Welcome to the RAS Solution › Forums › HEC-RAS Help › 2 Reaches Join Through 2 Culverts

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  • July 24, 2017 at 10:37 pm #6551
    Anonymous
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    I have a case where Reach A and Reach B join to create Reach C. However, Reach A goes through a culvert, and Reach B goes under a bridge, and they outlet at the same location to start Reach C. How would I model this scenario?

    Thanks,
    Raz

    July 25, 2017 at 2:18 am #10756
    Anonymous
    Guest

    I would create a junction to join reach A and B. Put the culvert in reach A and the bridge in reach B. You will have to have a couple of cross sections downstream of the bridge and a couple of cross sections downstream of the culvert before A and B join. If the cross sections downstream of the bridge and the culvert have short reach lengths, you could probably still get decent results.

    If you have terrain data, you could consider using 2D flow, although 2D does not currently allow pressurized bridges.

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