Structural · S-WDMR8

Slab Opening Less Than Two Feet Wide in Metal Deck

Materials

Elements

Beams Decks Reinforcing Roof / Floor Openings

About this detail

Reinforcement surrounds small slab and roof openings less than two feet wide cut into a concrete-filled metal deck. Additional number 3 reinforcing bars extend one foot six inches minimum past each edge of the opening, with number 4 bars three feet long placed diagonally at each corner. A channel section designated as C4x5.4 is placed open side up on top of the deck, extending three deck high flutes past the opening typically. Openings must be blocked out with the deck left intact prior to the concrete pour, after which the deck may be removed once cured.

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