Laserfiche WebLink
-31- <br />Subpart 2 provides that equipment must meet the requirements <br />specified in Part 7010.0060, supart 2. This is reasonable <br />because sound measuring devices are the same for measuring noise <br />or measuring attenuation, so the same equipment requirements <br />should be applied. <br />Subpart 3 provides that the equipment must meet the <br />calibration requirements specified in Part 7010.0060, subpart 3. <br />This is reasonable because sound measuring devices are calibrated <br />in the same manner whether the devices are used for measuring <br />noise levels or attenuation., so the same requirements should <br />apply. <br />Supart 4 provides that measurement procedures described in <br />FWHA-DP-46-1R, Section 8, must be used for determination of sound <br />attenuation. Accepted, standardized methodologies have been <br />established for measuring sound attenuation on acoustical <br />products and for acoustical rasearch. There are no accepted, <br />standardized procedures for measuring sound attenuation in the <br />specific applivation called for in this rule.. Because of this, it <br />is reasonable to require the use of the procedure described in <br />FHWA-DP-45-1R because this document provides reasonable <br />guidelines for the measurement of sound attenuation. <br />Subpart 5 provides that the Director shall approve the use of <br />any method other than those described in Subpart 4 if the <br />Director finds that the method results in reliable data. Because <br />