A concrete floor slab features a depression of depth D up to nine inches max, supported by a structural steel beam carrying metal deck. Additional reinforcement includes number four bars at six inches spacing with a minimum of three number four bars, two number four continuous bars at the lower step, and number four bars at eight inches spacing for additional reinforcement. One continuous number four bar is added for depressions greater than four inches. The steel beam connection includes angles and welds sized at one-quarter inch by three-12 typically, and one-quarter inch by six typically at ends, with metal deck direction per plan.
ANGLE AND WELDS PER STEEL BEAM PER PLAN CL (MIN 12") 3D 1/4 3-12 TYP 1/4 3-12 1/4 6 1/4 6 TYP AT ENDS 9" MAX D (2)#4 CONT ADDITIONAL (1)#4 CONT FOR D>4" #4@8" ADDITIONAL REINFORCEMENT SEE PLAN FOR DIRECTION OF THE METAL DECK # 4 @6" (MIN (3)-#4) 1 S0.45
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