2 3 governs materials and assemblies used for structural fire resistance and fire rated separation of.
2 hr fire rated cmu wall.
The standard is used to hourly fire rating and to indicate wall s its durability during a fire.
Fire resistance rating or fire rating is defined as the duration of time that an assembly roof floor beam wall or column can endure a standard fire as defined in astm e 119 3.
Fire resistancerated wall assembliesare commonly evaluated using astm standard e 119 ref.
Concrete masonry is widely specified for fire walls and fire barriers because concrete masonry is noncombustible provides durable fire resistance and is economical to construct.
Chapter 7 of the international building code ibc refs.
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.
The hose stream test provides a meaningful measure of.
Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.
Mount a 1 1 2 inch fiberglass barrier inside the studs.
2 hour fire rating.
Table 1 required fire wall fire resistance ratings ref.
The fire resistance rating of concrete masonry walls depends on the type of aggregate used in the units.
Structural function or both.
Use special fiberglass rated for use in firewalls.
These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu.
The american society for testing and materials and underwriters laboratory both have specifications for.
Expanded slag or pumice 4 7 4 5 4 4 4 2 4 0 3 8 3 6 3 4 3 2 3 0 2 7 2 5 2 1 1 9 1 5 a fire resistance rating between the hourly fi re resistance rating periods listed may be determined by linear in terpolation based on the equivalent thickness value of the concrete masonry unit.
A wall tested according to e 119 undergoes both fire exposure and water hose stream testing.
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.
Accepts no responsibility for proper application of the rated wall assembly above or responsibility for the construction of such assemblies.
Fire resistance rating of cmu finish table 721 3 2.
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.
B for group h 1 h 2 or continue reading detailing concrete masonry fire walls.
