Structural · S-JETQG

Larger Rectangular or Square Openings in Metal Deck

Materials

Elements

Beams Ceilings Decks Reinforcing Roof / Floor Openings

About this detail

Installation requirements for rectangular and square openings in steel metal decking over a structural beam below. Tubes or alternate members such as channels and angles are placed on top of the deck, while reinforcing bars are added to the corners of openings above the tubes. Openings occurring in a single deck unit may be cut prior to pouring concrete, whereas openings cutting through multiple deck units require sleeves or bulkheads during the pour and must remain uncut until the concrete is placed and cured. Header beams are required around openings where the maximum dimension exceeds twenty-four inches.

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