Elastic modulii of steel:

Taking the Elastic modulii of steel & concrete as E_s and E_c and the modular ratio,

 m = E_S /E_C as 18, let us discover the loads shared by steel and concrete while an axial load of 600 kN is applied on the column.

Area of steel bars, As = 8 ×( π/4) × 32² = 6434 mm²

Area of concrete, A_c = (400 × 400 - 6434) = 153566 mm²

Modular Ratio, m = 18

Equivalent Area of Concrete = (153566 + 18 × 6434) = 269378 mm²

Total axial load = 600 kN.

Load shared by concrete = (600 /269378) ×153566 = 342.046 kN

Load shared by steel =( 600 /269378) × 18 × 6434 = 257.954 kN

RCC Column Cross Section

 (400 mm × 400 mm with 8 No. of 32 mm MS Bars)