A floor system supporting a 6 in. concrete slab is shown in Figure P11.4. The live load is 100 psf. Using LRFD, considering bending only select the most economical sections for: 1. The typical beam of A992 steel. 2. The typical girder of A992 steel. The concrete floor provides full lateral support for the compression flange for both the beams and the girders. Assume the weight of concrete for slab = 150 lb/ft^3

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