2 Hour Fire Rated Wall Construction

The bca includes requirements for fire performance of walls and ceilings to help ensure occupant safety in the event of a fire.

2 hour fire rated wall construction.

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. There are many ways to meet the requirements for 2 hour fire rated separation walls including foundation to roof masonry walls separating the units. Building and structural firewalls in north america are usually made of concrete concrete blocks or reinforced concrete older fire walls built prior to world war ii used brick materials. 19 1 mm air space on each side.

Gyprock has developed a broad range of fire rated systems to help specifiers and builders meet the bca requirements with confidence. 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. For this reason a fire rated drywall is sometimes called one hour fire wallboard.

50 8 mm light gauge steel h studs that secure two layers of 1 in. Penetrations penetrations through fire walls such as for pipes and cables must be. 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. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall 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. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 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.

All other building classes including. Class 2 to 9 buildings. Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test. American softwood lumber standard ps 20.

Mount a 1 1 2 inch fiberglass barrier inside the studs. 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. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. 25 4 mm shaftliner panels friction fit between studs and a minimum 3 4 in.