accordance with
IS:2720 (Part-8) after replacing the aggregate fraction retained on 22.4
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mm sieve with material of 4.75 mm to 22.4 mm size. While adding
water, due allowance should be made for evaporation losses. However,
at the time of compaction, water in the wet mix should not vary from the
optimum value by more than agreed limits. The mixed material should
be uniformly wet and no segregation should be permitted.
9.2.3.4 Spreading of mix :
Immediately after mixing, the aggregates shall be spread uniformly and
evenly upon the prepared subgrade/sub-base/base in required quantities.
In no case should these be dumped in heaps directly on the area where
these are to be laid nor shall their hauling over a partly completed stretch
be permitted.
The mix may be spread either by a motor grader or a paver finisher. For
portions where mechanical means cannot be used, manual means as
approved by the Engineer shall be used. The motor grade shall be
capable of spreading the material uniformly all over the surface. Its blade
shall have hydraulic control suitable for initial adjustments and
maintaining the same so as to achieve the specified slope and grade.
The paver finisher shall be self propelled having the following features :
i) Moving hoppers and suitable distribution mechanism
ii) The screed shall have tamping and vibrating arrangement for
initial compaction to the layer as it is spread without rutting or
otherwise marring the surface profile.
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iii) The paver shall be equipped with necessary control mechanism so
as to ensure that the finished surface is free from surface
blemishes.
The surface of the aggregate shall be carefully checked with templates
and all high or low spots remedied by removing or adding aggregate as
may be required. The layer may be tested by depth blocks during
construction. No segregation of large and fine particles should be
allowed. The aggregates as spread should be of uniform gradation with
no pockets of fine/coarse materials.
9.2.3.5 Compaction :
After mix have been laid to the required thickness, grade and cross
fall/camber, the same shall be uniformly compacted to the full depth with
suitable roller. If the thickness of single compacted layer does not exceed
100mm, a smooth wheel roller of 80 to 100 kN weight may be used. For
a compacted single layer upto 200mm, the compaction shall be done with
the help of vibratory roller of minimum static weight of 80 to 100 kN of
equivalent capacity roller. The speed of the roller shall not exceed 5
l.m./h.
In portions having unidirectional cross fall/super elevation, rolling shall
commence from the lower edge and progress gradually towards the upper
edge. Thereafter roller should progress parallel to the centre line of the
road, uniformly overlapping each preceding track by at least one third
width until the entire surface has been rolled. Alternate strips of the
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roller shall be terminated in stops at least 1 m. away from any preceding
stop.
In portions in camber, rolling should begin at the edge with the roller
running forward and backward until the edges have been firmly
compacted. The roller shall then progress gradually towards the centre
parallel to the centre line of the road uniformly overlapping each of the
preceding track by at least one third width until the entire surface has
been rolled.
Any displacement occurring as a result of reversing of the direction of the
roller or from any other cause shall be corrected at once as specified
and/or removed the made good.
Along forms, kerbs, walls or other places not accessible to the roller, the
mixture shall be thoroughly compacted with mechanical tampers or a
plate compactor. Skin patching of an area without scarifying the surface
to permit proper bonding of the added material shall not be permitted.
Rolling should not be done when the sub-grade is soft or yielding or
when it causes a wave-like motion in the sub-base/base course or sub-
grade. If irregularities develop during rolling which exceed 12 mm when
tested with a 3 metre straight edge, the surface should be loosed and
premixed material added or removed as required before rolling again so
as to achieve a uniform surface conforming to the desired grade and cross
fall. In no case should the use of unmixed material be permitted to make
up the depressions.
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Rolling should be continued till the density achieved is at least 98% of
the maximum dry density for the material as determined by the method
outlined in IS:2720 (Part 8).
After completion, the surface of any finished layer should be well closed,
free from movement under compaction equipment or any compaction
planes, ridges, cracks and loose material. All loose, segregated or
otherwise defective areas shall be made good to the full thickness of the
layer and re-compacted.
9.2.3.6 Setting and drying :
After final compaction of wet mix macadam course, the road shall be
allowed to dry for 24 hours.
9.2.4 Opening to traffic :
Preferably no vehicular traffic of any kind should be allowed on the
finished wet-mix macadam surface till it has dried and the wearing
course laid.
9.2.5 Surface Finish and Quality Control of work :
9.2.5.1 Surface evenness :
The surface finish of construction shall conform to the requirements of
Clause 902.
9.2.5.2 Quality control :
Control of the quality of materials and work shall be exercised by the
Engineer in accordance with Section 900 of M.O.R T. & H.
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9.2.6 Rectification of Surface irregularity :
Where the traffic irregularity of the wet mix macadam course exceeds
the permissible tolerances or where the course is otherwise defective due
to sub-grade soil getting mixed with the aggregates, the full thickness of
the layer shall be scarified over the affected area, re-shaped with added
premixed material or removed and replaced with fresh premixed material
as applicable and re-compacted in accordance with Clause 406.3. The
area treated in the aforesaid manner shall not be less than 5 m. long and 2
m. wide. In no case shall depressions be filled up with unmixed and
ungraded material or fines.
9.2.7 Arrangement for traffic :
During the period of construction, arrangement of traffic shall be done as
per Clause 112.
9.2.8. Measurement for payment :
Wet mix macadam shall be measured as finished work in position in
cubic metres.
9.2.9 Rates :
The contract unit rate for wet mix macadam shall be payment in full for
carrying out the required operations including full compensation for all
components listed Clause 401.8.
10.0 PRIME COAT OVER GRANULAR BASE
10.1 SCOPE :
This work shall consist of application of a single coat of low viscosity
liquid bituminous material to a porous granular surface preparatory to the
superimposition of bituminous treatment or mix.
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10.2 MATERIALS :
10.2.1 Primer :
The choice of a bituminous primer shall depend upon the porosity
characteristics of the surface to be primed as classified in IRC : 16. These
are :
i) Surfaces of low porosity; such as wet mix macadam and water
bound macadam
ii) Surfaces of medium porosity; such as cement stabilized soil base
iii) Surfaces of high porosity; such as a gravel base.
10.2.2 Primer viscosity :
The type and viscosity of the primer shall comply with the requirements of
IS 8887, as sampled and tested for bituminous primer in accordance with
theses standards. Guidance on viscosity and rate of spray is given in Table
– 1.
TABLE - 1VISCOSITY REQUIREMENT AND QUANTITY OF LIQUID
BITUMINOUS PRIMER
Types of surface Kinematic Viscosity of
Primer at 600C
(Centistokes)
Quantity of Liquid
Bituminous Material
per 10 sq.m. (Kg.)
Low porosity 30 – 60 6 to 9
Medium porosity 70 – 140 9 to 12
High porosity 250 – 500 12 to 15
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10.2.3 Choice of primer :
The primer shall be bitumen emulsion, complying with IS 8887 of a type
and grade as specified in the contract or as directed by the Engineer. The
use of medium curing cutback as per IS 217 shall be restricted only for sites
at sub-zero temperatures or for emergency applications as directed by the
Engineer.
10.3 WEATHER AND SEASONAL LIMITATIONS :
Bituminous primer shall not be applied to a wet surface or during dust
storm or when the weather is foggy, rainy or windy or when the
temperature in the shade is less than 100C. Surfaces which are to receive
emulsion primer should be damp, but no free or standing water shall be
present.
10.4 CONSTRUCTION :
10.4.1 Equipment :
The primer distributor shall be a self- propelled or towed bitumen pressure
sprayer equipped for spraying the material uniformly at specified rates and
temperatures. Hand spraying of small areas, inaccessible to the distributor,
or in narrow strips shall be sprayed with a pressure hand sprayer, or as
directed by the Engineer.
10.4.2 Preparation of road surface :
The surface to be primed shall be prepared in accordance with Clause 501.8
and 902 of MORT & H (Fourth Revision) as appropriate. Immediately
prior to applying the primer the surface shall be carefully swept clean of
dust and loose particles, care being taken not to disturb the interlocked
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aggregate. This is best achieved when the surface layer is slightly moist
(lightly sprayed with water and the surface allowed do dry) and the surface
should be kept moist until the primer is applied.
10.4.3 Application of bituminous primer :
The viscosity and rate of application of the primer shall be as specified in
the contract, or as determined by site trials carried out as directed by the
Engineer. Where a geosynthetic is proposed for use, the requirements of
Clauses 703.3.2 & 703.4 of MORT&H specifications shall apply. The
bituminous primer shall be sprayed uniformly in accordance with Clause
501 of MORT & H specifications. The method of application of the primer
will depend on the type of equipment to be used, size of nozzles, pressure at
the spray bar and speed of forward movement. The contractor shall
demonstrate at a spraying trial, that the equipment and method to be used is
capable of producing a uniform spray, within the tolerances specified.
10.4.4 Curing of primer and opening to traffic :
A primed surface shall be allowed to cure for at least 24 hours or such other
period as is found to be necessary to allow all the volatiles to evaporate
before any subsequent surface treatment or mix is laid. Any unabsorbed
prime shall first be blotted with an application of sand, using the minimum
quality possible. A primed surfaces shall not be opened to traffic other than
that necessary to lay the next course. A very thin layer of clean sand may
be applied to the surface of the primer, to prevent the primer picking up
under the wheels of the paver and the trucks delivering bituminous material
to the paver.
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10.4.5 Tack coat :
Over the primed surface, a tack coat should be applied in accordance with
Clause 503 of MORT & H (Fourth Revision).
10.5 QUALITY CONTROL OF WORK :
For control of the quality of materials supplied and the works carried out,
the relevant provisions of Section 900 of MORT & H (Fourth Revision)
shall apply.
10.6 ARRANGEMENTS FOR TRAFFIC :
During construction operations, arrangement for traffic shall be made in
accordance with the provisions of Clause 112 of MORT & H
Specifications.
10.7 MEASUREMENT OF PAYMENT :
Prime coat shall be measured in terms of surface area of application in
square metres.
10.8 RATE :
The contract unit rate for prime coat with adjustments as described in
Clause 502.7 of MORT & H shall be payment in full for carrying out the
required operations including full compensation for all components listed in
Clause 401.8 (i) to (v) of MORT&H Specifications and as applicable to the
work specified in these specifications. Payment shall be made on the basis
of the provision of primer coat at an application of rate 0.6 kg. per square
metre, with adjustment, plus or minus, for the variation between this
amount and the actual amount approved by the Engineer after the
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preliminary trials referred to in Clause No. 502.4.3 of MORT & H.
Specification.
11.0 TACK COAT
11.1 SCOPE
This work shall consist of application of a single coat of low viscosity
liquid bituminous material to an existing road surface preparatory to the
superimposition of a bituminous mix, when specified in the contract or
instructed by the Engineer.
11.2 MATERIALS
11.2.1 Binder
The binder used for tack coat shall be a bitumen emulsion complying with
IS 8887 of a type and grade as specified in the contract or as directed by
the Engineer. The use of cutback bitumen as per IS 217 shall be restricted
only for sites at sub-zero temperatures or for emergency applications as
directed by the Engineer.
11.3 WEATHER AND SEASONAL LIMITATIONS
Bituminous material shall not be applied to a wet surface or during a dust
storm or when the weather is foggy, rainy or windy or when the
temperature in the shade is less than 100C. Where the tack coat consists of
emulsion, the surface shall be slightly damp, but not wet. Where the tack
coat is of cutback bitumen, the surface shall be dry.
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11.4 CONSTRUCTION
11.4.1 Equipment
The tack coat distributor shall be a self propelled or towed bitumen
pressure sprayer, equipped for spraying the material uniformly at a
specified rate. Hand spraying of small areas, inaccessible to the
distributor, or in narrow strips, shall be sprayed with a pressure hand
sprayer, or as directed by the Engineer.
11.4.2 Preparation of base
The surface on which the tack coat is to be applied shall be clean and free
from dust, dirt and any extraneous material, and be otherwise prepared in
accordance with the requirements of Clause 501.8 and 902 of MORT&H
specifications (Fourth Revision) as appropriate. Immediately before the
application of the tack coat, the surface shall be swept clean with a
mechanical broom, and high pressure air jet, or by other means as directed
by the Engineer.
11.4.3 Application of tack coat
The application of tack coat shall be at the rate specified in the contract,
and shall be applied uniformly. If rate of application of Tack Coat is not
specified in the contract then it shall be at the rate specified in Table – 1.
The normal range of spraying temperature for a bituminous emulsion shall
be 200C to 700C and for a cutback 500C to 800C if RC-70/ MC-70 grade is
used. Where a geosynthetic is proposed for use, the provisions of Clauses
703.3.2 and 703.4.4 of MORT & H specifications shall apply. The method
of application of the tack coat will depend on the type of equipment to be
used, size of nozzles, pressure at the spray bar, and speed of forward
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movement. The contractor shall demonstrate at a spraying trial, that the
equipment and method to be used is capable of producing a uniform spray,
within the tolerances specified.
Where the material to receive an overlay is a freshly laid bituminous layer,
that has not been subjected to traffic, or contaminated by dust, a tack coat
is not mandatory where the overlay is complete within two days.
TABLE - 1RATE OF APPLICATION OF TACK COAT
Type Surface Quality of liquidbituminous material in kg.per sq.m. area
i) Normal bituminous surfaces 0.20 to 0.25
ii) Dry and hungry bituminoussurface
0.25 to 0.30
iii) Granular surfaces treated withprimer
0.25 to 0.30
iv) Non bituminous surfacesa) Granular base (not primed) 0.35 to 0.40b) Cement concrete pavement 0.30 to 0.35
11.4.4 Curing of tack coat
The tack coat shall be left to cure until all the volatiles have evaporated
before any subsequent construction is started. No plant or vehicles shall be
allowed on the tack coat other than those essential for the construction.
11.5 QUALITY CONTROL OF WORK
For control of the quality of materials supplied and the works carried out,
the relevant provisions of Section 900 of MORT & H specifications
(Fourth Revision) shall apply.
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11.6 ARRANGEMENTS FOR TRAFFIC
During the period of construction, the arrangements for traffic shall be
made in accordance with the provisions of Clause 112 of MORT & H
specifications (Fourth Revision).
11.7 MEASUREMENT FOR PAYMENT
Tack coat shall be measured in terms of surface area of application in
square metres.
11.8 RATE
The contract unit rate for tack coat shall be payment in full for carrying out
the required operations including for all components listed in Clause 401.8
(i) to (v) of MORT & H specifications (Fourth Revision) and as applicable
to the work specified in these specifications. The rate shall cover the
provision of tack coat as per Schedule “A”.
12.0 BITUMINOUS BOUND MACADAM
Providing and laying bituminous bound macadam surface in 75 mm
thickness including supplying all materials, spreading 40 mm and 20 mm
trap metal layers, heating and spraying bitumen at the rate 250 kg./100
sq.m. and spreading 12 mm size key aggregates excluding providing and
applying tack coat at the rate of 10 kg./10 sqm. using 60-70 grade bitumen
and compaction with vibratory roller etc. complete.
12.1 GENERAL :
The work consist of supply of all materials and labour required for
providing and laying bituminous bound macadam surface for compacted
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thickness of 75 mm. This item includes preparing the existing road surface
to receive the bituminous bound macadam course i.e. application of tack
coat, spreading of 40 mm size metal layers in required thickness with
compaction with vibratory roller, spreading 20 mm thick, compaction with
vibratory roller, heating and spreading bitumen with equipment plant etc.
Spreading key aggregates 12 mm chips and final compaction with
vibratory roller etc. complete. The work shall be finished in accordance
with the requirements of this specification in close conformity with grades,
lines, cross sections and thickness as per approved drawing or as directed
by the Engineer.
12.2 MATERIALS :
12.2.1 Bitumen :
The bitumen shall be paving bitumen or suitable penetration grade within
the range S-35 to S-65 or A-35 to A-65 (30/40 to 60/70) as per Indian
Standard Specifications for “paving bitumen” IS:73-1962. The actual
grade of bitumen to be used shall be decided by the Engineer, appropriate
to the region, traffic, rainfall and other environmental conditions.
12.3 AGGREGATES :
The aggregate shall comprise of 40 mm size & broken stone satisfying
standard specification clause Rd.22.3.2, Page 201 of edition 1979, 20 mm
size & 12 mm size crush aggregate satisfying standard specifications
clause Rd.41.3.2, Page 216 of edition 1979 for respective size of crush
metal. The aggregate shall be free from disintegrated pieces, organic or
other deleterious set for in table 500/4 of Ministry of Surface Transport's
specifications for Road & Bridges edition June 1992.
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12.4 PROPORTIONING OF MATERIALS :
The quantities of aggregates and bitumen required for the work of 75mm
compacted bituminous bound macadam is detailed below :
a) 40mm size hand broken metal 9.00 cmt. per 100sq.mt.
b) 20mm size crushed metal 1.50 cmt. per 100 sq.mt.
c) 12mm size crushed metal 1.80 cmt. per 100 sq.mt.
d) Bitumen 250 kg. per 100 sq.mt.
12.5 PREPARATION OF BASE :
The road surface shall be swept clean of all dirt, dust and other loose and
foreign matter. The work shall be performed on such widths and lengths as
directed by Engineer and may require scarifying of existing layer, filling of
pot holes etc. The edge lines may be marked with stakes (formed of
murum or metal 25 cm 30 cm width).
Tack Coat
The tack coat over cleaned surface shall be applied with mechanical
sprayer.
12.6 SPREADING AND COMPACTION :
12.6.1 Spreading of 40mm size metal :
40mm size hand broken metal shall be spread evenly at the rate of 9 Cum
per 100 sq.mt. of area so as to form uniform layer over the width of road
specified on plan any foreign matter, organic matter, dust grades etc. shall
be remove immediately. The sections shall be checked with camber board,
straight edge batten etc. Any irregularities shall be made good by adding
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aggregates in case of depressions and removing aggregates from high
spots.
Compacting of 40mm size metal :
The surface of 40mm metal layer after brought to necessary grades and
sections shall be rolled with the use of 8 to 10 tons power roller. Rolling
shall commence from the edges and progress towards the centre
longitudinally except on super elevated portion it shall progress from the
lower to upper edge parallel to the center line of pavement. When the roller
has passed over the whole area as prepared once, any high spots or
depressions which become apparent shall be corrected by removing or
adding aggregates. The rolling shall then continued till the entire surface
has been rolled to desired compaction such that there is no crushing of
aggregates and all roller marks have been eliminated. The each pass of
roller shall uniformly overlap not less than one third of the track made in
the preceding pass.
12.6.2 Spreading of 20mm size metal :
20mm size crushed metal shall be evenly spread at the rate of 1.5 cubic
metres per 100 sq.mt. of area over the 40mm size hand broken metal
compacted.
