178
Overall Design of Horizontal Subsystems
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178
Overall Design of Horizontal Subsystems
FIGURE 6-13
SLAB AND BEAM DESIGNS MAY BE OF WOOD, STEEL, OR
ANY COMPATIBLE COM POSITE CONSTRUCTION.
(a) TIMBER-T AND G PLANKS OR PLYWOOD ON JOISTS
(b) SHEET STEEL (FOLDED) DECKING ON W STEEL BEAMS
(c) PC OR RC SLAB ON W STEEL BEAMS (WITH SHEAR STUDS)
When the slab bays are of nearly square shape, beams may be added in two
directions at the slab edges (Figure 6-14). In this instance, the slab is actually
supported on all four sides and nearly optimum two-way action can be achieved. As
a result, a relatively thin slab can be used because the load from the slab is
distributed to the beams at approximately one-half in each direction. A further
benefit when the bay is nearly square is that the beams