10-5. A sound power level reading of 127 dB was taken near a construction site where chippers were being used. When all but one of the chippers stopped working, the sound power level reading was 120 dB. Estimate the number of chippers in operation when the reading of 127 was obtained. You may assume that the sources may be treated as ideal point sources located at the same point.

Structural Analysis
6th Edition
ISBN:9781337630931
Author:KASSIMALI, Aslam.
Publisher:KASSIMALI, Aslam.
Chapter2: Loads On Structures
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10-5. A sound power level reading of 127 dB was taken near a construction site
where chippers were being used. When all but one of the chippers stopped
working, the sound power level reading was 120 dB. Estimate the number
of chippers in operation when the reading of 127 was obtained. You may
assume that the sources may be treated as ideal point sources located at the
same point.
Transcribed Image Text:10-5. A sound power level reading of 127 dB was taken near a construction site where chippers were being used. When all but one of the chippers stopped working, the sound power level reading was 120 dB. Estimate the number of chippers in operation when the reading of 127 was obtained. You may assume that the sources may be treated as ideal point sources located at the same point.
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