Architectural · A-A6X9Z

Three-Hour Rated Interior Partition with Concrete Wall

Materials

Concrete Timber / Wood Gypsum / Drywall EIFS / Plaster / Stucco

Elements

About this detail

This three-hour rated assembly transitions from an exterior concrete wall with cement plaster and rigid insulation to an interior metal stud partition. The exterior buildup features a twelve-inch thick concrete wall, a fluid-applied water-resistive barrier system, rigid insulation, a water-resistive barrier system, lath with cement plaster, and one layer of five-eighths-inch Type X gypsum board with a fire rating. The interior side consists of one-and-five-eighths-inch steel studs with insulation where occurs, faced with two layers of three-quarter-inch Type X gypsum board on both sides, conforming to Gypsum Association File Number WP 2930 and CBC Table 721.1(2).

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