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.
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.
Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling 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.
Transmission the passage of sound waves from its source through a vibrating medium and to a listener.
In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies.
Adding additional layers of drywall can improve the stc rating of an assembly.
Staggered or double stud walls are higher rated than single stud walls.
Resilient channel can improve the stc rating of an assembly.
Metal stud walls perform better than wood stud walls.
Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b.
Insulation will noticeably improve the stc rating of an assembly.
This catalog of sound rated wall and the purpose of the indexing system is.