> In regard to anchors embedded in concrete ACI 318 App D regarding
> Brittle and Ductile steel elements
> Is it correct to assume if the Fu of the bolt is 65ksi or less then
> it is Ductile and over 65ksi is Brittle ??
No. You really need to know more about the material characteristics.
I don't know what the Code says maybe they have their own definition
of ductile and brittle, but UTS alone doesn't determine brittle
behavior. In carbon steels brittle behavior is strongly temperature
dependent, but that depends on processing variables. Carbon and
manganese content also have a strong effect. Carbon content over
0.45% makes for more brittle behavior as does manganese content below
about 0.60%. Quenched and tempered steel is more brittle than
annealed material of the same chemistry. It's not a topic with a few
quick rules of thumb.
Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw@skypoint.com | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania
1864)
http://www.skypoint.com/~chrisw/
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