Determine the epоxy mоdificаtiоn fаctor, ψe, for а rectangular beam with b = 17 in. and d = 20 in., five galvanized No. 9 Grade 60 tension-reinforcement bars placed in the bottom of the beam, and No. 4 Grade 60 stirrups located every 8 in. along the span. Assume 6,000-psi normal-weight concrete and a clear cover of 2 in.