Orange County NC Website
TABLE B <br /> Maximum Ground Transmitted Vibration Permitted <br /> kmaximum Particle Velocity in inches/seconds <br /> Zoning District Non-Residentially Residentially <br /> Zoned Land Zoned Land <br /> NC-2, 1-2 0.10 0.02 <br /> CC-"3, GC--4, 1-3, AS 0.20 0,02 <br /> NOTE A: <br /> i <br /> The instrument used to measure vibrations shall be a three <br /> component measuring system capable of simultaneous measure- <br /> ment of vibration in three mutually perpendicular diretions, <br /> NOTE B. <br /> The vibration maximums set forth in Table B are stated in <br /> terms of particle velocity, which may be measured directly <br /> with suitable instrumentation or computed on the basic of <br /> '- displacement frequency. when computed, the following <br /> formula shall be used: <br /> 1 <br /> P.V. = 5.28 F x D <br /> P.V. = Particle velocity inches per second <br /> F = Vibration frequency, cycles per second <br /> O = Single amplitude displacement of the vibration, inches <br /> The maximum velocity shall be the vector of the three components <br /> recorded. <br /> d? The values stated in Table B may be multiplied by two for <br /> impact vibrations, i.e., discrete vibration pulsations <br /> not exceeding one second between pulses. <br /> e? Vibrations resulting from temporary construction activity <br /> that occurs between 7:00 a.m. and 7:00 P.M. shall be exempt <br /> from the requirements of this subsection. <br /> t <br /> 6.14.8 Odors <br /> For purposes of this section, the "odor threshold" is defined <br /> as the minimum concentration in air of a gas, vapor, or <br /> s, particulate matter that can be detected by the olfactory <br /> systems of the Seas Saniterian, and the Zoning Officer. <br /> No Permitted Principle Use, Special Use, or Accessory Use <br /> shall generate any odor that reaches the odor threshold, <br /> I measured at: <br /> i <br /> 6-1B <br />