DIMENSIONAL REQUIREMENTS
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UNIQUE LOT AND BUILDING LOCATIONS
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ACCESSORY STRUCTURES AND USES
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DEVELOPMENT DESIGN REQUIREMENTS
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GENERAL PERFORMANCE STANDARDS
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Frequency Band
(Cycles per Second)
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Maximum Permitted Sound-Pressure Level
(Decibels)
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---|---|---|
0 — 150
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67
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150 — 300
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59
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300 — 600
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52
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600 — 1,200
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46
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1,200 — 2,400
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40
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2,400 — 4,800
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34
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Above 4800
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32
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If the noise is not smooth and continuous or is radiated during
sleeping hours, one or more of the corrections shall be added to or
subtracted from each of the decibel levels given above.
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Type of Operation or Character of Noise
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Correction in Decibels
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---|---|---|
Noise occurs between the hours of 10:00 p.m. and 7:00 a.m.
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3
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Noise occurs less than 5% of any one-hour period
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+5
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Noise is of periodic character (hum, scream, etc.), or is of
impulsive character (hammering, etc.). (In the case of impulsive noise,
the correction shall apply only to the average pressure during an
impulse, and impulse peaks shall not exceed the basic standards given
above).
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