2 Hr Fire Rated Cmu Wall

Fire resistancerated wall assembliesare commonly evaluated using astm standard e 119 ref.

2 hr fire rated cmu wall.

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. 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. Mount a 1 1 2 inch fiberglass barrier inside the studs. The standard is used to hourly fire rating and to indicate wall s its durability during a fire.

The fire resistance rating of concrete masonry walls depends on the type of aggregate used in the units. B for group h 1 h 2 or continue reading detailing concrete masonry fire walls. 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.

A wall tested according to e 119 undergoes both fire exposure and water hose stream testing. 2 hour fire rating. 1 groupfire resistance rating hr a b e h 4 i r 1 r 2 u3a f 1 h 3b h 5 m s 13 h 1 h 24b f 2 s 2 r 3 r 42 a walls shall not be less than 2 hour fire resistance rated where separating buildings of type ii or v construction. 2 3 governs materials and assemblies used for structural fire resistance and fire rated separation of.

Table 1 required fire wall fire resistance ratings ref. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu. Structural function or both.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Fire endurance of structures figure 5 shows the effect of fire on the resistance of a simply supported reinforced concrete. The american society for testing and materials and underwriters laboratory both have specifications for. 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.

Use special fiberglass rated for use in firewalls. Chapter 7 of the international building code ibc refs. 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.