Architectural · A-DQH2K

Firestop Detail at Pipe and Conduit Wall Penetration

Elements

Walls Partitions Floors / Slabs Drainage

About this detail

A through-penetration firestop assembly occurs at a partition wall as defined on the floor plan. Firestopping sealant with a minimum five-eighths inch thickness of fill material is applied within the annulus, flush with both surfaces of the wall. At the point of contact between the pipe and wall, a minimum half-inch diameter bead of fill material is applied at the pipe-wall interface on both wall surfaces. Through-penetrants include PVC pipe up to three inches maximum for closed systems and two inches maximum for vented systems, OPVC pipe up to three inches maximum, rigid non-metallic conduit up to three inches maximum, electrical non-metallic tubing up to one inch maximum, and ABS pipe up to two inches maximum. The pipe or conduit must be rigidly supported on both sides of the wall and bear a UL listing mark.

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