Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.

For ceilings, what is Absorption Class and how is it connected to Alpha w?

April 26, 2017Alpha ceilings connected

0

Posted

For ceilings, what is Absorption Class and how is it connected to Alpha w?

1 Answer

0

Posted

This is a system for the classification of Alpha w values which is defined in EN ISO 11654. Because it groups consecutive Alpha w values together into six broad-bands (each successively identified as A to E & ‘Not classified’), it is not so precise and therefore provides less useful detail than when individual Alpha w values are specified or selected.