Additional reinforcing bars are placed around clustered openings in a concrete slab on steel deck, requiring one number four bar at six inches on center when dimension A is less than two feet or dimension B is less than one foot. Additional reinforcement is placed in the bottom flute for reinforcement parallel to flutes with three-quarters of an inch clear. A deck closure piece or formed edge is installed by the steel deck contractor, and the deck is cut at least seven days after the concrete is placed. Reinforcing bars feature a one foot six inch minimum typical or hook extension.
DECK CLOSURE PIECE BY STEEL DECK CONTRACTOR OR FORMED EDGE ADDITIONAL REINFORCEMENT SEE NOTE 4 PLACE ADDITIONAL REINFORCEMENT IN BOTTOM FLUTE FOR REINFORCEMENT PARALLEL TO FLUTES 2" TYPICAL 3/4" CLEAR DECK CLOSURE PIECE BY STEEL DECK CONTRACTOR OR FORMED EDGE ADDITIONAL REINFORCEMENT SEE NOTE 4 CUT DECK AT LEAST 7 DAYS AFTER CONCRETE IS PLACED "A" TYP OR HOOK 1' - 6"MINIMUM "B" 1#4 @ 6" OC WHEN "A" < 2'-0" 1#4 @ 6" OC WHEN "B" < 1'-0" 3/4" CLEAR B A STEEL DECK SPAN DIRECTION OPENING CLEAR DISTANCE TO ADJACENT A SECTION DECK CLOSURE PIECE BY STEEL DECK CONTRACTOR OR FORMED EDGE ADDITIONAL REINFORCEMENT SEE NOTE 4 PLACE ADDITIONAL REINFORCEMENT IN BOTTOM FLUTE FOR REINFORCEMENT PARALLEL TO FLUTES 2" TYPICAL 3/4" CLEAR DECK CLOSURE PIECE BY STEEL DECK CONTRACTOR OR FORMED EDGE ADDITIONAL REINFORCEMENT SEE NOTE 4 CUT DECK AT LEAST 7 DAYS AFTER CONCRETE IS PLACED "A" TYP OR HOOK 1' - 6"MINIMUM "B" 1#4 @ 6" OC WHEN "A" < 2'-0" 1#4 @ 6" OC WHEN "B" < 1'-0" 3/4" CLEAR B A STEEL DECK SPAN DIRECTION OPENING CLEAR DISTANCE TO ADJACENT A SECTION
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