I believe the tubes are considered matched. The weld is detailed as fillet on 2 sides and flare bevel groove on the other 2 sides. I have been told that only the 2 sides with fillet welds and a small dimension of the other side (2 x the thickness of the material) can be considered effective...
I am checking a welded tube steel connection with TS 6x6 vertical verendial truss members and TS 6x6 chords. They are using a fillet weld all around and are counting all four sides as effective. I have heard that some codes do not allow the full perimeter (i.e only 2 sides effective) due to...
