tech spec of hume pipes of np graded

7/27/2019 Tech Spec of Hume Pipes OF NP GRADED

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TECHNICAL PARTICULARS OF R.C.C. HUME PIPES

This Specification covers the requirements for Non-Pressure Reinforced Precast Concrete

Pipes (Spun) used for culverts, sewers, irrigation etc.

The Concrete Pipes shall be conforming to IS: 458/2003 (Fourth Revision) with up-to-date

amendment with regards to Design /Dimensions / Tolerances / Workmanship & Finish /

Materials used for making the Pipes. The Pipes shall be manufactured by spinning process.The ends of the concrete pipes shall be suitable for flush joints or collar joints or suitable

for Socket & Spigot, roll on joints or confined gasket joints as per the requirements of thepurchaser.

The Pipes shall be of the following Sizes & Classification:

Schedule- 1: Reinforced Concrete, Light duty, Non-pressure Pipes, Class: NP2, with ends of

the pipes suitable for collar joints conforming to IS: 458/2003 (Fourth Revision)

with up-to-date amendment

Nominal Diameter of Pipes in mm.

80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000,

1100, 1200, 1400, 1600 & 1800.

1. Dimensions, Design and Strength requirements of Reinforced Concrete Pipes of Class NP2

shall be as per the Table 2 of IS: 458/2003(Fourth Revision), with up-to-date amendment.

2. Tenderers may also quote rates separately for the Collars. Dimensions and Design

requirements of Reinforced Concrete Collars for Pipes of Class NP2 shall be as per the Table

21 of IS: 458/2003, with up-to-date amendment.

Schedule- 2: Reinforced Concrete, Light duty, Non-pressure Pipes, Class: NP2, with ends of

the pipes suitable for Socket & Spigot, roll on joints or confined gasket joints

conforming to IS:458/2003 (Fourth Revision) with up-to-date amendment along

with Rubber Ring conforming to Type 2 of IS: 5382/1985 with up-to-dateamendment.


80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000,

1100,1200, 1400, 1600 & 1800.


shall be as per the Table 2 of IS: 458/2003(Fourth Revision) with up-to-date amendment.2. Spigot & Socket dimensions of NP2 Class Pipes shall be as per Table 13 of

IS: 458/2003(Fourth Revision) with up-to-date amendment.

3. Rubber Ring chords used in the Pipe joints shall conform to Type 2 of IS: 5382/1985 withup-to-date amendment.


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Schedule- 3: Reinforced Concrete, Medium duty, Non-pressure Pipes, Class: NP3, with ends

of the pipes suitable for flush joints conforming to IS: 458/2003 (Fourth Revision)

with up-to-date amendment.


80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000,

1100, 1200, 1400, 1600 & 1800.

1. Dimensions, Design and Strength requirements of Reinforced Concrete Pipes of Class NP3shall be as per the Table 3 of IS: 458/2003(Fourth Revision) with up-to-date amendment.

Schedule- 4: Reinforced Concrete, Medium duty, Non-pressure Pipes, Class: NP3, with endsof the pipes suitable for Socket & Spigot, roll on joints or confined gasket joints

conforming to IS:458/2003 (Fourth Revision) with up-to-date amendmentalong



80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000,

1100, 1200, 1400, 1600 & 1800.


shall be as per the Table 3 of IS: 458/2003(Fourth Revision) with up-to-date amendment2. Spigot & Socket dimensions of NP3 Class Pipes shall be as per Table 14 & Table 17 of IS:

458/2003 (Fourth Revision) with up-to-date amendment.

3. Rubber Ring chords used in the Pipe joints shall conform to Type 2 of IS: 5382/1985with up-to-date amendment.

Schedule- 5: Reinforced Concrete, Heavy duty, Non-pressure Pipes, Class: NP4, with ends of

the pipes suitable for flush joints conforming to IS: 458/2003 (Fourth Revision)

with up-to-date amendment.


80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900, 1000,

1100, 1200, 1400, 1600 & 1800.

1. Dimensions, Design and Strength requirements of Reinforced Concrete Pipes of Class NP4shall be as per the Table 6 of IS: 458/2003 (Fourth Revision) with up-to-date amendment.