12.6.3 Compaction after spreading of 20mm size metal :
The surface of 20mm metal layer after brought to necessary grades and
sections shall be rolled with the use of 8 to 10 tons vibro roller. Rolling
shall commence from the edges and progress towards the centre
longitudinally except on super edge parallel to centre line of pavement.
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When the roller has passed over the whole area as prepared once, any high
spots or depressions which become apparent shall be corrected by
removing or adding aggregate. The rolling shall then continued till the
entire surface has been rolled to desired compaction such that there is no
crushing of aggregates and all roller marks have been eliminated. The
each pass of roller shall uniformly overlap not less than one-third of the
track made in the preceding pass.
12.6.4 Bitumen application :
Bitumen to be used shall be got approved from Engineer. Bitumen of I.S.
grade S-35 needs heating to a temperature range between 177 degrees to
191 degrees. Bitumen other than grade I.S. S-35 shall be heated to a
temperature appropriate to that grade. Bitumen shall be applied through a
pressure sprayer uniformly at the rate of 250 kg. per 100 sq.mt. To ensure
correct application of bitumen being sprayed, known dimensioned area be
checked for use of bitumen and accordingly dosage may be increased or
decreased as the case may be.
12.6.5 Key aggregates :
On completion of bitumen application, 12mm size key aggregates shall be
spread immediately at a uniform rate of 1.8 Cum per 100 sq.mt. of area
when entire surface is in hot condition. Brooms shall be used to ensure
even distribution of key aggregate.
12.6.6 Final compaction :
Immediately after spreading of bituminous and spreading of aggregates
shall be spread immediately at a uniform rate of 1.8 cum per 100 s.mt. of
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area when entire surface is in not condition. Brooms shall be used to
ensure even distribution of key aggregates.
12.6.7 Final Compaction :
Immediately after spraying of bitumen and spraying of key aggregates the
surface shall be rolled with a power roller to obtain full compaction and to
force the blindage of key aggregates in to the interstices of the course
aggregate. The rolling shall continue till the asphalted surface hardens and
key aggregates stop moving under power roller.
12.7 SURFACE FINISH AND QUALITY CONTROL :
The surface finish shall conform to requirements of clause 902 of
specification for Roads and Bridges by Ministry of Road Transport &
Highways. Quality control test and their frequencies shall be as per table
900-3 of specification for Roads and Bridges by Ministry of Road
Transport & Highways.
12.8 ARRANGEMENT OF TRAFFIC :
During the period of execution, arrangement of traffic shall be carried out
according to the Clause 112 (excluding past para of 112.6) of specification
for Roads and Bridges by Ministry of Road Transport & Highways.
12.9 ITEM TO INCLUDE :
1) Labour and materials required for preparing surface.
2) Supplying and spreading and compaction of 40mm hand broken size
metal and 20mm crushed metal.
3) Supplying, heating and spraying of bitumen.
4) Supplying and spreading and compaction of 12mm crushed metal.
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12.10 MODE OF MEASUREMENT AND PAYMENT :
The contract unit rate for finished work of bituminous bound macadam is
in full for carrying out all operations. The finished work shall be measured
in square metres.
13.0 MIXED SEAL SURFACING :
13.1 SCOPE :
13.1.1 This work shall consist of the preparation, laying and compaction of a
close-graded premix surfacing material of 20 mm thickness composed of
graded aggregates premixed with a bituminous binder on a previously
prepared surface, in accordance with the requirements of these
Specifications, to serve as a wearing course.
13.1.2 Close graded premix surfacing shall be of Type A or Type B as specified in
the contract documents.
13.2 MATERIALS :
13.2.1 Binder :
The binder shall be a penetration bitumen of a suitable grade as specified
in the Contract, or as directed by the Engineer, and satisfying the
requirements of IS:73.
13.2.2 Coarse aggregates :
The aggregate shall conform to Clause 504.2.2 of MORT&H
Specifications except that the water absorption shall be limited to a
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maximum of 1 per cent. The Polished Stone Value, as measured by the
test in BS 812 - (Part 114), shall not be less than 55.
13.2.3 Fine aggregates :
The fine aggregates shall consist of crushed rock quarry sands, natural
gravel/sand or a mixture of both. These shall be clean, hard, durable,
uncoated, mineral particles, dry and free from injurious, soft or flaky
particles and organic or deleterious substances.
13.2.4 Aggregates gradation :
The coarse and fine aggregates shall be so graded or combined as to
conform to one of the gradings shown in Table, as specified in the contract.
AGGREGATE GRADATION
IS Sieve
Designation
Cumulative per cent by weight
of total aggregate passing
Type A Type B
13.2 mm - 100
11.2 mm 100 88 – 100
5.6 mm 52 – 88 31 – 52
2.8 mm 14 – 38 5 – 25
0.090 mm 0 – 5 0 – 5
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13.2.5 Proportioning of Materials :
The total quantity of aggregates used for Type A or B close-graded premix
surfacing shall be 0.27 cubic metre per 10 square metres area. The
quantity of binder used for premixing in terms of straight-run bitumen shall
be 22.0 kg. and 19.0 kg. per 10 square metres area for Type A and Type B
surfacing respectively.
13.3 CONSTRUCTION OPERATIONS :
13.3.1 Weather and seasonal limitations: Laying shall be suspended while
free-standing water is present on the surface to be covered, or during rain,
fog and dust storms. After rain, the bituminous surface, prime or tack
coat, shall be blown off with a high pressure air jet to remove excess
moisture, or the surface left to dry before laying shall start. Laying of
bituminous mixtures shall not be carried out when the air temperature at
the surface on which it is to be laid is below 10°C or when the wind
speed at any temperature exceeds 40 km/h at 2m height unless
specifically approved by the Engineer.
13.3.2 Preparation of surface: The underlying surface on which the bituminous
surfacing is to be laid shall be prepared, shaped and conditioned to the
specified lines, grade and cross-section in accordance with Clause 501 of
MORT&H specifications. A prime coat where needed shall be applied in
accordance with Clause 502 of MORT&H Specifications as directed by
the Engineer.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.308C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
TABLE 500-23
QUANTITIES OF MATERIALS REQUIRED FOR 10 m' OF
ROAD SURFACE FOR 20mm THICK OPEN-GRADED PREMIX
SURFACING USING PENETRATION BITUMEN OR CUTBACK
Aggregates
a) Nominal Stone size 13.2 mm (passing 22.4 mm
sieve and retained on 11.2 mm sieve)
0.18 m3
b) Nominal Stone size 11.2 mm (passing 13.2 mm
sieve and retained on 5.6 mm sieve)
0.09 m3
Total 0.27 m3
Binder (quantities in terms of straight run bitumen)
a) For 0.18 m3 of 13.2 mm nominal size stone at 52
kg. bitumen per m3
9.5 Kg.
b) For 0.09 m3 of 11.2 mm nominal size stone at 56
kg. bitumen per m3
5.1 Kg.
Total 14.6 Kg.
13.3.3 Tack coat : A tack coat complying with Clause 503 of MORT&H
Specifications, shall be applied over the base preparatory to laying of the
surfacing.
13.3.4 Preparation of premix : Hot mix plant of appropriate capacity and type
shall be used for the preparation of the mix material. The hot mix plant
shall have separate dryer arrangement for heating aggregate.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.309C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
The temperature of the binder at the time of mixing shall be in the range
of 150°C to 163°C and that of the aggregate in the range of 155°C to
163°C provided that the difference in temperature between the binder and
aggregate at no time exceeds 14°C. Mixing shall be thorough to ensure
that a homogeneous mixture is obtained in which all particles of the
aggregates are coated uniformly and the discharge temperature of mix
shall be between 130°C and 160°C.
The mix shall be immediately transported from the mixer to the point of
use in suitable vehicles or hand barrows. The vehicles employed for
transport shall be clean and the mix being transported covered in transit if
so directed by the Engineer.
13.3.5 Spreading and rolling : The pre mixed material shall be spread by
suitable means to the desired thickness, grades and cross-full (camber)
making due allowance for any extra quantity required to fill up
depressions, if any. The cross-fall should be checked by means of camber
boards and irregularities levelled out. Excessive use of blades or rakes
should be avoided. As soon as sufficient length of bituminous material
has been laid, rolling shall commence with 8 – 10 tonne rollers, - smooth
wheel tandem type, or other approved equipment. Rolling shall begin at
the edge and progress toward the centre longitudinally, except that on
super elevated and uni-directional cambered portions, it shall progress
from the lower to upper edge parallel to the centre line of the pavement.
When the roller has passed over the whole area once, any high spots or
depressions, which become apparent, shall be corrected by removing or
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.310C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
adding premixed materials. Rolling shall then be continued until the
entire surface has been rolled and all the roller marks eliminated. In each
pass of the roller the preceding track shall be overlapped uniformly by at
least 1/3 width. The roller wheels shall be kept damp to prevent the
premix from adhering to the wheels. In no case shall fuel / lubricating oil
be used for this purpose. Excess use of water for this purpose shall also
be avoided.
Rollers shall not stand on newly laid material. Rolling operations shall be
completed in every respect before the temperature of the mix falls below
100° C. Joints along and transverse to the surfacing laid and compacted
earlier shall be cut vertically to their full depth so as to expose fresh
surface which shall be painted with a thin coat of appropriate binder
before the new mix is placed against it.
13.4 OPENING TO TRAFFIC :
Traffic may be allowed after completion of the final rolling when the mix
has cooled down to the surrounding temperature. Excessive traffic speeds
should not be permitted.
13.5 SURFACE FINISH AND QUALITY CONTROL OF WORK :
The surface finish of construction shall conform to the requirements of
clause 902 of MORT&H Specifications. For control on the quality of
materials supplied and the works carried out, the relevant provisions of
Section 900 of MORT&H Specifications shall apply.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.311C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
13.6 ARRANGEMENTS FOR TRAFFIC :
During the period of construction, arrangements for traffic shall be in
accordance with the provisions of Clause 112 of MORT&H Specifications.
13.7 MEASUREMENTS FOR PAYMENT :
Close graded premix surfacing, Type A or B shall be measured as finished
work, for the area specified to be covered, in square metres at a specified
thickness. The area will be the net area covered, and all allowances for
wastage and cutting of joints shall be deemed to be included in the rate.
13.8 RATE :
The contract unit rate for close-graded premix surfacing, Type A or B shall
be payment in full for carrying out the required operations including full
compensation for all components listed in Clause 501.8.8.2 (i) to (xi) of
MORT & H Specifications.
14.0 Disposal of surplus excavated material upto specified lead including
loading, transporting, unloading, stacking, spreading, laying in layers
and leveling etc. complete.
14.1 SCOPE OF WORK AND ITEM TO INCLUDE :
All labour, material and equipment required for loading, conveyance,
unloading, stacking or spreading the material for satisfactory completion
of the item and the incidental charges, royalties, compensation or
damages required to be paid.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.312C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
14.2 MODE OF MEASUREMENT AND PAYMENT :
The distance of conveyance shall be measured from the centre of gravity
of the bulk of excavation to the centre of gravity of the finished stacks or
spreading or disposal. This distance shall be the shortest practicable route
between the above mentioned two centres of gravity as decided by the
Engineer although the actual route taken by the Contractor to lead out the
materials may be longer. The shortest practicable route which can be
used by the Contractor or which the department could have used itself,
whichever is shorter. The extra lead is obtained by deducting the initial
free lead of 50 meters from the above. The lead shall be measured in
units of 100 m. In the former case 25 m. or above shall be taken as one
unit and less than 25 m. shall be ignored. In the latter case 50 m. or
above shall be taken as one unit and less than 50 m. shall be ignored. All
lifts are included in the rate.
The contract rate shall be for one cubic metre of materials conveyed to
the placed disposal.
15.0 PLATE LOAD TESTS
15.1 To conduct plate load test on new WBM surfaces by gravity method,
using girder loading platform, mild steel plate of required size with
minimum thickness of 25mm and applying heavy loads by sand bags, pig
iron, pig lead etc. to transfer the load to serial plate and to record the
settlement using suitable dial gauges.
The test shall be paid once at one place on one layer till the required
results are achieved irrespective of number of times test carried out.
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15.2 To conduct plate load test on new WBM surfaces, replacing loading
platform by loaded truck and jacking against reaction by using hydraulic
dial gauges to record settlement.
The test shall be paid once at one place on one layer till the required test
results are achieved irrespective of number of times test carried out.
16.0 PRECAST FACTORY MADE CONCRETE KERB STONES
16.1 Pre-cast factory made P.C.C. kerb stone of M-25 grade, minimum cement
content and water cement ratio shall be as per the approved drawing. Pre-
cast factory made R.C.C. parabolic kerb stone of M-30 grade, minimum
cement content and water cement ratio shall be as per the approved drawing
16.2 SIZES :
The sizes of kerb stones, parabolic kerb stones be as per detailed under
schedule “A”. The concrete shall consist of grade M-25/M-30 laid to the
dimensions, lines and levels shown in the drawings and well compacted
by ramming or other means. The kerb stone then the embedded into
cement concrete of grade M-20 to a minimum thickness of 150mm
including filling in joints with C.M. 1:3 and finishing with neat cement
slurry etc. complete as specified in the drawing or as directed by the
Engineer. After the line and levels have been checked to be within the
specified tolerances the haunching will be placed taking care that the line
and level of the kerbs is not displaced during the process. All straight
kerbs, circular kerbs, quadrants or other kerbs shall be laid within a
vertical or horizontal tolerance of 3mm from the true line or level and
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.314C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
painting two coats of oil paint to exposed surfaces over one coat of
primer.
16.3 MEASUREMENT FOR PAYMENT :
Measurement shall be in linear meter up to 0.01 mt. of specified size of
kerb stone provided.
17.0 PRECAST FACTORY MADE WATER TABLE :
Manufacture :
Precast factory made P.C.C. water table of M-25 grade, minimum
cement content as per IS 456-2000 for moderate exposure condition,
water cement ratio 0.45 and of specified dimension shall be manufactured
in accordance with IS 5758-1970 and generally in accordance with
specification of concrete works as specified.
17.1 SIZE :
The size of water table shall be as per drawing or as directed by Engineer.
17.2 MEASUREMENT FOR PAYMENT :
Measurement shall be in linear meter up to 0.01 mtr. of specified size of
water table provided.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.315C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
PARTICULAR SPECIFICATIONS
STORM WATER DRAIN
1.0 GENERAL :
The particular specifications are to be read in conjunction with the
specifications contained in the description of items of Schedule “A”
specification contained in “Standard Specifications” published by
Buildings and Communications Department of Maharashtra, relevant
Indian Standard Specifications. In case of conflicting provisions in
various documents (except Schedule “A”), the provisions in Particular
Specifications shall take precedence over any other documents.
2.0 CLEARING SITE :
The ground over which the Roads are to be constructed shall be cleared
from all loose, vegetation, bushes, stumps and all other objectionable
materials. Brushwood, stumps, vegetation etc. shall be cut flush with
the ground. Materials obtained from clearing site shall be disposed off
as directed.
3.0 EXCAVATION
3.1 All excavation under this contract shall be in ordinary soil which
includes, vegetable or organic soil, turf, sand, gravel, loam, clay
including marine clay, mud, peat, black cotton soil, shale, loose and
or compact murum, including back filling, watering, compacting etc.,
complete.
3.1.1 Excavation in hard murum, soft rock and hard rock shall be strata as
defined in Standard Specification of P.W.D. of Govt. of
Maharashtra.
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3.1.2 Bottom surfaces and sides of all excavations shall be trimmed and
formed to required levels, slopes etc. In addition, bottom surface
shall be watered and rammed.
3.1.3 Any soft spot or sludge shall be dug out and the cavity filled with
approved dry filling well rammed and consolidated.
3.1.4 Excavation material required for filling shall be stacked or dumped
where indicated by the Engineer. Excavated material not required
for filling and any surplus material shall be removed and spread on
the site anywhere within the premises and as directed by the
Engineer or carted away from the site as directed by the Engineer.
Dumping of this surplus material shall be in an orderly manner and
according to the levels/grades as indicated by the Engineer. The cost
of such removal and spreading shall be borne by the Contractor and
held to be included in the Contract Rates.
3.1.5 The Contractor shall, at the contract rates make provision for all
shoring, pumping, dredging, bailing out or draining water whether
subsoil or rain or other water and the excavation shall be kept free of
water while the masonry work or concrete work is in progress and
until the Engineer considers the work well set (Refer IS:3764 Safety
Code for Excavation Work). The sides of trenches shall be kept
vertical and the bottom horizontal and shall be run level throughout
our properly stepped as directed by the Engineer. The Contractor
shall erect and maintain during progress of works temporary fences
around dangerous excavations.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.317C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
3.2 EXCAVATION IN HARD ROCK
Anything that does not come out with shovels and pickaxes but
required blasting, chiseling or wedging for removal shall be treated
as rock. Boulders above 0.5 cu.m. will be treated as rock. Rubble
shall be stacked properly in heaps.
3.2.1 Excavation shall be done by wedging or chiseling and it shall be
restricted to the quantity required to minimum as shown in the
drawings, the excess quantity shall not be paid for.
3.3 MODE OF MEASUREMENT
a) Measurement shall be as per drawing and dimensions of bed
concrete net without any allowance for increase in bulk. Extra
excavation for working space, on account of slips or falls shall
not be measured, and will include cost for inserting planking,
strutting etc. and filling with soil after removal of planking.
b) Where the ground is not uniform, levels shall be taken before
the start and after completion of the work and quantity of
excavation computed from these levels,
c) Where hard soil and rock are mixed, the excavated rock shall be
stacked separately. The rock shall be measured in stacks and
measured quantities reduced by 40% (to allow for voids), to
arrive at the excavated quantity of rock. From the total
excavation, the quantity of rock excavated shall be deducted to
arrive at the quantity of hard soil.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.318C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
3.4 RATES FOR EXCAVATION SHALL INCLUDE THE
FOLLOWING PROVISIONS
a) Excavating either straight or curved or plain.
b) Bailing out all water (by pumping or other measures) which
may accumulate in excavations or sites or in trenches or in pits
from rains, springs, underground water, tidal water, broken
water mains, drains, well or any other sources.
c) Setting out works and all profiles, cross heads, boning rods,
staves as well as all tools and plant.
d) All materials and labour required for fencing in, protecting
against risk of accidents to open excavations etc. and for
providing gangways with hand rail across open trenches etc.
where necessary, during the progress of the works.
e) Watching the lighting where necessary and as directed by the
Engineer.
f) Forming ‘Tell Tales’ or ‘Dead Men’ in borrow pits and forming
steps in deep excavation for facility of recording measurements.
g) Planking and strutting of adequate strength designed by
contractor, as directed by Engineer.
h) Excavation for insertion of planking and strutting and filling
with soil after removal of planking and strutting.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.319C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
i) Removal of slips or falls in excavation.
j) Carting away spoil or falls in excavations separating useful
spoil fit for re-use in filling.
k) Cleaning of irregular pockets and dewatering in excavation.
l) Carting of all unuseful excavated stuff and disposing of as
directed by Engineer.
m) Back filling the trenches including extra excavation done for
working space, safety etc. generally by excavated material (free
from black cotton soil, clay, boulders etc.) or by selected soil
brought from out side including labour, compaction, watering
etc. complete as directed by Engineer.
