This is looking length-ways from the middle down the main passage. It's a two gravity lift system that operates like a train and stops you at each location, you walk three blocks and continue the journey or turn and get off at your stop. The vertical tubes on the right are for the vertical lift. The tubes across the picture...
go from the main middle dock on the left
...across to the central transporter and main control room on the right.... Oh yeah did I mention it's completely modular? You can chop any quarter out of a section and or move all the individual sections around without having to break logic... the tube sections around the walkways can also be cut copied in any direction...
It's almost* fault free!
