Even though I didn't set out with a concrete track plan, I did have a general concept in mind. After I got most of the benchwork in and was well on my way to building the roadbed, I took some time to develop this track plan. The room measures just under 10 feet (3m) square. The U-shaped layout provides easy access into the room and access to the closet in the room. It is built on top of bookcases and other cabinets. The track plan shown below was the final plan. The turntable and right-hand side were on the main level. As the mainline curves into the center section, one line goes up in elevation, while the other goes down. On the left-hand side of the design there are two levels with about a two-inch separation.