4.0 Providing and laying dry trap metal soling 23 cm. thick
including hand packing with metal, rubble chips, application of
required murum/ stone dust blindage and compaction including
watering etc. complete with all leads, including necessary heavy
dewatering either mechanically or manually etc. complete.
4.1 GENERAL :
The item provides for supply of dry trap rubble soling and labour for
laying of specified type of stones in the specified thickness including
preparing the surface to proper section by scraping, dressing, watering
and compaction with vibratory roller etc. and hand packing the rubble
chips to the required line, curve, grade and section.
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4.2 DIVERSION :
When the traffic can be allowed on the road side berms without much
inconvenience to traffic or impediment to the work, this shall be
provided by the contractor at his own cost. He shall provide the
necessary barricading, warning boards and signals and watchmen by
day and red lights at night and comply with relevant provisions of
specification No. BR.1 of Red Book. Otherwise, a separate diversion
shall be provided according specification No. BR.1 of Red Book.
4.3 CONSTRUCTION :
4.3.1 Preparation of sub-grade/surface : The sub-grade/surface shall be
marked by stakes and strings for the required width for laying of the
soling in line, curve, section and grade with reference to the centre
line. The edge line stakes shall be ranged for a sufficiently long length
to obtain straight lengths and uniform curves. The contractor shall
clear off the area and do the necessary trimming or filling for laying of
the soling in line, curves, grades and section. All fillings shall be
watered and compacted to get maximum consolidation. The camber,
super elevation etc. of the sub-grade shall conform in shape to those of
the finished road surface and if in any section the road surface is loose,
undulating or uneven, the contractor shall at his own cost make it up
with suitable material, water and compact it and obtain the correct
section. Camber boards shall be used to get the required section.
4.3.2 Laying soling : The rubble collected shall be laid with the largest face
downwards and in contact with each other. The stone shall break joint
as far as possible. The full thickness of the soling shall generally be
made with one stone only.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.321C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
4.3.3 Hand-packing : As the laying of rubble advances the soling shall be
hand packed by wedging and packing with 80 mm metal collected for
the purpose in the joints of the soling and driving them by hammers in
place so as to fill the voids as completely as possible. This operation
of hand packing shall follow the rubble laying closely.
The soling shall be laid and hand packed true to grade and section and
these shall be often checked by boning rods, template boards and fish
line etc. The grades, section etc. of the soling shall correspond to those
of the surfacing coming on it.
The soling thus laid shall be finished by knocking out projecting stones
and filling depressions by chips to come up to the grade and camber.
4.4 ITEM TO INCLUDE :
1) Setting out including labour and materials like stakes, strings, fish
line, boning rods, and camber boards.
2) Diversion, barricading, signaling and controlling traffic if
necessary unless separately provided in the tender.
3) Conveying the rubble and laying the soling to the required line,
curve, grade and section including clearing, sectioning, dressing
grades and section and compacting the section, breaking rubble
and hand packing with 80 mm metal, filling the voids with rubble
chips, sand, stone screening etc.
4) All labour, materials and use of equipment and tools required for
carrying out the work satisfactorily.
4.5 MODE OF MEASUREMENT & PAYMENT :
The contract rate shall be for one cubic metre of soling laid, hand
packed and finished.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.322C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
The width and depth shall be restricted to the specified width and
depth. The dimensions shall be recorded correct upto two places of
decimals of a metre and the quantity calculated correct upto two places
of decimals of a cubic metre. No deduction shall be made for voids.
5.0 SPECIFICATIONS FOR READY MIX CONCRETE
5.1 MATERIAL
5.1.1 Cement
Cement shall be ordinary Portland Cement conforming to IS and
shall be of grade 43/53 for Ready Mix Concrete.
5.1.2 Coarse Aggregate
Coarse aggregate shall be obtained from natural sources such as
stone, gravel, etc., crushed or uncrushed or a combination thereof
from approved quarries. Aggregate shall be hard, strong, dense,
durable, clean and free from veins and adherent coatings. It shall be
free from soft, feeble, thin, elongated or laminated pieces and shall
be roughly cubical in shape. It shall consist of coarse material, most
of which is retained on 4.75 mm IS sieve.
Coarse aggregate shall not contain any harmful material such as iron,
pyrites, coal, mica, shale or similar laminated material; neither shall
it contain clay, alkali, soft fragments, sea shells, organic impurities,
etc. in such quantities that adversely affects the strength and
durability of the concrete. In addition to the above, in reinforced
concrete the aggregate shall not contain any material, which might
attack the reinforcement. The maximum quantities of deleterious
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.323C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
materials in the coarse aggregate, when determined in accordance
with IS 2386 Part I and Part II, “Method of test for aggregates for
concrete” shall not exceed the limits laid down in Table 1 of
annexure.
Aggregate crushing value, impact value, abrasion value and
soundness of aggregate shall respectively be in accordance with Para
3.3, 3.4, 3.5 and 3.6 of IS 383.
Grading of coarse aggregate shall be in conformity with the
requirements laid down in IS 383. See Table- 2 and Table 3 of
Annexure.
Source of aggregate shall be from an approved Government location.
It shall be tested prior to the approval of the Engineer from an
approved testing laboratory. In case available aggregates do not
meet certain requirements of IS 383 or any other specification,
required processing shall be carried out by the Contractor at his cost.
No extra cost towards these processes, treatment or combination of
both shall be paid. It shall be the duty or the Contractor to make sure
that aggregate material received by him is from Government
approved quarries and with fully paid royalties, taxes duties, etc. As
may be in force from time to time for respective locations.
Aggregate shall be stored in such a way that it does not get mixed
with mud, grass, vegetables and other foreign matter. The best way
is to have a hard surface platform made out of concrete, bricks or
planks. It should be to the approval of the Engineer.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.324C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Coarse aggregate shall have a minimum specific gravity of 206
(Saturated surface dry basis). Aggregate below this specific gravity
shall not be used without the special permission of the Engineer.
Once a specific source of supply of coarse aggregate is approved, the
source shall not be changed without the prior approval of the
Engineer.
5.1.3 Fine Aggregate
Nature sand deposited by stream or glacial agencies as a result of
disintegration of rock is the best form of fine aggregate. The fine
aggregate shall conform to following standards. Preferably only
river sand shall be used. However, use of crushed sand to the extent
of 20% by weight of total weight of fine aggregate may be allowed
after evaluating its quality.
i) For plain and Reinforced
concrete
IS 383 Specification for coarse and
fine aggregates from natural
sources for concrete
ii) Mortar and grout IS 2116 Specification for sand for
masonry mortars
iii) For plastering IS 1542 Specification for sand for
plaster (Class A Grading)
Stone crushed granular well graded sand free of dust confirming to
IS shall be approved to the extent of 20% by weight of total weight
of fine aggregates after evaluating is quality, if specific request is
made by Contractor. Contractor shall be responsible to obtain non
flaky, angular, dust free sand at his cost.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.325C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Sand shall be hard, durable, clean and free from adherent coatings
and organic matter and shall not contain any appreciable amount of
clay. Sand shall not contain harmful impurities such as iron, pyrites,
coal particles, lignite, mica shale or similar laminated material,
alkali, and organic impurities in such form or quantities as to affect
the strength or durability of concrete or mortar. Also it should not
contain any material liable to attack the steel reinforcement.
When tested as per IS 2386 part I and Part II, fine aggregate shall not
exceed permissible quantities of deleterious materials as given in
Table 1 of Annexure.
Fine aggregate shall be thoroughly washed at site with clean fresh
water such that the percentage of all deleterious material is within the
permissible limits laid down.
Grading of fine aggregate shall conform to IS and shall fall within
limits of one of the four zones given in Table 4 of IS 383 and of
Annexure.
Damp and moist sand increases the volume and is called bulking.
Due allowance is to be made while preparing the mixes based on
volume measurements. It shall be determined as per IS 2386 part III
Appendix A. For rough guidance, Table 5 of Annexure gives the
relation between moisture content and percentage of bulking.
Aggregate shall be stored in such a way that it does not get mixed
with mud, grass, vegetables and other foreign matter. The best way
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.326C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
is to have a hard surface platform made out of concrete, bricks or
planks. It should be to the approval of the Engineer.
5.1.4 Water
Water used for mixing and curing shall be Potable conforming to IS,
clean, reasonably clear and free from objectionable quantities of silt,
oils, alkalis, acids, salts so as not to weaken mortar, or concrete or
cause efflorescence or attack the steel in RCC while curing. It shall
be free of elements, which significantly affects the hydration reaction
or otherwise interferes with hardening of concrete during curing, or
those elements which produce objectionable stains or deposits.
Potable water is generally satisfactory but it shall be tested prior to
use in the works.
Water tested shall be in accordance with IS 3025. Maximum
permissible limits of deleterious materials in water; as given in IS
456 are reproduced for ready reference in Table 6 of annexure.
The PH value of water shall not be less than 6 and more than 7.
Water storage tanks shall be such as to prevent any deleterious
materials getting mixed with it.
5.1.5 Batching of Concrete ingredients :
For all structural concreting, only Ready Mixed Concrete (RMC)
manufactured at site, weigh batching plant or obtained from
approved R.M.C. supplying agencies is mandatory. The R.M.C.
supplying agency will supply mix design details in advance before
start of delivery.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.327C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
5.2 Transporting, placing, compacting, finishing and curing :
Transporting, placing, compacting, finishing and curing of concrete
shall be in accordance with IS:456-2000.
5.2.1 Transporting :
For all RMC concreting, the concrete after discharge from batching
plant will be loaded in transit mixers and kept continuously agitated
while mix is in transit. At destination the mix will be unloaded in to
the hoppers of concrete pump. For site made concrete suitable
prescribed methods shall be adopted.
5.2.2 Placing :
The concrete produced in RMC plant/batching plant, when
discharged from transit mixer in pump hopper shall be kept
continuously agitated and pumped to destination placing point. Site
made concrete shall be placed by approved method of placing. The
height of any single lift of concrete shall not exceed 1.5 m for walls
and 2.0 m for columns. For columns where the height of pour is
more than 2.0 m, suitable arrangement in formwork should be made
so that the vertical drop of concrete is restricted to less than 2.0 m.
Any such arrangement should be approved from the Engineer in
advance before execution.
High velocity discharge of concrete causing segregation of mix shall
be avoided. The concrete shall be placed in the forms gently and not
dropped from the height exceeding 1.5 m except in columns where
the maximum height allowed will be 2.0 m. Each batch of concrete
will be placed in layer. Each layer of concrete shall be compacted
fully before the succeeding layer is placed and separate batches shall
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.328C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
be placed and fully compacted before the layer immediately below
has taken initial set. The layers should be sufficiently shallow, to
permit stitching of two layers together by vibration.
Concreting of any portion or section of the work shall be carried out
in one continuous operation and no interruption of concreting work
will be allowed without approval of the Engineer.
Plain concrete in foundations shall be placed, in direct contact, with
the bottom of excavation, the concrete being deposited in such a
manner, as not to get mixed with the earth. The concrete placed
below the ground level shall be protected from falling earth during
and after placing. Concrete placed in ground containing deleterious
substances, shall be kept free from contact, with such ground and
with water draining there from during placing and for a period of 7
days or otherwise instructed there after. Approved means shall be
taken to protect immature concrete from damage by debris, excessive
loading, abrasion, vibrations, deleterious ground water, mixing with
earth and other materials and other influences, that may impair
strength and durability of concrete.
Before starting of work contractor will get the concrete pouring
programme and its sequence approved by Engineer to avoid cold
joints.
5.2.3 Compaction :
External, Internal (needle) and surface (screed board) vibrators of
approved make shall be used for compaction of concrete
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.329C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
a) External/internal vibrators shall be used for compaction of
concrete in foundations, columns etc. For sections such as slabs,
the concrete shall be compacted by external, internal and surface
type vibrators, depending on the thickness of layer to be
compacted. 25mm, 40mm and 60mm dia internal vibrators may
be used. The concrete shall be compacted by use of appropriate
diameter vibrator by holding the vibrator in position until :
i) Air bubbles cease to come to surface
ii) Resumption of steady frequency of vibrator after short
period of dropping the frequency, when the vibrator is first
inserted.
iii) The tone of the vibrator becomes uniform
iv) Flattened, glistening surface, with coarse aggregates
particles blended into it, appears on the surface.
After the compaction is completed, the vibrator should be
withdrawn slowly from concrete so that concrete can flow in
to the space previously occupied by the vibrator. To avoid
segregation during vibration, the vibrator shall not be
dragged through the concrete nor used to spread the
concrete. The vibrator shall be made to penetrate into layer
of fresh concrete below if any, for a depth about 150mm.
The vibrator shall be made to operate at regular pattern of
spacing. The effective radii of action will overlap,
approximately half a radius to ensure complete compaction.
v) To secure even and dense surfaces free from aggregate
pockets, vibration shall be supplemented by tamping or
rodding by hand in the corners of forms and along the form
surfaces while the concrete is plastic.
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.330C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
vi) A sufficient number of spare vibrators shall be kept readily
accessible to the place of deposition of concrete to assure
adequate vibration in case of breakdown of those in use.
25mm diameter immersion vibrators shall be used in thin
Chemical testsPhysical & chemicaltesting at external lab. &its frequency
B) Coarse Aggregate (IS383 : 1970)Gradation
Specific gravityFlakiness &elongation Index
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.368C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Sr.No.
Description Detail Information
Impact value/Crushing value/Abrasion valueSoundnessWater absorptionAlkali Aggregatereactivity test
C) Fine aggregates (IS 383:1970)GradationSpecific gravity
Determination of clay,fine silts,& fines dustFree moisture content
Soundness
Water absorption
Organic impurities
D) Admixtures (IS 9103 :1999)Whether MTC isavailable for every batch& brandDry Material contentpH value
Relative DensityCompatibilityAsh contentChloride ion contentPerformance test forslump retention &compressive strength testat 24hr. on control mix.Periodical testing atexternal lab. Forcrosscheck
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.369C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
mixesMethod of design(whether as per IS or anyother)b. Whether it is as per
requirement of clientor your own
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.370C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Sr.No.
Description Detail Information
b) Daily check onpreparation of startingslip for each of gradesbased on adjustments ofmoisture content orwater absorption (at7,11,15,19 hr.) as perschedule
c) Analysis of freshconcrete Mix as perIS 1199-1959.
d) Temperature of the freshConcrete Mix
e) Slump at the Plant
f) Check for Density foreach grade
g) Cube CompressiveStrength &AcceptabilityRecords of tests
h) Permeability apparatusi) NDT equipments & co-
relation with cubecompressive strength
j) Cement content test
k) Chemical analysis ofconcrete samples
l) Statistical analysis of testresults & modification tothe mix proportion basedon standard deviation ofplant
m) Special Precautionstakena. During Rainy season
b. During Hot season
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.371C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Sr.No.
Description Detail Information
8. Technical staff available atplant with qualification &experience
cement concrete, B.B. Masonry, plastering and refilling, fixing of
box so that the top of the box shall be 100mm above the ground
level. The necessary locking arrangement and lock to be made for
S.V. Chamber cover. The precast for RCC cover (heavy duty) shall
be tested in any approved laboratory and the results got approved
before fixing the same.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.394C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
TECHNICAL SPECIFICATIONS(SEWERAGE WORK)
I. Manufacturing of R.C.C. pipeNP2 and NP3
Pipes (NP2 or NP3 class) : Manufacturing of pipe as per IS458 with the latest amendment asper Clause 6 with amendment,casting pipe by spinning, vibratingthe concrete method.Flexible Rubber joints like pipesocket-spigot shall provided.
1) Cement : As per IS 8041, IS 8043 and IS8112 a latest version for themanufactures of concrete pipes.
2) Steel wire fabric : i) Mild steel grade-I, as perIS:432 Part-I & II structuralsteel as per IS:2062.
ii) As per IS 1566 and IS 1786and IS 226 of latestamendments.
3) Class of pipe NP2(Rubber Ring Roll on joint)
: Spigot and socket as per TableNo.9 of IS code 458 with latestamendment and design as perTable No.2 with amendments.
NP3(Rubber Ring Roll on joint)
: Spigot and socket as per TableNo.10 and 10A of I.S. code 458with latest amendment. Design asper Table 3 with amendment.Barrel thickness design should beapproved before taking work ofmanufacturing the pipe for NP3class pipes.
4) Aggregates : Aggregates used as per I.S.383latest version and as per ClauseNo.4.3 of IS 458-1988 withamendment No.2.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.395C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
5) Concrete : Pipe concrete should conformingto IS:456-1978 code of practicefor plain and RCC (fourthrevision) as per clause No.4.5 withlatest amendment.
6) Water : As per IS 456-2000.
7) Testing at factory : Contractor has to makearrangement of testing of pipe atfactory before supply at site.Sampling as per IS code as per IS458 clause 9 with latestamendment/cube test are as per IS516-1959 and IS 5816-1999 atfactory.
Test are :i) Hydrostatic test as per IS
3599-1998.ii) Three-edge bearing test as
per IS 3599-1998.iii) Permeability test as per IS
3597-1998.iv) Absorption test as per IS
3599-1998.v) Straightness test as per IS
3599-1998.
Sampling and inspection should beas per clause No.10 of 458 withamendment.
8) Marking on pipes : i) Name of manufacture withregister trademark.
ii) Class of pipeiii) Date of manufactureriv) I.S.I. mark
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.396C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
II Rubber Rings : Rubber ring chords used for pipesjoints shall conform to IS:5382-1967 with amendment. Gasketshall be made of a properlyvulcanized virgin rubbercompound of containing no scrapor reclaim.
Tests : i) Hardness Test as perIS:3400
ii) Tensile Test of Ring as perIS:3400
iii) Compression Test as perIS:3400.
iv) Accelerated ageing in air asper IS:3400.
v) Water absorption Test asper I.S.3400.
