Yes. But the centerline in this design is unusable art space:
That is valuable space. I'm particular to a spiral staircase wrapped around a pneumatic elevator.
www.daytonaelevator.com/Pneumatic%20Vacuum%20Elevator%20Photo%20Gallery.ht m
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.Without freedom of speech we wouldn't know who all the idiots are. -- anonymous poster
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.tragectory: Line goes down and to the right.
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