Stc 50 Wall Assembly Metal Studs

Stc ratings for load bearing walls.

Stc 50 wall assembly metal studs.

Target stcs by building use. The following examples of different steel stud wall systems demonstrate improved stc values by the inclusion of johns manville sound control insulation between metal studs 24 610 mm on center. Sound tested with 2 x 4 stud wall with 1 2 12 7 mm toughrock fireguard c gypsum wallboard or densarmor plus fireguard c panels each side of assembly and 3 1 2 89 mm fiberglass insulation in stud space both sides. Staggered or double stud walls are higher rated than single stud walls.

Moisture resistant assemblies aesthetic assemblies sa932 sa933 sheetrock gypsum panels submittal sheet wb1473 usg area separation walls. We see two walls. To view different wall assemblies click on each point below that may apply to your project. 50 stc with single layer designs have achieved up to 4 hr.

How to improve stc ratings in your wall. One has an stc 47 4 solid concrete the other an stc 48 steel stud wall. An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound.

Insulation will noticeably improve the stc rating of an assembly. 15 8 41 mm steel studs indicates value is an estimate steel framing stc values sound control jm formaldehyde free insulations help reduce. Doubling the mass of a wall assembly does not double the stc rating. Metal stud walls perform better than wood stud walls.

Stc sound transmission classification overview. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. International building code requires 50 stc between adjacent dwelling units. Sound tested with 2 x 4 stud wall with 1 2 12 7 mm toughrock fireguard c gypsum wallboard or densarmor plus fireguard c panels each side of assembly and 3 1 2 89 mm fiberglass insulation in stud space both sides.

Fire resistance ratings with 3 4 ultracode core panels in steel framed partition assemblies for more information see the following brochures. Breakaway clip facings and height of wall differ between ul design u373 and whi gp wa 120 04. Common wall stcs by construction type.