Sampling the time lapse fortesting. Marking on Rings
: As per IS code 5382 class 6 clause7 with appendix – D.
i) The manufactures nameand Trade mark if any
ii) Month and year ofmanufacturer
iii) The type follower by aword such Gas or Water orSewer depending on theapplications.
iv) ISI mark
III Manholes : As per IS:411 (Part-I) 1986 and asper drawing issued by CIDCO forexecution purpose and as directedby Engineer.
Type/spacing of manholes andconstruction of manholes
: As per CIDCO drawing andschedule of Rate.
IV Steps : As per Schedule of item anddrawing note.As per IS:5455-1969.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.397C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Load Test : One sample of step of 50 samplesmay be subjected to load test asper Appendix A
Marking : ISI markManufacture Name
V Precast Concrete Manholecover and frame
: As per Tender Schedule andDrawing and IS Code 12592-2002.
i) Grade and Type : Heavy duty HD 20 Rectangular orCircular
ii) Cement : IS:269, IS:455, IS:8043, IS:8112.iii) Aggregates : IS 383iv) Concrete : IS : 456-2000. M-30 Grade.v) Steel : As per Clause 4.4 of IS:12592.vi) Test : Load Test as per clause o.9.3 of
IS:12592. Sampling and/or testingshould be done in accordance withClause No.11 of IS:12592.
vii) Marking : ISI mark, BIS mark.
VI Laying of Sewer Line : As per Schedule of rate of Tenderand Particular Specifications andIS Code 783. Width of excavationis as per Particular Specification.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.398C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
PARTICULAR SPECIFICATIONS
(SEWERAGE WORK)
1.0 SCOPE OF WORK
This specification is intended to provide generally for the following
works viz.
a) Construction of sewer,
b) Construction of manholes on sewer,
c) Erection of ventshafts,
d) Such other work or works incidental to the construction of the sewer.
2.0 DATUM FOR LEVEL
All levels referred to in connection with these works are based on the
plane known as G.T.S.
3.0 EXCAVATION
3.1 The total excavation will be classified and paid for under two heads
only, viz. (a) General excavation to include excavation in road surfaces
of every description together with their foundation, clay, loose sand
stone, murum, boulders, sand, lime, cement masonry and all other
materials of whatever description not requiring to be blasted.
3.2 Rock excavation (Definition of Rock)
Rock excavation to compromise excavation in rock, big boulders more
than 0.5 cubic metre in volume very hard sand stone or literal concrete,
requiring to be blasted by an explosive or burst out in small pieces by
iron wedges or chisels.
3.3 Class of excavation to be determined
In case of any question arising as to the class of excavation, the
Engineer shall determine (subject to the Chief Engineer's decision in
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.399C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
case of dispute by the Contractor) under which category, and to what
extent, any particular excavation shall be classified.
3.4 Trial holes
Trial holes/pits of such sizes and depths and n such position as may be
necessary or directed by the Engineer shall be dug and subsequently
made good as may be ordered by and to the satisfaction of the Engineer.
Trial holes/pits shall be allowed for in the rates for excavation and
sufficient trial holes must be dug to accurately locate and determine the
positions of service, culverts, and obstructions in advance of the main
excavation.
In all cases the trial pits are to be excavated in accordance with the
specifications for excavation, refilling and reinstatement etc.
3.5 Excessive excavation
After excavating the sites on which the various parts of the works are to
be constructed, if it is found that due to no fault of the contractor and
part of the formation is unsuitable to provide a satisfactory foundation,
such portions shall be further excavated to such depths as the Engineer
may direct, and refilled to original formation level with mass concrete
M-10 or hardcore of quarry waste as may be directed. Payment will be
made for such additional excavation and filling at appropriate rates.
3.6 Widths of excavation for different diametre of pipes
a) The width of excavation for a built up drain or sewer unless
otherwise stated will be calculated to 250 mm on either side of the
extreme edge of the footings and the depth upto the bottom of
foundation. In case of pipes of different diametres and manholes the
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.400C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
width of the trenches will, unless otherwise directed by the Engineer
in writing, be paid for as mentioned in the table below. This width
shall include the extra width required for shoring in one or more
stages and working space required for construction brick masonry or
plastering the same for laying and jointing of the pipes or any other
purpose in connection with the excavation of the work.
b) Where rock is met with unless otherwise determined by the
Engineer, the width of the trench below the point at which the rock is
met, shall be calculated as shown in the accompanying table,
irrespective of the depth of the trench. In case of built up drains this
shall be calculated to 75 mm on either side of the extreme edge of
the footings.
c) Statement showing widths to be given for excavation for either 1.20
M. or 1.50 M. (Inside) Circular or 1.50 M. x 1.50 M. square
manholes in sewerage works.
Depth of ManholeUpto invert level
Size of excavation Remarks
1) For 1.20 M. dia. M.H.upto 2.30 M.
2.50 M. Square Without drop arrangement
For 1.50 M. dia. M.H. 3.0 M. Square -- do --For 2.30 M. to 5.00 M. 3.5 M. x 3.00 M. With drop arrangement on
both sides.
Without drop arrangement
Above 5.00 M. I - In ordinary soil3.4 M. Square 1st stage upto 5.00 M.3.0 M. Square 2nd stage below 5.0 M.
II - In trenches where rock is met with3.4 M. Square Upto the point where rock is
met with3.0 M. Square Below the point where rock
is met with
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.401C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Depth of ManholeUpto invert level
Size of excavation Remarks
B. With drop arrangement on both sides
I - In ordinary soilAcross Along3.8 M. x 3.4 M. 1st stage upto 5.00 M.3.5 M. x 3.0 M. 2nd stage below 5.0 M.II - In trenches where rock is met3.8 M. x 3.4 M. Upto the point where rock is
met with3.5 M. x 3.0 M. Below the point where rock
is met with
d) Statement showing widths to be given for excavation for 1.8 M. dia.
circular manholes and 1.50 M. scraper type manholes.
A - Without drop arrangement :
I - In ordinary soil
3.70 M. square 1st stage upto 5.0 M.
3.40 M. square 2nd stage below 5.0 M.
II - In trenches where rock is met with :
3.70 M sq. upto the point where the rock is met
with
3.40 M sq. below the point where the rock is met
with
B - With drop arrangement on both sides :
I - In ordinary soil : Across and along :
4.10 M x 3.70 M 1st stage upto 5.0 M
3.80 M x 3.4 M 2nd stage below 5.0 M
II - In trenches where rock is met with
4.10 M x 3.70 M upto the point where the rock is
met with
3.8 M x 3.4 M below the point where the rock is
met with
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.402C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Note : 1) If the drop arrangement is provided only on one side the width
given above for manholes with drop arrangement shall be
reduced by 0.2 M across the trench.
2) The size of the manhole etc. mentioned above are approximately
rounded figures. Marginal variations in the sizes of manhole
covers are acceptable.
3) Statement showing widths to be given for excavation for 1.80 M
x 2.40 M scraper type manholes.
A - Without drop arrangement
I - Ordinary soil
3.70 M x 4.30 M rectangular 1st stage below 5 M
3.4 M x 4.00 M rectangular 2nd stage below 5.0 M
II - In trenches where the rock is met with :
3.70 M x 4.30 M rectangular upto the point where
the rock is met with
3.40 M x 4.00 M rectangular below the point where
the rock is met with
B - With drop arrangement on both sides 1.80 M length
I - In ordinary soil : across and along
4.10 M x 4.30 M 1st stage below 5.0 M
3.80 M x 4.00 M 2nd stage below 5.0 M
II - Trenches where the rock is met with :
4.10 M x 4.30 M upto the point where the rock is
met with
3.80 M x 4.00 M below the point where the rock is
met with
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.403C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Statement showing the proposed widths to be given for excavation of Trenches
and paid for in Sewerage works :
Size of pipe Excavation in Ordinary soil Excavation in rockwherever it is met
withShoring in one
stage
Upto 3M
depth
Above3 M &upto 5
Mdepth
Shoring in twostage more than 5
M depth
Shoringin onestageupto 5
Mdepth
Shoring intwo stagesMore than5 M depth
150mm S.W. 0.80 M 0.90 M230mm S.W. 0.90 M 1.00 M 1.4 M upto 5 M 0.90 M 1.00 M
1.0 M below 5 M300mm S.W. 0.90 M 1.00 M 1.4 M upto 5 M 0.90 M 1.0 M
1.0 M below 5 M350mm R.C. pipe 1.30 M 1.50 M 1.8 M upto 5 M
1.5 M below 5 M 1.30 M 1.50 M1.5 M below 5 M
400mm R.C. pipe 1.40 M 1.60 M 1.9 M upto 5 M 1.40 M 1.60 M1.6 M below 5 M
450mm R.C. pipe 1.50 M 1.70 M 2.0 M upto 5 M1.7 M below 5 M 1.50 M 1.70 M1.7 M below 5 M
500mm R.C. pipe 1.50 M 1.70 M 2.0 M upto 5 M 1.50 M 1.70 M1.70 M below 5 M
600mm R.C. pipe 1.60 M 1.80 M 2.10 M upto 5 M 1.60 M 1.80 M1.80 M below 5 M
700mm R.C. pipe 1.70 M1.90 M
1.90 M 2.20 M upto 5 M1.90 M below 5 M
1.70 M 1.90 M
800mm R.C. pipe 2.00 M 2.30 M. 2.60 M upto 5 M 2.00 M 2.30 M2.30 M below 5 M
900mm R.C. pipe 2.10 M 2.40 M 2.70 M upto 5 M 2.10 M 2.40 M2.40 M below 5 M
1000mm R.C. pipe 2.20 M 2.50 M 2.80 M upto 5 M 2.20 M 2.50 M2.50 M below 5 M
1100mm R.C. pipe 2.30 M 2.60 M 2.90 M upto 5 M 2.30 M 2.60 M2.60 M below 5 M
1200mm R.C. pipe 2.40 M 2.70 M 3.00 M upto 5 M 2.40 M 2.70 M2.70 M below 5 M
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.404C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Size of pipe Excavation in Ordinary soil Excavation in rockwherever it is met
withShoring in one
stage
Upto 3M
depth
Above3 M &upto 5
Mdepth
Shoring in twostage more than 5
M depth
Shoringin onestageupto 5
Mdepth
Shoring intwo stagesMore than5 M depth
1400mm R.C. pipe 2.70 M 3.00 M 3.30 M upto 5 M 2.70 M 3.00 M3.00 M below 5 M
1600mm R.C. pipe 2.90 M 3.20 M 3.50 M upto 5 M 2.90 M 3.20 M3.20 M below 5 M
1800mm R.C. pipe 3.10 M 3.40 M 3.70 M upto 5 M 3.10 M 3.40 M3.40 M below 5 M
4.0 DEPTH OF EXCAVATION OF TRENCHES
The depth for the trenches will be calculated from the surface to the bed
of the pipes and in case when a layer of concrete/or precast blocks are
required to be placed below the pipeline, the depth of the bottom of the
concrete/or the block below the underside of the pipeline will be paid.
The depth of excavation for manhole shall be measured from the surface
of the existing ground level to the bottom of foundation.
No payment will be made for any excavation beyond this width or
depth.
5.0 MEASUREMENT LENGTH OF EXCAVATION
The lengths of excavation for trenches will be measured from and clear
of the settled width allowed for the excavation of trench from which it
starts on which it come into contact and the centre of the pipe or
masonry for which the trench has been excavated shall be considered as
the centre of such trench.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.405C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
6.0 A GRIP TO BE CUT WHERE PIPE SOCKET OCCURS
Wherever a pipe socket occurs a grip is to be cut in the bottom of the
trench or concrete bed to a depth of atleast 75 mm below the bed of the
pipe so that the pipe may have a fair bearing on its shaft and to rest upon
its socket. Such grip shall be of sufficient size in every respect to admit
the hand all around the socket in order to make the joint, and the grip
shall be maintained clear until the joint has been passed by the Engineer.
7.0 TRENCHES IN ROCKY GROUNDS
The trenches for pipe drains, if in stony or rocky ground, are to be
excavated all along to the full depth of 75 mm below the intended level
of the bed of the pipes to be laid therein, and layer of soft clean earth 75
mm thick is to be deposited for the reception of the pipes and in case
where a layer of the concrete and/or precast block is required to be
placed below the pipe line, the bottom of the excavation shall not be
higher at any point than the bottom of the concrete layer or block.
Wherever excavation is done in rock, the excavated stuff shall be
stacked separately for chiselled rock and blasted rock. The excavation
shall be paid or stack measurement with deduction of 40% for voids to
be made from the stack measurement.
8.0 CARRYING OUT EXCAVATION AND STACKING THE
EXCAVATED STUFF
a) In carrying out excavation, ground shall be broken at such places and
in such lengths as shall be sanctioned by the Engineer. Work of
excavation shall proceed in such proportion at one time as the
Engineer may direct, and no permanent works shall be begun, until
the Engineers have approve of the excavation which shall be out to a
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.406C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
sufficient depth and width to receive the permanent work and to
allow of their being sufficiently placed, built, constructed, laid or
erected. The length of trench excavated ahead of the pipe laying and
the length of trench which may remain open at one time shall at all
times be subject to the approval of the Engineer. It shall be at no
time greater than can properly be protected from caving.
b) The road metal and also the rubble packing ad khankies (if any) first
be stripped off for the whole width of the trench and for the whole
extent of the masonry or chamber required and separately deposited
in such place or places as may be determined upon by the Engineer.
In case of the metal packing or khandkies not being so deposited or
being mixed up with excavated materials and not available for
refilling and making good the excavation the cost of the new metal,
packing or khandkies required shall be charged to the Contractors.
c) The other material from the excavation shall be deposited on either
side of the trench leaving a clear berm on one side at least 40 cm
wide or at such further distance from the edges of the trench as may
be necessary to prevent the weight of materials from casting the side
of the trench to slip or fall or at such a distance and in such a manner
as to avoid covering fire hydrants sluice valves gas-syphone,
manholes covers and the like and so as to avoid abutting any wall or
structure or casing inconvenience to the public or other persons or
otherwise as the Engineer may direct.
d) In case where the Engineer decides that the width of the road or lane
where the work of excavation is to be carried out is so narrow as to
warrant stacking or excavated material away from the site of the
work the contractor shall have to remove the same if so directed
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.407C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
within a lead of 250 M. The excavated stuff shall be brought back
for refilling the trenches when required. The surplus material shall
be removed as directed. No claims for stacking the excavated stuff
away from the site of work or bringing it back for refilling trenches
shall be entertained.
9.0 FOUNDATION AND BOTTOM OF TRENCHES TO BE
SATURATED WITH WATER
All foundation and the bottom of all trenches shall be saturated with
water well rammed wherever the Engineer may consider it necessary to
do so.
10.0 EXCESS EXCAVATION DUE TO NATURE OF SUB-SOIL FOR
ADDITIONAL FOUNDATION
If in any place the Engineer may consider that on account of the nature
of sub-soil, additional foundations of concrete, rubble or otherwise are
necessary or if in any place, he may require the excavation, for any
purpose, whatsoever, to be carried deeper than shown on the plans or
described in the specification, the excavation shall be carried out as may
be ordered by the Engineer and such additional works shall be measured
and paid for to the contractors according to the rates entered in the Bill
of Quantities and Rates.
11.0 UNAUTHORISED EXCESS EXCAVATION
Where excavation are made in excess of the limits delineated on the
drawings, either by error or by accident, the voids so formed shall be
filled in with lime concrete or rubble masonry or otherwise at the
discretion and to the satisfaction of the Engineer and at the expense of
the contractors.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.408C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
12.0 FENCING/LIGHTING AND WATCHING
The contractor shall make all proper provisions for protecting the work
be fences and by watching and lighting at night, or otherwise as may be
directed by the Engineer. The posts of fencing shall be timber securely
fixed in the ground not more than 3 M. apart, and they shall not be less
than 75 mm in diametre or less than 1.2 M. above the surface of the
ground. There shall be two rails, one near the top of the posts and the
other about 450 mm above the surface of the ground and each shall be
from 50 mm to 70 mm in diametre and sufficiently long to run from post
to post, to which they shall be bound with strong rope. The method of
projecting rails beyond the posts and tying them together where they
meet will not be allowed on any account. All along the edges of the
excavated trenches a bank of earth about 1.20 M. high shall be formed
where required by the Engineer for further protection. Proper provisions
shall be made for lighting at night and watchman shall be kept to see
that this is properly done. In the event of the contractors not fully
complying with the provisions of these clause, the Engineer may, with
or without notice to the contractors, put up a fence or improve the fence
already put up or provide or improve the lighting or adopt such
measures as he may deem necessary and all the cost of such procedure
as may be adopted by the Engineer, shall be borne by the contractors.
12.1 In addition to the normal lighting arrangements, the contractor shall
provide, wherever a sewer work is in progress, battery operated blinking
lights (6 volts) in the beginning and end of a trench with a view to
provide suitable indication to the vehicular traffic. The contractor shall
also provide and display special boards painted with fluorescent paints
indicating the progress of the work along a particular road.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.409C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
13.0 MAINTENANCE OF WATER PIPES, GAS PIPES AND DRAINS,
ETC. MET IN EXCAVATION
The contractor shall, at the rates entered in the Bill of Quantities and
Rates, excavate all such works, as the Engineer may requires in order to
locate the position of water pipes, drains, sewers or any other work and
all water pipes, gas pipes, drains, sewers or other work, which may be
met up, in or about any excavation whatever, shall if the Engineer deem
it practicable be properly maintained by the contractors, and by means
of shoring, strutting, planking over, padding or otherwise as the
Engineer may direct, shall be protected by the contractors from damage
during the progress of the work or if damaged together with all matters
and things resulting from the same, shall be made good and effectually
remedied either by the contractors or by other agency, as the Engineer
may decide and wholly in either case at the expense of the contractors.
In the event of the failure on the part of the contractors to carry out to
the satisfaction of the Engineer, any of the above protective provisions
or to execute to his satisfaction of the Engineer, any of the above
protective provisions or to execute to his satisfaction such remedial
work, as he may decide that they shall do, the Engineer may, with or
without notice to the contractors, adopt such measures as he may deem
necessary at the expense and risk of the contractors. If, however, the
Engineer considers impracticable for the contractors to maintain any
such water pipes, gas pipes, drains, sewers or other works, and that
exigencieso of the work necessitate the breaking down, removal or
diversion of any such water pipes, gas pipes, drains, sewers or other
work, then, though the cost of breaking down or removing any such
trench or sewers and of providing such chutes, pumps or other
appliance, as the Engineer may direct for the raising and temporary
passage of the water or sewerage which may escape from any such
water pipes, gas pipes, drains, sewers or other work shall be borne by
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.410C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
the contractors, yet the cost of breaking down and removing any such
water pipes or gas pipes, and of rebuilding, replacing diverting or
reinstating any such water pipes, gas pipes, drains, sewers or other
works, as may be required by the Engineer shall be paid to the
contractors as provided by the contract, if done by them, or the same or
any part thereof may be carried out under the Engineer's orders by other
agency and in such cases without charge to the contractors. The
Engineer's opinion as to the amount of the charges, which under this
clause are payable to the contractors, shall be final and binding on the
contractor. It should be allowed for arbitration being non-technical
matter.
14.0 SHORING
a) Wherever shoring may deemed necessary by the Engineer the
contractor shall provide the same in the best possible manner with
the best material and to the satisfaction of the Engineer. The
contractor shall employ such kind or kinds of shoring as the Engineer
may consider the exigencies of the work to require and it is to be
distinctly understood that the work 'shoring' is to comprise all clauses
of such work and all appliances and appurtenances including polling
boards, sheet piling and runners (whether the joints be butt, groove
and tongue feather edge and groove, birds mouth and double splay,
rebated or otherwise), together with walling struts prope, point blank
shores, raking shores, blocks, wedges, iron dogs, bolts, screws, nails
and everything that may be required for due execution of the work.
b) No part of the shoring shall at any time be removed by the contractor
without obtaining permission from the Engineer. While taking out
shoring plank the hollows if any, formed must simultaneously be
filled in with soft earth well rammed with rammers and with water.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.411C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
c) Shoring left in trenches
The Engineer may order portions of shoring to be left in the trenches
at such places, where it is found absolutely necessary to do so as to
avoid any damage which may be caused to building, cables, gas-
mains, water mains, sewers etc. in close proximity of the excavation,
by pulling out the shoring from the excavations. The contractors
shall be paid at the rate inserted by them in the Schedule of Rates
and Quantities or to be decided by the Engineer as per clause of
General Conditions of Contract, only by the order of Engineer, and
they shall not claim, on any reason, whatsoever for the shoring which
may have been left in by them at their own discretion.
Any allowance for shoring left in the portions of rakers, struts, or
other timber cut off and not permanently left in the work will not be
included.
Any allowance for shoring such as plates struts or other timber cut
off and not left permanently in any position of the trench will not be
paid.
d) Steel trench sheeting
i) Where the sub-soil conditions are expected to be of a soft and
unstable character, in trench excavation the normal methods of
timbering will probably prove insufficient to avoid subsidence of
the adjoining road surface and other services. The contractor will
be held responsible for all such damages as specified elsewhere.
ii) In such circumstances, the contractor will be required to use steel
trench sheeting or sheet steel piling adequately supported by
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.412C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
timber struts walling etc. The contractor will be expected to
supply pitch, drive and subsequently remove trench sheeting or
piling in accordance with other items of the specifications and the
terms Timber or Timbering shall apply to steel trench sheeting or
sheet steel piling throughout.
e) Rates
The rates for excavation shall be held to include the cost of shoring
and no allowance of width or width beyond those already described
shall be made on account of the necessity of shoring.
f) Engineer may put up or improve shoring
In the event of the contractors not complying with the provisions of
this contract in respect of shoring, the Engineer may, with or without
notice to the contractor put up shoring or improve shoring already
put up or adopt such other measures as he may deem necessary and
all the cost of such procedures adopted by the Engineer, shall be
borne by the contractor.
15.0 LIABILITY FOR TIMBERING
a) No work done by the Engineer or his workmen for the fact that the
timbering has complied wit his specifications shall absolve the
contractor from his responsibility and he will be responsible for
making good any damage caused as a result of the timbering failing
to give proper support to the sides of the excavation.
b) The timbering to the sides of excavation for structures shall be
carried out in such a way that there is no obstruction caused to the
filling of formwork for the walls. The supporting struts and walling
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shall be removed by the contractor in stages to suit progress of
concreting.
c) If the Engineer is not satisfied that the standard of timbering is equal
to that shown on the approved drawing or that the sides of the
excavation have not been secured in a manner to render such
excavating safe for working, he may, one hour after notifying the
contractor or his representative in writing, employ his own men to
alter the timbering and the cost of such workman and materials
employed shall be paid for by the contractors.
16.0 CONTRACTOR'S RESPONSIBILITY FOR SECURE SHORING
AND OR ALL DAMAGES
The contractor will be held responsible for providing secure shoring and
for adopting every other precaution which may be necessary or proper
for protecting any building which may be damaged or be liable to
damage by the excavation of any trench or otherwise by the execution of
the work in the vicinity of such building. If the Engineer shall require
the adoption of any special or extra measures or precautions, the
contractors shall forthwith adopt and supply the same, but this provision
is not to be read or understood as in any degree of relieving the
contractors from responsibility or from liability under Clause 53 of
General Conditions of Contract, in respect of claims made against the
Corporation by for loss or damage which may be caused to any such
building by the execution of any of the works or otherwise. After the
work is completed near buildings, the contractor shall remove any
shoring and make good any cutting out or other damage that may have
been done.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.414C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
17.0 VENTILATION
The contractor shall provide adequate ventilation and efficient apparatus
to keep all excavation, trenches tunnels and headings structures, sewers
and manholes free from all gases whether generated in strata arising
from the use of explosive for blasting sewage gases or otherwise and he
shall take precautions to ascertain that they are in a safe condition before
allowing workman to proceed.
18.0 PUMPING OUT WATER
The contractors shall provide and work at their own cost all pumps
engines and machinery requisite to keep the trenches for the sewers,
drains or foundations and all other excavations clear of water, whether
sub-soil water, storm water, leakage from tanks, wells drains, sewers,
water mains, tide water etc. so that there may be no accumulations of
such water and that no setting out may be done, no masonry may be laid,
no concrete deposited, no joints made and no measurements taken in
water. The pumping shall be continued so long after execution of any
portion of work and repeated so after as the Engineer may consider as
necessary. The pumps and power applied must be such as the Engineer
may determine to be sufficient at any particular time, so he may himself
supply pumps and power at contractor's expenses, so he may stop the
work together until he is satisfied and also impose a fine upon the
contractors. The rate excavation includes pumping out any quantities of
water as mentioned above by using any number of pumps and for any
length and time singly or in combination. Nothing extra, whatsoever,
will be paid on this account during the execution of the whole work.
19.0 KEEP EXCAVATION CLEAR OF WATER
a) Where ground water is encountered or anticipated, the contractor
shall provide sufficient pumps to handle the ingress of water and
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.415C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
must provide and maintain in working order stand by pumping units
to be available and employed in the event of mechanical failure. The
contractor must also arrange for night and day manning and
operating of the pumps wherever necessary to ensure that at all times
and weather the work may proceed.
b) The contractors shall not allow any accumulation of water either
from the discharge of their dewatering pumps or their water
connection on the site of their work. If an accumulation is
unavoidable, it shall be treated with insecticides to the satisfaction of
the Engineer. In case of failures to do this on the part of the
contractors, such accumulation shall be treated by CIDCO at the cost
of contractors.
20.0 BLASTING PROCEDURE
Blasting shall not be done without the previous consent of the Engineer
and shall be restricted to the hours which he may prescribed. If, in the
opinion of the Engineer, blasting would be dangerous to persons or
adjacent structures, or is being carried on in a reckless manner, the rock
shall be excavated by other means.
21.0 STORAGE OF EXPLOSIVE
a) It shall be as per Clause 45 of General Conditions of Contract.
b) The contractor shall obtain the previous permission of the
appropriate authority for the site, manner and method of storing
explosives near the site of work. All handling of explosives
including storage, transporting shall be carried out under the rules
approved by the Explosives Department of the Government.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.416C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
c) In carrying out rock blasting the contractors shall take all necessary
precautions by the use of screens weighted down and other means for
the protection of life and property, and shall strictly comply with all
rules and regulations that may be laid down by the commissioner of
police, by the Engineer or by other regularly constituted authority
having jurisdiction relative to handling, storing and use of explosive.
d) In order to ensure the safety of surrounding property and persons, no
charge shall be used which is larger than necessary to properly start
22.0 RATES FOR EXCAVATION
a) The rates for excavation shall be held to include and cover without
extra charge all the stipulations contained in every portion of these
present with regard o setting out, provisions for the passage of traffic
and for access to premises, arrangement for the continuance of
drainage, water supply or lighting if interrupted by the work,
arrangements for the efficient protection of the life and property,
fencing, lighting, watching, shoring, pumping, shaping the trenches,
maintenance of water pipes, gas pipes, drains and other work met
with in or about the excavation, watering and ramming foundations,
temporary refilling, consolidation and subsequent re-excavation, on
account of rain, holidays or special occasions, filling in, ramming,
watering and consolidating, surplus excavated material as stipulated,
here in and all necessary matters and thing, connected with and
rendered necessary or otherwise involved by the excavation. The
rate of excavation also includes pumping out any quantity of water
from any source by using any number of pumps and for any length of
time singly or in combination. Nothing extra will be paid on this
account during the excavation of the whole work.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.417C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
b) If, in the opinion of the Engineer, the exigencies of the work require
that in any part the whole quantities of excavation shall be done upto
the full measurement paid for, the contractors shall have no claim for
extra payment on account of the allowance or concessions shall not
be applicable to any work, unless it comes completely under one of
the above descriptions to which a settled mode of measurement is
applied.
23.0 SIGHT RAILS AND BONING STAVES
23.1 In laying the pipe sewers and constructing drains, the centre for each
manhole must be marked by a peg, or otherwise, as may be determined
by the Engineer. The contractors are then to dig holes for and set up two
posts (about 100 mm x 100 mm x 1800 mm) at each manhole at nearly
equal distance from the peg and a sufficient distance therefrom to be
well clear of all intended excavation, so arranged that a sight-rail when
fixed level against the post will cross the centre of the manhole. The
posts must also be so set up that the longitudinal direction of the rail
may be as clear as possible of the direction of any of the lines of pipes or
drains converging to the manhole. If walls of buildings afford suitable
means of fixing the sight-rail, the post may, however the dispensed with.
The sight rails must not in any case be more than 30 M. apart
intermediate rails therefore be put up if necessary.
23.2 Construction of boning staves
Boning staves shall be prepared by the contractors about 75 mm by 50
mm of various lengths, each length being of a certain number of Metre
and with a fixed tee-head ad a fixed intermediate cross piece, each about
300 mm long. The top edge of the cross piece must be fixed at distance
below the top edge of this tee-head, equal to as the case may be, the out
side diametre of the pipe or thickness of the concrete bed to be laid. The
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.418C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
boning staff, must be marked on both sides to indicate its full length.
According to the circumstances of each case, a suitable length of boning
staff will be determined upon, and the reduced level of the bed of the
pipe or bottom of concrete of drain at each sight-rail added to the
selected length of boning staff, will be marked by a horizontal line on
both posts, or on walls or fences to which the sight-rail is to be fixed.
23.3 Site rails
a) The sight-rails (about 25 cm wide and 40 mm thick) is to be screwed
with the top edge against the level marks. The centre line of the pipe
sewer or the drain will be marked on the rail and this mark will
denote also the meeting point of the centre lines of any converging
drains or pipe sewers. A line drawn from the top edge one rail to the
top of edge of the next rail will be vertically parallel with the bed of
the sewer or drain and the depth of the bed of the sewer or drain at
any intermediate point may be easily determined by letting down the
selected boning staff until the tee-head comes in the line of sight
from rail to rail.
b) The posts and rails are to be perfectly square and planed smooth on
all sides and edges. The rails are to be painted white on both sides,
and the tee-heads and cross piece of the boning staves are to be
painted black.
c) If the pipes or drains converging to a manhole come in at various
levels, there must be a rail fixed for every different level. When a
rail comes within 0.60 M. of the surface of the ground, a higher
sight-rail must be fixed for use with the rail over the next point.
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d) The posts and rails must in no case be removed until the trenches is
excavated, the drains are constructed or the pipes are laid and
permission given to proceed with the filling in.
24.0 FOUNDATIONS IN SOFT GROUNDS
a) When work of constructing the sewers has to be carried out in soft
under ground strata, such as puddle etc. or in a reclaimed land, a
good foundations shall be provided for the pipes and manholes. For
the former, excavation in the trench shall be taken 75 mm deeper
than what is ordinarily required and for this depth the whole of the
trenches shall be covered with M-15 concrete slab of the required
width, reinforced with BRC fabric No. 9 or any other fabric
approved by the Engineer. The foundation concrete of the manholes
shall similarly be reinforced with the same fabric, spread to cover the
whole area of the foundation.
b) The fabric shall be suitably cut to the requirements and securely
joined together with adequate laps which should not be less than 200
mm. The fabric in the line and manholes must also be securely
jointed together. The rates in both the cases shall be held to include
all lapping, joining and also any probable wastage.
25.0 CONTRACTOR TO OBTAIN PERMISSION BEFORE LAYING
PIPES, CONCRETE OR CONSTRUCTION OF MASONRY
When any portion of the excavation shall have been carried down to the
necessary depth, the contractors shall obtain permission from the
Engineer, before commencing the laying of pipes or concrete or the
construction of masonry.
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26.0 LAYING OF PIPES
a) The pipes are to be laid with sockets facing up the gradients
beginning at the lower end. No pipe to be laid until the trench has
been excavated its required depth for a distance of 20 M in front of
the pipe to be laid. (This distance may vary as directed by the
Engineer)
b) All the pipes are to be laid perfectly true, both in line and on
gradient. The pipes in a trench shall be all laid and fitted previous to
the jointing being commenced.
c) Properly fitted temporary wooden stoppers shall be provided and
constantly used to close the ends of all incompleted pipe lines. The
stopper are only to be removed when pipes are being and jointed.
27.0 FOUNDATION FOR PIPE LAYING
27.1 Concrete bed, haunching and surround to pipes
At approximately every four pipes or 7 M whichever is less interval, the
contractors shall form a joint in the concrete bed or surround by
vertically shuttering the bed.
27.2 Bedding of Stoneware Pipe :
The bedding for stoneware pipes shall be of M-20 concrete and has the
size and shape as indicated in the plan.
27.3 Foundation for R.C. Pipes :
The foundation for R.C. Pipes drain or sewer if required shall be formed
of cradle block or full encasement of M-20 concrete of the shape and
dimensions shown on the drawings. The same should be carefully laid
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on a bed of atleast 25 mm of sand cushion to the required grade and
alignment.
28.0 ENCASING
a) If pipes are required to be wholly encased concrete in encasement the
pipes may be required to be laid in two stages or in one as may be
decide by the Engineer. When it is decided to do the work in two
stages, the work in the first stage may have to be done either (I) the
method described above for laying bed blocks for the foundation or
(ii) putting in bed concrete in such lengths as may be required by the
Engineer. After the pipes are laid and jointed on those beds and the
joints tested, the remaining work of concreting in the 2nd stage will
be allowed.
b) When it is decided to do the work of encasing in one stage only pipes
shall be laid on bricks or stone chips to the required level and joint.
After the joints are tested the work of concreting will be done.
The contractor shall be not entitled to any extra payment in either
case. The contractor shall prepare the necessary form work for the
encasement as required by the Engineer.
After the pipes are jointed, a period of atleast 24 hours must elapse,
before the top concrete over the pipes are laid.
c) While encasing of R.C. Pipes of NP 3 class, a clear open space of 25
mm all around shall be left in the encasement at each joint for
flexibility without any extra cost.
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29.0 JOINTING OF PIPES
29.1 Jointing of stones ware pipes :
a) All the pipe joints shall be caulked with tarred gasket (prepared
ready for use before being brought on the work ) in one length for
each joint and sufficiently long to entirely surround the spigot end of
the pipe the gasket to be driven as far as possible by means of a
suitable instrument. After the pipes are thoroughly cleaned and
moistened, mixture of one part of cement and one part of clean fine
sand tempered with just sufficient water have a consistency of semi-
dry condition should be forced into the joints and well rammed with
caulking tools the whole space around the spigot between it and the
socket is united full, and the joints shall be finished off with a
splayed fillet sloping at 45 degrees to the side of the pipe. The shaft
or a pipe entering or leaving a manhole shall have splayed fitlet of
neat cement laid around the same extending on the outside plastering
of the manhole 75 mm beyond the outside of the pipe and 75 mm
beyond the outside plastering of the manhole. Such fillets shall be
deemed to be included in the rates for pipe laid complete.
b) Great care must be taken after the joints are made that the pipes be
not moved or shaken before the cement has thoroughly set.
c) The rate for providing, laying and jointing of S.W. or R.C. pipes
shall also include the cost of plugging up the mouths of these pipes
with brick in cement mortar 1:6 with cement plaster 1:3 wherever
directed by the Engineer.
29.2 Jointing concrete Pipes
a) Each concrete pipe with the rubber ring accurately positioned on the
spigot shall be pushed well home into the socket of the previously
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laid pipe by means of uniformly applied pressure with the aid of a
jack or similar appliance.
b) Concrete pipes of the spigot and socket type with roll on rubber rings
shall be used, and the manufacturer’s instructions shall be deemed to
form a part of this specification.
c) Rubber rings shall be lubricated before making the joint and the
lubricant shall only be soft soap water or an approved lubricant
supplied by the manufacturer.
d) In case of R.C. pipe entering or leaving a manhole a flexible joint
may be provided atleast within 0.60 M from the outer end of the
manhole.
e) A drop in water level of not more than 50 mm in one hour shall be
permitted, in case of hydraulic test of manhole.
30.0 ALL WORKS TO BE WATER TIGHT
a) The drains, manholes and all joints of pipes must be made
thoroughly sound and water tight and any joint which may be proved
to be leaky at any time during the progress of works or during the
contractors subsequent period of maintenance shall be immediately
made sound by the contractors at their own expense. The
contractors, when required by the Engineer shall at their own cost
prove all works to be water tight by filling it with water to such
height as the Engineer may determine. Any additional precautionary
measures or appliances that may be found necessary to ensure the
water tightness of the manholes, flush stains, disc plugs in junctions
and the joints of pipes shall be adopted by the contractor without
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extra charges, the responsibility of making them when completely
water tight resting upon the contractor.
b) Immediately after the test with the double disc or cylinder as
mentioned in Clause No. 41.0 has been completed and any defect
hereby disclosed have been made good the contractor shall prove the
joints of the stretch of the under ground pipe whether of stoneware,
cast iron or R..C. pipes, to be water tight by filling in pipes with
water before filling in the trenches to the level of 1.5 M above the
top of the highest pipe in the stretch and heading the water up for the
period of one hour or such further time as the Engineer may direct.
The apparatus used for the purpose of testing shall be approved by
the Engineer. The contractor, if required by the Engineer, shall
pump the excavation dry and keep it so during the period of testing.
No test applied to part of a stretch when adding water from a
measuring vessel at regular 10 minutes interval, and noting the
quantity required to maintain the original water level. For the
purpose of this test the average quantity added should not excess 1
litre / hour / 100 linear metres /10 mm of nominal internal diameter).
Any leakage including excessive sweating which cause a drop in the
test water level will be visible and the defective part of the work
should be removed and made good.
c) In the case of cast iron rising mains, they shall be tested for a safe
pressure as directed by the Engineer.
The manholes when they have been raised above the highest subsoil
water level expected in the monsoon shall similarly tested for water
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tightness as for the pipe lines. The procedure for this shall be as
follows.
The mouths of all pipes entering the manholes shall be suitably
plugged with brick, or wooden any other type of plug. The manhole
under test shall then be filled with water upto the general subsoil
water level and observed for a period of one hour. If the level dose
not drop by more than 50 mm in one hour, it shall be assumed that
the manhole is tight.
During the period of the test the out side trench shall be kept free
from any accumulation of subsoil water. In case of a drop of more
than 50 mm in the water level, the contractor shall note the places
from where the leakage is taking places and take step to stop the
leakage.
31.0 INSPECTION OF THE JOINTS
After the joints of any pipes in underground works have thoroughly set
the Engineer (or any person whom he may appoint) may inspect the
joints and if he has any doubt as to their soundness he may required the
contractor to cut open and clean away the cement or lead as the case
may be of any joint, that he may select and to make good the same at
their expense provided that unless defect to be found, they shall not be
required to open more than one joint in 20 M of pipe though if the defect
be found the Engineer may direct them to open as many joints as be may
seem necessary.
32.0 CLEANING OF THE PIPES
a) As soon as a stretch of pipes whether of stoneware or cast iron or
R.C. pipes has been laid complete from manhole, the contractor shall
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run through the pipes both backwards and forwards a double disc or
solid or closed cylinder 75 mm less in diameter than the internal
diameter of the pipes. The open end of an incomplete stretch of pipe
line shall be securely closed as may be directed by the Engineer to
prevent entry of mud or silt etc.
b) If, as a result of the removal of the obstruction, the Engineer
considers that damages may have been caused to the pipe he shall be
entitled to order the length to be retested at the expense of the
Contractor. Should such retest prove unsatisfactory, the Contractor
shall, at his own expense, amend the work and carry out such further
tests as are required by the Engineer.
c) If shall also be ascertained by the contractors that each stretch from
manhole to manhole is absolute clear and without any obstruction
visual examination of the interior of the pipe line suitably
enlightened by projected sunlight or otherwise.
33.0 FRACTURE OF PIPES
a) In the event of pipes being fractured after being to all appearances
properly laid whether due to imperfect loads having being found or
the material for refilling having being improperly selected or to any
other causes, the contractor in every instance will be held responsible
and will be called upon to replace the defective pipes at his own cost,
if such defect appears before the expiration of the period of
maintenance.
b) Any pipe of length of pipe found to be defective shall be
immediately removed and replaced at the contractors expense, and
leakage joints shall be remade, the inspections tests shall then be
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repeated as often as necessary, until the whole line under inspection
or test is accepted by the Engineer.
34.0 ALL WORKS TO BE CLEARED, CLEAN AND PERFECT
a) The contractor shall after completion or whenever required by the
Engineer, prove all pipes and fittings to be clear, clean and perfect,
and for this purpose shall, at their own expense and in the presence
of the Engineer, or his appointee provide suitable instruments and
appliances and pass them through the pipes and shall if required,
throw in water and show that it passed freely through every portion
of the work. Brick, mortar and rubbish shall not be allowed to fall in
into the manholes or sewer lines while fixing or if allowed shall be
removed by the contractor at their own expense.
b) The contractors to clean and use existing pipes met with
The contractors are if and when required, to take up any existing
pipes that be met with a clean and prepare them for reuse for such
work they will be paid at the contact rates for excavation and filling,
such excavation will be measured 0.90 M wide for 225 mm to 450
mm pipes, 0.60 M wider for smaller pipes and only in case to the
depth of pipes bed. The filling consolidation etc., shall be done as
described for new rocks and under the same conditions in every
respect.
35.0 MEASUREMENT OF PIPES
a) All pipes be measured according to the works actually done by them,
and no allowances will be made for any waste in cutting to the exact
length required. An exception to this will be made only in the case
of short branches of 100 mm dia stoneware pipes, which be treated in
the manner hereafter described with regard to fittings. The
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contractor shall be under obligation to use the pieces or part of the
pieces out of from 100 mm stoneware pipes, if it be deemed by the
Engineer practicable to do so and no further payment shall be made
for the same to the contractor. A socket attached to a straight pipe
will not be measured, but a spigot end of a straight pipe whether such
end be free for entering into a socket will be measured to its full
length. Pieces of cut pipe not used in the work will become the
property of the contractors except pieces of 100 mm dia stoneware
pipes, for which they have been or may be paid direct. When a cast
iron pipe may have necessary been cut for the exigencies of the
work, the contractors will be given credit for the piece not used in
work at the rate at which they are charged by the corporation
provided that the cuttings have been properly done and the portion
used in the work be sound.
b) A bend, junction, or any separate piece of fitting which may have
necessarily been cut for the exigencies of the work will be taken into
account as if whole, provided that the cutting has been done properly
and that the portion used in the work is sound. This clause shall not
apply to a straight pipe under any circumstances except only to 100
dia stoneware pipes as hereinbefore described. In measuring the
lengths of pipes laid, deduction shall be made for the lengths of
channels between the inside face of the walls of the manholes.
c) The cost of every joint between metal pipes or fittings and stoneware
pipes or sockets or masonry shall be held to be included in the rate
entered in the Bill of quantities and rates for the metal pieces
connected with the stoneware pipe, socket or with the masonry.
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36.0 MANHOLES/CHAMBERS
a) The manholes/chambers on the sewers shall be constructed in the
form and of the dimensions shown on the drawings. The depth of
the manholes/chambers shall be measured from the top of cover to
the invert level of the manholes.
b) The manholes/chambers shall be constructed at places shown in the
drawings of wherever directed by the Engineer. Type designs for the
manholes are shown on the drawings but the actual dimensions shall
in each case be determined by the Engineer as the circumstances may
require.
36.1 Construction of brick masonry manholes
The walls of the manholes shall be built in brickwork in cement mortar
and wall and the cap is plastered both from inside and outside with
cement plaster 1:1. In the case of conical manholes, the walls shall be
brought up to within 475 mm of the road surface over which 30 mm
thick concrete cap of M-15 furncated conical shape as shown in the
drawing and is cast in situ and shall be covered over with a cast iron
frame and cover or cast iron plate with a cast iron frame and cover as
may be in each case be required by the Engineer. Whether rectangular
manholes are to be constructed the brick walls shall be brought up to
with 100 mm to 150 mm as required, of the road surface and shall at
this depth be covered over with a reinforced cement concrete slab with
an opening of the site and in the position as directed by the Engineer.
The opening shall be formed by means of joists of sizes as shown on
drawings, resting on the side walls and embedded in the slab. On these
joists as support wall of brick in cement shall be erected and brought
upto within 475 mm of the road surface where they shall be covered
with cast iron frame and cover etc. as described above. The work shall
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be properly added and the courses brought up in regular and uniform
manner.
37.0 RATE OF MANHOLE
The rate to be quoted in the bill of quantities and the rate for the
manholes shall include complete structure, concrete cap, plastered with
cement both inside and outside, bottom concrete and channel or channel
with the C.I. frame and cover C.I. sheets, etc. everything complete as
type design drawing including 3” x 3” (75 mm x 75 mm) vata all round
the extended wall at its junction with the hedding and including cutting
the pipes flush with the inside plaster of the wall of flush without
excavation and rubble soling if required 150 m dia, vertical pipe 150
mm dia, S.W. double tee unction 150 mm dia S.W. right angled bend,
etc or branch connection will be paid for separately.
38.0 GUIDELINES FOR CONSTRUCTION OF ADDITIONAL
MANHOLES
Additional manholes is constructed on the sewer line so as to facilitate:-
1. Cleaning the body of the sewer if the length between the manhole is
more than 30 M (100 feet)
2. To eliminate the body connection by constructing the manhole at the
above place so as to eliminate frequent chokes.
3. The purpose of constructing additional manhole is to facilitate
cleaning of the manhole and remove the silt upto the invert level and
to facilitate removing silt from the body of the sewer by manually or
by operating winching machines or to facilitate passing disc or
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operating acquitator or compressor or jetting machines or by any
other mechanical means.
To serve the above purpose, manholes should be constructed right upon
the invert level of the sewer. For this purpose excavation is to be done
upto the foundation level by the side of the pipe or avoid sewer without
damaging the pipe or ovoid sewer.
In pipe sewer sufficient bedding of concrete should be placed and walls
should be constructed of the standard thickness on the foundation upto
the top of road level as per standard design of circular manholes. In
ovoid sewer walls should be constructed upto the top of the arch and
concrete beams should be provided above the ovoid sewer in a
rectangular shape, so that the weight of masonry above does not fall on
the arch of ovoid sewer, and walls should be constructed upto road level
as per standard design of a rectangular manhole (including steps). After
all, the plaster work is done and frame and covers are fixed above usual
0.30 M ( 1.’0”) thick concrete block. The top of the pipe or the ovoid
sewer should be broken. This should be done by person standing top of
the road level, by using long crow bars by heavy weight fixed at the
bottom or by some other mechanical device. As getting inside the
manhole and breaking with sledge hammer or chisel may cause sudden
raise in level of water or poisonous gas may com out suddenly and may
endanger the lift of the workman.
After sufficiently big manhole is made in the arch of pipe, four
manholes should be kept open in the stretch where manhole is to be
constructed, two on upstream side and two on downstream side.
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The manhole covers should be kept open for an hour and tests are
carried out viz. Davy’s safety lamp, lead acetate paper test and candle
test. After the tests are successful another workman should get down in
the newly constructed manhole preferably when the channel condition is
seen on the manhole upstream or downstream side. He should apply
coconut oil all over body and after tying rope around his waist and the
other end held by another workman at the top the work man should get
down the manhole and chisel the pipe ends or ovoid arches ends so that
the same is in flush with the wall of the manhole. Plaster in cement
mortar 1:1 or if a big gap is there, concrete should be placed over
exposed surface. (1 : 11/2:3 c.c.)
The manhole should then be cleared of all debris etc. and should be
thoroughly cleaned and handed over to CIDCO, if the manholes are
constructed above main sewer, it should be shown to the Engineer,
before handing over to the CIDCO.
No utility service should be allowed to remain inside the manhole. Care
should be taken to shift the same outside manhole.
Steps should be provide on the side or place where there are no
connections.
After completing the work, the same should be handed over to CIDCO
for maintenance. A copy of the memo acknowledging the taking over
should be handed over to the respective superintending Engineer
(Construction).
38.1 Drop Arrangement
The rate of providing 150 mm, 230 mm dia vertical drop arrangement
0.60 M high in manholes with drop arrangement will include :
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1. i) Providing 150 mm, 230 mm, 300 mm dia S.W. pipe of
required length embedded in the masonry of the manholes
at the upper and lower ends of the drop arrangement.
ii) Providing and fixing 1 No. 150 mm, 230 mm or 300 mm
S.W. right angled bend and 1 No. 150 mm x 150 mm x
150 mm, 230 mm x 230 mm x 230 mm or 300 mm x 300
mm x 300 mm S.W. double tee junction including cutting
the ends of required and jointing and filletting as specified.
iii) ½ brick thick 1:2 brick masonry encasement all around
with extra brick work below the bend upto the excavation
level of manhole and that in the tapeing portion of the
manhole including curing and finishing smooth with
cement plaster 20 mm thick 1:1.
iv) Plugging the open mouths of the double tee junctions and
house connection pipes where directed so as to make them
water tight.
2. The rate for extra each meter height of 150 M 230 mm, 300 mm,
vertical drop arrangement shall include the following :
i) providing 150 mm, 230 mm, 300 mm S.W. pipes
including cutting, jointing, filletting etc. all complete.
ii) ½ brick thick 1:2 brick masonry encasement all round
including curing and finishing smooth the exposed surface
with cement plaster 20 mm thick 1:1.
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3. For the payment of the items of vertical drop arrangement the
height will be measured from the invert of the right angled bend
to the invert of the sewer or house connection that is being
dropped 600 mm height being paid under the item of ‘Providing
arrangement and the remaining height under the item of Extra per
Metre height of drop arrangement.
4. In case of drop arrangement above 300 mm dia, the class of R.C.
pipe used shall be NP 2 class. It shall consist of right angled
bend of required diameter and double ‘T’ junction. It will be
surrounded by ½ brick thick masonry (1:2) encasement all round
with extra brick work below etc. as mentioned above.
39.0 FLOORS AND HALF CHANNEL PIPES
The floors shall consist of cement concrete. Salt glazed or concrete of
R.C. half channel pipes of the required size and curves shall be laid and
bedded in cement on the concrete base to the same line and fall as
sewers unless otherwise directed. Both sides of the channel pipes shall
be benched up in concrete and rendered in cement mortar 20 mm thick
and formed to a slope of not less than 1 in 12 to the channel.
40.0 STEPS
Where the depth of the invert exceeds 0.20 M below the surface of the
ground, cast iron steps weighing not less than 5.44 kg. And of approved
pattern shall be built at every four courses or 40 cm intervals in concrete
manhole with such additional hand irons as may be necessary for safety.
The first step shall be provided at 0.6 M below the road surface or top of
manhole cover.
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41.0 SAFETY CHAINS
Safety chains shall be made of alluminium alloy as approved by the
Engineer.
42.0 LADDERS
Except where otherwise specified ladders shall be of alluminium alloy
of approved design and manufacture.
The ladder rings shall be at 300 mm centres and the stringers 400 mm
apart strong support stays shall be provided on both sides of the ladder
at not more than 2.5 M centres.
Pipes entering and leaving manhole :
Whenever a pipe enters or leaves, manholes, bricks on edge laid around
the upper half of the pipe so as to form an arch. All round the pipe,
there shall be a joint of cement mortar 13 mm thick between it and the
bricks or cement concrete. The ends of all pipes shall be properly built
in and neatly finished of with cement mortar. The pipe projections are
to be cut so that the ends are flush with plastered surface.
Vent shafts
Vent shafts are to be provided at the heads of all sewers and also where
as shown on the drawings or as directed by the Engineer. The height
and the material, whether galvanished sheet iron or cast iron or R.C.
shall be decided by the Engineer.
43.0 NEAT CEMENT
In using neat cement it shall be carefully moistened with little water as
may serve to bring it to the required consistency. Only so much as can
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be used quickly shall be mixed at one time, and no cement after it has
begun to set shall be allowed to be worked up again, but shall be
rejected and removed from the works.
44.0 CONCRETE SHINGLES
The whole of the shingle for concrete shall be obtained from the bed
bank of river. It shall be free from shells and well washed, clear from
earth and every other impurity.
45.0 MATERIALS
a) Cement
All cement for use on the works except otherwise stated shall be the
standard portland cement manufactured in India and shall conform to the
I.S. 269 latest version. It shall be of make and quality approved by the
Engineer.
The cement shall be stored in weather proof godown or cement soils
specially constructed for the purpose of such a manner as a to prevent
deterioration due to moisture or intrusion of foreign matter. The
weather proof godown shall have a solid impervious floor raised 300mm
above the general ground level so that the cement stored thereon shall
not come in direct contact with the sub-soil moisture. The passages and
the general construction shall be such that it affords full protection from
weather effects. Large stocks of cement shall not be kept at the works
but only sufficient quantities should be kept to maintain continuity of
the work.
Storage of cement
If cement is supplied in bags a suitable weighing scale shall be provided
and shall required by the Engineer be used for checking the weight of
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every bag at the Contractor’s expense. Bags under weight by more than
2 per cent of the nominal weight shall be rejected and removed from the
site.
No cement that has been stored for more than 90 days ordinarily be
allowed to be used on the works. Cement stored for longer period than
90 days shall be used on work only with the specific written permission
of the Engineer who shall ascertain its quality after due testing in the
laboratory before giving such permission. All expenses in connection
with the test shall be borne by the contractors.
For testing the quality of cement, samples shall be taken from every
consignment arrived at the site of work at the option of the Engineer.
The contractors shall afford every facility to the Engineer for inspection
and sampling the cement. The cement godown shall be so arranged by
the contractors that each consignment could be stacked separately and in
such a manner so as to allow counting bags in each row with case. The
test results shall, ordinarily, be available within a week of sampling and
the contractor shall not use by any part of the consignment until the
results of the tests are received and found satisfactory. Should,
however, the use of such cement becomes imperative before the test
results are received, the contractors may do so entirely at their own risk
and cost and the whole of such work carried out by them is liable for
rejection, if the tests results are found unsatisfactory. Any consignment
failing to meet the requirements of I.S. shall be rejected and shall be
removed from the work site within 48 hours of the intimation from the
Engineer. The decision of the Engineer in this respect shall be final and
binding on the contractors.
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The charges in connection with the testing of cement such as transport
of samples, testing fees, etc. shall be borne by the contractors.
The cement used in any type of concrete shall always be measured by
weight and one cubic metre shall be taken as weighing 1440 kgs (Table-
30 of A.C.C. Hand Book)
b) Aggregates
All the aggregates shall confirm to the latest I.S. 383. The aggregate
shall consist of naturally occurring sand and gravel or stone crushed or
uncrushed or a combination thereof. They are classified broadly under
two categories, viz (i) Sand of fine aggregates and (ii) coarse,
aggregates, depending upon their size. The fine aggregates are those
which pass through I.S. sieve No.480. And the coarse aggregate are
those which retained on I.S. sieve 480.
i) Storage of Aggregate : The fine and coarse aggregates shall be
stored separately and in such a manner that segregation of the
various sized particle shall not occur, the stock shall be formed on
a platform of weal concrete timber or similar approved hard
standing and aggregates shall be kept clean and free from foreign
substances.
ii) Aggregates shall not be unloaded on to roadways or pathways the
Engineer may reject any stock pile or part of a stock pile if
improper storage has, in his opinion, caused contamination with
foreign substances.
iii) Storage pipes of aggregate shall be arranged with proper drainage
and protection from rainfall in order to prevent excessive changes
in moisture content taking place during concreting.
