Gusset plate and column assembly for moment resisting bi-axial beam-to-column joint connections

A gusset plate assembly for use in connecting at least two beams to a hollow tubular column in a building, the gusset plate assembly configured to receive said at least two beams in a biaxial orientation of said beams, the gusset plate assembly comprising gusset plates sized for transferring the weights of said at least two beams and the reaction forces and bending moments of the at least two beams to the hollow tubular column, at least a first of the gusset plates being configured to receive a portion of a second of the gusset plates therein, and a joint penetration groove weld joining the first and second gusset plates together, the joint penetration groove weld being disposed on an exterior surface of the first and second gusset plates, the joint penetration groove weld having a length comprising a partial joint penetration groove weld with a reinforcing fillet weld extending part of the length of the joint penetration weld and a fillet weld extending another part of the length of the joint penetration groove weld.