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Re: QUERY: How do you determine fpy?[Subject Prev][Subject Next][Thread Prev][Thread Next]
- To: seaoc(--nospam--at)seaoc.org
- Subject: Re: QUERY: How do you determine fpy?
- From: "NIGEL MENDS, P.E." <U5938(--nospam--at)sandy.mdt.mt.gov>
- Date: Sat, 6 Jan 1996 13:58:44 -0700 (MST)
- Cc: U5938(--nospam--at)sandy.mdt.mt.gov
You Said: > In article <Chameleon.960105165135.nmends(--nospam--at)nmends.lewis.mt.net>, you wrote: > >fpu is a quantity that you would need to get from the 'as-built' drawings or specifications for the > >structure. It's a characteristic of the steel used in the prestressing. > > Yes, I've got the fpu value. It's fpy that I am confused about! Oops! Danged fingers are always slipping:-) FWIW, AASHTO gives the following factors to multiply the ultimate strength of the prestressing steel by to get the yield strength of the prestressing steel: for low-relaxation strand or wire: 0.90 for stress-relieved wire or strand: 0.85 for Type I (smooth) high-strength bar: 0.85 for Type II (deformed) high-strength bar: 0.80 Nigel
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