Architectural · A-Z4EXN

Slab Edge At Rated Wall

Materials

Concrete Steel Cold-formed Steel Timber / Wood Metal (misc.)Gypsum / Drywall

Elements

Beams Walls Floors / Slabs Decks Insulation Connections / Plates

About this detail

A concrete slab over metal deck bears on a steel beam with spray-applied fire proofing, maintaining a two-inch gap at a mechanical or elevator shaft wall. The shaft wall utilizes six-inch metal stud framing at sixteen inches on center, typical, with one-inch shaft liner and two layers of five-eighths-inch type X gypsum board on the shaft side. The floor slab edge meets the shaft wall with a continuous steel bent plate and fire-rated sealant as required for a one-hour Underwriters Laboratories rating. Mineral wool fire-safing insulation fills the cavity between the continuous steel plate and the beam flange, with mineral wool packed into the deck flutes. The lower wall assembly features six-inch metal stud framing at sixteen inches on center, acoustical batt insulation filling the full thickness of the stud, and single layers of five-eighths-inch type X gypsum board.

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