2 Hour Fire Rated Cmu Wall Detail

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.

2 hour fire rated cmu wall detail.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Head of wall firestop system firestop sealant. 51 mm thickness can be used in the joints of a 4 hour wall. Along with this built in fire protection.

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. Ss 503 control joints for fire. Table 1 required fire wall fire resistance ratings ref. 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.

Astm c 270 masonry mortar type m or s. These blocks while allowing for safe means of egress and fire rating should no longer be looked at as just normal grey cmu. Face shell or full mortar bedding as. By including both hose stream test procedures.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Two hour rated walls subjected to the hose stream test of astm e 119. Ss 210 2 hour partition to concrete slab. Double the number of type x sheets on the wall for a simple system installed over fire resistant fiberglass insulation.

Ss 212 2 hour chase wall to steel deck. 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. For cored units the equivalent wall thickness is calculated by multiplying the percent solid by the wall thickness. For example for an 8 in.

Put two sheets together on one side or use one sheet on each side of a wall. Ss 211 2 hour partition to steel deck. 203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in. Concrete masonry 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. Accepts no responsibility for proper application of the rated wall. Offered by concrete masonry fire separation walls will help contain the fire until it can be controlled. 13 mm a 1 in.

Masonry grout reinforcing steel joint reinforcement anchors ties and accessories not depicted above optional.