HYDRAULIC PERFORMANCE OF CULVERTS WITH SAFETY GRATES

The purpose of this research was to establish through an experimental study, the hydraulic characteristics of culvert end treatments (safety grates) on both box and pipe culverts. A significant amount of work has been performed in the past to establish the hydraulic characteristics of culverts, but there has been very little effort to study the hydraulics of culverts with grates. A 1:4 scale model was built to simulate flow conditions in a 5 x 8-ft box culvert. Investigators also tested a 1:4 scale model simulating flow in a 60-in. helical corrugated metal pipe culvert. The slopes of the culverts, the flowrates and the elevations of the tailwater were varied to simulate the various types of flow conditions which can exist in a highway culvert. The box culvert was tested with no safety grates, pipe safety grates and bar safety grates. The pipe culvert was tested with no safety grates and pipe safety grates. A regression analysis of the experimental data was performed so as to relate (1) for outlet control, the various hydraulic parameters to the entrance headloss coefficient, and (2) for inlet control, the headwater depth to the discharge. (FHWA)

• Corporate Authors:

  University of Texas, Austin

  Center for Transportation Research, 3208 Red River Street
  Austin, TX  United States  78705

  Texas State Department of Highways & Public Transp

  P.O. Box 5051
  Austin, TX  United States  78763

  Federal Highway Administration

  1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Mays, L W
  • Walker, M E
  • Bennett, M S
  • Arbuckle, R P
• Publication Date: 1983-3

Media Info

• Pagination: 342 p.

Subject/Index Terms

• TRT Terms: Box culverts; Corrugated metal culverts; Culvert inlets; Culvert outlets; Culverts; Flow; Grates; Hydraulics; Performance; Pipe culverts; Safety; Scale models
• Old TRIS Terms: Culvert hydraulics
• Subject Areas: Bridges and other structures; Highways; Hydraulics and Hydrology; Safety and Human Factors; I26: Water Run-off - Freeze-thaw;

Filing Info

• Accession Number: 00376396
• Record Type: Publication
• Report/Paper Numbers: FHWA/TX-82/55+301-1FFinal Rpt.
• Contract Numbers: 3-5-80-301
• Files: TRIS, USDOT, STATEDOT
• Created Date: Aug 30 1983 12:00AM