1 Hour Fire Rated Wall Assembly With Plywood

According to the book commercial drafting and detailing a typical one hour fire rated wall consists of 2x4 studs spaced 16 inches from the center of one stud to the center of the next covered by 5 8 inch type x gypsum board.

1 hour fire rated wall assembly with plywood.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Lp flameblock is an icc es evaluated component of 1 and 2 hour fire rated wall assemblies and roof deck applications. Objectives framing on the legacy village at castle pines began in march 2017 and the project is scheduled for completion in january 2018. O c double top plates single bottom plate.

This assembly has been modified by adding pyro guard plywood to the exterior side of the wall. Lantz boggio architects used lp flameblock fire rated osb sheathing as a code compliant component of both 1 hour and 2 hour ul listed fire rated wall assemblies. The section details the procedures for calculating fire resistance of walls. To confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies.

Type x gypsum board is wallboard to which non combustible fibers have been added. Architects and contractors can spend a lot of time hunting for miscellaneous fire rated assemblies in wood construction. Two layers of 5 8 inch fire rated gypsum on the interior with steel framing or frt wood framing frt plywood exterior sheathing and 5 8 inch exterior fire rated gypsum such as gp densglass see u371. Lp wall assembly for this application has been allowed by building code officials common applications.

Ratings for these two hour assemblies are from both sides. Section 703 3 of the ibc allows. 2 1 3 4 2. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

Figure 1 is a modified version of ul design u301. It combines flame spread and burn through resistance to give your customers. Framing nominal 2x4 wood studs spaced 16 in. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

Go to work with a building solution that meets building code requirements for fire resistent construction while increasing structural ratings. Assembly 15 1 6 which can be found in ibc table 720 1 2 is also shown.