atc usa japan improving earthquake resiliency in ... · seismic strengthening guidelines • volume...
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Improving Earthquake Resiliency in Developing
Cities
Dr. Hideki Kit Miyamoto, S.E.
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The World Bank Project in Manila
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Typical Building Construction
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Typical School
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Seismic Risk Identification and Prioritization
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Seismic hazard
Building vulnerability
Exposure data
Risk Identification of Buildings
Impact EvaluationImpact
Evaluation
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Prior Studies
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Metro Manila Existing SchoolsBuilding Damage Index
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Metro Manila Existing SchoolsProjected Fatalities per Building
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25% of fatalities (6385) in 5% of buildings (186)
80% of fatalities (19330) in 40% of buildings (1466)
3,821 Buildings 24,400 Fatalities (of 2.15 million)
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Cost Analysis
Buildings StrengtheningCost
StudentLives
Worst 5% (190) $40 ‐ 80M 25% (6,380)
Worst 40% (1500) $180‐360M 80%(19,330)
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Implementation
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Seismic Strengthening Guidelines
• Volume I – Simplified methodology for evaluation and
strengthening: Based on the National Code (NSCP) and FEMA 356/ASCE 41
• Volume II – Atypical buildings, PBD
• Volume III – Design examples for typical school buildings
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Shear wall retrofit
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BRBF or Viscous Damper retrofit
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Key Findings • Cities can systematically retrofit certain
structures and greatly reduce the number of fatalities
• Seismic risk management in developing cities is critical and feasible.
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