1. (a) Determine the reactions and all bar forces of the three-hinged, trussed arch in Figure…

1. (a) Determine the reactions and all bar forces of the three-hinged, trussed arch in Figure P6.27 for the following cases: Case A: Only the 90-kN force at joint D acts. Case B: Both the 90-kN and 60-kN forces at joints D and M act.

(b) Determine the maximum axial force in the arch in Case B.

2. Establish the funicular arch for the system of loads in Figure P6.28, if the maximum allowable compressive force in the arch is 85 kips.

 

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