BioMax
+1y
That is a tough one to answer. A round bar is not a stiff as a square bar of the same size and wall thickness (for example 1 1/2 round v.s 1 1/2 square) but the square bar will weigh aprox 30% more than the round bar. So I would either step up the size of the round bar or run a lower gusset, just be be safe. I personally don't like over built, so I would use 1 1/2 x .120 and run a nice bottom gusset.