Stc 50 Floor Assembly

One layer 1 x24 toughrock shaftliner or densglass shaftliner panels between 2 1 2 floor and ceiling j runners with t section of 2 1 2 steel c t studs between panels.

Stc 50 floor assembly.

One hour fire rated partition 3. Airborne sound passes. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. In base layer and 1 5 8 2.

Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. Fire rated floor ceiling assemblies using metal framing stc 50 iic 50 fire rating as shown 1. One hour fire rated partition parallel to one side of min. Ubc requirements for floor ceiling 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. Resilient channel can improve the stc rating of an assembly. 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. Metal stud walls perform better than wood stud walls.

This catalog of sound rated wall and the purpose of the indexing system is. Staggered or double stud walls are higher rated than single stud walls. Dupree office of noise control california department of health services berkeley california 94704 introduction building codes. Adding additional layers of drywall can improve the stc rating of an assembly.

Transmission the passage of sound waves from its source through a vibrating medium and to a listener. Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b. Two hour fire rated partition. Its design gp wa.

25 gauge metal studs 24 with 1 type s drywall screws 36 o c. Insulation will noticeably improve the stc rating of an assembly. An assembly rated at stc 50 will satisfy the building code requirement. The field test evaluates the dwelling s actual construction and includes all sound paths.

Wood joists supporting 1 25 4 mm nominal wood subfloor and 1 25 4 mm nominal wood finish floor or 19 32. Stc ratings of 50 if tested in a laboratory or 45 if tested in the field. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly.