Minimum Cover For Reinforcement in Cast-In-Place Concrete

Minimum Cover For Reinforcement in Cast-In-Place Concrete:

The clear cover is the distance between the outer surface of concrete to the nearest surface of reinforcing bar.

Clear cover varies in different conditions. The clear cover for cast-in-place concrete is given in the below table.

Sl. No.	Conditions			Minimum cover (inches)
1	Concrete cast against and permanently exposed to earth			3
2	Concrete exposed to weather or earth	No. 6 to no. 18 bar		2
		No. 5 bar, W31 or D31 wire and smaller		1 ½
3	Concrete unexposed to weather or in contact with the ground.	Slabs, Walls, and Joist	No. 14 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 large bars.	¾
			No. 5 bar, W31 or D31 wire and smaller.	½
4	Concrete tilt-up panels cast against a rigid horizontal surface, like concrete slab.	No. 8 bar and smaller.		1
		No. 9 to no. 18 bar.		2

Also Read- Development Length & Lap Length Of Bars.

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