Stc 50 Concrete Wall

Metal stud walls perform better than wood stud walls.

Stc 50 concrete wall.

Staggered or double stud walls are higher rated than single stud walls. However the additional weight added complexity of construction and poor thermal insulation tend to limit masonry wall partitions as a viable sound isolation solution in many. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b.

Stc ratings for wall floor and window materials and assemblies 3 appendix a stc ratings a 1 walls a 1 exterior a 1 interior a 9 wooden studs a 9 metal studs a 14 floors a 16 wood a 16 concrete a 21 windows a 24 doors a 27 exterior a 27 interior a 29 appendix b references b 1. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures. Stc 0 18w 40 where w pounds per square foot psf this information is provided as a tool to help estimate. 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.

This catalog of sound rated wall and the purpose of the indexing system is. Dupree office of noise control california department of health services berkeley california 94704 introduction building codes. The stc rating of a cmu wall can be estimated based on its weight using the following formula. Area separation wall systems area separation wall submittal sheet sa925 wb2129 sheetrock shaft wall systems tested systems achieve up to 58 stc.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Due to increased mass poured concrete and concrete blocks typically achieve higher stc values in the mid stc 40s to the mid stc 50s than equally thick framed walls. Insulation will noticeably improve the stc rating of an assembly. There are numerous other issues that need to be addressed to.

The estimate could easily be off by as much as 4 db. Determining sound transmission class stc for concrete masonry. To view different wall assemblies click on each point below that may apply to your project.