Stc Floor Assemblies

Adding additional layers of drywall can improve the stc rating of an assembly.

Stc floor 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. Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b. Insulation will noticeably improve the stc rating of an assembly. 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.

Metal stud walls perform better than wood stud walls. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. Transmission the passage of sound waves from its source through a vibrating medium and to a listener. 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.

Dupree office of noise control california department of health services berkeley california 94704 introduction building codes. Staggered or double stud walls are higher rated than single stud walls. 25 4 mm nominal wood finish floor or 19 32 15 1 mm plywood finished floor with long edges t g and 15 32 11 9 mm interior plywood with exterior glue subfloor perpendicular to. Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies.