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Set reference surface for multiple pipe networks in Civil 3D

If there are question marks in the pipe network longitudinal section (profile view) instead of ground-level values, you need to set the reference surface:

You can set the reference surface in the pipe and structure grid view for each and every network individually which can be time-consuming. If you want to save some time, use the iDAS Set Ref Surface command:

Select the networks you want to assign the reference surface to as well as the reference surface:



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