=+40. The collapse of reinforced concrete buildings during earthquakes can result in significant loss of property and life. Often such collapses are caused by concrete column axial failure. The authors of

“Rotation-Based Shear Failure Model for Lightly Confined RC Columns” (J. Struct. Engr., 2012:

1267–1278) introduced a model for the deformation at onset of shear failure for a class of reinforced concrete columns. As part of the study, the authors investigated how y5maximum sustained