2 Hr Fire Rated Wall Construction

American softwood lumber standard ps 20.

2 hr fire rated wall construction. 50 8 mm light gauge steel h studs that secure two layers of 1 in. There are many ways to meet the requirements for 2 hour fire rated separation walls including foundation to roof masonry walls separating the units. Mount a 1 1 2 inch fiberglass barrier inside the studs. Stratawall shaft wall cinema wall and securitywall.

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. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. As applied to 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. Use special fiberglass rated for use in firewalls.

According to the engineered wood association a one hour rating indicates that a wall constructed in a manner similar to the one tested will contain flames and high temperatures and support its full load for at least one hour after the fire begins. 25 4 mm shaftliner panels friction fit between studs and a minimum 3 4 in. If a conventional 1 2 inch thick sheet of drywall will stand up to 30 minutes of fire then the added 1 8 inch found in the type x drywall along with its other properties will double your margin of safety to 60 minutes. The 2 hour area separation wall system is a 2 hour fire wall consisting of 2 in.

19 1 mm air space on each side. Dens solutions are industry trusted high performing fiberglass mat gypsum panels suitable for your wall roof ceiling and floor projects. Densglass sheathing adds performance and durability to a wide range of fire rated and non fire rated building assemblies. 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.

Descriptions of successfully tested i joist floor as. For this reason a fire rated drywall is sometimes called one hour fire wallboard. For class 2 to 9 buildings including multi residential and commercial buildings gyprock fire performance solutions include. Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test.

U419 july 12 2018 nonbearing wall ratings 1 2 3 or 4 hr see items 4 5 through 5k. See general information for fire resistance ratings can ulc s101 certified for canada design criteria and allowable variances design no.