Question

The magnitude of load P is increased till collapse of beam occurs. The plastic moment carrying capacity of steel beam section is 120 kNm. The value of R using plastic analysis is _____ kN.

Answer 1

$\Rightarrow \sum M_B=0$

$\Rightarrow 2R=M_P$

$\Rightarrow R=\frac{M_P}{2}=\frac{120}{2}=60kN$