Stc 50 Metal Stud Wall Construction

Stc sound transmission classification overview.

Stc 50 metal stud wall construction.

An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35. Weigh at least 50 less than masonry walls allowing faster easier installation. Metal stud walls 1 4. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound.

Target stcs by building use. Doubling the mass of a wall assembly does not double the stc rating. One hour fire rated partition parallel to one side of min. Two hour fire rated partition.

Insulation will noticeably improve the stc rating of an assembly. High stc ratings can be achieved without the use of special acoustical products if the gauge of the steel studs is soft. How to improve stc ratings in your wall. In base layer and 1 5 8 2.

We see two walls. One has an stc 47 4 solid concrete the other an stc 48 steel stud wall. Boarding and nail pops associated with standard drywall construction plus lower lifecycle costs and greater sustainability. However the soft gauge studs reduce the stiffness of a wall and limit the amount of weight the wall can hold and can also limit the use of a.

A soft metal stud will reduce the efficiency of transmitted vibrations noise. Common wall stcs by construction type. International building code requires 50 stc between adjacent dwelling units. Fire rated floor ceiling assemblies using metal framing stc 50 iic 50 fire rating as shown 1.

Stc ratings for load bearing walls. Wood stud walls to a scale of one inch one foot and 1 3. 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. Metal stud walls perform better than wood stud walls.

15 8 41 mm steel studs indicates value is an estimate steel framing stc values sound control jm formaldehyde free insulations help reduce. 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. Staggered or double stud walls are higher rated than single stud walls. Studless walls tion in the example.

Each assembly in the catalog is drawn 1 2. One hour fire rated partition 3. Eleven tests listed and that the fourth test in the group 1 2 3 1 4 4 matches the descrip 1 1. To view different wall assemblies click on each point below that may apply to your project.