In order to achieve the post buckling strength of BRB member. AISC seismic design provisionsrequire that gusset plate axial capacity exceed ultimate compressive load of the BRB. The AISC code alsorequires that the gusset plate instability be considered because recent full scale tests demonstrated that outof plane buckling of a gusset plate occurs prior to BRB ultimate load. In this pa... https://www.chiggate.com/shades-eq-bonder-inside-04nch-dark-chocolate-hot-on-sale/