The three-hinged trussed arch shown in the figure supports the symmetric loading. Determine the required height of the joints B and D, so that the arch takes a funicular shape. Member HG is intended to carry no force. 5k 5k 5k 5k 5k J H G F A B h₁ D 15 ft h₁ 10 ft- -10 ft- -10 ft- -10 ft- E The suspension bridge in Fig. 5-6a is constructed using the two stiffening trusses that are pin connected at their ends C and supported by a pin at A and a rocker at B. Determine the maximum tension in the cable IH. The cable has a parabolic shape and the bridge is subjected to the single load of 50 kN. D E H 8 m 6 m A B FG C 50 kN 4@3 m = 12m4@3 m = 12 m