Concrete Member | Minimum Cover |
---|---|
Slab | 20mm |
Beam | 20mm |
Column | 40mm for d>12mm25mm for d<12mm |
Footing | 50mm |
Exposure | Nominal Concrete cover (in mm) not less than |
---|---|
Mild | 20 |
Moderate | 30 |
Severe | 45 |
Very severe | 50 |
Extreme | 75 |
Sl. No. | Conditions | Minimum cover (inches) |
1 | Concrete cast against and permanently exposed to earth | 3 |
2 | Concrete exposed to weather or earth | 2 |
1 Β½ | ||
3 | Concrete unexposed to weather or in contact with the ground. | 1 Β½ |
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