To find : weight of steel per metre. Since the formula to be derived is d^2/162, assumed cross section is circular and the material is cylinder. Weight density of steel = 7850 kg/m^3. Rod Number Rod Size (in) Rod Weight (lb per linear foot) 2 0.250 = 1/4″ 0.17 3 0.375 = 3/8″ 0.38 4 […]