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Re: HSS moment connections

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On Aug 24, 2005, at 12:26 PM, Ed Tornberg wrote:

The contractor wants to keep the ends square, butt them, cap the open end, and call it good.  Is that okay?  I suppose if the welds are still accomplished properly it would work.  In fact, the inside corner might be easier this way.

With mitre joints you get a big stress right at the corners where the flange loads, acting normal to each other resolve themselves. The weld isn't the best place to pick this stress up particularly because the welds are made from one side, and the root tends to have a poor contour. The contractor may be right, except that joining two identical sizes of tubing ar tight angles isn't the best detail either. You might want to look at this fairly carefully

Christopher Wright P.E. |"They couldn't hit an elephant at
chrisw(--nospam--at)   | this distance" (last words of Gen.
.......................................| John Sedgwick, Spotsylvania 1864)

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