1. The floor system of a gymnasium consists of a 130-mm-thick concrete slab resting on four steel beams (A=9,100 mm) that, in turn, are supported by two steel girders (A = 25,600 mm), as shown in figure below. (use unit weight of reinforced concrete = 23.6 kN/m and steel = 77 kN/m) Steel floor beam (A = 9,100 mm) A Steel girder (A = 25,600 mm) D B Steel column 130 mm 10 m concrete slab E F G 3 at 5 m = 15 m Determine the following: a. Dead load acting on beam BF b. Dead load acting on girder AD c. Reaction force at B d. Reaction force at A e. Reaction force at G f. Reaction force at C