What is the primary purpose of this standard?

To define the minimum quality and performance requirements for bituminous geomembranes to be used in canal lining and similar waterproofing applications.

What is the minimum tensile strength for a Type 1 BGM?

20 kN/m in the longitudinal direction and 15 kN/m in the transverse direction, as per Table 1.

How is watertightness verified?

The membrane must show no signs of leakage when subjected to a hydrostatic pressure equivalent to a 10 m head of water for 24 hours (Clause 8.9 and Table 1).

Does this standard cover site installation procedures?

No, this standard is a material specification. Installation methods are detailed in separate guidelines such as IS 15909.

IS 15389

: 2003

Geosynthetics - Bituminous geomembranes for canal lining and similar applications - Specification

CurrentSpecializedSpecificationBIMWater Resources · Waterproofing and Damp Proofing

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This standard specifies the requirements for factory-manufactured bituminous geomembranes (BGMs) used for lining canals, reservoirs, and other water containment applications. It covers the material composition, physical and mechanical properties, dimensions, and test methods to ensure the product's performance and watertightness.

Specifies requirements for bituminous geomembranes used for lining of canals, ponds, and other similar civil engineering waterproofing applications.

Quick Reference Values

Minimum Thickness (Type 1)4.0 mm

Minimum Mass per Unit Area (Type 1)4.5 kg/m²

Minimum Tensile Strength (Type 1, Longitudinal)20 kN/m

Minimum Puncture Resistance (CBR Test, Type 1)3.5 kN

Watertightness Test Pressure Head10 m of water

Maximum Water Absorption1.0 % by mass

Low Temperature FlexibilityNo cracking at -15 °C

Practical Notes

Subgrade preparation is critical; the surface beneath the membrane must be smooth and free of sharp objects to prevent punctures during and after installation.

This is a material specification standard; proper installation, especially the seaming/jointing of panels, is crucial for overall system performance and is covered in separate codes of practice like IS 15909.

For applications with prolonged exposure to sunlight, consider specifying a UV-resistant top surface or plan for a protective cover (soil, concrete tiles) to prevent long-term degradation of the bitumen.