Stc 50 Wall Assembly Metal Studs

In order to achieve an stc of 50 and higher you must stagger or double the studs for wood stud walls use a resilient mount such as iso clips and or add multiple layers of soundproofing materials or drywall. An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35. International building code requires 50 stc between adjacent dwelling units.

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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.

Stc 50 wall assembly metal studs.

Breakaway clip facings and height of wall differ between ul design u373 and whi gp wa 120 04. Metal stud walls perform better than wood stud walls. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound. Moisture resistant assemblies aesthetic assemblies sa932 sa933 sheetrock gypsum panels submittal sheet wb1473 usg area separation walls.

Staggered or double stud walls are higher rated than single stud walls. Although that ll help you meet code it doesn t mean it s sufficient to block out the noise tenants expect. No insulation 50 with insulation 54. Doubling the mass of a wall assembly does not double the stc rating.

50 stc with single layer designs have achieved up to 4 hr. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 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 stud wall construction with 2 layers of 16mm 5 8 plasterboard on studs of 95x35mm 4 x 11 2 on a 120mm 4 3 4 common base.

Insulation will noticeably improve the stc rating of an assembly. To view different wall assemblies click on each point below that may apply to your project. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Fire resistance ratings with 3 4 ultracode core panels in steel framed partition assemblies for more information see the following brochures.

Remember that a standard wood stud wall has an stc of 35 while a metal stud wall 25 gauge has an stc of 44. 15 8 41 mm steel studs indicates value is an estimate steel framing stc values sound control jm formaldehyde free insulations help reduce. There are a number of other building codes with stricter regulations including the national association of home builders which requires an stc of 60.