FL Bridge Collapse - Page 10 - General Discussion - Contractor Talk

FL Bridge Collapse

 
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Old 06-03-2018, 01:26 PM   #181
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Re: FL Bridge Collapse


Her is a link to some circa 1937 patents by Ulrich Finsterwalde ( Nazi Germany) on concrete truss design. In it, he talks about how the node areas don't work well in concrete....not nearly as well as steel. One of the most striking things that I see, is that he isolated the truss webs from the nodes. They came together at 90 deg abutments.
Many modern concrete designs go out of their way to control how and where concrete cracks. The FIU bridge didn't seem to do that in the truss structure.

https://patents.google.com/patent/US2151267A/en

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