2 Hr Fire Rated Brick Wall

These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu.

2 hr fire rated brick wall. The fire resistance rating of concrete masonry walls depends on the type of aggregate used in the units. Concrete masonry unit. 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. A 2 hour rating can be achieved by a wall with an equivalent thickness of as little as 3 1 5 inches when expanded slag or pumice is used or 4 1 2 inches when siliceous gravel is used as the aggregate.

For further information on fire resistance of brick see technical notes 16. For example for an 8 in. Use special fiberglass rated for use in firewalls. 13 mm a 1 in.

A fire resistance rating is based on a fire resistance period and usually given in half hour or hourly increments. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Table 720 1 2 of the international building code item numbers 1 1 1 through 1 2 1 can also be used to determine the minimum equivalent thickness for brick to achieve a fire rating from 1 to 4 hours. 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.

Mount a 1 1 2 inch fiberglass barrier inside the studs. It is also referred to as a fire rating fire resistance classification or hourly rating. U902 consists of a drainage wall with brick veneer and concrete masonry units and has a 4 hour rating. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

Westbrook block is a proud producer of underwriters laboratories ul approved fire rated cmu in both light weight and normal weight densities in 2 3 and 4 hour configurations. 25 mm thickness measured perpendicular to the face of the wall of ceramic fiber in the joint can be used in walls with fire resistance ratings up to 3 hours while a 2 in. As an example a wall with a fire resistance period of 2 hours and 25 minutes may only attain a fire resistance rating of 2 hours. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

Accepts no responsibility for proper application of the rated wall assembly above or responsibility for the construction of such assemblies. 2 hour fire rating. 203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in. U418 and u425 vary in rating between ã to 2 hours and are brick veneer drainage walls with steel studs and gypsum sheathing and wallboard.

51 mm thickness can be used.