[quote user=“SilverSpike”]
This is my layout track plan in it’s most recent revision, as it has changed at least 100 times since it’s inception. The most recent change was to add a double crossover switch and a loop over the stairway thus allowing trains to enter the main directly from the classification yard without having to back up or reverse the locos.
Track Plan

3D View

The plans were made with 3rd PlanIT track planning software, the latest is version 8.1.03 and is a vast improvement over the previous versions. As stated previously the initial learning curve is steep, but with time and comitment it is a robust tool for developing accurate track plans. The library of track, rolling, stock, structures and such is a nice to have addition. For example the track library includes the following scales: Gm, HO, N, NMRA, O, OO, S, and Z.
Also, drilling down into the HO selections only, here are the available manufacturers:
Atlas 83, Atlas 100, Bachman EZ Track, Bemo, Bemo HOm, Bemo HOm code 70, BK Enterprise, Central Valley 70, Central Valley 83, Central Valley Imperial, Central Valley Metric, Fast Tracks HO Complete, Fast Tracks HO Sectional, Fleishmann Model Track, Fleishmann Profi Track, Kato Unitrack, Micro Engineering, Marklin C, Marklin K, Marklin M, Peco 70, Peco 83, Peco 100, Piko Setrack, Piko A-track, Pilz Elite, Roco GeoLINE, RocoLine, Shinohara 70, Shinohara 100, Shinohara HOn3, Tillig HOm, Trix Express HO, Walthers 83.
The nice feature here is that the available straights, curves, and switches are drawn to the manufacturer specifications that will match 1:1 with the actual pieces.
Here is an example of a 1:1 ratio print out of a portion of the track plan with the Walthers 83 curved turnout sitting on top of