Architectural · A-9ST93

Rated Partition Head of Wall at Concrete Structure

Materials

Concrete Steel Timber / Wood Gypsum / Drywall

Elements

Walls Partitions Insulation Anchors / Embeds

Connections

Embed Plate

About this detail

A fire-rated partition head condition meets an overhead concrete structure, providing a deflection gap to accommodate structural movement. A continuous one-and-a-half by one-and-a-half inch twenty-five gauge metal angle is attached to the concrete with fasteners at twelve inches on center. A twenty gauge minimum metal top runner track features two-and-a-half inch long slotted legs and is secured using a minimum one-eighth inch power-driven fastener at twelve inches on center with one inch minimum embedment. Five-eighth inch Type X gypsum board baffles are installed on both sides of the partition, attached to the metal angle with fasteners at twelve inches on center. The main gypsum board layers on both sides of the partition are fastened to metal studs only, terminating a minimum of one-half inch below the metal top runner track. Acoustic insulation is included within the stud cavity where scheduled, and the assembly complies with UL 2079, ASTM E 1966, ICBO-ER-5344, and ICC ESR-1042 ratings.

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