[SML] Outside entities managing campus building and dB limits

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Our county sheriff defaults to 90 dBA for outdoor audio in areas not 
covered by specific zoning limits.  They see to enforce this for all 
sounds, even emanating from a building through walls.  For actual worker 
and audience exposure limits, (indoors or otherwise,), we always defer 
to OSHA exposure limits.

Where this falls short in the nuisance category is very low frequency 
audio.  The dBA weighting is weighted based on sensitivity to human 
ears, and does not measure a flat response.  you can have sound in the 
125 dBC range down below 80 Hz that is massively loud, and heard for a 
long distance, but technically, it may barely register on a dBA weighted 
monitor.  We have found that events with loud low frequency program , 
such as EDM music shows, are technically not in violation of OSHA 
exposure limits, but they still create such a nuisance as to alert and 
involve law enforcement. This concern has also spilled into other 
program types, like showing movies in a large auditorium , that have 
very impressive LFE. presentation spaces with LFE/subwwofers below 
grade/ground level and surrounded by concrete seem to attract less 
attention.

-s


On 10/14/15 12:07 PM, John McAfee via Stagecraft wrote:
> I know that there has been a discussion of dB limits for rentals, but I can’t find it in my archive.  What do people generally put in as limits?
>
> Also our university is currently discussing a contract for the state Parks and Planning to bring in and run all non-academic events with revenue split.  Has anyone had their school do something like this?  Any advice?  Will it be as much of a cluster-jam as I expect it to be?
>
> Thanks,
> John
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