TIMESAVING DESIGN AIDS

TIMESAVING DESIGN AIDS
Two-Way Slabs
Portland Cement Association
Page 1 of 7
The following example illustrates the design methods presented in the article “Timesaving Design Aids for Reinforced Concrete, Part 2: Two-way Slabs,” by David A. Fanella, which appeared in the October 2001 edition of Structural Engineer magazine. Unless otherwise noted, all referenced table, figure, and equation numbers are from that article.
Example Building
Below is a partial plan of a typical floor in a cast-in-place reinforced concrete building. In this example, an interior strip of a flat plate floor system is designed and detailed for the effects of gravity loads according to ACI 318-99.
20′-0″
20′-0″
20′-0″

24′-0″
24′-0″
20″x 20″ (typ.)
24″x 24″ (typ.)

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