Q1. Determine the moments and axial forces that must be used for the design of the column AB of the unbraced frame shown. Thereafter select the reinforcing needed for the rectangular column AB. The member size, factored axial forces and moments are shown in the figures. f΄c= 28 MPa and fy=414 MPa.
Consider the loading case (U=1.2 D + 1 L + 1 W). k is to be calculated by the equations.
Wu=1.2 D + 1 L = 100 kN/m