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Re: Welding HSS

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Correct me if I am wrong but would not the horizontal shear stress be a maximum at section mid-depth? 

 due hear force that is required to make the upper & lower "chunks" in fact act as a single member?

This is a BTDT situation for me.....IMO unless there are some other reasons to do this, the effort to get this to work and potential  headaches downstream out weigh the benefits.

Consider a new member


On 1/22/07, Tom.Hunt(--nospam--at) <Tom.Hunt(--nospam--at)> wrote:


If I understand the layout here, you would be calling out a Flare-V Groove weld on each side which is certainly doable but would require a welding procedure (WPS) that is qualified by testing since I do not believe none are prequalified.  If this is a beam, the horizontal shear stresses should be low at the mid point so that should not be much of a problem.

Thomas Hunt, S.E.

"M. David Finley, P.E., P.A." <davidfinley(--nospam--at)>
01/22/2007 08:13 AM
Please respond to seaint
"Seaint(--nospam--at)Seaint.Org" < seaint(--nospam--at)>

Welding HSS

How well can two square HSS be welded side-by-side?  For example, can two 6x4 tubes be welded with longitudinal welds to create an overall 6x8 tube?  How detrimental are the rounded edges in this situation?

David Finley
M. David Finley, P.E., P.A.
2086 SW Main Boulevard - Suite 111
Lake City, FL  32025


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