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Two-hour, three-hour, and four-hour rated walls require additional protection of penetrations, since they must resist higher temperatures than a one-hour rated wall, and for a...
Table 601 – Establishes hourly rating required for building elements based on Type of Construction. Table 602 – Establishes hourly rating required for exterior walls based on fire separation distance, type of construction and occupancy.
6 gru 2023 · 2-hour fire-rated wall: Apply four layers of ⅝" Type X gypsum board to one side. The details below show options for building UL design V497. Download a copy of V497 or visit the UL product IQ website. Photo credit: 1-800-NATIONAL.
16 sty 2023 · 2-hour area separation wall: Use light-gauge steel H-studs to friction fit two layers of Gold Bond® Shaftliner XP® or Gold Bond® eXP® Shaftliner panels between studs with a ¾" minimum of air space on each side.
USG provides resources here for our UL wall assemblies for seamless integration into any construction project. These wall assembly files are used for planning and estimation purposes for many UL wall types, such as fire-rated wall assemblies.
• Fire protection rating – The period of time that an opening protective assembly will maintain the ability to confine a fire as determined by tests prescribed in Section 715. Ratings are stated in hours or minutes. • NFPA 252, NFPA 257
3 sty 2012 · Use thicker drywall for a two-hour rating, if double-sheeting is not an option, with fire-resistant insulation between the wall studs. Cover wood-framed walls with a single layer of 3/4-inch Type X drywall rated for 120 minutes of fire resistance.
