Question

A certain RC structure has to be constructed along a sea coast. The minimum grade of concrete to be used as per $\text{IS 456 : 2000}$ 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 1

The correct option is C Not less than M 30

For sea water grade of concrete lower than M30 shall not be used in reinforced concrete (As per IS 456 : 2000).