Stc 50 Wall Assembly

When discrepancies appear among laboratory stc ratings for essentially similar assemblies and when the discrepancies are above and below stc 50 field testing may be required to.

Stc 50 wall assembly.

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. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Insulation will noticeably improve the stc rating of an assembly. 3 thick rockwool afb semi rigid batt insulation.

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Is the minimum rating by state law. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. Resilient channel can improve the stc rating of an assembly.

Sound transmission flanking paths in build shows an stc of 50. 5 8 gypsum board type x 1 layer one side 2 layers on the other side. Doubling the mass of a wall assembly does not double the stc rating. Sound tested with 2 x 4 stud wall with 1 2 12 7 mm toughrock fireguard c wallboard or densarmor plus.

Ul v473 ulc w481 cul v473 ga wp. 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. Airborne sound passes.

50 stc with single layer designs. 3 5 8 steel studs 25 gauge spaced 16 on center. Staggered or double stud walls are higher rated than single stud walls. Adding additional layers of drywall can improve the stc rating of an assembly.

Nevertheless stc 50 ings are. 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 50 lab test 5 tl 93 333 alternative stc 50 wall options. Search for georgia pacific assemblies by selecting an assembly type hourly rating stc rating or product type above or type part of a assembly name.