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iv) The aggregates both fine and coarse shall be hard, strong, durable
clean, free from veins and adherant coatings. The use of flaky and
elongated pieces of aggregates shall be prohibited.
v) The aggregates shall not contain deleterious materials such as iron
pyrite, coal, mica, shale or similar laminate material, clay, alkali,
soft fragments, sea shells, organic impurities etc. in such quantity
as to affect the strength of durability of concrete or the
reinforcement embedded in such reinforced concrete.
vi) The maximum quantities of deleterious material they may be
permitted shall conform to the following limits by weight.
Deleterious substance Fine aggregates
percent by weight
Coarse aggregates
percent by weight
Uncrushed Crushed Uncrushed Crushed
1. Coal and lignite 1.00 1.00 1.00 1.00
2. Clay lumps 1.00 1.00 1.00 1.00
3. Soft fragments -- -- 3.00 --
4. Material passing through
75 microsieve
3.00 3.00 3.00 1.00
5. Shale 1.00 -- -- --
vii) The total of various deleterious materials occurring in any sample
shall, in no case, exceed 5 per cent.
viii) If the aggregate supplied in unclean, it shall be washed. If it is not
properly graded, it shall be screened by hand or by mechanical
means and the various sizes proportioned to get the required
grading.
ix) Storing of aggregate on dusty, muddy and grassy spots shall be
avoided. They shall be stored on the works in such a manner as to
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prevent intrusion of foreign matter and protected from exposure to
dust. They shall be placed in stock piles in individual units of
suitable sizes and in suitable layers to prevent segregation. They
shall not be allowed to run down slopes.
c) Sand or fine aggregates
All fine aggregates shall consist of clean, hard, strong, durable uncoated
siliceous gritty material consisting of well graded particles obtained
from rock fragment. It shall be free from clay lumps injurious amount
of dust, mica shells, soft or flaky particles, shale, alkali, organic matter
load or other deleterious substances.
i) The sand shall be taken from source approved by the Engineer.
The sand or fine aggregate shall conform to the latest I.S. No.383.
ii) If the Engineer considers it necessary, it shall be washed and/or
screened before use, at the expense of the Contractors.
iii) The sand shall have a fineness modulus of not less than 2.5 and not
more than 3.0 and the grading shall conform as far as possible to
the following analysis.
I .S. Sieve No. Percent passing
Natural sand or
crushed gravel
Crushed Stone
480 95 – 100 90 – 100
240 70 – 95 60 – 90
120 45 – 85 40 – 80
60 25 – 60 20 – 50
30 5 – 30 5 – 30
15 0 - 10 0 – 15
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iv) The specific gravity of sand shall not be less than 2.6.
v) In no case shall fine aggregate be accepted, containing more than
2% by dry weight not more than 31/2% by dry volume, not more
than 5% by dry volume of clay, loam or silt. If any sample of fine
aggregate shown more than 5% of clay, loam, silt in one hour’s
settlement after shaking in excess of water, the lot represented by
the sample shall be rejected.
vi) The following two field tests are recommended for ascertaining the
percentage of clay lumps and impervious organic material and the
contractors shall carry out the same if the Engineer deems
necessary.
1. Test for determining silt in sand
Fill a calibrated tumbler with sand to half its volume and water
there to until the tumbler is three quarters full. Shake up the
mixture vigorously and allow it to settle for about an hour. The
volume of silt visible on top of the sand shall be measure. If the
volume of the silt standing over the sand exceeds 5% of total
volume of sand. The same shall be rejected.
2. Colorometric test for organic impurities
The sample of sand shall be mixed with equal volume of 3%
solution (about one ounce, in a quarter of water) of caustic
soda/sodium hydrauxide taken in a plain glass and the mixture
shall be allowed to stand for 24 hours. The liquid standing
above the sand shall not be darker than lights straw (pale
yellow) colour. If the colour is marked yellow or brown, the
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test would indicate presence of organic material in excessive
amount.
In case suitable sand is not available in adequate quantities
within a reasonable and economical limit, the contractor may be
allowed to use the crushed or pulverised stone or gravel either
alone or mixed within natural sand in parts. The stone or gravel
shall be clean sharp and free from dust etc. and shall conform
to the latest I.S. 383.
The percentage of crushed stone to be mixed with sand shall be
such as to obtain in fineness modulus of the blended sand
within the limits specified above and/or as approved by the
Engineer after laboratory test.
d) Coarse aggregates
All coarse aggregates used in concrete works shall consist of crushed
rock gravel or other approved inert material.
i) Broken or crushed rock from sound blue basalt or black trap free
from zeolite or other common impurities shall be used in the
concrete as coarse aggregate. The particles of aggregate shall be
clean, hard, tough or elongated pieces. The particles of aggregate
shall be clean, hard, tough durable, free from deleterious substance
and shall contain no soft, flat or elongated pieces. The course
aggregate shall have specific gravity not less than 2.6 and the water
absorption measured after being immersed for 24 hours in water
shall not be more than 6% by weight. The maximum percentage of
deleterious materials in the coarse aggregate shall not exceed 5%
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by weight in the aggregate when tested in conformity with
I.S.No.383.
ii) The nominal size if the coarse aggregate for reinforced concrete
work shall be 20mm. Larger coarse aggregate upto 40mm size
may be used if approved by the Engineer, in plain concrete work.
The maximum size of coarse aggregate shall be as large as possible
within the limits specified but in no case shall be greater than one
quarter of the minimum thickness of the member, provided that the
concrete can be placed in form work without difficulty so as to
surround all reinforcement thoroughly and to fill the corners of the
form work. The minimum size of coarse aggregate shall be, as
mentioned earlier, such as to retain most of the material (90% -
95%) on I.S. Sieve No.480.
iii) The aggregate shall be screened and, if necessary, blended to give
the required grading when tested in the laboratory at Contractors
cost by means of standard mesh sieve, the grading shall fall within
the following limits.
Sieve Size Percentage retain by weight
Plain C.C. R.C.C.
40 mm -- --
25 mm 10 to 15 --
20 mm 35 to 40 15 to 0
10 mm 75 to 80 100 to 80
No.480 98 to 100 100 to 95
The percentage given above are for guidance and the Engineer
reserves the right to modify the same to any other lower or higher
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value if considered necessary by him. In consolance with the
requirements of the work.
iv) In the event of undesirable segregation occurring in coarse
aggregates, the contractors shall separate the coarse aggregates in
two or more suitable fraction as directed by the Engineer, who shall
set up the required limit of each such fraction. The grading so
specified shall be such as to give a dense, water tight concrete of
specified proportion and strength and required consistency.
v) The Engineer shall have the right and authority to carry out routine
control tests and analysis of the broken rock at any stage of the
work processing and/or concreting operation and the contractors
shall give all necessary facilities in respect of such testing. The
sampling and testing shall be carried out as per Standard I.S.
practice entirely at the cost of the contractor.
e) Water
The water used for the preparation of concrete, for washing sand etc.
and for curing shall be clean and free from objectionable quantities of
silt, organic material, acid, alkali, salts, oil and other deleterious
impurities and it shall be obtained from the sources approved by the
Engineer. Potable water shall generally be found fit for preparation of
concrete. The quantity of water to be added shall generally be properly
measured and controlled.
f) Water cement ratio
Suitable water cement ratios for the different mixes and used shall be
determined in consultation with the Engineer and they shall generally
not be exceeding 0.5 (i.e. 50% by weight), the exact values being fixed
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after taking into account all relevant factors such as strength required,
weather condition, water absorbed by material, work ability and slump
required consistent with the work requirements, methods of compaction
etc.
45.1 CONCRETE
All cement concrete, whether used in R.C.C. work or plain concrete
work shall M-15, M-20 and M-25 as per latest I.S. code.
45.2 CONTROL AND TESTING OF CONCRETE
Following tests shall be carried out at the site whenever required by the
Engineer in accordance with I.S. 516 (latest).
a) Works Tests – 7 days and 28 days compressive strength test.
b) Consistency Test
c) Moisture contents in aggregates
d) Unit weight of concrete
a) Work Tests
During concreting operation, samples of concrete as placed in the work
shall be taken every day and a set of six cubes of cylinder shall be made
therefrom for being tested for their compressive strength, the
consistency (slump) test shall also be made and slump required.
All concrete cubes or cylinders shall be tested for compressive strength
as specified under I.S. 456 and 516 at the CIDCO laboratory generally
as per specifications under the latest I.S. 456 and 516. The above
specification cover concrete mixes of grades M-15 and above.
Ordinarily it is not necessary to test the compressive strength of mix of
grade M-15 at it is generally used for non-structural purposes. However,
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where the mix M-15 is used extensively on works (i.e. more than 75%
cu.mt. of concrete is to be placed at one time in any work), it shall be
tested in the same manner as other grades of concrete used for structural
purposes. The minimum strength of various grade of concrete both at
the age of 7 days and 28 days are as per I.S. specifications.
In the case of concrete of mix M-15 and above, the Engineer may not
insist on the testing of concrete if the quantity of concrete to be laid on
any particular day is less than 10 cu.m. If, however, the quantity excess
10 cu.m. test specimens must invariably, be taken and sent to the
CIDCO laboratory for testing.
Specimen shall be made for every sample and three of them tested for 7
days strength. As mentioned earlier, the 28 days strength of concrete
shall alone form the criteria for acceptance or rejection of the concrete
samples shall be tested both for 7 days strength as well as 28 days
strength at the start of the work and this shall be continued until the
Engineer is satisfied that a proper relation between the 7 days
compressive strength and 28 days compressive strength is established, in
which case he may decide to relax the frequency of testing the concrete
cubes for the 28 days compressive strength.
If the average of strength of the specimen tested at the age of 7 or 28
days is not less than the strength specified in I.S. specifications, the tests
shall be considered satisfactory, subject to the condition that only one
out of three consecutive test may give a value less than the specified
strength but not less than 90% of the specified strength. If the tests are
unsatisfactory, the Contractors shall take immediate steps to carry out
remedial measured as may be directed by the Engineer in respect in
respect of such works entirely at the risk and cost of the contractors.
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Failure of a sample in test may entail partial or whole demolition of such
work, heavy penalties, black-listing of the contractors concerned and/or
such other similar steps. The results of the tests conducted by CIDCO
laboratory shall be taken as final and binding on the contractors. In
case of any disputes, the decision of the Chief Engineer shall be binding
on the contractors.
A record showing the location of test specimen and daily progress of the
work done shall be maintained by the Engineer and shall be
countersigned by the Contractors or their representatives. In case record
maintained by the Engineer is not signed by the Contractors or their
representative the record kept by the Engineer shall be considered as
correct and binding on the contractors. In case of any dispute the
decision of the Chief Engineer shall be binding on the contractors.
The CIDCO Material Testing Laboratory is at present situated at
Sanpada. The Contractors shall deliver the specimen for testing at this
laboratory at their own cost in their own moulds. The contractors shall
pay usual testing fees for the tests carried out in the Corporation
laboratory. This fees may vary from year to year, as sanctioned by the
competent authority.
b) Consistency-Slump Test
The workability of concrete shall be checked at frequent intervals. The
slump test shall be carried out in accordance with the standard method
given under the I.S. specifications mentioned above. The slump shall be
as small as practicable, consistent with the efficient working and
compacting of concrete. The slump shall not exceed 64mm, but the
Engineer may, under exceptional conditions permit greater slump upto a
limit of 150mm.
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The standard consistency test shall be applied every time at each mixture
when test cubes are taken for the works compressive strength test.
c) Moisture Contents in the aggregates
The moisture contents in the aggregate shall be determined in the field
in accordance with the latest I.S.No.2386 (part-III) Method of Test for
aggregates for concrete.
d) Unit weight of concrete
It shall be determined by passing placing representative samples of
concrete in unit measure capacity and vibrating it externally by small
vibrator or hand compacting to represent actual placing condition. The
top of the concrete shall then be made truly flush with the top of the
mole and the weight of the concrete per cu.m. determined after curing
and drying. The weight of dry concrete shall be between 2400 to 2625
kg./cu.m.
A complete record regarding various tests carried out at site and in the
laboratory shall be kept by the Engineer. The contractor shall provide at
their own cost all facility for labour, material, transport etc. required for
the proper execution of the above test.
Any concrete which does not comply with the above requirement shall
be liable for rejection by the Engineer.
Gauge Boxes
Gauge boxes approved type shall be used for measuring sand and coarse
aggregate in required proportion whenever concrete is allowed to be
prepared by mixing the aggregate on volumeteric basis. Such boxes
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shall be of seasoned timber or steel and shall be of such size and shape
and shall be used in such a manner as to enable the proportion of the
material to be checked readily. The cement used in concrete is however
shall not be used by measuring it is gauge boxes, but it shall be
measured by weight, whatever may be the type of concrete.
45.3 STORAGE OF MATERIAL
Cement, fine and coarse shall be stored separately at the site of work in
such a manner as to prevent any deterioration of contamination or
admixture of foreign materials. Any material which has been damaged
or is considered defective by the Engineer shall not be used on the works
and shall be removed immediately from the site of works.
45.4 MANUFACTURE AND PLACEMENT OF CONCRETE
a) Batching
Whether controlled or ordinary concrete is to be mixed, the quantity of
cement shall be determined by weight. If the mixers weight per bag is to
be used, the same shall be verified by weighing separately a reasonable
number of bags.
Whenever direct use of bagged cement is allowed, one jute bag of
cement shall be considered to contain 50 kg of net weight of cement.
This shall, however, be verified at site by weighing for which the
contractors shall provide an accurate weighing apparatus on work sites.
Having once decided the mix, the Engineer may permit further mixing
of the aggregate to be done on volumetric basis for a particular batch or
stock of aggregate which has been used in the design of a mix.
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.450C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
The water shall be either measured by volume in calibarated tanks or
weighed.
The volumetric measurement gauge boxes of approved type as described
earlier shall be used for measuring the fine and coarse aggregate in
required proportion.
b) Mixing of Concrete – Trial Mixes
i) Before concreting commences, the Contractor shall, at his own
expense, make trial mixes to determine the mix proportions
required to produce the strength specified for each class of concrete
and for each degree of workability required.
Only materials which the Contractor intends to used for concreting
on the works shall be used in preparing these mixes.
ii) The workability of each trial mix shall be recorded.
iii) The concrete shall be mixed in a mechanical and/or weigh batch
mixer of adequate capacity. The ingredients shall be added to each
batch of mix by weight, volume or both as the case may be so as to
ensure accurate proportioning. Water for each batch of concrete
shall be measured in a standard container so as to ensure the same
amount of water being used each time and to during the following
mixer charging operation. The mixing of each batch shall be done
for a period of not less than two minutes or shall continue until
there is a uniform distribution of materials, having the mass of
uniform colour and consistency. Every care shall be taken to
ensure that there is not segregation while unloading the mixture.
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iv) Mixing shall be done as near the place of placement as possible and
adequate shed shall be constructed over the mixer to protect the
discharged concrete from the effect of direct sun rays. Small
additional amount of water, if necessary, shall be allowed to be
added to the mixer to compensate for any anticipated evaporation
losses during transport.
v) The quantity of water to be added shall be sufficient to allow a
workable mix being made, tamped and virated into all part of the
mould and between the reinforcement.
46.0 DEFECTIVE CONCRETE
The defective concrete shall be cut out and the work reconstructed with
fresh concrete of required quality in the presence of the Engineer. The
concrete thus cut out shall not be reused under any circumstances.
Should any concrete become permanently damaged due to cracking or
broken or damaged from whatever cause or should any concrete be
found defective in quality due to honey combing or bad workmanship, it
shall be removed forthwith and replaced by concrete of required quality
at the cost of the contractors to the satisfaction of the Engineer.
47.0 CONSTRUCTION JOINTS
a) Construction joint shall be of an approved shape and shall be vertical
or horizontal as required except that in inclined or curved member
the joint shall be at right angle to the axis of the member. The joints
shall be formed only in placed approved by the Engineer.
b) Construction joints shall be provided in the positions described on
the drawings or elsewhere and where not so described shall be in
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accordance with the following. A joint shall be formed horizontally
at the beams meeting at the head of column.
A joints shall be formed in the rib of a large tee beams and all beams
and 25mm below the soffit of the slab. Concrete in a hunch or a
splay on a beam or a brace and in the head of column.
Where one or more beams meet, shall be placed without joint at the
same time as that in the beams or brace. Concrete in the splay at the
junction of a wall and slab shall be placed without a joint, at the
same time as that in the slab. Concrete in a beam shall be placed
throughout without a joint, but vertical and at the middle of the span.
c) Main construction joints are to be keyed by the used of batterns
placed in the concrete and subsequently removed
Before placing new concrete against concrete that has already set or
hardened, the face of the old concrete shall be cleaned and
roughened and scum and loose aggregate removed therefrom leaving
a surface of clean exposed aggregate. Immediately before placing
the new concrete the face shall be thoroughly wetted and a coating of
net cement ground applied there to. The new concrete shall be well
rammed against the prepared face before the grout sets.
d) Construction joints in the floor and walls of water retaining
structures are to be formed as specified for other joints and in
additions and approved water stop shall be used. Stop shall be
rubber of P.V.C. not less than 150mm wide and 10mm thick with
concrete in an approved manner and joints in the water stop are to be
bounded/welded together for the full width of the strip.
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48.0 PERMANENT JOINTS
a) Expansion joints, contraction joints or other permanent structure
joints shall be approved in the position and of the form as detailed in
drawing and fully described in the Bill of Quantities.
b) Expansion and contraction joints shall be formed by casting the
concrete against the joining material. The material shall be lightly
but securely fixed to the shuttering forming the joint and the concrete
bonded to the material. During re-fixing shutters and preparing for
the second pour of concrete, all necessary precautions must be taken
to protect the jointing material. The concrete on the second pour
shall be thoroughly compacted against the material, care being taken
with the compacting vibrators and tools to avoid damage to the
material.
c) The sealing of expansion, contraction joints etc. shall be effected by
forming a trangular revete, central over the jointing material. The
jointing material shall be neatly cut back, where necessary to the rear
of the rebate. The rebate shall be primed and sealed with the
approved compound and the face of the sealer pointed or trimmed to
a near straight edged line.
d) Lead transfer joints shall incorporate dowel and/or link bars in the
positions and forms indicated on the drawings. On half of the dowel
or link bar shall be firmly cast and bounded into the concrete. The
second part of the bar cased in the second concrete pour shall be
wrapped with paper fitted with a cardboard cylinder or painted with
an approved bitumen paint to prevent the establishment of any bond.
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49.0 EXPANSION JOINTING MATERIAL
Expansion jointing material shall be supplied in the required thickness
and width required and no multi layer joints will be permitted. The
material shall comprise at an approved cellular material with a high
degree of recovery after crushing and the material shall be thoroughly
impregnated with a suitable preservative.
