Vertical reaction:
The vertical reaction VA is obtained by taking moment of all forces about D in the free body diagram of Figure.
VA × 6 + 30 × 3 - 15 - 45 + 5 × 3 giving VA = - 7.5 kN
showing that VA acts vertically downward.
Similarly, considering the vertical equilibrium of the frame VA + VD = 0.
∴ VD = 7.5 kN acting upwards (↑) The reactions are shown in Figure.
The BM and SF diagrams are shown in Figures (a) and (b), respectively.
Figure