This standard (Part 1) provides general guidelines on geosynthetics, specifically focusing on geotextiles. It defines key terminology, classifies geotextiles based on their manufacturing process, and outlines their principal functions such as separation, reinforcement, filtration, drainage, and protection. This code is the foundational document for selecting, specifying, and testing geotextiles in India.
Covers general requirements, terminology, sampling and designation of geotextiles.
Quick Reference Values
Key property for ReinforcementTensile Strength (kN/m)
Key property for FiltrationApparent Opening Size (O95) (microns or mm)
Key property for in-plane DrainageTransmissivity (m²/s)
Key property for cross-plane DrainagePermittivity (s⁻¹)
Key property for SurvivabilityPuncture Resistance (N)
Key property for SeparationMass per unit area (g/m²)
Practical Notes
This part defines *what* properties to specify for a geotextile; it does not provide the actual design values. The required performance values must be determined by the design engineer based on site-specific analysis.
When specifying a geotextile, clearly state the primary function(s) required (e.g., separation, reinforcement) as this dictates which properties (tensile strength, AOS, permittivity, etc.) are critical for quality control and acceptance.
Always cross-reference the relevant parts of IS 13325 for the standardized test methods to verify properties claimed on a manufacturer's technical data sheet.