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RE: Steel Upset Rod

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Makes sense. I guess I should be a little more careful using
"typically". Thanks.

> -----Original Message-----
> From: Christopher Wright [mailto:chrisw(--nospam--at)skypoint.com]
> Sent: Tuesday, October 15, 2002 1:16 PM
> To: SEAOC Newsletter
> Subject: RE: Steel Upset Rod
> 
> >upset rods are
> >typically used to move the yielding from the shorter threaded portion
of
> >the rod to the longer rod shank.
> Upsetting provides a relatively lower stress at the end of the threads
> which is a major stress concentration. The first fully engaged thread
> transfers a larger portion of the load; consequently most fatigue
> failures in bolts occur at the first thread. The upset end puts the
first
> engaged thread in a larger diameter and replaces the re-entrant corner
in
> the rod shank with a fillet.
> 
> Christopher Wright P.E.    |"They couldn't hit an elephant at
> chrisw(--nospam--at)skypoint.com        | this distance"   (last words of Gen.
> ___________________________| John Sedgwick, Spotsylvania 1864)
> http://www.skypoint.com/~chrisw
> 
> 
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