Architectural · A-FXFMA

Horizontal Shaft Wall Detail

Materials

Steel Timber / Wood Metal (misc.)Gypsum / Drywall

Elements

About this detail

This assembly consists of a horizontal shaft wall constructed with 20 gauge steel J-runners anchored to the structure above using power-actuated fasteners. Four-inch 20 gauge C-H steel studs receive one-inch shaft wall liners and are faced with two layers of 5/8-inch Type X gypsum board. J-metal trim and fire-rated sealant are applied at transitions and joints. The framing contractor provides metal stud blocking within the cavity for positive attachment. Duct surfaces are incorporated within the framed enclosure per UL design U438 and ICC report NER-258.

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