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Re: Acceptable Level of Overstress

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Jason Kilgore wrote:

. > First, how old is this wood beam, and are you using the correct allowable
. > stresses?  Older wood generally had higher allowable stresses, because
. > stronger wood was more common (modern wood is grown as fast as possible to
. > generate more revenue and is "weaker").

Where does all this dangerous misinformation come from?

Can anyone cite where in the Full-Size, In-Grade testing program that they 
said that they used only "new-growth" wood?

Can anyone cite where "new-growth" and "old-growth" are defined?

A. Roger Turk, P.E.(Structural)
Tucson, Arizona

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