hey i am from chicago and i have a ho railroad just about ready to run totally about14x16 total wall to wall with flip ups for access. I have a question though for my l line how much space do you need for a 10 inch platform i have riser kits with plaster cloth for a good appearance and 2 10 inch platforms about 5 inches wide. I am talking about length only width is not a problem this is scratch built. i will check back on friday.