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Old Posted Feb 21, 2023, 11:31 PM
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WrightCONCEPT WrightCONCEPT is offline
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Location: Long Beach
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Quote:
Originally Posted by Busy Bee View Post
As far as modern bored tunnel subway in NYC goes the mined station box actually has to be 1000' due to the need for double crossovers at each end. These diamond crossovers are actually within the station excavation not a separate tunneled connection further down the running tunnels. Obviously they have determined this is the most cost effective way of doing it so expect any and all future station boxes to remain 1000' minimum length. Whether enormous full length mezzanines are really needed is up for debate.
That's a great point because they are digging out the boxes anyways why not extract as much useful operational space as they can. There with SAS they made the right choice.
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