@rplst8 posted:Clearances in most places are at or near 7". There are a few tighter areas, but those are usually limited to crossovers, not "parallel" operation. There are a few places that will have viaduct style elevated portions with a span or truss or something.
Here's an angle view where you can see the elevations. Note, Scarm does some weird things when tracks are near the edge of the board - the actual area is larger than this would show. Also, It doesn't let me line up tunnel entrances nor do ganged tunnels (which I plan on doing in the real thing).
The lowest staging level is not shown in this illustration. Will the 2nd, 3rd, and 4th levels be supported by piers with the staging level open beneath those piers? So only the staging tracks under the two end mountains will be hidden?
Can you do a 3d with the staging tracks visible, with tunnels into the end mountains?
If this is correct, sorry I did not understand at first - the piers shown are not regular in spacing or design, so they looked like an artifact of the 3d representation, not a design intention.
So, have you worked out the supporting pier placement for the 2nd, 3rd, and 4th levels so that they do not come down on the staging tracks at the lowest level?
What are you planning for these elevated levels, spanning long distances in the air? Plywood supported on dowels? Trestle bents?
