§ 63.301. Method of Vibration Measurement.

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Vibration velocity shall be measured with a seismograph or other vibration analysis equipment capable of measuring and recording displacement and frequency. The vibration level measurement shall be the vector sum of three mutually perpendicular components recorded simultaneously. The maximum vector resultant recorded may not be greater than permitted by Figure 3.

(Ord. of 9-16-1991, Doc. #25100)

                    
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