Hi I am trying to design a brace column connection with a base plate. I am using the smart gusset plate option to design in RAM connection. The frame was imported from a design that was completed in RAM frame. I am using a W 10x33 for my column and if I set the base plate dimension to 16"x16" the design is being reported as inadequate and it cites section DG1 B.4.1 and it requires the dimension to 15.73"x26.22". I checked the code and it requires the 15.73x13.96 (bf +2*3). Am I missing something here? Is there an actual bug in the code?
I take it the gusset plate frames into the column web here. If so, then it's the Nmin dimension that is coming out larger. It's using
Nmin = drigid + 2/*3 ,
where drigid is affected by the LH (length over plate) dimension of the gusset. I can get your results only when the LH is very small.
Right, and if there is no gusset plate welded to the base plate, then that's what we come up with, but when there is a gusset plate it's something like this: