Mark, I have been enjoying your progress. I know how satisfying it was building my layout. Your second level is a great idea and please don't take this as overly critical. You could reduce your grade and increase your clearance by just supporting the plywood with posts, without the boards. A Railking Husky Stack is 5 3/8" from the base sitting on Gargraves track alone. I used 6" concrete wall forms to hold mine, and I hardly have a splinter or wire's clearance. Mine is 7' wide with supports around the edge and one in the middle, and absolutely no sag. If this is moot because you never plan on any rolling stock that high, then keep up the good work. If I ever get a scale sized stack, I wont be able to run it on the lower track, so I'm just throwing this into the mix. Enjoy, enjoy, enjoy!
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