IS 14593:1998 is the Indian Standard (BIS) for guidelines for design and construction of reinforced earth retaining walls. This standard provides guidelines for the design and construction of reinforced earth retaining walls. It covers material specifications for backfill and reinforcement, design principles for internal and external stability (including seismic conditions), and detailed construction procedures to ensure performance and safety of these structures.
Provides guidelines for the design and construction of reinforced earth retaining walls using metallic or geosynthetic reinforcements.
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 to Height Ratio (L/H) | ≥ 0.7 | ≥ 0.7 (for walls supporting traffic) | AASHTO LRFD |
| Maximum Fines Content (<0.075 mm) in Reinforced Fill | ≤ 15% | ≤ 15% | AASHTO LRFD |
| Plasticity Index (PI) of Reinforced Fill | ≤ 6 | ≤ 6 | AASHTO LRFD |
| Design Approach for Internal Pullout | Global Factor of Safety ≥ 1.5 | Uses a partial factor on bond strength (f_fs), typically 1.3 | BS 8006-1 |
| Design Approach for External Sliding | Global Factor of Safety ≥ 1.5 | LRFD check where factored resistance (φ=1.0) must exceed factored loads. | AASHTO LRFD |
| Design Approach for External Overturning | Global Factor of Safety ≥ 2.0 | LRFD check where factored resisting moments must exceed factored overturning moments. | AASHTO LRFD |
| Earth Pressure Coefficient for Internal Stability | Active Earth Pressure Coefficient (Ka) | Ka for extensible reinforcements; for inextensible, can approach Ko near top of wall | AASHTO LRFD |