Electrical · E-A4NAE

Penetration Thru Gypsum Board Wall

Materials

Concrete Steel Timber / Wood Gypsum / Drywall

Elements

About this detail

Firestop penetration assemblies accommodate steel pipe, conduit, or wiremold passing through a one-hour gypsum board wall assembly and a fire-rated concrete wall. The gypsum wall penetration, designated as UL detail WL1001, accommodates a maximum 4-inch diameter steel pipe, conduit, or wiremold with a 5/16-inch maximum annular space sealed with 3M fire barrier CP 25 caulk. The concrete wall penetration, designated as UL detail CAJ1044, accommodates a steel pipe, conduit, or wiremold with a 1-3/8-inch maximum annular space packed with packing material and sealed with 3M fire barrier CP 25WP caulk to a depth of 1 inch.

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