Determine the lightweight modification factor, λ, for a rect…
Determine the lightweight modification factor, λ, for a rectangular beam with b = 17 in. and d = 21 in., three galvanized No. 6 Grade 60 tension-reinforcement bars placed in the top of the beam, and No. 3 Grade 60 stirrups located every 8 in. along the span. Assume 5,000-psi lightweight concrete and a clear cover of 2 in.