PRACTICAL GUIDANCE FOR DESIGN OF LINED CHANNEL EXPANSIONS AT CULVERT OUTLETS

This report presents the detailed results of research conducted to develop practical guidance for design of lined channel expansions at culvert outlets and summarizes the results of related research efforts of the U. S. Army Engineer Waterways Experiment Station during the past decade to develop practical guidance for estimating and controlling erosion downstream of culvert and storm- drain outlets. Empirical equations and charts are presented for estimating the extent of localized scour to be anticipated downstream of culvert and storm-drain outlets and the size and extent of various natural and artificial type revetments and energy dissipators that may be used to control localized scour. With these results, designers can estimate the extent of scour to be expected and select appropriate and alternative schemes of protection for controlling erosion downstream of culvert and storm-drain outlets. /FHWA/

• Supplemental Notes:
  • Study sponsored by Louisiana Dept. of Highways.
• Corporate Authors:

  U.S. Army Waterways Experiment Station

  3909 Halls Ferry Road
  Vicksburg, MS  United States  39180-6199
• Authors:
  • Grace Jr, J L
  • Fletcher, B P
• Publication Date: 1974-10

Media Info

• Pagination: 90 p.

Subject/Index Terms

• TRT Terms: Channel linings; Culverts; Design; Erosion; Froude number; Scour; Storm sewers
• Old TRIS Terms: Frounde number
• Subject Areas: Bridges and other structures; Design; Highways; Hydraulics and Hydrology;

Filing Info

• Accession Number: 00080937
• Record Type: Publication
• Source Agency: Federal Highway Administration
• Report/Paper Numbers: Tech Rept. H-74-9 Final Rpt.
• Contract Numbers: 70-1H
• Files: TRIS, USDOT
• Created Date: Mar 26 1975 12:00AM