Packet: Tiffin City Council Work Session (09/15/2026)

CHAPTER 166 ESTABLISHMENT OF ZONING DISTRICTS AND THE OFFICIAL ZONING MAP i. Vibrations not directly under the control of the property user. ii. Vibrations emanating from construction and maintenance activities between 7:00 a.m. and 9:00 p.m. Such activities are those that are non-routine operations accessory to the primary activities and that are temporary in nature or conducted infrequently. iii. Transient vibrations of moving sources such as automobiles, trucks, airplanes, and railroads. iv. Vibrations shall be expressed as displacement in inches and must be measured with a three-component measuring system approved by the Zoning Administrator. d. Maximum Permitted Steady-State Vibration Displacement Level. Frequency (Cycles Displacement (in)A Displacement (in)A per Column I* Column II* Second) 0-9 0.0008 0.0004 10-19 0.0005 0.0002 20-29 0.0003 0.0001 30-39 0.0002 0.0001 40-over 0.0001 0.0001 A Steady-state vibrations, for purposes of this Code, are vibrations that are continuous, or vibrations in discrete impulses more frequent than 100 per minute. Discrete impulses that do not exceed 100 per minute, shall be considered impact vibrations, and shall not cause in excess of twice the displacement stipulated. e. Maximum Permitted Impact Vibration Displacement Level. Frequency (Cycles Displacement (in)A Displacement (in)A per Column I* Column II* Second) 0-9 0.0016 0.0004 10-19 0.0005 0.0002 20-29 0.0003 0.0001 30-39 0.0002 0.0001 40-over 0.0001 0.0001 A Impact vibrations, for purposes of this Code, are vibrations that occur in discrete impulses separated by an interval of at least one minute and numbering not more than eight in any 24-hour period CODE OF ORDINANCES, TIFFIN, IOWA - 1690 -