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IS 14207:1994 is the Indian Standard (BIS) for guidelines for canal lining with geomembranes. This standard provides guidelines for selecting and installing geomembrane liners in canals to control seepage. It covers material properties, site preparation, installation techniques, jointing, anchoring, and quality control measures.
Provides guidelines for the selection, design, and installation of geomembranes for canal lining.
EN 13362:2018CEN (European Committee for Standardization), Europe
HighCurrent
Geosynthetic barriers - Characteristics required for use in the construction of canals
Directly addresses characteristics and requirements for geosynthetic barriers used in canal construction.
USBR Design Standards No. 13, Chapter 19U.S. Bureau of Reclamation, USA
HighCurrent
Embankment Dams, Chapter 19: Geomembrane Linings
Provides comprehensive design and installation guidelines for geomembrane linings in water conveyance structures.
GRI-GM18Geosynthetic Institute (GSI), USA
MediumCurrent
Standard Specification for Flexible Polyvinyl Chloride (PVC) Geomembranes
Focuses specifically on the material properties of PVC geomembranes, which are a core component of the IS 14207 guideline.
ASTM D7176-20ASTM International, USA
MediumCurrent
Standard Specification for Non-Reinforced Polyvinyl Chloride (PVC) Geomembranes Used in Buried Applications
Provides a material specification for PVC geomembranes, similar to GRI-GM18, covering a subset of the IS guideline's scope.
Key Differences
≠IS 14207 is primarily focused on PVC geomembranes, whereas modern international standards provide detailed specifications for a wider array of polymers like HDPE, LLDPE, fPP, and EPDM.
≠The Indian standard is a general 'guideline'. International counterparts like EN 13362 are more rigorous 'specifications' with defined performance classes and detailed durability testing requirements (e.g., UV exposure, oxidation resistance).
≠International practices, such as ASTM D5820, specify advanced non-destructive seam testing methods like pressurized air channel evaluation for dual-track welds, which are not detailed in IS 14207.
≠IS 14207 references older, corresponding IS test methods. International standards reference globally recognized, and often more advanced, ASTM, ISO, or EN test procedures for material properties and performance.
Key Similarities
≈All standards emphasize the critical need for proper subgrade preparation, ensuring a smooth, stable surface free of sharp objects, stones, and organic material to prevent geomembrane puncture.
≈The fundamental principle of using anchor trenches at the crest of the canal to secure the geomembrane and prevent it from sliding down the slope is a common requirement.
≈Both the IS code and international guidelines mandate the placement of a protective cover (e.g., soil, concrete, or riprap) over the geomembrane to protect it from mechanical damage and UV degradation.
≈General installation principles are consistent, such as deploying panels with sufficient slack to account for thermal expansion/contraction and ensuring panel overlaps are clean before seaming.
Parameter Comparison
Parameter
IS Value
International
Source
Minimum Thickness (for small/medium canals)
0.5 mm to 0.75 mm
0.5 mm (20 mil) to 0.75 mm (30 mil) are common minimums
GRI-GM18
Tensile Strength (PVC)
≥ 15 MPa
≥ 15 MPa
GRI-GM18
Elongation at Break (PVC)
≥ 250%
≥ 300%
GRI-GM18
Tear Resistance (PVC)
≥ 30 N
≥ 35 N (for 0.75mm thickness)
GRI-GM18
Seam Shear Strength
≥ 80% of parent material strength
Must achieve Film Tear Bond (FTB), where the parent material fails before the seam itself. Often specified as >90% of parent material strength.
GRI-GM19
Seam Overlap (Thermal Weld)
Recommended 75 mm
Typically 75 mm to 150 mm
USBR Design Standards No. 13
Anchor Trench Depth
Recommended ~500 mm
Typically 300 mm to 600 mm
USBR Design Standards No. 13
⚠ Verify details from original standards before use