Architectural · A-QW58Y

Fire-Rated Gypsum Board Partition Cable Penetration Detail

Materials

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Cable and cable bundle penetrations through a two-hour rated gypsum board partition feature two distinct installation options. Option 1 features an opening sized to fit the cable bundle directly, utilizing a minimum one-inch thick fire-rated sealant and an aluminum-faced intumescent wrap measuring at least one-quarter inch by two inches and projecting three-quarters of an inch from the face of the partition. Option 2 utilizes a twenty-eight gauge sheet metal sleeve with a maximum four-inch diameter, packed with a minimum one-inch thick fire safing insulation and sealed with a minimum one-inch thick fire-rated sealant around the cable bundle. The annular space for Option 2 ranges from one-half inch to three-quarters of an inch, with a one-quarter inch diameter fire-rated sealant bead around the sheet metal sleeve overlapping the gypsum board by one-quarter inch. UL listings include UL W-L-3030 for Option 1 and UL W-L-3032 for Option 2, or equivalent.

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