2 Hr Fire Rated Wall Construction

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.

2 hr fire rated wall construction.

19 1 mm air space on each side. 25 4 mm shaftliner panels friction fit between studs and a minimum 3 4 in. 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. Mount a 1 1 2 inch fiberglass barrier inside the studs.

Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. Each system can be customised to provide the exact level of fire performance required and a range of acoustic and thermal performance to meet each specific. American softwood lumber standard ps 20.

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

There are many ways to meet the requirements for 2 hour fire rated separation walls including foundation to roof masonry walls separating the units. For this reason a fire rated drywall is sometimes called one hour fire wallboard. See general information for fire resistance ratings can ulc s101 certified for canada design criteria and allowable variances design no. Use special fiberglass rated for use in firewalls.

The 2 hour area separation wall system is a 2 hour fire wall consisting of 2 in. Fire ratedfire resistance ratings have long been used by ul astm and building codes to measure the performance of various constructions for fire containment purposes. For class 2 to 9 buildings including multi residential and commercial buildings gyprock fire performance solutions include. Descriptions of successfully tested i joist floor as.

U419 july 12 2018 nonbearing wall ratings 1 2 3 or 4 hr see items 4 5 through 5k. Stratawall shaft wall cinema wall and securitywall.