Architectural · A-ET675

Rated Partition Head at Structural Steel Beam

Materials

Concrete Steel Timber / Wood Gypsum / Drywall

Elements

Beams Walls Decks Anchors / Embeds

Connections

Deck Attachment Embed Plate

About this detail

Head-of-wall fireproofing and deflection connection for a rated gypsum board partition intersecting a structural steel floor beam. The structural steel beam carries a concrete fill over metal deck assembly, with sprayed-on fireproofing applied to both the deck and the beam. A continuous metal top runner track with slotted legs is attached to metal Z-clips spaced at twelve inches on center using minimum one-eighth-inch powder-actuated fasteners with half-inch embedment. Gypsum board is fastened to the metal studs on both sides of the partition, stopping a minimum of half an inch below the metal top runner track to allow for vertical deflection. A continuous twenty-five gauge metal angle with galvanized expanded metal lath is secured with fasteners at sixteen inches on center. Acoustic insulation is provided within the stud cavity as scheduled, and the assembly complies with specified head-of-wall fire test standards including UL 2079 and ASTM E 1966.

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