Seismic Steel Design 12/9/2012 nolastic Responso of EBFs Concentrically Braced Frames Type MD(Moderately Ductile)R=3.0 Type LD(Limited-Ductility)R=2.0 by Dr.Carlos E.Ventura,UBC 9」 Seismic Steel Design 12/9/2012 by Dr. Carlos E. Ventura, UBC 9 Inelastic Response of EBFs 9 December 2012 54 Concentrically Braced Frames • Type MD (Moderately Ductile) R = 3.0 • Type LD (Limited-Ductility) R = 2.0 Tension yielding (typ.) Inelastic buckling with plastic hinge (typ.)