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.
- This paper was presented at a 1973 workshop on Water in Pavements sponsored by the Federal Highway Administration, held in Des Moines, Iowa.
Washington, DC United States 20590
- Benson, G R
- Publication Date: 1973
- Pagination: p. 232-237
- TRT Terms: Backfill soils; Ditches; Drainage; Drainage practices; Drainage structures; Drains; Filter fabric; Frost; Groundwater; Infiltration; Open graded aggregates; Pavements; Pipe; Plugging; Portland cement concrete; Rainfall; Snowmelt; State of the practice; Subbase (Pavements); Subdrains; Subgrade (Pavements); Trenches; Water
- Geographic Terms: Illinois
- Subject Areas: Design; Geotechnology; 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: 00792262
- Record Type: Publication
- Files: TRIS, USDOT
- Created Date: May 5 2000 12:00AM