OUESTION $2$

$[20]$

The frame shown in Figure $2$ is fixed at both supports A and D$.$

The frame is subjected to a vertical and horizontal point loads of magnitude $(w)$ as shown on the Figure. The fully plastic bending moment $(M_P)$ is $200kNm.$

a$)$ Under this loading, determine the collapse mode and the collapse load $(w$ on the verge of collapse.

$($Please note: use the VIRTUAL WORK $($displacement$)$ method in your analysis$).$

b$)$ Calculate the reactions at the supports and draw shear force $($SF$),$ bending moment $($BM$)$ and axial force $(AF)$ diagrams on the graph paper