Mike,
The slots.
When I do a bunk bed staging I usually hinge the top deck for access like this:
This permits physical and visual access. However this time I am going to use a fixed top deck with observation slots between the supports for visual access only.
Because the lower tracks are so open and accessible I do not feel the need to have a hinged deck. Here is a shot of the lower deck uncovered:
This is an off stage work room with hidden turntables serving three different branch line ends.
As far as a track plan goes, well, er, I have changed it so much that posting it would only be misleading. This is a tee shaped 2k sq ft basement with an interchange yard serving five branch lines mounted off the wall. Lots of of track, 87 turnouts, five turntables, 9 CM-20 powerpacks, three Dallee power packs and ten Z-1000 AC packs with 9 panels. 90% benchwork done, 80% of track down, several panels need built. A maze of wires run and more to go. Should have gone R/C battery.
An early shot before changes:
The long arch bridges are now in the far back at top of photo below:
