Question

The permissible stress in direct compression,in concrete, as in the case of an R.C.C.column, for M 15 grade of concrete is

• A. 6 N/mm²
• B. 5 N/mm²
• C. 4.5 N/mm²
• D. 4 N/mm²

Answer 1

Answer:

D. 4 N/mm²