Creating Buildings from curves


I have file from opendata in .dgn. There are buildings made by curves. I need them to be solid.
I tried to make planes using _PlanarSrf , but not all of planes was been generated.
Is there way how to make this buildings volumes?


Hi - you should probably post the 3dm file to get useful feedback.
Are you selecting all curves at the same time and then running PlanarSrf?

here is file… I tried all of them at same time and also one by one…
I think they are not in exsact plane… Is there way to fix it ? :slight_smile:

Budovy.3dm (2.6 MB)