A rectangular beam has a cross section of b = 14 in., h = 28…
A rectangular beam has a cross section of b = 14 in., h = 28 in., and d = 25.5 in. It is reinforced with four No. 5 Grade 60 bars. The concrete strength is 4,300 psi (normal weight). The beam has Grade 60 No. 3 stirrups. Determine the assumed modulus of elasticity of the concrete, Ec.