HY8:Contra Costa Basin: Difference between revisions

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Revision as of 20:41, 9 January 2013

Contra Costa Basin

The input variables required for this calculation is the following:

  • Baffle Block Height Ratio -- The ratio of the baffle block height to baffle block distance from the culvert.
  • End Sill Height to Maximum Depth Ratio -- ratio to determine the end sill height from the maximum depth.
  • Basin Width -- The channel width is recommended for the basin width.


The following figures show the design of a Contra Costa basin.

HY8image16.jpg

Variables from the figure

  • D -- Diameter of culvert
  • y0 -- Outlet depth
  • y2 -- Approximate maximum water surface depth
  • y3 -- Basin exit velocity
  • V0 -- Outlet velocity
  • V2 -- Exit velocity
  • h1 -- Height of small baffle
  • h2 -- Height of large baffle
  • h3 -- Height of end sill
  • L2 -- Length from culvert exit to large baffle
  • L3 -- Length from large baffle to end sill
  • LB -- Basin length


v • e
HY-8
Introduction:Getting Started   •   Layout   •   Vena Contracta   •   Building a Project   •   Locate Project   •   Culvert Crossing Data   •   Run Analysis   •   Report Generation
Crossing and Culvert Data:Crossings   •   Discharge Data   •   Roadway Data   •   Tailwater Data   •   Irregular Channel   •   Culvert Data   •   Site Data   •   Culvert Invert Data   •   Embankment Toe Data
AnalysisProject Units   •   Roadway Overtopping   •   Inlet Control Computations   •   Outlet Control Computations   •   Tables and Plots
Energy DissipationScour Hole Geometry   •   Increased Resistance   •   Tumbling Flow   •   USBR Type IX Baffled Apron   •   Drop Structures   •   Stilling Basins   •   Streambed Level Structures
MethodsAquatic Organism Passage   •   Low Flow Hydraulics
TroubleshootingDifferences from DOS HY-8   •   Limitations   •   HY-8 User Manual
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