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Old Posted Jul 19, 2008, 2:56 AM
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ardecila ardecila is offline
TL;DR
 
Join Date: Jun 2006
Location: the city o'wind
Posts: 15,854
Quote:
Originally Posted by the urban politician View Post
^ I know, ridiculous.

I wonder how much it must have cost to build tunnels in 1900, when much of the subway system was built.
Construction costs were lower in 1900-1930, because of
a) cheap, non-union and non-mechanized, immigrant labor
b) shallow cut-and-cover construction (remove street, dig, lay tracks, rebuild street over the top)
c) less utilities under the streets
c) domestic building materials
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