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LOMA PRIETA, CA EARTHQUAKE

LOMA PRIETA, CA EARTHQUAKE. Dr. Walter Hays, Global Alliance For Disaster Reduction . OCTOBER 17, 1989. LOMA PRIETA, CALIFORNIA EARTHQUAKE. 5:04 PM ON OCTOBER 17, 1989 M 7.1 62 DEATHS $1 BILLION INSURED LOSS FRAGILE INFRASTRUCTURE EXPOSED. LOMA PRIETA EARTHQUAKE. 62 DEATHS

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LOMA PRIETA, CA EARTHQUAKE

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  1. LOMA PRIETA, CA EARTHQUAKE Dr. Walter Hays, Global Alliance For Disaster Reduction OCTOBER 17, 1989

  2. LOMA PRIETA, CALIFORNIA EARTHQUAKE 5:04 PM ON OCTOBER 17, 1989 M 7.1 62 DEATHS $1 BILLION INSURED LOSS FRAGILE INFRASTRUCTURE EXPOSED

  3. LOMA PRIETA EARTHQUAKE • 62 DEATHS • 3,757 INJURIES • 8,000 HOMELESS • $5.6 BILLION PROPERTYDAMAGE • LIFELINE FLAWS

  4. LOMA PRIETA EARTHQUAKE • 1,300 BUILDINGS DESTROYED • 20,000 BUILDINGS DAMAGED • 3,500 BUSINESSESDAMAGED • $1.8 BILLION LOSS TO TRANS-PORTATION

  5. CA: HIGH SEISMICITY

  6. CALIFORNIA’S FAULTS (SOURCE: CDMG)

  7. USGS’S 1988 FORCAST OF EARTHQUAKE PROBABITIES

  8. WEST NORTH Schematic Diagram of the Earthquake Mechanism

  9. WEST NORTH Schematic Diagram of the Earthquake Mechanism, But Without Surface Rupture

  10. GROUND FAILURE, NOT SURFACE FAULT RUPTURE

  11. POWER OUTAGES BEGAN AT 5:04 PM IN THE REGION

  12. FIRE IN MARINA DISTRICT 100 KM FROM EPICENTER

  13. LIQUEFACTION: MARINA DISTRICT

  14. VULNERABLE SOFT-STORY BUILDINGS: MARINA DISTRICT

  15. LATERAL SPREADING: SAN FRANCISCO WHARF AREA

  16. VULNERABLE UNREINFORCED MASONRY BUILDINGS

  17. VULNERABLE UNREINFORCED MASONRY BUILDINGS

  18. COLLAPSE OF ELEVATED CYPRESS VIADUCT

  19. FORTY-ONE VICTIMS AT THE CYPRESS VIADUCT

  20. FAILURE OF A SPAN ON THE OAKLAND BAY BRIDGE

  21. WIDESPREAD POWER OUTAGES

  22. POLITICAL SOLUTIONS CA GOVERNOR DEUKMEJIAN’S BOARD OF INQUIRY GOAL: TO FIND THE COMMON AGENDA (CA) OF TECHNICAL AND POLITICAL SOLUTIONS TECHNICAL SOLUTIONS

  23. THE BOARD’S REPORT:“COMPETING AGAINST TIME” QUESTION 1: WHY DID THE CYPRESS VIADUCT ON INTERSTATE 880 AND THE OAKLAND BAY BRIDGE SPAN FAIL? GOVERNOR DEUKMEJIAN’S BOARD OF INQUIRY

  24. THE BOARD’S REPORT: “COMPETING AGAINST TIME” QUESTION 2: COULD THESE FAILURES HAVE BEEN FORESEEN? GOVERNOR DEUKMEJIAN’S BOARD OF INQUIRY

  25. THE BOARD’S REPORT:“COMPETING AGAINST TIME” QUESTION 3: CAN WE IMPROVE OUR ABILITY TO PREDICT ACCURATELY FUTURE BRIDGE FAILURES? GOVERNOR DEUKMEJIAN’S BOARD OF INQUIRY

  26. THE BOARD’S REPORT:“COMPETING AGAINST TIME” QUESTION 4: IS THE SCHEDULE FOR AND MANNER OF RETROFITTING CA’S BRIDGE STRUCTURES APPROPRIATE IN TERMS OF THE STATE-OF-ART? GOVERNOR DEUKMEJIAN’S BOARD OF INQUIRY

  27. THE BOARD’S REPORT:“COMPETING AGAINST TIME” QUESTION 5: SHOULD CA MODIFY EXISTING CONSTRUCTION AND RETROFIT PROGRAMS FOR BRIDGE STRUCTURES? GOVERNOR DEUKMEJIAN’S BOARD OF INQUIRY

  28. THE BOARD’S REPORT:“COMPETING AGAINST TIME” QUESTION 6: ARE CA’S FREEWAY SYSTEMS SAFE FROM FUTURE EARTHQUAKES? GOVERNOR DEUKMEJIAN’S BOARD OF INQUIRY

  29. POLITICAL SOLUTIONS CA STAPLE FACTORS S P O T GOVERNOR DEUKMAJIAN’S BOARD OF INQUIRY FACT: THE COMMON AGENDA WAS BASED ON THE STRICKEN COMMUNITY’S STAPLE FACTORS TECHNICAL SOLUTIONS

  30. THE STAPLE FACTORS ALWAYS VARY WITH • TIME • PLACE • CIRCUMSTANCES

  31. 1.AFFIRM THE POLICY THAT SEISMIC SAFETY IS A PRIMARY CONCERN FOR ALL TRANSPORTATION SYSTEMS 2.ESTABLISH THE POLICY THAT SEISMIC SAFETY IS A PRIORITY FOR ALL PUBLIC AND PRIVATE BUILDINGS BOARD’S RECOMMENDATIONS: INTEGRATED POLITICAL AND TECHNICAL SOLUTIONS

  32. 3.ESTABLISH A MECHANISM TO ADVISE THE GOVERNOR AND LEGISLATURE ON THE ACTIONS OF CA’S AGENCIES TO ACHIEVE SEISMIC SAFETY 4.PREPARE A PLAN TO MEET THE GOVERNOR’S GOALS FOR THE SEISMIC SAFETY OF CA’S TRANSPORTATION SYSTEMS BOARD’S RECOMMENDATIONS: INTEGRATED POLITICAL AND TECHNICAL SOLUTIONS

  33. 5.FORM A PERMANENT EARTHQUAKE ADVISORY BOARD TO ADVISE CALTRANS ON POLICY, STANDARDS, AND PRACTICE 6.ENSURE THAT CALTRAN’S SEISMIC DESIGN POLICIES AND CONSTRUCTION PRACTICES MEET THE POLICIES AND GOALS SET BY THE GOVERNOR BOARD’S RECOMMENDATIONS: INTEGRATED POLITICAL AND TECHNICAL SOLUTIONS

  34. 7.TAKE SPECIFIC ACTIONS TO REDUCE VULNERABILITIES OF NEW AND EXISTING TRANSPORTATION SYSTEMS 8.INVOLVE ALL TRANSPORTATION AGENCIES AND DISTRICTS--RAIL, HIGHWAY, AIRPORTS, PORTS, AND HARBORS---IN THE SOLUTION BOARD’S RECOMMENDATIONS: INTEGRATED POLITICAL AND TECHNICAL SOLUTIONS

  35. State of California (1990), Competing Against Time, Report of Governor Deukmejian’s Board of Inquiry on the Loma Prieta Earthquake Office of Planning and Research, New Highlands, California, 264 p.

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