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CORRESPONDENCE/MEMORANDUM STATE OF WISCONSIN DATE: October 28, 1992 TO: Bill Fleck NOV 0 2 1992 Dane County Zoning Administrator RECEIVED ZONING DIV. FROM: Robert W. Patenaude, P.E. Geophysical Engineer _ - SUBJECT: Blasting Vibration Limits The current blasting level criteria for dwellings as adopted by Wisconsin DILHR in the Wisconsin Administrative Code was developed by the U.S. Bureau of Mines as the result of years of investigation of the effects of surface blasting in coal mines and quarries. In 1962 1 USBM Report of Investigation 5968, Review of Criteria for Estimating Damage to Residences From Blasting Vibrations, recommended a peak particle velocity for dwellings of 2 inches per second. Subsequent Bureau of Mines Reports include: Blasting Vibrations and Their Effect on Structures, Bull. 659, 1971., RI 8485, 1980; and RI 8506, 1980; culminating in the current criteria presented in RI 8507, Structural Response and Damage Produced by Ground Vibration From Surface Mine Blasting, 1980, which recommended frequency dependent criteria and a lower limit of 0.5 inches per second for plaster wall dwellings (see enclosure). Studies of vibration effects continued with USBM Report RI 8896, Effects of Repeated Blasting on a Wood Frame House, 1984, and RI 8969, Blast Vibration Measurement on Structure Foundations, 1985. Subsequent reports have confirmed the criteria presented in RI 8507 and adopted by DILHR. These reports are in addition to those produced by Universities and other agencies. Our field experience has indicated that the RI 8507 criteria are reasonable and adequate. Some representative particle velocities associated with household activities are shown in enclosure #1. This enclosure also indicates that strain associated with daily changes in temperature and humidity can equal strain levels associated with higher vibration levels. Some suggested conservative vibration limits are presented by the Federal Highway Administration (enclosure #2). E.Regarding the petroleum pipe, enclosure #3 indicates that this is not a simple matter. At the very least, the age and condition of the pipe should be known together with internal pressure the pipe, but in general a buried petroleum pipe in good condition and not corroded should be able to withstand a vibration level of at least two inches per second. RWP:a13941 cc: Rich Bingham 4. •