The R factor that we use in calculating Vd is multiple of ductility and over strength response factors. then it is not possible for Vd to be equal of Vy, because of over strength.
The R factor that we use in calculating Vd is multiple of ductility and over strength response factors. then it is not possible for Vd to be equal of Vy, because of over strength.
The paper from Prof. Priestley (thanks to Aria Tsam) it is really a milestone in seismic capacity design of buildings." It was recognised that a frame building would perform better under seismic acrion if it could be assured that plastic hinges would occur in beams rather than in columns (weak beam/strong column mechanism), and if the shear strength of members exceeded the shear corresponding to flexural strength."
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