3.The modular ratio for M20 grade concrete is _____________
3.The modular ratio for M20 grade concrete is _____________ Correct Answer 13
According to Indian Standards 456-2000 The modular ratio (m) = 280/3× cbc, For M20; compressive bearing capacity in concrete = 7 N/mm2 & tensile strength = 330 N/mm2. Modular ratio (m) = 280/21 = 13.33.