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Re: Tuscarora Almanac for August 1

Posted by W.B. on Sat Aug 1 12:36:53 2020, in response to Tuscarora Almanac for August 1, posted by IRTRedbirdR33 on Sat Aug 1 09:05:38 2020.

I seem to remember reading from various schematics and contract drawings, and measuring from the concrete covering of the various rings that put such "tubes" together, that the diameter of the BMT tunnels such as Whitehall and 60th Street were about 3 inches narrower than the IND tunnels built starting a decade later (in other words, 15' 6" in BMT tunnels vs. 15' 9" in IND tunnels). It was such that in the tunnels, the distance between track gauge and third rail center was 27.5", as opposed to the 27.5625" distance customary on most sections of what is officially known today as the B Division.


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