Stc 50 Wall Section

Figure 1 the addition of gypsum board to one surface effectively increases wall mass.

Stc 50 wall section.

3 5 8 steel studs 25 gauge spaced 16 on center. Figure 3 insulating wall cavities noticeably improves sound transmission loss by providingbetween one wall surface and. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures. Resilient channels attached 16 406 mm o c.

Through base layer perpendicular to. Doubling the mass of a wall assembly does not double the stc rating. A soft metal stud will reduce the efficiency of transmitted vibrations noise. 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. Alternative stc 50 wall build ups high stc ratings can be achieved without the use of special acoustical products if the gauge of the steel studs is soft. 5 8 gypsum board type x 1 layer one side 2 layers on the other side. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

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. Area separation wall systems area separation wall submittal sheet sa925 wb2129 sheetrock shaft wall systems tested systems achieve up to 58 stc. Figure 2 resilient channels over wood studs break the vibration path helping to 1increase sound transmission loss stc. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies.

However the soft gauge studs reduce the stiffness of a wall and limit the amount of weight the wall can hold. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options. 3 thick rockwool afb semi rigid batt insulation.