The floor system of a hospital operating room consists of a…

The floor system of a hospital operating room consists of a 3-inch-thick reinforced concrete slab resting on three steel floor beams, which are in turn supported by two steel girders. The areas of cross section of the floor beams and the girders are 19.2 in.2 and 31.8 in.2, respectively. Determine the live load acting on beam EF.