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Table 1 Overall damage index description

From: A new method to assess damage to RCMRFs from period elongation and Park–Ang damage index using IDA

Descriptive damage state Damage index quantity State of building operability Physical state
Collapse More than 1.0 Loss of building Partial or total collapse of building
Severe Between 0.4–1.0 Not repairable Extensive crashing of concrete; disclosure of buckled reinforcement
Moderate Less than 0.4 Repairable Extensive large cracks; spall of concrete in weaker elements
Minor Minor cracks; partial crushing of concrete in columns
Slight Sporadic occurrence of cracking