I want to thank you all for your ideas.
The RAS Team had replied back to me and instructed me how to perform this study. They said use the ground line to account for the channel and top of sidewalk. Use the deck to account for the arch.
Dear francesca,
The problem I experienced by modeling it as a bridge was that an error occured "Station data is not in increasing order, stationing needs to maintain (vertical walls) or increase. Any ideas how to get around this?
I am interested in using HEC-RAS to calculate the water surface and flows through a 60' long, 7' x 14' arch culvert pipe with a 3' wide 14" high sidewalk obstruction located in a portion of the pipe.
I have routed the stormwater runoff from the 500 acre watershed area through the existing 7' x...