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.
2 hour fire rated wall assembly.
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.
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.
These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.
Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies.
Descriptions of successfully tested i joist floor as.
Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies.
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.
V337 2 hour interior wall assembly ul design no.
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.
When you cannot maintain a minimum 3 4 in.
The fire rating of the wall assembly is the lower of the two.
2 hour exterior wall assembly ul design no.
19 1 mm air space between the h stud assembly and any adjacent framing members.
Line or at the parapet and at the ends of walls.
19 1 mm air space cover the h studs and c tracks by gypsum board battens.
The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.
Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.
Accepts no responsibility for proper application of the rated wall assembly above or responsibility for the construction of such assemblies.
Mount a 1 1 2 inch fiberglass barrier inside the studs.
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.
Use special fiberglass rated for use in firewalls.
For a 2 hour fire rated assembly without the need for battens maintain a minimum 3 4 in.
