Civil Engineering MCQJE Level Civil Engineering
The cover to main reinforcement in a column exposed to moderate environment per IS 456 is:
RCCRCCMEDIUM
Choose the correct answer
A
20 mm
B
25 mm
C
40 mm
D
60 mm
Correct Answer
C. 40 mm
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IS 456 Table 16: Nominal cover for columns: Mild = 40 mm; Moderate = 40 mm; Severe = 50 mm; Very Severe = 50 mm; Extreme = 75 mm. Note: For slabs, mild = 20 mm. Columns require more cover than beams because of casting against formwork and critical nature of member.
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