Question $7$: The figure below shows a typical crane that is used to lift heavy equipment. A load of

$12000$ kg is carried by a cable GDE through the pulley at D to a truss structure at point E$.$ A

downwards load of $50$ kN representing a crane operator cabin is applied at point $E.$ The loads are

carried by a pinned truss $($E$-$F$-$C$-$G$-$H$-$I$-$K$-$J$-$B and CG$)$ to the superstructure column ABJCD. The

superstructure column is continuous from $A$ to $D,$ while all other members are pin$-$pin connected.

Assume all members are massless. The support reactions at A are fixed. Calculate the following.

Calculate the support reactions.

Calculate the axial forces in the members listed in the table below. Make sure

you properly identify if they are in compression or tension.