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Pretension of material other than A325 or A490

Pretension of material other than A325 or A490

Pretension of material other than A325 or A490

(OP)
I wanted to know if anyone knows of a formula or the values one would use for pretension in A307 bolt or C1018 threaded rod.

Thanks
Mark Alexander

RE: Pretension of material other than A325 or A490

I would assume you could use 75 percent
of the ultimate yield strength regardless
of the material if that is your normal
guideline.

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