Extracted text: Question 4) Check the maximum permissible A, to ensure ductile behavior. Compute the design moment strength øMn. Use fy = 60000 psi and f = 4000 psi. %3D -6 in.- 3 in. 2 #9 6 in. 12 in, 30 in. 6 in. 5 #11 3 in. 3 in. +4 @ 3 in. = 12 in. +3 in. 18 in.-