Interior 1 Hour Fire Rated Wall Assembly

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.

Interior 1 hour fire rated wall assembly.

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. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. 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. It also allows for the use of fiberglass insulation.

The fire rating of the wall assembly is the lower of the two. 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. 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.

Descriptions of successfully tested i joist floor as. 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. American softwood lumber standard ps 20. Type x gypsum board is wallboard to which non combustible fibers have been added.

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. Type of assembly required assembly rating hours minimum fire door fire assembly fire. For testing requirements see section 715 4 3.

Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. This ul listed assembly is commonly used in type v multifamily construction in load bearing exterior walls. Use special fiberglass rated for use in firewalls. 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 american.

Mount a 1 1 2 inch fiberglass barrier inside the studs.