IS 15024:2001 is the Indian Standard (BIS) for guidelines for design of reinforced soil structures (general). This standard provides guidelines for the design and analysis of reinforced soil structures, such as retaining walls and embankments. It outlines the principles for ensuring both external stability (sliding, overturning, bearing capacity) and internal stability (reinforcement rupture, pullout).
Provides general guidelines for the design of reinforced soil structures.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Minimum Reinforcement Length (L/H) | L ≥ 0.7H, with a minimum of 3.0 m. | L ≥ 0.7H, with a minimum of 2.4 m (8 ft). | AASHTO LRFD |
| Factor of Safety against Sliding | ≥ 1.5 | AASHTO uses a resistance factor φ=1.0 for sliding against factored loads. Traditional ASD (Allowable Stress Design) codes also use ≥ 1.5. | AASHTO LRFD / General ASD Practice |
| Base Eccentricity Limit (e/B) for Bearing | e/B ≤ 1/6 (resultant within middle third) for soil. | e/B ≤ 1/4 for soil; e/B ≤ 3/8 for rock. | AASHTO LRFD |
| Factor of Safety for Pullout Resistance | ≥ 1.5 | Uses a resistance factor (φ) based on reinforcement type (e.g., φ = 0.9 for steel strips, φ = 0.8 for geogrids). | AASHTO LRFD |
| Factor of Safety for Tensile Rupture | ≥ 1.5 | Uses a resistance factor (φ) based on reinforcement type (e.g., φ = 0.75 for steel strips, φ = 0.9 for geogrids). | AASHTO LRFD |
| Minimum Embedment Depth | H/20 to H/10, with a minimum of 0.6 m. | H/20 for level ground, with a minimum of 0.6 m (2 ft). | FHWA-NHI-10-024 |
| Seismic Coefficient (kh) for Pseudo-static Analysis | kh = (Z/2) * (I/R) based on IS 1893 seismic zones. | kh = 0.5 * Amax, where Amax is site-adjusted peak ground acceleration. Simplified: kh = 0.5 * PGA. | AASHTO LRFD |