CulvertLength Property
Models the flow through typically longer pipe between limiting cross sections (up- and down- stream).
The pipe my have any cross section geometry and may be either closed or open.
The culvert such that critical flow conditions are calculated prior to calculation of the actual flow. The
critical flow conditions are typically by activating the CalcCriticalConditions method from a
user interface The result of this procedure is stored as part of the culvert specification.