QUESTION $1$

Given the frame in Figure $1$ below, the following is required:

$1\mathrm{.}1$ Select one stiffness method and calculate moments at joints A$,$ B$,$ C$,$ and D$.$ El is constant $(20).$

$1\mathrm{.}2$ Using moments calculated in Question $1\mathrm{.}1.$ Calculate the reactions at A and D$.(4)$

$1\mathrm{.}3$ Draw the shear force diagram. $(3).$

$1\mathrm{.}4$ Draw the bending moment diagram. $(5).$

Figure $1$: Frame.

Please help urgently