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Built up cruciform column Weld

Built up cruciform column Weld

Built up cruciform column Weld

(OP)
thread726-254963: built up column weld

I am trying to use a cruciform column for a 12 story SMF structure. all of the flanges and webs of the section are built of plates and no I-beams are used. I have uploaded a picture of the section.

my problem is: How to calculate the fillet weld's dimension for welding different parts of the section together ???

I would appreciate any help.
 

RE: Built up cruciform column Weld

What software do we use to view a wmf file?

Michael.
Timing has a lot to do with the outcome of a rain dance.

RE: Built up cruciform column Weld

If the section is strictly axial (compression or tension) no design is neccessary, simply provide the minimum size required per AISC/AWS based on material thickness.  If the section has flexure the shear flow formula VQ/nI can be used.  Blodgett's book page 3.2-17 through 3.2-29 provides a good example to follow.  Final weld sizing is performed on page 3.2-29.

RE: Built up cruciform column Weld

(OP)
StrPE, Tanx alot!!!

That is right! the section is under flexural stress, so i used the shear flow formula; with different Q for flange weld and web weld.

tanx again.

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