SUMMARY OF WORKSHOP SESSION ON SUBDRAINAGE
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.
- This paper was presented at a workshop on water in pavements conducted in 1973 by the U.S. Federal Highway Administration in Memphis, Tennessee.
Washington, DC United States 20590
- Moore, L H
- Publication Date: 1973
- Pagination: p. 116-119
- TRT Terms: Design; Drainage; Drainage blankets; Exploration; Filters; Groundwater; Groups; Horizontal drains; Location; Pavements; Pipe; Seepage; Slope stability; Subdrains; Subgrade (Pavements); Workshops
- Identifier Terms: U.S. Federal Highway Administration
- Subject Areas: Design; Highways; Hydraulics and Hydrology; Pavements; I22: Design of Pavements, Railways and Guideways; I23: Properties of Road Surfaces; I26: Water Run-off - Freeze-thaw;
- Accession Number: 00792148
- Record Type: Publication
- Files: TRIS, USDOT
- Created Date: Apr 30 2000 12:00AM