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.
Stc 50 wall assembly metal studs.
Staggered or double stud walls are higher rated than single stud walls.
To view different wall assemblies click on each point below that may apply to your project.
We see two walls.
One has an stc 47 4 solid concrete the other an stc 48 steel stud wall.
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.
50 stc with single layer designs have achieved up to 4 hr.
Metal stud walls perform better than wood stud walls.
Target stcs by building use.
Stc ratings for load bearing walls.
Breakaway clip facings and height of wall differ between ul design u373 and whi gp wa 120 04.
Fire resistance ratings with 3 4 ultracode core panels in steel framed partition assemblies for more information see the following brochures.
Note that in the low frequency range important for music theaters traffic aircraft and most other real world noise sources the lower stc wall is literally 30 decibels better yet lower stc.
How to improve stc ratings in your wall.
Stc sound transmission classification overview.
Insulation will noticeably improve the stc rating of an assembly.
An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35.
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.
Doubling the mass of a wall assembly does not double the stc rating.
15 8 41 mm steel studs indicates value is an estimate steel framing stc values sound control jm formaldehyde free insulations help reduce.
These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.
Moisture resistant assemblies aesthetic assemblies sa932 sa933 sheetrock gypsum panels submittal sheet wb1473 usg area separation walls.
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.
