Urban Storm Runoff Inlet Hydrograph Study Vol 2. Laboratory Studies of the Resistance Coefficient for Sheet Flows Over Natural Turf Surfaces

Details

• Creators:
  Chen, C. L.
• Corporate Creators:
  Utah Water Research Laboratory
• Contributor:
  Woo, Dah-Cheng
• Corporate Contributors:
  United States. Department of Transportation. Federal Highway Administration. Office of Research and Development
• Subject/TRT Terms:
  • Urban areas
  • Drainage
  • Runoff
  • Hydrographs
  • Culvert inlets
• Publication/ Report Number:
  FHWA-RD-76-117
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Contracting Officer:
  Woo, D.C.
• Corporate Publisher:
  United States. Federal Highway Administration. Office of Research and Development
• Description:
  The main objective of this study is to develop an accurate design method for computing inlet hydrographs of surface runoff, with average recurrence intervals of 10, 25, and 50 years, from typical urban highway by flood routing technique. Resistance to sheet flows over natural turf surfaces is experimentally investigated. The formulation of a functional relationship between the resistance coefficient and controlling parameters for shallow flows over various turf surfaces is essential to the mathematical modeling of surface runoff from urban highway sideslopes covered with different species of turf. An analysis of results obtained from laboratory experiments for laminar flow on Kentucky Blue grass and Bermuda grass reveals that a relationship exists between the Darcy-Weisbach friction coefficient, Reynolds number, and bed slope.
• Format:
  PDF
• Funding:
  DOT-FH-11-7806
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/67438/dot_67438_DS1.pdf
• File Type:
  [PDF - 7.95 MB]
• Collection(s):
  Federal Highway Administration
• Main Document Checksum:
  urn:sha-512:3348035a39d43eeecf3ad90ec1cf0a3f2328d198292d1c02ae9388048812f24d5c9233aede82563cfd59f7dfd1285877b9f05e6389f29e220775b56f2f5a21e8