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COLD FORMED RHS TO RHS WITH THE SAME WIDTH

COLD FORMED RHS TO RHS WITH THE SAME WIDTH

COLD FORMED RHS TO RHS WITH THE SAME WIDTH

(OP)
I have a connection with RHS welded to RHC section with same width, my reference for the welding calculation was AISC specs chapter K (I calculated Le and Sip And sop ), and found the required throat.

i was going to weld the RHS all around and only take the effective lengths as indicated in chapter K procedure and if the spacing between the walls at the edges provided the required throat i would go with it.

But my supervisor didn't approve this concept because he said that this concept is only accepted when dealing with hot rolled sections.

now my question is : if i couldnt use this procedure, what should i do in this case , assuming that i cant weld on the fillet of the RHS as my supervisor suggested will leave me only with two sides to weld.

So LETS DISCUSS THIS PEOPLE :D .



“If you don't build your dream someone will hire you to help build theirs.”

Tony A. Gaskins Jr.

RE: COLD FORMED RHS TO RHS WITH THE SAME WIDTH

Let's. What kind of forces are you transferring through the connection? Moment?

The greatest trick that bond stress ever pulled was convincing the world it didn't exist.

RE: COLD FORMED RHS TO RHS WITH THE SAME WIDTH

Develop the connection relying only on the linear lengths of weld, and don't worry about the heat affecting the cold worked areas. The cold working strength can be affected, however I doubt it is a concern in your case. Welding of CFS is done all the time.

If in doubt, contact your local light gauge steel association and they will very likely be more than happy to help.

RE: COLD FORMED RHS TO RHS WITH THE SAME WIDTH

Why not follow Chapter E of the AISI Code?

DaveAtkins

RE: COLD FORMED RHS TO RHS WITH THE SAME WIDTH

What size HSS members are you referring to? HSS sections commonly used in building construction, and controlled by the AISC Specification, are cold-formed. Unless you're using members with very thin walls, your supervisor's concern is misplaced.

RE: COLD FORMED RHS TO RHS WITH THE SAME WIDTH

Some are hot rolled and some are cold rolled, but this information is not carried on the documentation.

I would point out that wide flanges are cold rolled after hot rolling to true up the section.

Michael.
"Science adjusts its views based on what's observed. Faith is the denial of observation so that belief can be preserved." ~ Tim Minchin

RE: COLD FORMED RHS TO RHS WITH THE SAME WIDTH

(OP)
Thank you guys. :)

KootK : I have Axial , M2 , M3 , shear on the connection.

and DaveAtkins : Can you please be more specific ?? What publication of AISI are you talking about??



“If you don't build your dream someone will hire you to help build theirs.”

Tony A. Gaskins Jr.

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