Stc Ratings For Floor Ceiling Assemblies

Structure borne sound travels through wall partitions ceilings and floor ceiling assemblies.

Stc ratings for floor ceiling assemblies.

In base layer and 1 5 8 2. Astm e90 standard test. 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. Impact sound complaints are common on floor ceiling assemblies that meet the bare minimum requirement of 50 decibels iic.

Dupree office of noise control california department of health services berkeley california 94704 introduction building codes. 55 59 stc and 73 iic w c p. Impact noise tested on floor ceiling systems only is reported as the impact insulation class iic. 25 gauge metal studs 24 with 1 type s drywall screws 36 o c.

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. This catalog of sound rated wall and the purpose of the indexing system is. Class stc side to the other. 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.

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. One hour fire rated partition parallel to one side of min. Base layer 1 x 24 toughrock shaftliner or densglass shaftliner panels between 2 1 2 floor and ceiling j runners with t section of 2 1 2 steel c h c t or i studs between panels.

Fire rated floor ceiling assemblies using metal framing stc 50 iic 50 fire rating as shown 1. Sound ratings gypsum board assemblies are laboratory tested to establish their sound insulation characteristics. Insulation for sound fire rated assemblies. Our range of drawings can help pros plan projects more effectively by utilizing designs for a fire rated ceiling assembly.

Ul l502 cul l502 ga fc 5105 2. Here you can find drawings for our ul fire rated floor assemblies and ul fire rated ceiling assemblies. Figure 3 insulating wall cavities noticeably improves. Two hour fire rated partition.

Catalog of stc and iic ratings for wall and floor ceiling assemblies russell b. Airborne sound insulation is reported as the sound transmission class stc. Airborne sound passes through a space by vibrating the air.