The Role of Building Codes in Delivering Seismic Performance John Hooper Director of Earthquake Engineering Magnusson Klemencic Associates.

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Presentation transcript:

The Role of Building Codes in Delivering Seismic Performance John Hooper Director of Earthquake Engineering Magnusson Klemencic Associates

Over 220,000 fatalities Over 300,000 homes damage/destroyed Over 1.5 M people affected No Building Codes M W 7.0

M W 8.8 Under 500 fatalities Displaced population: 800,000 Estimated damage: $30B US Building Codes Similar to US

Performance of Chilean Buildings Post 1985 Buildings that collapsed: 4 (approximately) Buildings to be demolished: 50 (estimated) Number of buildings 3+ stories: 9,974 Number of buildings 9+ stories: 1,939 Failures of 3+ stories: 0.5% Failures of 9+ stories: 2.8%

Life Safety Performance

Seismic Design Codes – based on USGS National Seismic Hazard Map

Summary Building Codes (and their enforcement) make a difference Continued Code updates are essential Analysis Physical Research Earthquake Reconnaissance Is Life Safety Performance adequate?