A CONTRACTOR'S VIEWPOINT ON DRAINAGE
This paper looks at pavement drainage from a contractor's point of view. Without a uniform subgrade, pavement will experience pumping. Though difficult, contractors must place more effort on quality control during construction. Problems can arise from the use of the Jersey spreader during subbase placement. The rutting action created with this method entraps water in the subgrade. Methods should be explored to increase the spacing of pavement joints, thereby reducing the quantity of infiltrated water in pavement systems. The location of the underdrain is also important. Excavations kept under 5 ft (1.5 m) can save a lot of construction dollars, since anything over 5 ft (1.5 m) requires shoring. Horizontal drains should be located as close to the pavement edge as possible. The sequence of construction can also add to the project cost. Constructing the subdrain system after the pavement is in means the area over the drain has to be paved twice. It is suggested that contractors and engineers should meet after initial design to determine if the project is economical; once a plan becomes a design standard, it is virtually impossible to change.
- 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
- Paine, J
- Publication Date: 1973
- Pagination: p. 102-105
- TRT Terms: Construction; Contractors; Design standards; Drainage; Drains; Engineers; Excavations; Feasibility analysis; Highway engineering; Overlays (Pavements); Pavement design; Pavements; Spreaders; Subdrains; Subgrade (Pavements)
- Subject Areas: Construction; 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: 00790773
- Record Type: Publication
- Files: TRIS, USDOT
- Created Date: Apr 30 2000 12:00AM