Room ratio & correct height when using dropped ceiling

[TmuKoo]

Hi,

I have one question about room ratios and how you measure room height when using dropped ceiling with this kind of acoustical ceilingpanel: http://www.gyptone.fi/files/Gyptone/...%2041%20FI.pdf

So I would build room that would have dropped gyptone ceiling about 200mm from original concrete ceiling and above that gyptone there would be rockwool.

So the question would be that if I would like to use for example room ratios 1:1,4:1,9 or something other ratio, how should I measure that height...from concrete ceiling or from that dropped acoustical ceiling?

Thanks;
TmuKoo

[avare]

Originally Posted by TmuKoo

So the question would be that if I would like to use for example room ratios 1:1,4:1,9 or something other ratio, how should I measure that height...from concrete ceiling or from that dropped acoustical ceiling?

The concrete ceiling.

Andre