Structural · S-JTHFZ

Typical Floor Penetration Reinforcement

Materials

Concrete Steel Metal (misc.)

Elements

Floors / Slabs Decks Arches Reinforcing Roof / Floor Openings

Connections

Deck Attachment

About this detail

Reinforcement requirements for floor and roof penetrations in a composite steel deck and concrete slab system comprise steel framing members including W10x12 beams supporting the concrete slab, with sizing criteria ranging from zero to over two feet based on opening dimensions. Holes less than six inches generally require no reinforcement, while larger openings necessitate specific supplementary steel and reinforcing bars. One number four bottom bar is placed on each side parallel to the deck with two inches of clearance, and number four bars measuring four feet long are set at all openings, blockouts, and slab corners with one inch of clearance to the top of the slab. Metal deck closures are provided per the manufacturer's specifications. Plan notes require blocking out openings before placing concrete, removing blockouts and cutting the deck after the concrete cures, and coordinating sizes and locations with mechanical, electrical, and architectural drawings.

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