Stc Concrete Board Wall

Insulation will noticeably improve the stc rating of an assembly.

Stc concrete board wall.

Determining sound transmission class stc for concrete masonry. Do not use usg durock cement board with vinyl flooring. 8 concrete block hollow core painted 2 coats 2 sides. 8 concrete block hollow core no wall finish.

While effective for high stc the two walls take additional floor space and have a higher material cost than single stud construction. To view different wall assemblies click on each point below that may apply to your project. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Gypsum board each side provides stc 63 and a wall footprint 10 3 4 in deep.

In the us it is widely used to rate interior partitions ceilings floors doors windows and exterior wall configurations. Maximum installed weight of the finish system should not exceed 15 psf. Usg durock cement board is not designed for use as a structural panel. Do not use 1 4 usg durock cement board for wall or ceiling applications.

The stc ratings for masonry walls also can be improved by filling the cores of hollow units with sand or creating a cavity wall. Metal stud walls perform better than wood stud walls. With 1 25 mm type s drywall screws 12 305 mm o c. Sound transmission class or stc is an integer rating of how well a building partition attenuates airborne sound.

Plaster board on one side and 1 layer of 16mm on the other side on a horizontal flexible channel at 600mm 2ft centres screwed to the stud. Standard stud wall with one layer of 16mm 5 8 plasterboard. Staggered or double stud walls are higher rated than single stud walls. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

Attaching gypsum board to a masonry wall with resilient clips can increase the stc rating by 12 to 15 points ref. 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. Outside the us the sound reduction index sri iso index is used. 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.

T h e r e c o m m e n d e d s t c o f a wall is the numerical difference between two sound levels.