2 Hour Fire Wall Concrete Block

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

2 hour fire wall concrete block.

Fire barrier walls are typically constructed of drywall or gypsum board partitions with wood or metal framed studs. The fire resistance rating of concrete masonry walls depends on the type of aggregate used in the units. These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu. 203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in.

For example for an 8 in. 4 or c 331 ref. 13 mm a 1 in. 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.

Equivalent thickness in for standard concrete block widths 1cores can be filled with grout loose fill insulation or aggregate meeting astm c 33 ref. Mm for fi re resistance rating hoursa b concrete masonry unitc 4 33 4 31 2 31 4 3 23 4 21 2 21 4 2 13 4 11 2 11 4 1 3 4 1 2. Walls composed of hollow concrete masonry units having a nominal thickness of 8 inches or greater and having a fire resistance rating of at least 2 hours shall be classified as 4 hours when the hollow spaces are completely filled with perlite or vermiculite grout or a material such as expanded. Concrete masonry noncombustible constructionis a.

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. Linear interpolation from table 721 3 2 of the florida building code for exposed finish block mix 55 limestone 45 siliceous aggregates. 1 2 3 aggregate type in the minimum required equivalent thickness in. Penetrations penetrations through fire walls such as for pipes and cables must be.

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. Building and structural firewalls in north america are usually made of concrete concrete blocks or reinforced concrete older fire walls built prior to world war ii used brick materials. Some of the above listed shapes are non stock items. B for group h 1 h 2 or continue reading detailing concrete masonry fire walls.

Standard northwest block wall ratings. 51 mm thickness can be used. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Table 1 required fire wall fire resistance ratings ref.