I designed a track plan proposal for a club in 1500 sq ft that
included a hidden three level stage/elongated helix that would
have provided 700-1000 linear ft of level staging (18-24 long
trains) -- but the staging operator would have had a 36" duck
under. So they voted a plan with NO staging at all and a yard
that is about 70" high off the floor. Go figure. Anticipating
the sheer joy of operating such a layout, I quietly resigned.

Tim O'Connor