Minimum Cover for Reinforcement in Cast-In-Place Concrete

The clear cover is the perpendicular distance between outer face of bar and the outer face of concrete of cross section of RCC member.





Clear over for Reinforcement varies in various conditions. Below are the clear cover for Cast-In-Place concrete for various conditions.

SL
Conditions
Minimum cover (inches)
01
Concrete cast against and permanently exposed to earth
3
02
Concrete exposed to earth or weather

No. 6 bar to no. 18 bar
2
No. 5 bar, W31 or D31 wire
and smaller
1 ½
03
Concrete not exposed to weather or in contact with ground
Slabs, walls, joists
No. 14 bar
and no. 18 bar
1 ½

No. 11 bar
and smaller
¾
Beams and columns:
Primary reinforcement, ties, stirrups and spirals
1 ½
Shells and folded plate members
No. 6 bar 
and larger
¾
No. 5 bar, W31 or D31 wire and smaller
½
04
Concrete tilt-up panels cast against a rigid horizontal surface, such as a concrete slab, exposed to the weather
No. 8 bar and smaller
1
No. 9 bar to no. 18 bar
2

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