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Town of Coventry
Town of Coventry Zoning Ordinance
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§ 255-7100

Performance standards for vibrations.

§ 255-7100. Performance standards for vibrations.

  • A. Ground-transmitted vibration shall be measured with a seismograph or complement of instruments capable of recording vibration displacement and frequency, particle velocity, or acceleration simultaneously in three mutually perpendicular directions. The maximum vector resultant shall be less than the vibration displacement permitted. Particle velocity may be measured directly or computed from the following formula: Particle Velocity = 6.28 x displacement x frequency (inches per second) (inches) (Hertz)

  • B. Vibration shall be measured at any adjacent lot line or zone boundary.

  • C. Steady-state vibrations are continuous vibrations or discrete vibrations which have greater than 60 impulses per minute.

  • D. Impact vibrations are noncontinuous vibrations with fewer than 60 impulses per minute.

  • E. The maximum permissible particle velocity of the ground measured at a residential zone boundary shall be:

    • (1) Two hundredths inches per second for steady state vibrations; and (2) Four hundredths inches per second for impact vibrations.

  • F. The maximum permissible particle velocity of the ground measured at a lot line shall be:

    • (1) One hundredths inches per second for steady state vibrations; and (2) Two hundredths inches per second for impact vibrations.

  • G. No vibration discernible to human senses shall occur:

    • (1) For three minutes or longer in any one hour between 7:00 a.m. and 7:00 p.m.; or (2) For 30 seconds or longer in any one hour between 7:00 a.m. and 7:00 p.m.