A beam has dimensions of b = 16 in., h = 22 in., and d = 19….
A beam has dimensions of b = 16 in., h = 22 in., and d = 19.5 in. and is reinforced with 3 No. 5 bars. The concrete strength is 4,600 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 0.891944 in. and the strain in the reinforcement is εs = 0.050781, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.