Question regarding prequalified SMF Reduced Beam Section connection design:
According to AISC Seismic Provisions Section 9.6, in the equation for Mpb for prequalified RBS, it includes 1.1Ry*Fyb*Zrbs, however, in the AISC 358 Section 5.4, it directs you to EQ 5.8-5 where Mpr = Cpr*Ry*Fy*Ze.
Why...