It is tempting to set up layers for each of the different floor levels on…
When you finish, you should certainly end up with walls. You can use lines to help get the walls started, and to set up control lines, but the end result should be walls.
The reason we need walls, is that you will need to show demolished walls, proposed walls, additional windows, and new doors. If you do not draw with walls, it will not be easy to show this information, and it will not be as easy to add doors and windows.
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