Stc Rate Floor Assembly

Impact sound complaints are common on floor ceiling assemblies that meet the bare minimum requirement of 50 decibels iic.

Stc rate floor assembly.

Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly. Transmission the passage of sound waves from its source through a vibrating medium and to a listener. Insulation will noticeably improve the stc rating of an assembly. Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies.

Adding additional layers of drywall can improve the stc rating of an assembly. Wall floor assembly guide insulation for sound fire rated assemblies. Ultimately the design and detailing of the project assembly or system is the responsibility of a professional and all projects must comply with applicable building. 55 59 stc and 73 iic w c p.

Sound transmission class guidance. In 1961 stc was introduced as the method for comparing various wall ceiling floor door and window assemblies. Staggered or double stud walls are higher rated than single stud walls. 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.

The standard requires a minimum laboratory stc rating of 50 for party walls and floor ceilings. The stc rating shown reflects testing or evaluation of an assembly with one or more products under test conditions and may not apply to all products listed for each assembly. Iic impact isolation class astm e492 e989 and stc sound transmission class astm e336 e413 are both tests for sound traveling through the total floor ceiling assembly from an upper living area to a lower living area. Ul l502 cul l502.

Metal stud walls perform better than wood stud walls. 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. Airborne sound passes through a space by vibrating the air. 5 or 6 points in laboratory stc ratings for essentially similar assemblies.

Stc ratings for wall floor and window materials and assemblies 3 appendix a stc ratings a 1 walls a 1 exterior a 1 interior a 9 wooden studs a 9 metal studs a 14 floors a 16 wood a 16 concrete a 21 windows a 24 doors a 27 exterior a 27 interior a 29 appendix b references b 1. Resilient channel can improve the stc rating of an assembly.