2 Hour Fire Rated Cmu Wall Detail

For cored units the equivalent wall thickness is calculated by multiplying the percent solid by the wall thickness.

2 hour fire rated cmu wall detail.

Put two sheets together on one side or use one sheet on each side of a wall. Double the number of type x sheets on the wall for a simple system installed over fire resistant fiberglass insulation. These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

Expanded slag or pumice 4 7 4 5 4 4 4 2 4 0 3 8 3 6 3 4 3 2 3 0 2 7 2 5 2 1 1 9 1 5 a fire resistance rating between the hourly fi re resistance rating periods listed may be determined by linear in terpolation based on the equivalent thickness value of the concrete masonry unit. 13 mm a 1 in. Masonry grout reinforcing steel joint reinforcement anchors ties and accessories not depicted above optional. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

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. Face shell or full mortar bedding as. Offered by concrete masonry fire separation walls will help contain the fire until it can be controlled. Each sheet of 5 8 inch type x drywall is rated to resist fire for one hour so two layers will produce a two hour firewall.

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. 203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in. For example for an 8 in. Ss 211 2 hour partition to steel deck.

Along with this built in fire protection. Astm c 270 masonry mortar type m or s. Concrete masonry wall. B for group h 1 h 2 or continue reading detailing concrete masonry fire walls.

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. Two hour rated walls subjected to the hose stream test of astm e 119. Head of wall firestop system proform quick set fs 90 compound 1 side ul design u411 v438. Table 1 required fire wall fire resistance ratings ref.

51 mm thickness can be used in the joints of a 4 hour wall. Accepts no responsibility for proper application of the rated wall. Head of wall firestop system firestop sealant. Ss 503 control joints for fire.

Ss 212 2 hour chase wall to steel deck.