Guidelines for Post-Earthquake Repair and Retrofit of Buildings Based on Assessment of Performance-Critical Damage (P-2335)

This resource provides guidance on identifying visual damage states for structural components in buildings after an earthquake, with a focus on reinforcement damage from cyclic loading. It explains Damage States (DS) that correspond to varying levels of structural integrity and includes tables and guidelines for evaluating the residual fatigue life of reinforcement in earthquake-damaged structures. The appendix presents a simplified method for assessing fatigue damage in reinforced concrete elements, covering calculation of strain amplitudes and cumulative fatigue damage. Recommendations for more detailed fatigue life assessments using nonlinear response history analysis are also provided.