Stc Concrete Board Wall

Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b.

Stc concrete board wall.

Also an ideal underlayment for tile on floors and countertops in new construction and remodeling. Insulation will noticeably improve the stc rating of an assembly. Adding additional layers of drywall can improve the stc rating of an assembly. Dupree office of noise control california department of health services berkeley california 94704 introduction building codes.

Determining sound transmission class stc for concrete masonry. 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 stc of a wall is determined by comparing sound transmission loss stl values at various frequencies to a standard contour. Similarly in masonry assemblies stc is governed by the thickness of block or concrete mass of the material and its porosity.

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. 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. 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. Double 2 x 4 stud wall with two layers of 5 8 in. 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. The typical brick veneer construction with a layer of 10mm 3 8 plasterboard.

While effective for high stc the two walls take additional floor space and have a higher material cost than single stud construction. Sound transmission class stc provides an estimate of the acoustic performance of a wall in certain common airborne sound insulation applications. Metal stud walls perform better than wood stud walls. Resilient channel can improve the stc rating of an assembly.

Gypsum board each side provides stc 63 and a wall footprint 10 3 4 in deep.