IS 2911:2010 Part 1 is the Indian Standard (BIS) for design and installation of piled foundations - part 1: concrete piles. This code covers the design and installation of concrete piles, including driven cast in-situ, bored cast in-situ, driven precast, and bored precast piles. It provides detailed methodologies for calculating bearing capacities using static formulas, specifying structural reinforcement, and outlining installation and quality control procedures.
Deals with the design and construction aspects of piled foundations using concrete piles.
BIM-relevant code. See the BIM Hub for ISO 19650, IFC, and LOD/LOIN frameworks used alongside it.
| Parameter | IS Value | International | Source |
|---|---|---|---|
| Design Safety Approach | Working Stress Design with global Factor of Safety (typically 2.5 on ultimate load). | Limit State Design with partial factors on loads and resistances (e.g., γ_R = 1.4 for end bearing). | EN 1997-1 |
| Minimum Concrete Cover (to main bars) | 60 mm | 75 mm (for piles cast directly against soil) | BS 8004:2015 |
| Minimum Centre-to-Centre Pile Spacing | 3 x Pile Diameter | 3 x Pile Diameter is a commonly recommended minimum spacing. | ACI 336.3R-14 |
| Concrete Slump (for tremie placement) | 150 mm to 180 mm | Typically Class S4 (160 mm to 210 mm) or higher workability classes. | EN 1536:2010 |
| Minimum Longitudinal Reinforcement | 0.4% of gross cross-sectional area | 0.5% for piles resisting bending moments. | BS 8004:2015 |
| Positional Tolerance (at cut-off level) | 75 mm in any direction. | 75 mm for single piles or piles in a two-pile group. | EN 1536:2010 |
| Cut-off Level Tolerance (vertical) | +25 mm / -75 mm | ± 50 mm | EN 1536:2010 |