testing of pipes & rubber rings

7/22/2019 Testing of Pipes & Rubber Rings

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CIDCO OF MAHARASHTRA LIMITED. Sl.Pg.No.305

C.A.NO.02/CIDCO/EE(B&U-III)/2010-11

TECHNICAL SPECIFICATIONS

(SEWERAGE WORK)

I. Manufacturing of R.C.C. pipe

NP2 and NP3

Pipes (NP2 or NP3 class) : Manufacturing of pipe as per IS

458 with the latest amendment as

per Clause 6 with amendment,

casting pipe by spinning, vibrating

the concrete method.

Flexible Rubber joints like pipe

socket-spigot shall provided.

1) Cement : As per IS 8041, IS 8043 and IS

8112 a latest version for the

manufactures of concrete pipes.

2) Steel wire fabric : i) Mild steel grade-I, as perIS:432 Part-I & II structural

steel as per IS:2062.

ii) As per IS 1566 and IS 1786

and IS 226 of latestamendments.

3) Class of pipe NP2

(Rubber Ring Roll on joint)

: Spigot and socket as per Table

No.9 of IS code 458 with latest

amendment and design as per

Table No.2 with amendments.

NP3

(Rubber Ring Roll on joint)

: Spigot and socket as per Table

No.10 and 10A of I.S. code 458

with latest amendment. Design asper Table 3 with amendment.

Barrel thickness design should be

approved before taking work of

manufacturing the pipe for NP3

class pipes.

4) Aggregates : Aggregates used as per I.S.383

latest version and as per Clause

No.4.3 of IS 458-1988 with

amendment No.2.


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5) Concrete : Pipe concrete should conforming

to IS:456-1978 code of practice

for plain and RCC (fourth

revision) as per clause No.4.5 withlatest amendment.

6) Water : As per IS 456-2000.

7) Testing at factory : Contractor has to make

arrangement of testing of pipe at

factory before supply at site.

Sampling as per IS code as per IS

458 clause 9 with latest

amendment/cube test are as per IS516-1959 and IS 5816-1999 at

factory.

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 be

as per clause No.10 of 458 with

amendment.

8) Marking on pipes : i) Name of manufacture withregister trademark.

ii) Class of pipe

iii) Date of manufacturer

iv) I.S.I. mark


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II Rubber Rings : Rubber ring chords used for pipes

joints shall conform to IS:5382-

1967 with amendment. Gasket

shall be made of a properlyvulcanized virgin rubber

compound of containing no scrap

or reclaim.

Tests : i) Hardness Test as per

IS:3400

ii) Tensile Test of Ring as per

IS:3400

iii) Compression Test as per

IS:3400.iv) Accelerated ageing in air as

per IS:3400.

v) Water absorption Test as

per I.S.3400.

Sampling the time lapse for

testing. Marking on Rings

: As per IS code 5382 class 6 clause

7 with appendix D.

i) The manufactures nameand Trade mark if any

ii) Month and year of

manufacturer

iii) The type follower by a

word such Gas or Water or

Sewer depending on the

applications.

iv) ISI mark

III Manholes : As per IS:411 (Part-I) 1986 and asper drawing issued by CIDCO for

execution purpose and as directed

by Engineer.

Type/spacing of manholes and

construction of manholes

: As per CIDCO drawing and

schedule of Rate.

IV Steps : As per Schedule of item and

drawing note.

As per IS:5455-1969.


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Load Test : One sample of step of 50 samples

may be subjected to load test as

per Appendix A

Marking : ISI mark

Manufacture Name

V Precast Concrete Manhole

cover and frame

: As per Tender Schedule and

Drawing and IS Code 12592-

2002.

i) Grade and Type : Heavy duty HD 20 Rectangular or

Circular

ii) Cement : IS:269, IS:455, IS:8043, IS:8112.iii) Aggregates : IS 383

iv) 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 testing

should be done in accordance with

Clause 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 and

IS Code 783. Width of excavation

is as per Particular Specification.

__________________ ____________________________

Signature of Tenderer Additional Chief Engineer (I&NT)

Date: Date:

testing of pipes & rubber rings

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