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Re: Prestressing strands 1958...

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David Fisher wrote:



What was the typical Fy for prestessing strands in 1958?

We’re doing some work at O’Hare and have the drawings, but they lack a lot of info.


Like Fy, for example.




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For prelim. info, I'd use fy = 250 ksi, but I would definitely try to get a sample of the strand and get it tested before I'd rely on ANY value for "real design work."