Stc 50 Wall Section

Figure 2 resilient channels over wood studs break the vibration path helping to 1increase sound transmission loss stc.

Stc 50 wall section.

An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35. A soft metal stud will reduce the efficiency of transmitted vibrations noise. 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.

Through base layer perpendicular to. Doubling the mass of a wall assembly does not double the stc rating. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound. 5 8 15 9 mm toughrock fireguard c gypsum board or 5 8 15 9 mm densarmor plus fireguard c gypsum panels applied perpendicular to i shaped wood joists or wood and steel trusses spaced 19 2 488 mm o c.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Figure 3 insulating wall cavities noticeably improves sound transmission loss by providingbetween one wall surface and. Figure 1 the addition of gypsum board to one surface effectively increases wall mass. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

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. Weigh at least 50 less than masonry walls allowing faster easier installation for more information see the following brochures. 3 5 8 steel studs 25 gauge spaced 16 on center. 5 8 gypsum board type x 1 layer one side 2 layers on the other side.

In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. 3 thick rockwool afb semi rigid batt insulation. 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.