Stc 50 Wall Types

5 8 type x one layer one side 3 4 fiberglass batt 50 1 hr.

Stc 50 wall types.

Area separation wall systems area separation wall submittal sheet sa925 wb2129 sheetrock shaft wall systems tested systems achieve up to 58 stc. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. One layer type x two layers one two none 42 nr 5 8 one layer 5 8 type x two layers one two none 47 1 hr. 1 2 12 7 mm toughrock fireguard c or 1 2 12 7 mm densarmor plus fireguard c gypsum panel applied perpendicular to resilient channels 24 610 mm o c.

Maximum with 1 5 8 41 mm type s drywall screws 8 203 mm o c. Gypsum panel end joints located midway between continuous channels and attached to additional pieces of channels 54 1372 mm long with screws 12 305 mm o c. Insulation will noticeably improve the stc rating of an assembly. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

The stc results of decoupling in wall and ceiling assemblies varies significantly depending on the framing type air cavity volume and decoupling material type. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound. Through base layer perpendicular to. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

To view different wall assemblies click on each point below that may apply to your project. 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. Resilient channels attached 16 406 mm o c. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures.

Staggered or double stud walls are higher rated than single stud walls. Metal stud walls perform better than wood stud walls.