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| Re: The reason NYC stopped building subways (1537596) | |||
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Re: The reason NYC stopped building subways |
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Posted by Steve B-8AVEXP on Sat Feb 8 08:05:08 2020, in response to Re: The reason NYC stopped building subways, posted by Stephen Bauman on Sat Feb 8 07:51:13 2020. What's the safety factor of the VZB? I remember back in 1987, when the Golden Gate Bridge celebrated its 50th anniversary, so many pedestrians took to walking across it that the main span actually flattened out. Engineers calculated that there was no concern. |
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