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[MountainMan]

Id like to attempt a double deck around the room shelf layout and have some questions: 1st is what is a good height between decks and 2 best way to reach the 2nd shelf minus the helix? Also any other tips or ideas will help. Thanks

Measure your sight lines starting with your selected height for the top deck. You sightlines should allow unencumbered sight of the lower deck from that point.

If you are not using a helix, you have two basic choices:

1. a gradual round-the-room climb to the upper level, or

2. an elevator. Several articles on this approach have shown up over the years in the modeling mags, but essentially you use a "cassette" system with allowance for vertical movement. Seems awfully awkward if not impossible during normal ops.

And that's pretty much it. My money is one No. 1.