DESIGN OF DEPRESSED INVERT CULVERTS. FINAL REPORT

The hydraulic characteristics of a depressed invert culvert were studied. Also, a design procedure for depressed invert culverts is outlined. The hydraulic characteristics were studied by reviewing pertinent literature and by the use of a hydraulic model. The design procedure is similar to that already used by state hydrologists. Formulas for determining the geometric properties of a depressed invert culvert are presented. The hydraulic model was used to determine the discharge coefficients for a depressed invert culvert flowing under inlet control and set flush to a vertical headwall. A literature review was performed which examined velocity profiles, flow over permeable beds, and flow resistance in culverts and over rough beds. The design procedure is applicable to depressed invert culverts flowing under nonsubmerged conditions and set flush to a vertical headwall. The design procedure can be used as an outline for the development of a comprehensive design manual for depressed invert culverts.

• Record URL:
  • http://www.dot.state.ak.us/stwddes/research/assets/pdf/fhwa_ak_rd_87_23.pdf
• 
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/40626
• Corporate Authors:

  University of Alaska, Fairbanks

  Water Research Center, Institute of Northern Engineering
  Fairbanks, AK  United States  99775

  Alaska Department of Transportation and Public Facilities

  2301 Peger Road
  Fairbanks, AK  United States  99701

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Jordan, M C
  • Carlson, R F
• Publication Date: 1987-6

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 64 p.

Subject/Index Terms

• TRT Terms: Culverts; Design methods; Fish ladders; Flow resistance; Fluid dynamics; Geometric design; Hydraulic structures; Hydraulics; Subgrade materials; Types of culverts; Velocity
• Uncontrolled Terms: Fish passage; Hydraulic models
• Old TRIS Terms: Culvert hydraulics; Depressed invert culverts; Discharge coefficients
• Subject Areas: Bridges and other structures; Design; Highways; Hydraulics and Hydrology; I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 00469167
• Record Type: Publication
• Report/Paper Numbers: FHWA-AK-RD-87-23
• Contract Numbers: F27152
• Files: NTL, TRIS, USDOT, STATEDOT
• Created Date: Jun 30 1988 12:00AM