There will be 4 loops in this initial layout. Initially I had more hills and trestles on more of the loops. Then I did some grade testing to see what my locomotives could do on grades, and I subsequently flattened a couple of the loops out.
The themes in this layout are logging, farming, and small town life. All of my locomotives are steam engines, and era will be early 1900's.
The darker green loop going around the mountains will be the logging train. It will loop around up the mountain on the left, cross a long high bridge on the front side (bottom of drawing) to the mountain on the right, loop around back down and cross a lower bridge on the back side.
The blue loop is the perimeter loop, and will be a freight train. The ligher green loop in the middle will be the passenger train. The red loop is what I am calling the "work" train, having a variety of different "work" cars like crane and style of caboose known as a "working caboose".
In case you're wondering what I mean by "initial" layout, phase 2 of this project a couple years down the road will nearly double the size of the layout and add a mining theme.
The various "+" numbers on the tracks are elevations measured in feet above base grade. A big part of the rough calculating at this stage of the game was keeping the grade at 5% or less, and adjusting the block cutting "recipe" accordingly.
I had read that the models, with their electric motors, would be capable of pulling unrealistic loads. I found that my models actually performed somewhat true to life. The 3-truck Shay could pull a heavy load up a steep grade - exactly what it was designed to do in real life. The 4-6-0 on the other hand could barely pull itself up a steep grade. The problem was not wimpy motor, the problem was wheel slippage. And wheel slippage was also a real life problem for the real steam engines.