This paper summarizes a workshop session discussion held as part of a 1973 Federal Highway Administration workshop on water in pavements in Memphis, Tennessee. The topic of the discussions was the location and design of underdrains for groundwater seepage. The subject was considered in four categories: exploration methods, underdrain location for flowing groundwater, control of static groundwater, and filter design. All of the states represented agreed that they take advantage of the knowledge of geological deposits and that their previous experience in similar deposits helped them in planning and carrying out the exploration and investigation at a particular location. There was general agreement that more emphasis should be placed on filter design for underdrains. With regard to the control of static groundwater, most states indicated that they used 4-ft (1.2-m) deep ditches (with underdrains) if they are intercepting groundwater not being drained from the pavement section. In some critical areas, crushed-stone drainage blankets have been used to intercept groundwater from the subgrade.

  • Supplemental Notes:
    • This paper was presented at a workshop on water in pavements conducted in 1973 by the U.S. Federal Highway Administration in Memphis, Tennessee.
  • Corporate Authors:

    Federal Highway Administration

    Office of Research, Development, Engineering and Highway Operations, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590
  • Authors:
    • Moore, L H
  • Conference:
  • Publication Date: 1973


  • English

Media Info

  • Pagination: p. 116-119

Subject/Index Terms

Filing Info

  • Accession Number: 00792148
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: Apr 30 2000 12:00AM