When you design stormwater or sewer networks, you might need to go under some obstructions such as streams, tunnels and others. One option is to design a siphon which will cause the flow to continue:
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You can watch the video below on how to design and analyse siphons in Civil 3D with Devotech iDAS:
This video is also available on our free-of-charge Training on Demand site, Sewer channel:
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