The floor system of an apartment building consists of a 4-in.-thick reinforced concrete...

The floor system of an apartment building consists of a 4-in.-thick reinforced concrete slab resting on three steel floor beams, which in turn are supported by two steel girders, as shown in Fig. P2.5. The areas of cross section of the floor beams and the girders are 18.3 in.² and 32.7 in.², respectively. Determine the dead loads acting on the beam CD and the girder AE.