Leaderboard

I'm not sure I understand exactly, but it sounds like you're drawing at a scale? Not 1:1? If that's the case, this is the source of your problem. If you draw everything in model space at 1:1, you can then put your title block in the paper space layout and set the printed scale in your viewport. If you're not sure how layouts and viewports work, here's a Tutorial.

A simple more manual method play with elev, this will create your plines all with a Z on correct layer all lengths will be correct, Autocad should honor the z value so highest pline and color will sit on top of the others. Or a simple add Z should be easy to provide. eg pline1 @ Z 0 pline2 @z 1 pline3 @z 2 and so on. Perimeter: 293.7853 Location: X= 68 Y= 178 Z= 0 Perimeter: 223.7853 Location: X= 134 Y= 174 Z= 2.5 Perimeter: 163.7853 Location: X= 198 Y= 178 Z= 5

The link I posted to will do exactly what you want. You have to keep your routes as polylines though.

Are there any rules to which kind of structures can exist? Do you have a more complicated example?