2 Hr Fire Rated Concrete Wall

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.

2 hr fire rated concrete 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. Structural function or both. 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. The ratings relate to fire tests designed to determine how quickly.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Chapter 7 of the international building code ibc refs. To confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies.

Hr hour ht height insul insulating or insulation int interior. The fire resistance rating of concrete masonry walls depends on the type of aggregate used in the units. C roof ceilings45 51 steel framed including steel bar joist framing. Single layer concrete walls floors and roofs.

The equivalent thickness of different types of concrete masonry is provided in the following. 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. 2 3 governs materials and assemblies used for structural fire resistance and fire rated separation of. The fire resistance rating of the wall shall not exceed the lower of the two values.

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. These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu. Accepts no responsibility for proper application of the rated wall assembly above or responsibility for the construction of such assemblies. Influence of fire on concrete structure.