Problems encountered in tunneling under compressed air on section of subway which passes under La Salle Street Railroad Station; in order to counterbalance settlement of building columns, they were supported by jacks so that settlement even of 20 in. could be overcome without damage to structure.
Chicago extends subway under La Salle street station
Civ Eng (NY)
Civil Engineering (New York) ; 20 , n 11
1950
3 pages
Article (Journal)
English
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