Codal Provisions of Concrete
IS 456:2000
Cl 6.2.2, Page No. 16, Tensile strength of concrete, fcr = 0.7 x sqrt(fck)
Cl 6.2.3.1, Page No. 16, Modulus of elasticity of concrete Ec=5000 x sqrt (fck)
Cl 8.2.4.2 Maximum cement content is concrete per cum is 450kg/m3
Table 5, Page No 20, Minimum cement content for plain cement concrete is 220kg/m3
Table 5, Page No 20, Minimum cement content for Reinforced concrete is 300kg/m3.
Cl 8.2.8, Page No. 21, In sea water minimum grade of plain cement concrete shall be M20 and minimum grade of reinforced concrete shall be M30.