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Over 220,000 fatalities Over 300,000 homes damage/destroyed Over 1.5 M people affected

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. Under 500 fatalities

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Over 220,000 fatalities Over 300,000 homes damage/destroyed Over 1.5 M people affected

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  1. The Role of Building Codes in Delivering Seismic PerformanceJohn HooperDirector of Earthquake EngineeringMagnusson Klemencic Associates

  2. Over 220,000 fatalities • Over 300,000 homes damage/destroyed • Over 1.5 M people affected • No Building Codes MW 7.0

  3. Under 500 fatalities • Displaced population: 800,000 • Estimated damage: $30B US • Building Codes Similar to US MW 8.8

  4. 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%

  5. Life Safety Performance

  6. Life Safety Performance

  7. Seismic Design Codes – based on USGS National Seismic Hazard Map

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

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