Stc 50 Cmu Wall

5 8 gypsum board type x 1 layer one side 2 layers on the other side.

Stc 50 cmu wall.

Metal stud walls perform better than wood stud walls. Insulation will noticeably improve the stc rating of an assembly. Many sound transmission loss tests have been per formed on various concrete masonry walls. Metal stud walls 1 4.

3 thick rockwool afb semi rigid batt insulation. Masonry walls presented beside a summary description of the correct choice here would be 1 2. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options. There are numerous other issues that need to be addressed to.

Other informa wood stud walls. Wood stud walls to a scale of one inch one foot and 1 3. Stc 0 18w 40 where w pounds per square foot psf this information is provided as a tool to help estimate. Staggered or double stud walls are higher rated than single stud walls.

We see two walls. 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. Studless walls tion in the example. These tests have indicated a direct relationship between wall weight and the resulting stc heavier concrete masonry walls have higher stc ratings.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures. Determining sound transmission class stc for concrete masonry. To view different wall assemblies click on each point below that may apply to your project.

The estimate could easily be off by as much as 4 db. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Each assembly in the catalog is drawn 1 2. One has an stc 47 4 solid concrete the other an stc 48 steel stud wall.

Note that in the low frequency range important for music theaters traffic aircraft and most other real world noise sources the lower stc wall is literally 30 decibels better yet lower stc. 3 5 8 steel studs 25 gauge spaced 16 on center. In general the stl of a concrete masonry wall increases with increasing frequency of the sound.