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[[Category:Energy Dissipators]]
[[Category:Energy Dissipators]]
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.
Variables from the figure             
* D — Diameter of culvert
* y<sub>0</sub> &mdash; Outlet depth
* y<sub>2</sub> &mdash; Approximate maximum water surface depth
* y<sub>3</sub> &mdash; Basin exit velocity
* V<sub>0</sub> &mdash; Outlet velocity
* V<sub>2</sub> &mdash; Exit velocity
* h<sub>1</sub> &mdash; Height of small baffle
* h<sub>2</sub> &mdash; Height of large baffle
* h<sub>3</sub> &mdash; Height of end sill
* L<sub>2</sub> &mdash; Length from culvert exit to large baffle
* L<sub>3</sub> &mdash; Length from large baffle to end sill
* L<sub>B</sub> &mdash; Basin length

Latest revision as of 16:46, 4 December 2014


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.


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

File history

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Date/TimeThumbnailDimensionsUserComment
current ★ Approved revision
13:07, 7 November 2007
Thumbnail for version as of 13:07, 7 November 2007457 × 504 (28 KB)Eshaw (talk | contribs)

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