Determine the required size (area, nominal diameter, and BarNo.) of the three reinforcing steel bars used in a 9 in. wide and12 in. deep concrete beam to assure the beam fails in compressionof the concrete and the steel reinforcement reaches its yieldstrength at the same load. Assume that the ultimate compressivestrength of the concrete is 4,000 psi and the yield strength of thesteel is 30,000 psi.
