A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Initial system will consist of 7.7 route-miles of double-tube subway; divided into two lines; there are two types of tunnel, one of horseshoe section and other of circular section; former is advanced by conventional earth tunneling, while latter requires use of shields of kind standard for subaqueous boring; illustrated description of methods and equipment used in excavation, tunnel driving and concrete lining, etc; estimated cost of project $ 46,000,000.
Initial system will consist of 7.7 route-miles of double-tube subway; divided into two lines; there are two types of tunnel, one of horseshoe section and other of circular section; former is advanced by conventional earth tunneling, while latter requires use of shields of kind standard for subaqueous boring; illustrated description of methods and equipment used in excavation, tunnel driving and concrete lining, etc; estimated cost of project $ 46,000,000.
Chicago builds subway
Compressed Air Mag
Vivian, C.H. (author)
1940
9 pages
Article (Journal)
English
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