Electrical · E-VKPJJ

Floor Box Detail

Materials

Steel Cold-formed Steel Timber / Wood Metal (misc.)Gypsum / Drywall

Elements

Partitions Ceilings Floors / Slabs Waterproofing / Flashing Connections / Plates Roof / Floor Openings

About this detail

A two-gang Wiremold Omnibox series 880C3S-1 floor box is installed within a finished concrete floor slab, housing four RJ45 jacks, one duplex twenty-amp single-pole receptacle, and an audio-visual back box beneath a brass power and tel/data cover plate. Conduits route from the box through recessed back boxes up toward the finished ceiling with associated bushings. A nominal four-inch electrical metallic tubing sleeve penetrates a one-hour rated gypsum wall board and metal stud partition concentrically, rigidly supported on both sides. The annular space contains a minimum five-eighths inch thickness of UL-listed fire barrier sealant equal to STI SpecSeal LCI flush with both partition surfaces, conforming to UL-listed firestop system W-L-1049 for one and two-hour fire ratings. A continuous vapor barrier is maintained with foil tape applied to the conduit sleeve.

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