From the Ground Up
A European perspective on design and out of the box thinking with Civil 3D.
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- posted 02/09/07 by Jack Strongitharm Visualisation Part 1 - Cutting out holes
- To create a visualisation of a new site you will typically have a existing ground surface which requires the old areas to be removed so that the new design fits inside.
Rather than deleting parts of that surface, which may have gradings and corridor targeting it, the best practice is to make a copy first.
1. Create a new surface
2. Under definition - edit – paste add the existing ground.
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3. This now replicates the surface
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4. You should have a boundary to where the new meets the old and drape to 3D using the featureline toolbar
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5. Add this line as a breakline
6. Add the same line again, but as a boundary with the hide selection
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7. Result one surface with a hole.
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The reason behind adding the line as a breakline rather than a non destructive boundary is that you can move the boundary at anytime and update the surfaces. This works very well with golf course bunkers, which reminds me its weekend!!
Jack Strongitharm