A beam has dimensions of b = 14 in., h = 28 in., and d = 25….
A beam has dimensions of b = 14 in., h = 28 in., and d = 25.5 in. and is reinforced with 5 No. 8 bars. The concrete strength is 9,400 psi, and the yield strength of the reinforcement is 60,000 psi. If the depth of the compressive stress block is a = 2.11872 in. and the strain in the reinforcement is εs = 0.020469, determine the strength φMn for this beam. Assume the transverse reinforcement is not spirals.