I have a project where some field modifications are needed to an existing structure. I need to add some brackets to an HSS7x7 column. The brackets will need to be flare bevel welded and I have some pretty high demand forces. Table J2.2 of AISC 360-10 specifies effective throat thicknesses for flare bevel welds and it seems like I would only get sufficient capacity if I specify GMAW or FCAW-G welds. I am wondering if these weld types are practical/feasible for field modifications?
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