a) FORMULA - No use shall cause vibrations exceeding the maximum values specified in this Section. The maximum vibration is given as particle velocity, which may be measured directly with suitable instrumentation or computed on the basis of displacement and frequency. When computed the following formula shall be used:
1) PV = 6.28 F x D, where
PV = particle velocity, inches per second, F is vibration frequency includes per second, and D is single amplitude displacement of the vibration in inches.
b) MEASUREMENT - Particle velocity shall be the vector sum of three (3) individual components measured simultaneously in three (3) mutually perpendicular directions.
c) MAXIMUM GROUND TRANSMITTED VIBRATION - Activities and uses shall comply with the maximum permissible ground transmitted vibrations of the table below. Where vibration is produced as discrete impulses and such impulses do not exceed a frequency of sixty (60) per minute, then the values in the table below may be multiplied by two (2).
Maximum Ground Transmitted Vibration
Zoning District (inches/second) | Particle Velocity (inches/second) Adjacent Lot Line | Particle Velocity Residential District |
Residential, MUI | 0.05 | 0.02 |
EC | 0.10 | 0.02 |