THE STATE-OF-THE-PRACTICE IN ILLINOIS--PART I

This paper presents state-of-the-practice for pavement drainage systems in Illinois. In a typical pavement section, continuous pipe underdrains run down both sides of each pavement slab. Previously, concrete headwalls were used at the end of the outlet pipes; however, it was too expensive and too much trouble putting the wire screen in the ends to keep the animals out. French drains are now used at the end of outlets, but they are clogging. Frost penetrates in Northern Illinois to a depth of 54-60 in. (137-152 cm). This presents a problem because if drains are any deeper than 24 in. (61 cm), there is no place to which they can be drained. The state has a number of filter cloths they consider acceptable, but they do not use any one cloth all the time. The cloth allows designers to go to a rather open-graded material on the inside of drainage systems, while collecting a lot of water and moving it off in a hurry.

  • Supplemental Notes:
    • This paper was presented at a 1973 workshop on Water in Pavements sponsored by the Federal Highway Administration, held in Des Moines, Iowa.
  • Corporate Authors:

    Federal Highway Administration

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

Language

  • English

Media Info

  • Pagination: p. 232-237

Subject/Index Terms

Filing Info

  • Accession Number: 00792262
  • Record Type: Publication
  • Files: TRIS, USDOT
  • Created Date: May 5 2000 12:00AM