2 Hr Fire Rated Concrete Wall

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

2 hr fire rated concrete wall.

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. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Structural function or both. 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.

These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu. The fire resistance rating of reinforced and plain concrete walls floors and roofs depend on equivalent thickness of the element and can be found out using table 3. To confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. 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.

C roof ceilings45 51 steel framed including steel bar joist framing. The fire resistance rating of concrete masonry walls depends on the type of aggregate used in the units. Single layer concrete walls floors and roofs. 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 equivalent thickness of different types of concrete masonry is provided in the following. Influence of fire on concrete structure. The fire resistance rating of the wall shall not exceed the lower of the two values. The ratings relate to fire tests designed to determine how quickly.

Hr hour ht height insul insulating or insulation int interior. In the high rise hospital the columns might need a four hour rating whereas in the single story building exterior walls may need only a one hour rating. 2 3 governs materials and assemblies used for structural fire resistance and fire rated separation of. Chapter 7 of the international building code ibc refs.