Structural · S-FT372

Floor Deck Opening Framing and Reinforcing Conditions

Materials

Concrete Reinforced Concrete Steel Metal (misc.)

Elements

Beams Floors / Slabs Decks Anchors / Embeds Reinforcing Roof / Floor Openings

Connections

Bolted Connection Deck Attachment Timber / Mass-Timber Connection

About this detail

These structural framing details show requirements for cored and formed floor slab openings over metal deck. Condition B uses an L2 1/2 x 2 1/2 x 1/4 angle attached to the deck using one-half-inch diameter Simpson Titen HD screws, Powers wedge bolts, or Hilti Kwik Bolt expansion anchors spaced at twelve inches on center with four-inch maximum embedment, installed before coring. Condition C utilizes a C3x6 channel installed before the concrete pour with one-eighth-inch clearance adjacent to each web and three full flute lengths extending six to twenty-four inches on each side. Groups of formed or cored openings require reinforcing when spacing dimensions A and B are less than thirty-two inches or less than four times the larger opening dimension. Unreinforced conditions allow up to five-inch diameter maximum holes at cored or drilled locations where spacing rules are met.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details