2 Hr Fire Rated Concrete Wall

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 hr fire rated concrete wall. Use special fiberglass rated for use in firewalls. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. For a wall having no finish on one side or different types or thicknesses of finish on each side the calculation procedures of sections 722 2 1 4 1 and 722 2 1 4 2 shall be performed twice assuming either side of the wall to be the fire exposed side. The fire resistance rating of the wall shall not exceed the lower of the two values.
2 3 governs materials and assemblies used for structural fire resistance and fire rated separation of. 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. Single layer concrete walls floors and roofs. 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.
2 hr 2 hr top and bottom of wall joint for concrete over metal deck simplified drawing 2 29 16 2 hr 2 hr top and bottom of wall joint for flat deck simplified drawing 6 7 16 dwg pdf non fire rated smoke partition cp 506 smoke and acoustic sealant comprehensive drawing 8 26 15. Minimum slab thickness inches for fire resistance rating of 1 hour 1 5 hour 2 hour 3 hour 4 hour siliceous 3 5 4 3 5 0 6 2 7 0 carbonate 3 2 4 0 4 6 5 7 6 6 sand lightweight 2 7 3 3 3 8 4 6 5 4 lightweight 2 5 3 1 3 6 4 4 5 1 reinforced concrete also must meet cover protection requirements to maintain structural fire resistance. The equivalent thickness of different types of concrete masonry is provided in the following. Chapter 7 of the international building code ibc refs.
Accepts no responsibility for proper application of the rated wall assembly above or responsibility for the construction of such assemblies. 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. Fire endurance of structures figure 5 shows the effect of fire on the resistance of a simply supported reinforced concrete. The fire resistance rating of concrete masonry walls depends on the type of aggregate used in the units.
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. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.