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Old 08-08-2008, 10:21 AM
limno limno is offline
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Join Date: Aug 2008
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Weir Coefficient

Hello,
How is the weir coefficient (Cd) for a lateral weir calculated in the HEC-RAS model. HEC-RAS had a default value of 1.11 (SI units), which I decreased to 0.611. Is 0.611 a low value for Cd?

What is a reasonable value or a range for Cd (in SI units) that one can apply.

Also, how Cd is different from the "Weir Coef" used for Bridge Deck in the HEC-RAS.

Thanks!

-Pranesh.
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