Design the rigid highway bridge frame structure shown in Figure P5-71 for a moving truck load (shown below) simulating a truck moving across the bridge. Use the load shown and place it along the top girder at various locations. Use the allowable stresses in bending and compression and allowable deflection given in the Standard Specifications for Highway Bridges, American Association of State Highway and Transportation Officials (AASHTO), Washington, D.C. or use some other reasonable values.

- 25 ft 25 ft 50 ft 15 ft 10 ft 0.2 W 0.8 W 14 ft - W = total weight of truck and load 32 k H20 - 44 8 k H truck loading