Design the necessary reinforcement for a typical interior beam. The floor system consists of 3-in. slabs. The beams have a web width, bw, of 14 in., flange width, be, of 50 in. and an effective depth, d. of 15.5 in. The factored applied moment on the beam is 400 K - ft. Use f 'c = 3 ksi and fy =60 ksi. (CLO 3)*