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Schedule- 6: Reinforced Concrete, Heavy duty, Non-pressure Pipes, Class: NP4, with ends of

the pipes suitable for Socket & Spigot, roll on joints or confined gasket joints

conforming to IS:458/2003 (Fourth Revision) with up-to-date amendmentalong



80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900,

1000,1100,1200, 1400, 1600 & 1800.


shall be as per the Table 6 of IS: 458/2003(Fourth Revision) with up-to-date amendment.

2. Spigot & Socket dimensions of NP4 Class Pipes shall be as per Table 14 & Table 17 of IS:

458/2003(Fourth Revision) with up-to-date amendment.


Schedule-7: Reinforced Concrete Collar for Reinforced Concrete, Light duty, Non-pressure

Pipes, Class: NP2 conforming to IS: 458/2003 (Fourth Revision) with up-to-date

amendment.

Reinforced Concrete Collar for the Pipes, Class: NP2, size (Nominal Diameter

in mm) , is as per below:

80, 100, 150. 200, 225, 250, 300, 350, 400, 450, 500, 600, 700, 800, 900,

1000,1100,1200, 1400, 1600 & 1800.

1. Dimensions and Design requirements of Reinforced Concrete Collar for Pipes of Class NP2

shall be as per the Table 21 of IS: 458/2003(Fourth Revision) with up-to-date amendment.

Schedule - 7 Transportation Charges:

Sub Item

Code No. Item Description Distance in km. Transportation Charges in %on the Total Cost of Pipes/Collars

1 Upto 50 km.

2 Above 50 km. upto 100 km.

3 Above 100 km. upto 150 km.

4 Above 150 km. upto 200 km.5 Above 200 km.


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Inspection & Testing:

As per prevailing practice, the following Review of Reports shall be carried out.

Review of Reports:

The following Reports shall be submitted to the Inspecting Officer at the time of Inspection for

review:

During manufacture, Compressive Strength Tests shall be conducted by the manufacturers on 150

mm Concrete Cubes in accordance with the relevant requirements of IS: 456/2000 with up-to-date

amendment and IS: 516/1959 (Reaffirmed 1999) with up-to-date amendment , as stipulated in clause

5.5.3 of IS: 458/2003 (Fourth Revision) with up-to-date amendment. The manufacturer shall submit

the results of Compressive Strength Tests of Concrete Cubes made from the Concrete used for the

pipes. Alternatively, if the manufacturers do not have the facilities for Compressive Strength Test on

Concrete Cubes, they shall get the Test done at CSIDC laboratory at least once in a month and

submit the report to the Inspecting Officer for review.

1. Manufacturer shall submit his own Certificate for materials of construction used in the pipes.2. Manufacturer shall submit Test Certificate for the Steel used for Reinforcement.

3. Manufactures Test Repot of Rubber Rings shall be submitted for review (incase of Pipes

with Socket & Spigot ends).

TESTS:

As per prevailing practice, the following Tests / Checking shall be carried out.

1. Visual examination,2. Permeability Test and

3. Three Edge Bearing Test to produce 0.25 mm crack.4. Any other Tests that are mentioned in IS: 458/2003 (Fourth Revision) with up-to-date

amendment shall be carried out if desired by the Consignee.

NOTE:

1. The tolerances on Pipes shall be as per clause 8.2 & tolerances on Collar shall be as per

Table No.21 of IS: 458/2003 (Fourth Revision) with up-to-date amendment.

2. Workmanship & Finish of the Pipes & Collars shall be as per Clause 9 of IS:

458/2003 (Fourth Revision) with up-to-date amendment.

3. The length in which the pipes are to be supplied shall be as per the mutual agreement

between the purchaser and the supplier. However, the recommended length above 300 mmNominal Diameter is 2.5 meters.

4. Curing of the pipes shall be done as per the Clause 7.4 of IS: 458/2003 (Fourth Revision)with up-to-date amendment.


6. The following information shall be shall be clearly marked on the each Finished Pipe.

a. Size of Pipe,

b. Class of Pipe, and

c. Name of manufacture.


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7. The supplier shall guarantee the Pipes and Collars for a period of 12 months from the date of

receipt of the materials by the consignee.8. For Reinforced Concrete Pipes Rates must be quoted on the basis of Per Meter length and in

the case of Collars Rates shall be quoted on the basis of Per Piece. (The cost of theRubber Ring shall be included in the Rate per Meter length of the Pipe. No extra payment

towards the supply of Rubber rings will be made) as per the prevailing practice,

transportation cost for Pipes & Collars shall be quoted separately.

tech spec of hume pipes of np graded

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