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Posted By Vicky Pye
Does anybody know what the maximum volume a fire alarm can be ?!
Thanks !!
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Posted By simon carrier
We have some sounders located around the building that reach up to 102dB, hurts your ears a bit!!!. However I have recently read that the max should be 85dB at 3m distance. Hope this helps.
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Posted By Vicky Pye
Thanks ! I find this discussion forum very valuable!
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Posted By Geoff Burt
My understanding is that it should be 6dB above the ambient noise level - no doubt I will be corrected if this is wrong.
Geoff
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Posted By Rex Harrison
At the company I work for we have printing machinery where the noise level can be upto 105dB so I presume Geoff must be on the right path.
I am unsure at what level our fire alarms are set at, but you can hear them clearly when the machinery is operating (which is the most important issue).
I can tell you they certainly let you know how many people are aware of your extention number when it gets stuck on for quarter of an hour.
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Posted By shaun mckeever
The maximum sound pressure in the new BS5839 is 120 dB(A). Generally you should be trying to acheive 65 dB(A) in normal circumstances or 75 dB(A) at the bed head to rouse people from sleep. Under certain circumstances 60 dB(A) would be acceptable.
There is no scientific reason for the sound levels given in the standard. Also remember that the standard are recommendations not requirements.
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