What is the primary application of IS 7319 pipes?

They are used for collecting and draining sub-surface water in applications like agricultural land drainage, road drainage, and drainage behind retaining structures.

What is the maximum water absorption allowed for these pipes?

The average water absorption must not exceed 10 percent by mass (Clause 7.2).

Are these pipes reinforced?

No, this standard covers unreinforced concrete pipes. For reinforced concrete pipes, refer to IS 458.

How is the strength of these pipes specified?

The strength is specified as a minimum crushing load in a three-edge bearing test, given in kN/m in Table 3.

IS 7319

: 1974

perforated concrete pipes

CurrentSpecializedSpecificationWater Resources · Cement Matrix Products

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This standard specifies the requirements for unreinforced perforated cement concrete pipes used for subsoil drainage. It covers materials, dimensions, perforations, physical characteristics like crushing strength and water absorption, and testing methods.

perforated concrete pipes

Quick Reference Values

Maximum average water absorption10 % by mass

Minimum crushing strength for 100mm dia pipe14 kN/m

Perforation diameter range6 mm to 25 mm

Minimum wall thickness for 100mm dia pipe25 mm

Minimum cement content330 kg/m³

Practical Notes

These pipes are intended for gravity flow and subsoil drainage only, not for pressure applications.

Ensure a proper geotextile filter wrap or graded aggregate filter is used around the pipes to prevent clogging of perforations by soil fines.

Proper bedding and careful backfilling are critical to prevent pipe damage, as they are unreinforced and have low crushing strength compared to RCC pipes.