Architectural · A-4BPJ4

Rated Partition Head at Structural Metal Deck Roof

Materials

Steel Timber / Wood Gypsum / Drywall

Elements

Walls Partitions Roofs Decks Insulation

Connections

Deck Attachment

About this detail

A fire-rated partition head terminates at a structural metal deck roof assembly with a deflection gap. The metal stud partition uses a minimum 20-gauge metal top runner track with two-and-one-half-inch slotted legs attached to eighteen-gauge metal Z-clips spaced at sixteen inches on center. Gypsum board is attached to the metal studs only, terminating a minimum of one-half inch below the top runner track. A continuous three-quarter-inch by one-inch by twenty-five-gauge metal angle with three-point-four-pound galvanized expanded metal lath attaches to the Z-clip with fasteners at sixteen inches on center. Sprayed-on fireproofing and roof insulation occur at the deck above, along with a sprayed-on fireproof gypsum deck flute closure. Acoustic insulation is included within the stud cavity as scheduled.

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