Stc 50 Cmu Wall

One has an stc 47 4 solid concrete the other an stc 48 steel stud wall.

Stc 50 cmu wall.

Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures. Insulation will noticeably improve the stc rating of an assembly. These tests have indicated a direct relationship between wall weight and the resulting stc heavier concrete masonry walls have higher stc ratings. Wood stud walls to a scale of one inch one foot and 1 3.

We see two walls. In general the stl of a concrete masonry wall increases with increasing frequency of the sound. The estimate could easily be off by as much as 4 db. Metal stud walls 1 4.

3 5 8 steel studs 25 gauge spaced 16 on center. 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. Staggered or double stud walls are higher rated than single stud walls. Masonry walls presented beside a summary description of the correct choice here would be 1 2.

Studless walls tion in the example. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Metal stud walls perform better than wood stud walls.

Determining sound transmission class stc for concrete masonry. 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. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options. Other informa wood stud walls.

There are numerous other issues that need to be addressed to. Stc 0 18w 40 where w pounds per square foot psf this information is provided as a tool to help estimate. 3 thick rockwool afb semi rigid batt insulation. Many sound transmission loss tests have been per formed on various concrete masonry walls.

Each assembly in the catalog is drawn 1 2. To view different wall assemblies click on each point below that may apply to your project. 5 8 gypsum board type x 1 layer one side 2 layers on the other side.