Stc Concrete Board Wall

The stc can be used to measure sound absorption for both external building walls and internal walls in single and multifamily structures. In stud wall assemblies stc is governed by the type of studs used metal or wood number of studs used single double or triple stud walls the number of layers of gypsum board in the wall assembly the amount of insulation in the stud cavities and the type of isolation elements used resilient channels neoprene isolators etc if any. The typical brick veneer construction with a layer of 10mm 3 8 plasterboard.

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The stc of a wall is determined by comparing sound transmission loss stl values at various frequencies to a standard contour.

Stc concrete board wall.

Similarly in masonry assemblies stc is governed by the thickness of block or concrete mass of the material and its porosity. Gypsum board each side provides stc 63 and a wall footprint 10 3 4 in deep. Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b. Adding additional layers of drywall can improve the stc rating of an assembly.

Cement board systems usg durock brand cement board offers architects builders and tile contractors a strong water durable tile base for tub and shower areas. This catalog of sound rated wall and the purpose of the indexing system is. Insulation will noticeably improve the stc rating of an assembly. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

The sound transmission class stc measured in decibels is used to measure building material s ability to absorb sound. The stc is measured by positioning a representative. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Also an ideal underlayment for tile on floors and countertops in new construction and remodeling.

Determining sound transmission class stc for concrete masonry. Dupree office of noise control california department of health services berkeley california 94704 introduction building codes. Staggered stud wall construction with 3 layers of 16mm 5 8 plasterboard on studs of 95x35mm 4 x 11 2 on a 120mm 4 3 4 common base. While effective for high stc the two walls take additional floor space and have a higher material cost than single stud construction.

Metal stud walls perform better than wood stud walls. Resilient channel can improve the stc rating of an assembly. Staggered or double stud walls are higher rated than single stud walls. Double 2 x 4 stud wall with two layers of 5 8 in.

Sound transmission class stc provides an estimate of the acoustic performance of a wall in certain common airborne sound insulation applications.

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