Stc 50 Cmu Wall

3 thick rockwool afb semi rigid batt insulation.

Stc 50 cmu wall. Determining sound transmission class stc for concrete masonry. Metal stud walls perform better than wood stud walls. To view different wall assemblies click on each point below that may apply to your project. Many sound transmission loss tests have been per formed on various concrete masonry walls.

Each assembly in the catalog is drawn 1 2. Studless walls tion in the example. Insulation will noticeably improve the stc rating of an assembly. Staggered or double stud walls are higher rated than single stud walls.

Stc 0 18w 40 where w pounds per square foot psf this information is provided as a tool to help estimate. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. 3 5 8 steel studs 25 gauge spaced 16 on center.

Metal stud walls 1 4. In general the stl of a concrete masonry wall increases with increasing frequency of the sound. Other informa wood stud walls. Masonry walls presented beside a summary description of the correct choice here would be 1 2.

We see two walls. Wood stud walls to a scale of one inch one foot and 1 3. These tests have indicated a direct relationship between wall weight and the resulting stc heavier concrete masonry walls have higher stc ratings. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options.

There are numerous other issues that need to be addressed to. One has an stc 47 4 solid concrete the other an stc 48 steel stud wall. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures. Sound transmission class or stc is an integer rating of how well a building partition attenuates airborne sound in the us it is widely used to rate interior partitions ceilings floors doors windows and exterior wall configurations.

Sound transmission class stc provides an estimate of the acoustic performance of a wall in certain common airborne sound insulation applications the stc of a wall is determined by comparing sound transmission loss stl values at various frequencies to a standard contour stl is the decrease or attenuation in sound energy in db. The estimate could easily be off by as much as 4 db. 5 8 gypsum board type x 1 layer one side 2 layers on the other side.