Maximum A-Weighted Sound Levels Allowed

Maximum A-weighted sound levels allowed by OSHA

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U.S. Occupational Safety and Health Administration - OSHA - maximum A-weighted sound levels allowed for work periods during a working day are indicated below: 

Duration per Day
(hr)		 Maximum Allowed Sound Level
(dBA)
8 90
6 92
4 95
3 97
2 100
1.5 102
1 105
0.5 110
less than 0.25 115

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