Here is a shot of freight running on my layout in progress. The 4-6-2 Pacific is lettered with the "tilted wafer" for CN. Pulling about 10 cars, including caboose. It is just passing the turnout to the yard. HO scale.
Yes, it is Code 100 sectional. If I had to do it again, I would use code 83 flex I think. The era is supposed to be 20s and 30s, so the really heavy stuff was pretty rare. I also use snap swiches for the tight turns required by a 4x8 layout, but I looked at a PECO code 83 Y the other day at the LHS, and, well, drool drool drool... Very nice! Maybe next time!
I looked at your pictures in the homasote thread Val, and I think you are further ahead.... It has taken me 2 years to get to track sitting on plywood! It is not even attached, I have cork roadbed to install next, which I got almost a year ago. I have finally finished the elevations just this past weekend. I used cookie cutter with 1/2" plywood. I had experimented with homemade blue styrofoam risers and grades, but decided against it in the end.