2 Hour 1 Hour Fire Rated Wall Assembly

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

2 hour 1 hour fire rated wall assembly.

Commonly used fire rated designs for stud walls are ul u309 a 1 hour assembly and ul u301 a 2 hour assembly ul 2013a 2013b. 2 x 4 f d 24 o c shear wall 1 2 plywood common wall 7 8 redwood roxul mineral wool batts finish wall 3 4 plywood. Fire safety caution passing a fire test in a controlled laboratory setting and or certifying or labeling a product as having a one hour two hour or any other fire resistance or protection rating and therefore as acceptable for use in certain fire rated assemblies systems does not mean that either a particular assembly system incorporating the product or any given piece of the product. Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test.

Lumber shall be identified by the grade mark of a lumber grading or inspection agency that has been approved by an accreditation body that complies with the. Head of wall firestop system gypsum board fire trak shadowline. Mount a 1 1 2 inch fiberglass barrier inside the studs. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies.

Use steel studs and two layers of 1 2 inch type c drywall on each side of the studs for a two hour fire rating on an interior wall. Use special fiberglass rated for use in firewalls. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. A portion of the building has 2 hour load bearing walls with 1 hour walls stacked on top.

2 x 6 wood studs 16 o c 3 4 plywood. Ul design u499 w419. American softwood lumber standard ps 20. Assembly ff file no.

Given the expense of test. Dwight miller associate principal at lantz boggio architects was seeking wall assembly solutions that would provide a consistent plane across both 1 hour and 2 hour fire rated wall assemblies. Also cites circumstances requiring 1 and 2 hour rated walls and until now typical rated wood frame stud walls have been used to meet those needs. Sw 106 1 hour shaftwall with deflection track.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.