AMFLEET,
I built a shelf layout around my loft train room, it is 12 inch wide with 4 inside curves and one outside curve with 2 tracks, I settled for 031 and 036 curves to keep it manageable, then built my lower main layout under it. I used MDF and 3/4 White Pine for the shelf, with Korbels every 3 feet for support. I only put foam roadbed under the Gargraves track as it had to be above the windows and this only left about 10 inches of room. It is a bit noisy but my loft is isolated enough and the wife works full time so I get plenty of track time in. I run long trains on this, the walls are 24 feet and I have 19 MTH Premier UP Coal cars behind 2 GP-38-2 Williams on the inner track, and 17 BN boxcars,spine cars and caboose behind a Williams F-7 AB with both powered. It is nice having trains above as well as below.
