1.

A certain RC structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per IS 456-2000 is

A. More than M 20
B. More than M 20 and less than M 30
C. Not less than M 30
D. Less than M 45 and more than M 30
Answer» D. Less than M 45 and more than M 30


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