Ceiling attenuation class cac is a measure for rating the performance of a ceiling system as a barrier to airborne sound transmission through a common plenum between adjacent closed spaces such as private offices and open spaces used for collaboration and focus areas.
Cac rating ceiling tile.
Total acoustics best nrc 0 80 and cac 35 noise can impede concentration healing and learning.
Noise reduction coefficient nrc and ceiling attenuation class cac.
In that case you are likely interested in a high cac.
Best nrc cac.
When using a high cac ceiling wall construction with a minimum stc 40 rating should be specified.
The higher the cac rating the better the performance.
Nrc and cac ratings.
An acoustic ceiling product with a 95 nrc rating means that 95 of sound in the room is absorbed while the other 5 is reflected.
When evaluating performance in acoustic drop ceiling tiles you ll want to reference two general ratings.
Total acoustics ceilings rated best are ideal for high traffic spaces or multipurpose.
A ceiling system with a cac less than 25 is very low performance whereas a ceiling with a cac of 35 or greater is considered high performance.
Cac indicates the ceiling s ability to prevent airborne sound from traveling between adjacent rooms when the dividing wall does not connect with the structural ceiling which ranges from 0 up to 40 45 for ceiling.