2 Hour Fire Rated Wall Assembly

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.

2 hour fire rated wall assembly.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. American softwood lumber standard ps 20. Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies.

Descriptions of successfully tested i joist floor as. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Use special fiberglass rated for use in firewalls. 2 hour fire rating.

19 1 mm air space cover the h studs and c tracks by gypsum board battens. The fire rating of the wall assembly is the lower of the two. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. Line or at the parapet and at the ends of walls.

Concrete masonry unit. There are many ways to meet the requirements for 2 hour fire rated separation walls including foundation to roof masonry walls separating the units. 2 hour exterior wall assembly ul design no. 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.

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. When you cannot maintain a minimum 3 4 in. 19 1 mm air space between the h stud assembly and any adjacent framing members. Typically for an exterior wall with a fire separation distance greater than 5 ft 1 524 mm fire needs be considered on the interior side only.

An increasingly common and popular method is the gypsum area separation wall which consists of individual stud framed walls filled with fiberglass insulation for each housing unit which are separated by a special construction that consists of. Mount a 1 1 2 inch fiberglass barrier inside the studs. V337 2 hour interior wall assembly ul design no.