Architectural · A-REK8J

Partition Head Detail at Metal Deck Parallel Run

Materials

Concrete Timber / Wood Glass / Glazing Metal (misc.)Gypsum / Drywall

Elements

Walls Partitions Decks Insulation

Connections

Deck Attachment

About this detail

Head-of-wall connection for metal stud partitions running parallel to a concrete-filled metal deck. Mineral wool is packed fully into the metal deck flutes above the slip track, and a gap of three-quarters of an inch maximum is maintained between the top of the stud and track. The gypsum board is scribed or castle-cut to match the profile of the metal deck and stopped short of the deck. Backer rod and joint sealant are installed at the partition joint, utilizing white sealant for non-rated partitions and red fire sealant at rated partitions. Alternatively, a spray sealant head joint is specified using white smoke or acoustic spray for non-rated conditions and red fire spray for rated assemblies. A twenty gauge by four inch wide metal strap is secured to the deck at twenty-four inches on center where the wall aligns with the lower flute, and the track is fastened to the strap with sheet metal screws.

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