1. Determine the location of the plastic neutral axis and the available moment strength for a…

1. Determine the location of the plastic neutral axis and the available moment strength for a fiat soffit, fully composite beam composed of a W18x71spanning18 ft and spaced 5 ft on center, supporting a 4-in. concrete slab. Use f’c  = 4 ksi and A992 steel. Determine (a) design strength by LRFD and (b) allowable strength by ASD.

2. Determine the location of the plastic neutral axis and the available moment strength for a fiat soffit, fully composite beam composed of a Wl4x43 spanning 20 ft and spaced 5 ft on center, supporting a 4-in. concrete slab. Use f’c  = 3 ksi and A992 steel. Determine (a) design strength by LRFD and (b) allowable strength by ASD.