A problem about selecting room bounding elements from a specific area

[Anonymous]

I need to select all room bounding elements (mainly walls and room separation lines) within a certain area, and replicate them on a new level with room separate lines. The difficulty for me is the selection process: some walls go though the specific area, but I only need the part that's within the area; I also need to make sure the elements don't overlap, otherwise I may have a problem when creating the room separation lines on the new level.

Anyone has any clue how to do it? Really appreciate the help!

[Joe.Ye]

Not quite sure your idea.
Would you like to describe the question with more details?

[Anonymous · Accepted solution]

Hi Joe,

I just figured it out myself yesterday. Thank you for your reply!