§ 97.01 DEFINITIONS.
   For the purpose of this chapter, the following definitions shall apply unless the context clearly indicates or requires a different meaning. All technical terms, unless the context otherwise requires, shall be defined in accordance with the American National Standards Institute publication, 5.1.1-1960 as revised in 1971, published by the American Standards Institute, 1430 Broadway, New York, N.Y. 10018.
   COMMERCIAL DISTRICT. Includes, but not be limited to, any parcel of land zoned commercial under the zoning provisions of the city as set forth in Ch. 155 of this code of ordinances, Zoning, as well as the following:
      (1)   An area where offices, clinics and the facilities needed to serve them are located;
      (2)   An area with local shopping and service establishment;
      (3)   A tourist-oriented area where hotels, motels and gasoline stations are located;
      (4)   A business strip along a main street containing offices, retail businesses and commercial enterprises; and
      (5)   Other commercial enterprises and activities which do not involve the manufacturing, processing or fabrication of any commodity.
   COMMERCIAL PURPOSE. Includes the use, operation or maintenance of any sound-amplifying equipment for the purpose of advertising any business, any goods or any services, or for the purpose of attracting the attention of the public to, or advertising for or soliciting the patronage of customers to or for any performance, show, entertainment, exhibition or event, or for the purpose of demonstrating any sound equipment.
   CONSTRUCTION ACTIVITIES. Any and all activity incidental to the erection, demolition, assembling, altering, installing or equipping of buildings, structures, roads or appurtenances thereto, including land clearing, grading, excavating and filing.
   CONTINUOUS NOISE. A steady, fluctuating or impulsive noise which exists, essentially without interruption, for a period of ten minutes or more, with an accumulation of an hour or more over a period of eight hours.
   DEVICE. Any mechanism which is intended to produce or which actually produces sound when operated or handled.
   DYNAMIC BRAKING DEVICE. A device used primarily on trucks for the conversion of the motor from an internal combustion engine to an air compressor for the purpose of braking without the use of wheel brakes.
   EMERGENCY WORK. Work made necessary to restore property to a safe condition following a public calamity, or work required to protect persons or property from an imminent exposure to danger or potential danger.
   FLUCTUATING NOISE. The sound pressure level of a fluctuating noise which varies more than six dB(A) during the period of observation when measured with the slow meter characteristic of a sound level meter.
   INDUSTRIAL DISTRICT.
      (1)   An area in which enterprises and activities which involve the manufacturing, processing or fabrication of any commodity are located.
      (2)   INDUSTRIAL DISTRICT shall include, but not be limited to, any parcel of land zoned as an industrial district, under the zoning provisions of the city (Ch. 155 of this code of ordinances, Zoning).
   MOTOR VEHICLE. Any vehicle such as, but not limited to, a passenger vehicle, truck, truck-trailer, trailer or semi-trailer propelled or drawn by mechanical power, and shall include motorcycles, snowmobiles, minibikes, go-carts and any other vehicle which is self-propelled.
   RESIDENTIAL DISTRICT.
      (1)   An area of single- or multiple-family dwellings and shall include areas where multiple-unit dwellings, high-rise apartments and high-density residential districts are located.
      (2)   RESIDENTIAL DISTRICT shall also include, but is not limited to, hospitals, nursing homes, homes for the aged, schools, courts and similar institutional facilities.
   SOUND LEVEL METER.
      (1)   An instrument or apparatus including a microphone, an amplifier, an output meter, and weighing networks for the measurement of sound pressure.
      (2)   The output meter reads sound pressure level when properly calibrated, and the instrument is of Type 2 or better as specified in the American National Standards Institute publication 51.4-1971.
(1994 Code, § 97.01) (Ord. 318, passed 5-10-1982)