1 Hour Fire Rated Wall Assembly With Plywood

To confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies.

1 hour fire rated wall assembly with plywood.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 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. What you ll eventually learn is that the easiest place to design your own 1 hour assembly is section 721 6 of the international building code. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

Fire rated assemblies are tested and certified in their entirety. Figure 1 is a modified version of ul design u301. 2 1 3 4 2. Assembly 15 1 6 which can be found in ibc table 720 1 2 is also shown.

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. Objectives framing on the legacy village at castle pines began in march 2017 and the project is scheduled for completion in january 2018. Lp flameblock is an icc es evaluated component of 1 and 2 hour fire rated wall assemblies and roof deck applications. Fire rated wood frame wall and floor ceiling assemblies 5 ws4 1 1 one hour fire resistive wood frame wall assembly 2x4 wood stud wall 100 design load astm e 119 nfpa 251.

The section details the procedures for calculating fire resistance of walls. 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. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Ratings for these two hour assemblies are from both sides.

Lp wall assembly for this application has been allowed by building code officials common applications. It combines flame spread and burn through resistance to give your customers. Framing nominal 2x4 wood studs spaced 16 in. This assembly has been modified by adding pyro guard plywood to the exterior side of the wall.

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.