I tore my old layout down in the spring and totally rehabbed the basement. It is now sufficiently completed for me to start my new layout plan. I had to first negotiate space allowed from spouse; ended up with about 13.5 ft x 16.5 ft partially underneath stairs. After much review on this forum and reading several books, I decided on a two level layout with access panels to get to the various points on the layout. A friend helped me get started and then I downloaded SCARM and started using it. While I have not mastered the software, I put together a concept to start. I have attached the file. There are two walls and the rest is open to the basement.
My basic concept was to be able to have a double main line on lower level and a connected upper level. All tracks need to connect so a train can go anywhere. I used Fasttrack to design layout with O48 on top level and O60 and larger on lower level. I have a passenger station that I placed on the layout. I do have some steam engines and a water tank, coaling tower and sanding tower I would like to place somewhere. Don't have too many other items but may want to add a few post war items I have in storage; oil derrick and auto milk car.
George