Structural · S-DK2NN

Reinforcing at Metal Deck Slab Openings and Depressions

Materials

Concrete Metal (misc.)Reinforced Concrete Steel

Elements

Decks Floors / Slabs Reinforcing Roof / Floor Openings

Connections

Deck Attachment

About this detail

Concrete slab openings and depressions require specific reinforcing bars placed around their perimeters and corners to maintain structural integrity. One number five bar is provided on each side for openings under two feet and all depressions, while two number five bars are used on each side for openings over two feet, unless the opening or depression is less than one foot in both directions. One number four by six-foot diagonal bar is placed at each corner of the opening or depression, which is omitted if the opening or depression is under two feet in both directions. Standard hooks terminate the bars at the edge of the slab, and edge angles are provided where required.

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