Question

the semi-compact section of a laterally unsupported steel beam has an elastic section modulus, plastic section modulus and design bending compressive stress of 500 cm3 , 650 cm3 and 200 mpa, respectively. the design flexural capacity (expressed in knm) of the section is

Answer 1

Flexural capacity =(ze/zp)*zp*fcd

=(500/650)*650*200*10^-6=100knm