Stc 50 Wall Section

Area separation wall systems area separation wall submittal sheet sa925 wb2129 sheetrock shaft wall systems tested systems achieve up to 58 stc.

Stc 50 wall section.

A soft metal stud will reduce the efficiency of transmitted vibrations noise. Doubling the mass of a wall assembly does not double the stc rating. 5 8 gypsum board type x 1 layer one side 2 layers on the other side. Through base layer perpendicular to.

However the soft gauge studs reduce the stiffness of a wall and limit the amount of weight the wall can hold. Resilient channels attached 16 406 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. 3 thick rockwool afb semi rigid batt insulation.

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. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options. 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. An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35.

3 5 8 steel studs 25 gauge spaced 16 on center. Figure 2 resilient channels over wood studs break the vibration path helping to 1increase sound transmission loss stc. 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. Stc ratings steel stud framed walls sound transmission class stc is an integer rating of how well a framed wall attenuates sound.

Maximum with 1 5 8 41 mm type s drywall screws 8 203 mm o c. Figure 3 insulating wall cavities noticeably improves sound transmission loss by providingbetween one wall surface and. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies.