1984-07 July IBEW Journal.pdf - International Brotherhood of ...
1984-07 July IBEW Journal.pdf - International Brotherhood of ...
1984-07 July IBEW Journal.pdf - International Brotherhood of ...
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EXCESSIVE<br />
SOUND LEVELS<br />
CAN<br />
D<br />
A term<br />
DECIBELS-<br />
sound enerDY- 'm;~:'.:.,<br />
Increas. <strong>of</strong> 3 DBA<br />
the sound has doubled.<br />
A 10 DBA Incr ••• e mean.<br />
the sound has Increased<br />
times-thus a 20 DBA<br />
the<br />
Temporary<br />
caus~by<br />
SOII}1q'S above<br />
WEAKEST<br />
WE<br />
AN