A study was made of Utah's Flexible Pavement Performance System to introduce new methods, and to increase the accuracy of the output. The Terminal Serviceability Relationship was revised to consider not only Functional Class but also Average Daily Traffic. Parameters related to the shape of the deflection basin were reviewed, and the spreadability chart was incorporated into the system. A method to correct deflection data for temperature variations was adopted. The procedure considers the temperature history, surface temperature, pavement thickness, and the time of day of testing. A computerized pavement evaluation system was developed to aid maintenance personnel in making the most appropriate pavement rehabilitation decision. Priority listings are generated for maintenance relating to the pavement condition parameters; structural adequacy, distress, serviceability, and skid. An overall listing is also produced considering the failure modes with respect to average daily traffic, 18 Kip loads, running speeds and functional class.

  • Supplemental Notes:
    • Prepared in cooperation with DOT and FHWA.
  • Corporate Authors:

    Utah Department of Transportation

    757 West Second South
    Salt Lake City, UT  United States  84104
  • Authors:
    • Anderson, D I
    • Peterson, D E
    • Shepherh, L W
  • Publication Date: 1976-3

Media Info

  • Pagination: 112 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00141038
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: UDOT-MR-76-1 Final Rpt.
  • Contract Numbers: HPR-PL-PR 1(12)
  • Created Date: Oct 6 1976 12:00AM