50.0 FORM WORK
a) Material
All form work for concrete works shall be made either of planed and
matched timber or M.S. plates. The timber for the form work shall
be hard wood dry and well seasoned. It shall not be so dry as to
absorb water from concrete nor shall it be so green as to shrink after
erection. When steel plates are used for forms, the plates shall be
free from wrinkles, dents, lumps or other imperfections. The timber
boards or steel plates shall have sufficient thickness to withstand the
construction loads and the pressure exerted by the wet concrete as
well as vibration during placing of concrete. Normally the thickness
shall not be less than 38mm for timber and 18 gauge 18 M.S. Plates.
However, in case where depth of concrete to be poured in the
formwork is small, the thickness of timber planks may be reduced in
consultation with the Engineer.
b) All forms shall conform to the shape, lines, dimensions as shown on
the plans of the concrete members. The form works shall include all
wedging, bracing, tierod, clamps, stop of boards and other devices
necessary to mould the concrete to the desired shape. The formwork
shall be so constructed as to remain sufficiently rigid during the
placing and compacting of the concrete and shall with-stand the
necessary pressure, ramming and vibration without any deflection
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from the prescribed lines and curves. It shall be properly strutted
tight to prevent loss of liquid slurry from the concrete. It shall be
strongly and firmly erected. The mould shall be planed smooth, free
from knots, holes, open joints and other imperfection. The use of
bolts passing through concrete members which form parts of any
water retaining structure shall not be permitted for the purpose of
securing and aligning the form work. The form work shall be so
arranged as to permit easy erection initially and later easy removal
without jarring or disturbing the concrete wedges and clamps shall
be used wherever practicable instead of nails.
Where the depth of form work exceeds 1.5 metres, the contractors
shall keep one side partly open, from which the concrete could be
placed and the planking on the open side could be raised as the work
proceeds. This will avoid segregation of material in concrete and
also facilitate its proper vibration.
Before concrete is placed, all rubbish shall be removed from the
interior of the forms and surface of the forms work in contact with
the concrete shall be cleaned and thoroughly wetted. The inside
surface of the form work shall be treated with a coat of line, oil or
any other material approved by the Engineer. Care shall be taken to
see that the above approved composition is kept out of contact with
the reinforcement. The slab centering shall be covered with double
war water proofing paper or tar paper or polythene sheet as directed
by the Engineer.
c) Waterproof Paper
Waterproof building paper shall comply with B.S. 1521, 1949 for
road works, it shall be of class ‘B’.
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Where no special finish is desired such as slabs, columns in the
reservoir etc. and where form finish is acceptable, the form work
may be prepared out of ‘Anchor’ brand plywood for similar material
which shall give a good finish to the concrete surface finish. For
work which are of respective nature, such as column footings,
pedestals for pipe pedestal footing. The formwork shall be
fabricated out of steel plates and structurals to obtain uniform finish
throughout the work. In call cases the form work shall be inspected
and approved by the Engineer, before any concreting is started. The
contractors shall however, be solely responsible for the proper
design, adequacy and stability of the formwork. If at any time in the
opinion of the Engineer, the formwork provided is not considered
sufficiently rigid and/or is defective the contractors shall improve or
strengthen the same in such a manner as the Engineer may direct.
d) Removal of form work
In no circumstances shall forms be stuck off until the concrete
reaches adequate strength as required or without obtaining
permission of the Engineer. All form work shall be removed without
such shock or vibration as would damage to concrete. Before the
soffit and the strats are removed the concrete surface shall be
exposed where necessary in order to ascertain that the concrete has
hardened sufficiently. The responsibility for the removal of the form
work whether whole or part, shall rest entirely with the contractors
who must nevertheless be guided by the opinion of the Engineer in
this regard. The work of striking and the removal of form work shall
be conducted in the presence of the Engineer and under personal
supervision f a competent foremen in the employment of the
contractor.
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Generally nothing less than the following times should elapse
between the filling in of the concrete and the removal of the forms.
i) Vertical sides of slab, beams and columns 48 hours
ii) Bottoms of slabs upto 15 ft/4.6 metre span 7 days
iii) Bottoms of slabs above 15 ft./4.6 metres 14 days
span. Bottom of beams upto 20 ft./4.6 metre
span and Arch rib bottoms upto 20 ft./6 mt.
Span
iv) Bottoms of beams over 20 ft/6 metre span 21 days
and arch rib above 20 ft./6 mt.span
e) Surface treatment and finish
When the form work is struck, all the faces of concrete shall be
smooth and sound, free from voids and air holes. Any roughness or
irregularity on the exposed surfaces shall be immediately filled up
while the concrete is still green with cement ground, cement wash
and/or 1:11/2 cement mortar properly trowelled and finished. Such
patching of the concrete face shall be carried out with the permission
of the Engineer. If the concrete is found honey-combed, the honey
combed protion and whatever surrounding concrete that may be
considered unsatisfactory by the Engineer shall be dismantled and
fresh concrete of proper quality shall be reinstated at contractor’s
cost.
51.0 DRY RUBBLE PACKING
Dry rubble packing shall consist of a layer of uniform thickness of blue
trap stone rubble carefully set on ground properly formed for the
purpose. The stones shall be laid upon their largest face. The interstices
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between the rubble stone shall be filled up with stone chips and the
whole packing made compact. If the packing be required for road work
or other similar purposes, the layer of rubble shall be composed of large
stones weighing not less than 30 kg. each. If the packing be required for
flooring, the stone shall weigh not more than 2.25 kg. each.
52.0 BRICK MASONRY WORK
a) Materials
a) Bricks - Bricks to be whole, sound, well burnt, free from cracks
to ring when struck and not to crack or break when soaked in
water or thrown on the ground on their flat face in a saturated
condition from a height of 60 cm, regular in shape and uniform
size. They shall be of the best description obtainable in market
and of the best quality and colour. They shall not absorb water
more than 20 per cent of dry weight when immersed in water
for 24 hours. They shall have a crushing strength of not less
than 35 kg./cm.
Cement - Cement shall conform to the specification detailed in
Clause No.88.
Sand - Sand shall conform to the specifications detailed in Clause
No.88.
b) Cement Mortar
All cement mortar to be used on this work shall be in proportion as
specified and directed by the Engineer. The ingradient shall be
measured dry, be means of properly made gauge boxes on a covered
platform and shall be thoroughly mixed dry before adding water to
get the required consistency. Only such quantity of mortar shall be
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prepared at a time as can be used up immediately. Mortar after it has
begun to set, shall not be allowed to be raked up again, but shall be
rejected and the contractors shall removes the same from the work
site immediately.
c) Workmanship
This brick work shall be carried out in a workman like manner and in
perfect plumb, line and level as required. Brick shall be thoroughly
cleaned, well watered or soaked in water for atleast 12 hours before
being used on the work. No broken bricks shall be permitted to be
used except as closers. Good bond shall be preserved throughout the
work both laterally and transversely.
All bed joints shall be horizontal in vertical walls, radial in arches
and at right angles for the slopes in battered walls. In walling, the
courses shall be kept perfectly horizontal and rise in plumb. The
vertical joints shall break joints with the course below and above.
Use of bats shall be avoided as far as practicable. The joint shall be
close and regular and shall not exceed 12mm in thickness. The bond
shall be English Bond unless otherwise permitted by the Engineer.
The contractor shall provide at their own expense all moulds,
tamplates, centres, scaffolding etc. as may be required for the proper
execution of the work and nothing extra will be paid for the same.
The mortar used should be stiff. The brick work shall be kept wet
while the work is in progress for atleast seven days after completion,
to the entire satisfaction of the Engineer. On Sundays and Holidays,
when the work is not in progress, the masonry shall be watered
continuously by engaging Bhisties. Watering shall be done carefully
so as not to wash out mortar of the joints. The Engineer shall be at
CIDCO OF MAHARASHTRA LIMITED Sl.Pg.No.460C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
liberty to engage labours at contractor’s cost to water the work,
should the Contractors fail to do so. Should the mortar perish i.e.
become dry, while or powdery, through neglect in watering, the work
shall be pulled down and rebuilt at contractor’s cost.
The whole of the masonry work shall be carried up at one uniform
level throughout but where breaks are unavoidable, the joint shall be
made in good long steps, raked so as to prevent cracks arising due to
separation of old and new work. All junctions of walls shall be
formed at the time the walls are being built and cross walls shall be
carefully bonded into the main walls.
When new work is to be added to existing structing, the old work
must be prepared to receive new work by roughening and grouting
with a layer of rich mortar and both be carefully bonded together.
During the rains the works to be carefully covered without extra
charge so as to avoid mortar being washed away.
d) Colouring of Brick
For colouring bricks, an earthern-ware box shall be provided a few
cm longer each way than a common brick, and half filled with the
liquid of the required description to about the consistency of thick
crean. The brick to be coloured shall be laid on the iron-plate with a
fire underneath and heated to a heat not too great to admit of their
being handled. They are to be taken out one at a time and dipped
into the liquid for a few seconds, and then placed on a table to dry
(which they do in a few minutes). When dry, they are to be lightly
washed in cold water and placed aside to dry agains. The material
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for the colouring liquid shall be linseed oil, turpentine and litharage
with the proper colouring matter unless otherwise specified.
Where yellow bricks are required, either Naosari yellow bricks or
fire bricks of uniform colour shall be used.
e) Cement Plaster to Brick Work
Cement plaster shall be provided to brick masonry or rubble masonry
wherever directed by the Engineer.
1. Materials
i) Cement
Cement shall conform to the specifications detailed in Clause
No.88
ii) Sand
Sand shall be conform to the specifications detailed in Clause
No.88
2. Cement Mortar
All cement mortar to be used on this work shall be in
proportion as specified and directed. The ingradient shall be
measured dry, by means of properly made gauge boxes, on a
covered platform and shall be thoroughly mixed dry before
adding water to get the required consistency. Only such
quantity of mortar shall be prepared at a time as can be used
up immediately. Mortar, after it has begun to set, shall not be
allowed to be raked up again, but shall be removed from the
work site immediately. Cement mortar shall be used within
30 minutes after if leaves the mixing board or mill.
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3. Workmanship
All stone or brick masonry shall be thoroughly wetted and
joints raked to a depth of 12mm and walls washed.
f) Pointing to Brick Work
The whole of the exposed faces of brick work, cut-stone work and
stone-paving when described as to be pointed are to have the joint
raked out to a depth of a 13mm and pointed with cement and sand
(unless otherwise described) in the proportion of one of cement to
one fine sand flush with the face of the work and out straight,
parallel and of uniform width.
The exposed faces of the rubble work are to be similarly pointed
(When described as to be pointed) but the joints shall be raked out to
a depth of 20mm and shall be irregular in direction.
The above description of pointing shall apply generally to all classes
except only as the pointing material which may in certain cases to be
otherwise described in this specification.
g) Bonding of old work with new work
Wherever any new work meets the old, certain portions of the old
work as may be ordered by the Engineer, shall be cut away in order
that the new work may be properly bonded into the old. No payment
will be allowed to the Contractors for cutting away any portion of the
work done under this contract for the purpose of other similar work,
or in such case for bonding and making good the same as above
described.
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h) Cutting holes in new work
Wherever any hole or other communication has to be cut into the
wall or made with a drain or a sewer or a manhole or into or with
other masonry, the hole or communication shall be cut or made
neatly to the requisite size and pipe, tail piece, elbow or other article
or work for which it is required shall be neatly and soundly stopped
around with, or built in cement and sand (1 to 1). The rate of cutting
the hole or that for the work for which the communication is required
shall include the cost of such stopping, that of any making good that
may be required and also that of any arrangements which the
contractors may have to make in order to stop the access of sewage
or water during the execution of their work. No payment will be
allowed to the Contractors for cutting out any portion of the new
work for the purpose of other work under this contract, or in such
case stopping and making good as above described. If the sewer or
the drain into which hole or communication is to be cut is in a
working condition and if there is likelyhood of the workman being
exposed to the danger arising from these wage gases, such work and
also that of removing such stop or plug shall be done by the CIDCO
staff trained for such work and under the supervision of a responsible
officer as may be directed by the Engineer and the cost of such work
will be borne by the Contractor.
i) Protection of Work from Sun
All cement work, pointing plastering and concrete work shall be
shaded from the sun, and surface kept mostaned until, in the opinion
of the Engineer it is thoroughly set.
j) Definition of Incomplete Work
A line or stretch of pipe sewer (including the excavation thereof and
all other accessories thereto) will be considered incomplete unless
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entirely laid jointed and fully tested, encased wherever required the
trenches filled and consolidated, and the manhole at each and
completely finished with floors, channels cover and all other detail.
A manhole will be considered incomplete unless it is completely
finished as above, and at least one of the lines of pipe sewer to which
it belongs or it attached, is complete as described above.
The Contractors shall have no claim for incomplete work and no
incomplete work will be measured up for payment to the
Contractors.
53.0 MEASUREMENT FOR TRANSPORT OF RUBBLES
Serviceable rock will be permitted to be used for refilling trenches.
The measurement for the items of transport of rubble to specified
distance will be either by lorry measurements or depot measurement as
directed without deducting anything in quantities in excess of the
calculated surplus material to be removed as per excavation item.
54.0 CONTRACTOR TO OBSERVE ALL CONDITIONS
The contractors are particularly directed to observe from the Articles of
Agreement and the Specification what is to be included in their rate for
the several portions of the work and also under what conditions
payments are to be made.
55.0 Providing, lowering, laying and jointing RCC pipe of NP-2/NP-3
class (spigot/socketed) of various diameter with rubber ring and
cement mortar 1:3 in proper line, level and slope including curing
etc. complete.
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55.1 GENERAL :
The item provides for the supply and fixing of the spun concrete pipes of
the specified class and diameter in position for the Cross Drainage works
including necessary collars, conveyance and fixing in cement mortar 1:2.
55.2 MATERIALS :
Concrete pipes shall be of the class and diameter mentioned in the item
and shall comply with I.S. 458-1971.
The collars shall be of the appropriate size for fixing of the concrete pipes
specified on the drawings and shall comply with the I.S. 458-1971.
The cement mortar shall comply with the specification No.B.5(a),
proportion of cement to sand being 1:2.
55.3 FIXING :
The handling and laying of the concrete pipes shall comply with I.S.
783-1985 code of practice of laying concrete pipes.
The pipes shall be laid to the lines and levels shown on the drawings and
the slope shall be 1 in 100 towards the down stream unless other slopes
are specified on the drawing or as ordered by the Engineer.
The ends of the pipes shall be flush with face of masonry or bell mouthed
if so indicated on the drawings or ordered by the Engineer. Pipes of
non-standard length may be used when standard length pipes do not fit in
between the faces of walls. Otherwise extra lengths of standard pipes may
be left projecting beyond face of masonry on the downstream. Such extra
length will not be paid for.
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Diversions of the road if found necessary, shall be provided according to
BR.1 at the cost of the contractor unless separately provided in the tender.
The collar joints be cured satisfactorily. Till then the filling around shall
not be done.
55.4 ITEM TO INCLUDE :
1) Supply, conveyance and fixing of the spun concrete pipes including
collars, fixing in cement mortar 1:2 to the line, levels and slope.
2) All labour materials, use of equipment and tools for completing the
item satisfactorily.
55.5 MODE OF MEASUREMENT & PAYMENT :
The measurement shall be for the length of pipes provided and fixed with
collars from the outside of one face wall to the outside of the other face
wall, limiting the length to that specified in the plan, or ordered by the
Engineer.
The length shall be measured correct up to a centimetre. The rate shall be
inclusive of all the projecting lengths, if any, projections being ignored in
the measurements.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.467C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
LIST OF APPROVED MAKES ANDBRANDS OF MATERIALS
The contractor should distinctly understand that it will not be their prerogativeto insist on using a particular make/brand from amongst the approved ones.The final selection will have to be done with the approval of Engineer. Theprovision will apply where contractors do not state their choice of materialswhile submitting tenders. The list given below is only indicative and notrestricted to brands mentioned. Other equivalent brands may be approved atthe discretion of the Engineer.
__________________ ___________________Signature of Tenderer Chief Engineer (South)
Date : Date :
CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.469C.A.NO.03/CIDCO/EE(PNL-II)/2012-13
Name of Work :Integrated infrastructure development of Roads,Footpath, S.W. Drain, Water Supply & Sewerage etc. for12.5% Scheme in Sector – 2A at Karanjade, Panvel.
LIST OF DRAWINGSSl.No.
Title Drawing No.
1. Nodal cum Location Plan of Karanjade C.A.03/EE(PNL-II)/12-13/01
2. Layout Plan of Proposed Road Network C.A.03/EE(PNL-II)/12-13/02
3. Layout Plan of Proposed S.W.D. Network C.A.03/EE(PNL-II)/12-13/03
4. Layout Plan of Proposed Sewerage Network C.A.03/EE(PNL-II)/12-13/04
5. Layout Plan of Proposed Water Supply Network C.A.03/EE(PNL-II)/12-13/05
6. Typical Cross Section of 15 M. Wide Road (Filling) C.A.03/EE(PNL-II)/12-13/06
7. Typical Cross Section of 15 M. Wide Road (Cutting) C.A.03/EE(PNL-II)/12-13/07
8. Typical Cross Section of 11 M. Wide Road (Filling) C.A.03/EE(PNL-II)/12-13/08
9. Typical Cross Section of 11 M. Wide Road (Cutting) C.A.03/EE(PNL-II)/12-13/09
10. Typical Cross Section of 9 M. Wide Road (Filling) C.A.03/EE(PNL-II)/12-13/10
11. Typical Cross Section of 9 M. Wide Road (Cutting) C.A.03/EE(PNL-II)/12-13/11
12. Typical Details of Kerb Stone & Water Table C.A.03/EE(PNL-II)/12-13/12
13. Typical Details of S.W. Drain & Footpath C.A.03/EE(PNL-II)/12-13/13
14. Typical Cross-Section of RCC NP-3 for UtilityServices
C.A.03/EE(PNL-II)/12-13/14
15. Typical Details of Sewerage Connection Arrangement C.A.03/EE(PNL-II)/12-13/15
16. RCC details of S.W. Drains for Footpath (Road Side) SD/STD/CUL/FOOTPATH/59
17. PCC S.W. Drains for Footpath (Road Side) SD/STD/PCC/SWD/A-167/ R2
18. RCC details of S.W. Drains for Vehicular Traffic SD/STD/CUL/VEHICULAR/59
19. Light & Heavy Duty Covers & Frames for ExistingDrains & Water Supply Chambers
SD/STD/SWD/A-145/R1
20. Standard drawing of Manhole
__________________ ___________________Signature of Tenderer Chief Engineer (South)