§ 8. VIBRATION  


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  • Any industrial operation or activity which shall cause at any time and at any point along the nearest adjacent property line, earthborn vibrations in excess of the limits set forth in column I (below) are prohibited. In addition, any industrial operation or activity which shall cause at any time and at any point along a zone boundary line, earthborn vibrations in excess of the limits set forth in column II are prohibited. Vibrations shall be expressed as resultant displacement in inches.

    Figure 1. Vibration Standards

    Frequency
    (cycles-per-second)
    Displacement I
    (inches)
    Displacement II
    (inches)
    0—10 0.0008 0.0004
    10—20 0.0005 0.0002
    20—30 0.0002 0.0001
    30—40 0.0002 0.0001
    40 and over 0.0001 0.0001

     

    This tabulation is for steady state vibration; which is defined as continuous vibration in contrast to discrete pulses. Impact vibration, that is, discrete pulses which do not exceed 100 pulses per minute, shall not produce in excess of twice (two times) the displacement stipulated above.