(Solved): 2. Select the most economical W-shape of A992 steel for the beam subjected to the factored loads sho ...

2. Select the most economical W-shape of A992 steel for the beam subjected to the factored loads shown in Figure 2(a). Neglect the self-weight of the beam. You don't have to check shear and deflection. The moment diagram is provided in Figure 2(b). Note that Segment CD is a cantilever with an unbraced free end. Refer to AISCM Section F1(c) to determine the C_(b) values to be used in Parts (A) and (B) below. (A) Select the lightest W -shape if the beam is laterally braced at points A,B, and C . (B) Select the lightest W -shape if the beam is laterally braced at the supports (i.e., points A and C ) only.