Structural · S-D7DK6

Composite Deck Openings

Materials

Concrete Reinforced Concrete Composite

Elements

Decks Waterproofing / Flashing Reinforcing Roof / Floor Openings

Connections

Shear Stud / Composite Deck Attachment

About this detail

This structural detail outlines installation criteria and reinforcement guidelines for core drill holes and penetrations through composite metal deck and concrete slabs. Openings less than six inches in diameter cutting no more than one web require no reinforcement, while formwork, foam, or edge form flashing blocks out the void and cell closures dam the concrete until it reaches seventy-five percent of its specified compressive strength prior to field cutting the deck. Openings from six to twelve inches require steel angles placed on top of the deck and extended to fasten across three ribs beyond the opening. Openings between twelve and thirty-six inches require diagonal additional reinforcing bars per structural plans.

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