Why are the computed headlosses shown to be zero in some inlets when using the HEC-22 headloss method? (2nd edition)Problem ID#: 58020
This is occurring because the HEC-22 method does not apply to an inlet without conduits coming into and out of the inlet. For instance, the upstream-most inlet will always have a headloss of zero with this method since there is no conduit coming into it. In such cases, it is recommended to use the Standard method with a headloss coefficient of 0.5, which is typical for entrance headlosses to a structure.
What are the differences between the HEC-22 3rd Edition and HEC-22 2nd Edition headloss methods?
Inlet flooding with the HEC-22 Third Edition headloss method, but not with the HEC-22 Second Edition headloss method