Architectural · A-7EP76

Rated Duct Enclosure

Materials

Cold-formed Steel Gypsum / Drywall Timber / Wood

Elements

About this detail

The duct enclosure is constructed with two and one-half inch J-track fastened to the rated floor assembly at twenty-four inches on center maximum, with sealant applied at the junction. Two and one-half inch and four-inch C-H studs at twenty-four inches on center frame the one-inch shaftliner and five-eighths-inch Type-X gypsum board layers. Additional layers of gypsum board are added to the sides and bottom to achieve the two-hour fire rating, secured with two number-10 pan head screws per stud. J-tracks are fastened to studs at twenty-four inches on center maximum. The adjacent wall assembly maintains a rating matching the enclosure, and tested UL assemblies include U497 for vertical applications and G586 for horizontal applications.

Members view this detail in full resolution, download the CAD files (SVG, PDF), and can adapt it in the built-in CAD editor — export DXF, DWG, or PDF.

Start membership

Similar details