6 a concrete wall is poured between to vertical forms of height h4 ft

Question

(6) A concrete wall is poured between to vertical forms of height H=4 ft and length is T=6 ft. The thickness of the wall is W=0.25 ft. The forms are supported by rods (the left one denoted by BC). The rods and forms a pin supported at A, B, and C. The specific gravity of the wet concrete is 2.2 and x=2.2 ft. Calculate the load in the supporting rod (2 force member) BC. (hint, draw a free body diagram of the form wall AB and assume the wall is pinned at the base)