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.
Interior 1 hour fire rated wall assembly.
Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies.
Intertek design lpb wpps 60 01 this intertek listed assembly is commonly used in 1 hour exterior walls along the property line including single family construction.
Descriptions of successfully tested i joist floor as.
Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.
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.
Two doors each with a fire protection rating of 1 1 2 hours installed on opposite side of the same opening in a fire wall shall be deemed equivalent in fire protection rating to one 3 hour door.
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.
It also allows for the use of fiberglass insulation.
For testing requirements see section 715 4 3.
These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.
The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.
Tested lumber wall assemblies are provided in table 1 for one hour fire resistance rated wall assemblies and table 2 for two hour fire resistance rated wall assemblies.
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.
Use special fiberglass rated for use in firewalls.
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.
Mount a 1 1 2 inch fiberglass barrier inside the studs.
Type x gypsum board is wallboard to which non combustible fibers have been added.
This assembly is fire rated for 1 hour from both sides.
The fire rating of the wall assembly is the lower of the two.
This ul listed assembly is commonly used in type v multifamily construction in load bearing exterior walls.
