Years ago when I drew track plans on paper, I generally used a scale of 3/4" = 1 foot, so 1/16" = 1 inch for convenience. Now I use SCARM because it makes easy work of track and turnout geometry, its relatively fast fun and easy, and has great 3-D imaging to plan scenery. SCARM has extensive track libraries for different brands of track, and you can do custom-spec flex-track arrangements. It's free software, you can't beat that!
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