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Civil 3d additional surface procedure

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rod
 rod
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I have a Civil 3D surface from a year ago. The engineer has already used it for design. I recently acquired more topo points because the project limits expanded. I uploaded the points into the drawing, but when I rebuild the surface to include the new topo, the original surface changes.

What is a good procedure for adding additional topo to a surface without changing the original?

Thank you


 
Posted : May 17, 2019 9:30 pm
ken
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Add a boundary under the surface.?ÿ There are a few types...


 
Posted : May 17, 2019 10:02 pm
geoff-ashworth
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Build a new surface with the new data. Then create a new surface and paste both surfaces into it.?ÿ


 
Posted : May 17, 2019 10:04 pm