City of Omaha Standard Curb Inlet

[h2omusc]

I am trying to do some inlet calculations in Hydraflow Express and am having some trouble modeling the standard City of Omaha inlet. I have attached their standard plate. Based on the user guide and instructions, I think that the throat height should be 0 and the depression should be 5.5 inches but Hydraflow doesn't allow for a 0 throat. Can anyone with more experience than me confirm or deny my thoughts and suggest what my values should be? Thanks.

Caleb Beasley, EI

[Anonymous]

The Throat Height should be measured from the extension of Sx (slope of
the road)

Your opening is 5 - 1/2" from top of opening to a depression.

Matthew Anderson, PE


On 5/25/2010 5:02 PM, h2omusc wrote:
> I am trying to do some inlet calculations in Hydraflow Express and am having some trouble modeling the standard City of Omaha inlet. I have attached their standard plate. Based on the user guide and instructions, I think that the throat height should be 0 and the depression should be 5.5 inches but Hydraflow doesn't allow for a 0 throat. Can anyone with more experience than me confirm or deny my thoughts and suggest what my values should be? Thanks.
>
> Caleb Beasley, EI
>