Structural engineers often focus on strength and stiffness to judge the suitability of a design. Additional concerns are emerging, including repairability and sustainability. An event that highlighted the importance of considering damage and repairability was the 1994 Northridge Earthquake near Los Angeles. Structures designed “to code” provided life safety but the economic losses were excessive, making it one of the costliest natural disasters in US history. Predicting damage and ensuring repairability are now important concerns in earthquake-prone regions. When we make such considerations for one building we call it performance-based engineering; when we consider the recovery of an entire community we talk about resilience.

Performance-based Engineering
Damage Indices
Fragility Functions
Visual Damage
Demolition Decisions
Repair Actions
Recovery Models