What is the difference between Type A and Type B pipes in IS 16098?

Type A pipes are intended for ventilation pipe work and rainwater applications, while Type B pipes have a thicker wall and are used for soil and waste discharge systems (Clause 3.2).

What is the Vicat softening temperature for these uPVC pipes?

The Vicat softening temperature shall not be less than 79°C when tested as per IS 12235 (Part 2) (Table 3).

Are these pipes suitable for underground installation?

No, this standard is for pipes installed above ground. For underground buried drainage and sewerage systems, refer to IS 15328.

What are the standard lengths of pipes available?

The standard effective lengths are 3 m and 6 m. Other lengths can be supplied by agreement between the purchaser and the manufacturer (Clause 5.4).

IS 16098

: 2013

Unplasticized Polyvinyl Chloride (uPVC) pipes for drainage systems - Specification

CurrentFrequently UsedSpecificationBIMMEP · Water Supply and Plumbing

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This standard specifies the requirements for unplasticized polyvinyl chloride (uPVC) pipes used for soil, waste, and ventilation (SWV) systems within buildings and for rainwater management. It outlines the material, dimensional, physical, and mechanical characteristics for two pipe types (A and B) and defines performance tests and marking criteria.

Specifies requirements for uPVC pipes intended for use in drainage systems within buildings.

Quick Reference Values

Pipe Type A ApplicationVentilation pipe work and rainwater applications

Pipe Type B ApplicationSoil and waste discharge systems

Minimum Vicat Softening Temperature79 °C

Maximum Longitudinal Reversion5 percent

Test Temperature for Reversion150 °C

Standard Effective Lengths3 m and 6 m

Default Pipe ColourDark shade of grey

Practical Notes

Crucially distinguish between Type A (for vent/rainwater) and Type B (for soil/waste) pipes; Type B has a thicker wall for greater strength and durability.

This standard is for above-ground applications inside buildings and on building premises. For underground drainage, refer to IS 15328.

Ensure solvent cement used for jointing conforms to IS 10151 for leak-proof and durable connections.