Stc 50 Wall Assembly

Is the minimum rating by state law.

Stc 50 wall assembly.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. 50 stc with single layer designs. 3 5 8 steel studs 25 gauge spaced 16 on center. 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.

Staggered or double stud walls are higher rated than single stud walls. Insulation will noticeably improve the stc rating of an assembly. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. Stc 50 lab test 5 tl 93 333 alternative stc 50 wall options.

Ul v473 ulc w481 cul v473 ga wp. 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. Sound tested with 2 x 4 stud wall with 1 2 12 7 mm toughrock fireguard c wallboard or densarmor plus. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

Nevertheless stc 50 ings are. Adding additional layers of drywall can improve the stc rating of an assembly. Resilient channel can improve the stc rating of an assembly. 3 thick rockwool afb semi rigid batt insulation.

5 8 gypsum board type x 1 layer one side 2 layers on the other side. Sound transmission flanking paths in build shows an stc of 50. Airborne sound passes. Sound transmission measurement of the ability of a wall or floor assembly to isolate airborne sound and prevent it from passing from one class stc side to the other.

Doubling the mass of a wall assembly does not double the stc rating. Metal stud walls perform better than wood stud walls. 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. An empty framed wall steel studs and a layer of gypsum wallboard on each side has an stc of approximately 35.