I have heard that conduits should be placed in the some direction as the flow. However, this creates an issue when I need to create a hydraulic run that is in the direction of my alignment for sheeting. The inverts appear to be mirrored where the outflow elevation is located at the inflow elevation.
Armin - technically it only matters when the conduit connects to a headwall. If a conduit starts at a headwall then the headwall boundary condition is set to INLET. If a conduit ends at a headwall then the boundary condition is set to OUTLET. Because of this I train folks to always create in direction of flow.
but as you noted there is an annoying bug which can create a lot of headaches with profile runs. So, if it helps you with your profiling needs then do whatever works for you. Just be mindful of headwalls.
Robert Garrett Senior Consultant
www.envisioncad.com
Answer Verified By: Armin Vlahovljak