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v2 new feature - Equivalent Roughness Height

MIDUSS design routines use the Manning n to describe surface roughness. Users who prefer to define roughness in terms of the equivalent roughness height can use the Roughness Height tool to convert from roughness height to Manning n. Once calculated, the computed value can imported into the next design command by clicking the [Use for Design] button.
 

The conversion uses the following equation where g = gravitational acceleration and k = roughness height.

The equation is valid for fully developed, rough turbulent flow.

 

 

 


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Design makes
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Latest Update:
v2.25 Rev468
March 6, 2009
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