Unknown bridge foundations are experiencing higher priority by state departments of transportation. Within this scope lies perhaps thousands of piles for which no driving records exist. To help resolve this problem, a technology based upon the mechanics of dispersive stress wave propagation was developed by the principals of FDH, Inc., for finding unknown timber pile lengths. Since its original development, the technology has been expanded to address the problem of unknown pile lengths for other materials as well. Recognizing that unknown foundations are a problem, the Mississippi Department of Transportation (MDOT) recently implemented an aggressive program to evaluate bridges statewide. A multiyear, unknown foundation investigation program was initiated with Mobile, Alabama based FDH-North America, L.L.C., with the Department of Civil Engineering at Mississippi State University as project administrator. Presented are the results from two timber pile bridges that were tested using FDH methods and the piles subsequently extracted by MDOT to verify the technology.

  • Availability:
  • Supplemental Notes:
    • This entry in the TRIS database is made from the hardback copy of the conference proceedings, which are also available on CD-ROM.
  • Corporate Authors:

    Technomic Publishing Company, Incorporated

    851 New Holland Avenue, Box 3535
    Lancaster, PA  United States  17604
  • Authors:
    • Holt, J D
    • Slaughter, S H
  • Conference:
  • Publication Date: 2000


  • English

Media Info

  • Features: Figures; References;
  • Pagination: p. 109-116

Subject/Index Terms

Filing Info

  • Accession Number: 00793112
  • Record Type: Publication
  • ISBN: 1566769493
  • Files: TRIS
  • Created Date: May 2 2000 12:00AM