Civil engineer

Theory structure

Please please answer this question at one hour?

The beam

hinged at $(A)$ and voller at $(B,C),$ It has an internal hinge at $(D),$ Draw the influence For

i$-$ The reation $($B$)$

ii$-$ The shear force at point $($P$)$

iii$-$ The bending moment at point $(P)$

iv $-$ The bending moment at $($B$)$