4 Hour Fire Rated Concrete Wall

Westbrook block is a proud producer of underwriters laboratories ul approved fire rated cmu both light weight and normal weight densities in 2 3 and 4 hour configurations.

4 hour fire rated concrete wall. 2 partitions general information introduction. Structural function or both. 25 mm thickness measured perpendicular to the face of the wall of ceramic fiber in the joint can be used in walls with fire resistance ratings up to 3 hours while a 2 in. For the least fire resistant cast in place concrete that is concrete made with siliceous or what they call group ii aggregates the rating is 4 hours for a cast in place wall 7 1 2 inches thick.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 4 hour rating requires a 6 deep lightweight unit 4 hour rating requires an. The equivalent thickness of different types of concrete masonry is provided in the following. For example for an 8 in.

13 mm a 1 in. 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 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. If you fill all the cells.

203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in. 1 hour rating requires a 6 deep block 2 hour rating requires a 10 deep block if you need to achieve a 4 hour fire rating you can either use a 12 deep lightweight block or you can fill all the core holes with sand grout or perlite. 4 hour walls. 4 hour fire rating.

Allowing for safe means of egress and a higher fire rating these blocks should no longer be looked at as just standard grey cmu. 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. Concrete masonry unit. Introducing a control joint into a fire rated partition it does create an opening for flame and temperature transmission and therefore.

Even concrete floors will suffer considerable. A 5 1 2 inch wall gets a rating of 2 hours. Single layer concrete walls floors and roofs. Section 3 1 of aci 216 1.

Fire endurance of structures figure 5 shows the effect of fire on the resistance of a simply supported reinforced concrete. Accepts no responsibility for proper application of the rated wall assembly above or responsibility for the construction of such assemblies.