Question

Design a reinforced concrete beam that has a rectangular cross section with a width b = 24 in. The

depth h is limited by architectural reasons to 16 in. It has to carry a factored moment Mu = 360 kip-

ft. including the self-weight. The design should satisfy ACI 318 for tension controlled members.

Use Grade 60 steel and a specified concrete compressive strength

= 4,000 psi. Determine the

flexural reinforcement for the beam, and use compression steel if needed. Allow 3 in. to the center

of the bars from the tension or compression face of the beam. The beam has No. 4 stirrups. Show

a sketch of the beam cross section. The clear spacing between the longitudinal bars should be no

less than 1 in. and the minimum concrete cover is 1-1/2 in.

Answer 1