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SRI values for an aluminium door

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BrianD

Automotive
Joined
May 26, 2001
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5
Location
GB
Hi,
I am after some transmission loss figures for a single skin aluminium roller door. Does anyone know of any web references were I can find typical OBCF figures for roller shutter doors?
Thanks
 
Hi,

I don't think you'll find any data on roller doors since fabricants aren't that keen to test their doors. Try data for an aluminium sheet of the same tickness as a groove evaluation. That's what at best the door will give. There's however certainly many leakages. You can then set the sound reduction to max 20 dB for frequences over 1000Hz. That's far to be precise, but probably not that far from what you'll get.

OkdB
 
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