Stc 50 Rated Wall Assembly

This catalog of sound rated wall and the purpose of the indexing system is.

Stc 50 rated wall assembly. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Resilient channels attached 16 406 mm o c. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

Dupree office of noise control california department of health services berkeley california 94704 introduction building codes. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. Through base layer perpendicular to. Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b.

Resilient channel can improve the stc rating of an assembly. Doubling the mass of a wall assembly does not double the stc rating. Ultimately the design and detailing of the project assembly or system is the responsibility of a professional and all projects must comply with applicable building. Adding additional layers of drywall can improve the stc rating of an assembly.

Staggered or double stud walls are higher rated than single stud walls. Maximum with 1 5 8 41 mm type s drywall screws 8 203 mm o c. Stc is calculated by taking the transmission loss tl values tested at 16 standard frequencies over the range of 125 hz to 4000 hz and plotted on a graph. Transmission the passage of sound waves from its source through a vibrating medium and to a listener.

Metal stud walls perform better than wood stud walls. 5 8 15 9 mm toughrock fireguard c gypsum board or 5 8 15 9 mm densarmor plus fireguard c gypsum panels applied perpendicular to i shaped wood joists or wood and steel trusses spaced 19 2 488 mm o c. 5 8 gypsum board type x 1 layer one side 2 layers on the other side. Sound transmission measurement of the ability of a wall or floor assembly to isolate airborne sound and prevent it from passing from one class stc side to the other.

Insulation will noticeably improve the stc rating of an assembly. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options. 3 5 8 steel studs 25 gauge spaced 16 on center. Airborne sound passes through a space by vibrating the air.