Establishing reliable acceptance criteria for deformations in structural members is crucial for the successful use of performance-based methods in the design and evaluation of structures. This paper explores extending the applicability of expressions proposed for the ultimate compressive strain in the concrete and for the plastic hinge length of reinforced concrete beams to those for reinforced concrete columns. The limiting concrete strain was evaluated based on a consistent definition for limiting drift of 153 reinforced concrete column tests, and compared with the values obtained using the previously proposed expressions. An optimized equation for limiting compressive strain was developed. This equation indicates a base level of strain in the extreme compression fiber of the concrete of 1% for the column failure criterion used in the evaluation.
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