Pr | Required strength of the stability beam bracing at the plastic hinge location |
Ry | Ratio of the expected yield stress to the specified minimum yield stress |
Fy | Specified minimum yield stress |
Z | Effective plastic section modulus of a section (or a connection) at the plastic hinge location |
αs | LRFD-ASD force level adjustment factor = 1.0 for LRFD and 1.5 for ASD |
ho | Distance between the flange centroid |