Which one of the following set of values give the minimum clear cover (in mm) for the main reinforcements in the slab, beam, column and footing, respectively, according to IS : 456-1978 ?

Which one of the following set of values give the minimum clear cover

1.	Which one of the following set of values give the minimum clear cover (in mm) for the main reinforcements in the slab, beam, column and footing, respectively, according to IS : 456-1978 ?
A.	20, 25, 30, 75
B.	5, 15, 25, 50
C.	15, 25, 40, 75
D.	none of the above
Answer» D. none of the above

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Which one of the following set of values give the minimum clear cover (in mm) for the main reinforcements in the slab, beam, column and footing, respectively, according to IS : 456-1978 ?

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