This report presents the results of an acoustical scale modeling research effort in which the performance of special noise barrier shapes is compared to the performance of conventional noise barriers. This effort is a follow-up to previous work (Phases I and II) in which various barrier shapes were examined for increased performance and cost-saving potential. The results of this study provide generally good agreement with the results predicted by the Phase II project. While not exactly reproducing the theoretical performance of the special barrier shapes, this scale modeling effort has demonstrated that an increase in performance can be expected by implementation of these special barrier shapes. The report concludes that while these special barrier shapes did not provide the magnitude of insertion loss expected, the results do indicate an increased barrier performance using them. A recommendation for implementation of the special noise barrier shapes on specific actual projects is then made.

  • Record URL:
  • Supplemental Notes:
    • See also the Phase I report (TRIS 628804) and Phase II report (TRIS 681894).
  • Corporate Authors:

    University of Louisville

    Department of Civil Engineering
    Louisville, KY  United States  40292

    Washington State Department of Transportation

    Transportation Building, 310 Maple Park Avenue SE, P.O. Box 47300
    Olympia, WA  United States  98504-7300

    Federal Highway Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Cohn, L F
    • Harris, R A
  • Publication Date: 1996-1-31


  • English

Media Info

  • Features: Tables;
  • Pagination: 26 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00720106
  • Record Type: Publication
  • Report/Paper Numbers: WA-RD 378.3
  • Created Date: Apr 9 1996 12:00AM