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FW: LRFD, ASD, and USD

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Well, yes, for f(y) less than 40 ksi, which it would be in the service load 
range.  E (slope of the stress-strain curve in the linear elastic range) is 
the same for both Grade 40 and Grade 60.

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

Pavel Kravets wrote:

. > This statement means that Grade 40 nad 60 have same stress-strain curve
. > ?????
. > 
. > Pavel Kravets
. >