a graph to plan a electric train set?

Answer 1

I built one but I didn't use plans, I left it to my imagination, and remember I was working on it six months, I made all the carpentry and painting, expensive hobby..☺

Answer 2

Go to this web site and click on "Custom Layouts", then scroll down to click on "Get some layout ideas".
http://kittworks.com/

Also here:
http://www.thortrains.net/marx/kdlay27a.html
or
http://www.thortrains.net/