Section 42-424 - Maximum permitted impact vibration displacement
In all Manufacturing Districts , no activity shall cause or create an impact vibration , at any point on any lot line , with a displacement in excess of the permitted impact vibration displacement for the frequencies as set forth in the following table for the district indicated.
MAXIMUM PERMITTED IMPACT VIBRATION DISPLACEMENT (in inches)
District Frequency (cycles per second) M1 M2 M3 10 and below .0016 .0040 .0078 10 - 20 .0010 .0020 .0044 20 - 30 .0006 .0012 .0022 30 - 40 .0004 .0008 .0014 40 - 50 .0002 .0006 .0010 50 - 60 .0002 .0004 .0008 60 and over .0002 .0002 .0008