Thread: CHICAGO | Millie on Michigan/CitizenM (300 N Michigan Ave) | 523 ft | 47 FLOORS
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  #201  
Old Posted Jan 16, 2021, 9:19 PM
BrinChi BrinChi is offline
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Join Date: Jun 2013
Location: Chicago, IL
Posts: 450
Wow! I did not think that would be reinforced concrete! Anyone know if this is just cheaper or actually stronger than steel columns?