Slotted plastic pipe has been used in agriculture as an underdrain for many years. Because of the success of this pipe in providing long term drainage, the Federal Highway Administration's Office of Federal Highway Projects in Region 8 undertook an evaluation project to determine the application of these types of underdrains in the highway industry. Their findings, as presented in Implementation Package 76--9, have shown that a properly designed slotted underdrain system is capable of quickly and efficiently removing free water from soils and pavement structures over a long period without clogging the filter system or causing siltation of the pipe. This report contains test results and findings of six underdrain systems as well as a design example and sample specifications.

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Filing Info

  • Accession Number: 00152344
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: May 11 1977 12:00AM