Acoustical Panels
Acoustical Panels
(OP)
Say if I have a 8" fully grouted CMU wall. Normal STC Rating of roughly 55. We are to install acoustical Sound panels perfm. metal with a 23% opening and with a 2 inches thick, 2.5 pcf density fiberglass sound absorber encased in 2 mil thick, black, PVC embossed vinyl that has a 90% NRC.
Now do you add the STC rating of the panels to the wall or do you consider only the higher value.
IE
Wall=STC-55
Panels=STC-35
STC rating= 95?
or STC Rating STC-55
Now do you add the STC rating of the panels to the wall or do you consider only the higher value.
IE
Wall=STC-55
Panels=STC-35
STC rating= 95?
or STC Rating STC-55





RE: Acoustical Panels
If you decide to leave it over here, realize that not everyone here is in your discipline. You will get a better response if you don't use "TLA's" (or three letter acronyns) of which I counted five in your post. One tripped me up, because the meaning that I would normally assign to it (NRC= Nuclear Regulatory Commission) makes no sense in terms of your post. People might have cross-discipline experience that would apply but not realize it because they are not familiar with the particular accronyms you are using. Therefore please consider defining your accronyms.
Patricia Lougheed
******
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RE: Acoustical Panels
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Acoustical Panels
http://www.eng-tips.com/threadminder.cfm?pid=384
And spell out your acronyms.