I have all but memorized Tony Koester's book on the subject and have visited and operated on some great ones. But I've never quite been a fan of the multi-deck for my purposes. At least I don't think so. I was heartened when I read of Marty McGuirk's dismantling of his upper level and especially related to his reasons why, which he mentioned in his blog, and expounded upon in an issue of Model Railroad Hobbyist.
I do like having one deck at optimal working, viewing and operating height rather than two at compromised ones. I dislike having to worry about more lighting... and I do have to acknowledge the modest ceiling height with which I'm working. But most of all, I just prefer the look, or presentation if you will, of a single deck.
But I enlisted the help of Bob Sprague, planner extraordinaire, in a what-if, why-not scenario. I figured it's worth the beer that he charges! Hang on, here we go.
To be fair to Bob, he urged a plan that utilized the helix for staging areas with return loops and consistent direction, but it required a two-level gate across the 24" entry which is a feature I really dislike. That's it for now. A lot to think about. Wouldn't mind getting some viewpoints from you all out there! Do comment.
BONUS: RHETORICAL QUESTION OF THE DAY...
Did you know that you can learn more about the work of Marty McGuirk , Bob Sprague and Ted DiIorio by clicking on the sidebars for Central Vermont Railway, Annapolis Junction Railroad and Ma & Pa Railroad respectively?