here’s your imported plan : Model.skp (326.5 KB)
What I had to do was :
- your plan in autocad was very far from origin.
- many layers were hidden, but sketchup is still going to import them. I assume you’d had hidden all the ones you did not need. So I selected everything that was visible and pasted it in a new file (still in autocad, and that time close to origin)
- your dwg was not in 2D, possibly because it was drawn above a file that was given by a surveyor that had 3d information. see screenshot :
you can either fix that using flatten command in autocad while beeing on top view, or use plugin in sketchup such as flatten selection among thomthom’s architect tools