Vibration

• (a) Vibration shall be measured from the nearest property line in a C-5 district or an I-1 or I-2 district and from the nearest I-3 district boundary line in an I-3 district.

• (b) No vibration is permitted which is discernible to the human sense of feeling for three minutes or more duration in any hour of the day between 7:00 a.m. and 7:00 p.m. or of 30 seconds or more duration in any one hour between 7:00 p.m. and 7:00 a.m. No vibration at any time shall produce an acceleration of more than 0.1g or shall result in any combination of amplitudes and frequencies beyond the safe range of Table 7, U.S. Bureau of Mines Bulletin No. 442, Seismic Effects of Quarry Blasting, on any structure. The methods and equations of such bulletin shall be used to compute all values for enforcement of this regulation.

(Rev. Ords. 1987, § 19-342)