The three power lines exert the forces shown on the truss joints, which in turn are pin-connected to the poles AH and EG. Determine the force in the guy cable AI and the pin reaction at the support H.

Units Used:

kip = 103 lb

Given:

F1 = 800 lb d = 125 ft

F2 = 800 lb e = 50 ft

a = 40 ft f = 30 ft

b = 20 ft g = 30 ft

c = 20 ft

F2 G.