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Seattle International District Earthquake Risks


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Seattle's International District is one of the most interesting and historic parts of town, it also faces some of the largest risks during an earthquake.

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Seattle International District Earthquake Risks

  1. 1. International District: Earthquake Risk June 2, 2008
  2. 2. Thank You <ul><li>Carol Dunn </li></ul><ul><li>Emergency Services Department </li></ul><ul><li>Community Disaster Education </li></ul><ul><li>American Red Cross </li></ul>
  3. 3. Goals <ul><li>Learn About the Earthquake Risk to Our Area </li></ul><ul><li>Factors that Influence Outcome: </li></ul><ul><ul><li>Ground Composition </li></ul></ul><ul><ul><li>Building Construction </li></ul></ul><ul><ul><li>Decisions and Preparation </li></ul></ul>
  4. 4. The Earth is Like a Lava Lamp
  5. 5. Hot Cold
  6. 8. Faults Pressure Created Crumples in the Crust That are Weakness—as pressure builds, The Crumples are the easiest places to Release Pressure Builds and Creates Faults— Areas in the ground that crumpled and bent Once crumpled, the creases (faults) are where the ground is most likely to move again when pressure builds up enough.
  7. 9. Here’s where we know the earth has crumpled and creased in the Seattle area. There are also faults deep under ground that we can’t see.
  8. 10. The ground we walk on <ul><li>Soil Types </li></ul><ul><ul><li>Rock </li></ul></ul><ul><ul><li>Rock/Water/etc </li></ul></ul>
  9. 11. <ul><li>A lot of soil in Seattle is more similar to red dean pudding than rock—and when shaken, can act more like water that stone </li></ul>
  10. 12. Seattle pre-1889
  11. 13. Uninformed Decisions in 1889
  12. 14. Saw Dust Fill
  13. 15. Liquefaction Maps
  14. 16. <ul><li>The stories and histories that have grown with the International District are the stories of overcoming challenges, finding ways to support each other and creating and building lasting legacies </li></ul>
  15. 17. Hard earned success led to the demand for impressive buildings
  16. 18. Everyone was building bigger, Building stronger
  17. 19. Unfortunately: almost the worst building type for earthquake resistance 大丈夫能屈能伸 For Earthquakes: Buildings are like people—flexible is better
  18. 20. Best: low, wood --Bolted to Foundation
  19. 21. OK: Steel and reinforced concrete:
  20. 22. Bad for Quakes: Soft Structures
  21. 24. Worst for earthquakes Worst: Un-reinforced brick (recognized by levels of brick ends) Not very good: reinforced bricks (recognized when all bricks show their sides) Not very good: Retrofitted masonry (recognized by the added bolts) 5 out of 6 were damaged during the 2001 Nisqually Quake
  22. 25. Unreinforced Masonry
  23. 26. Options <ul><li>Retrofit </li></ul><ul><ul><li>Anchor masonry to wood </li></ul></ul><ul><ul><li>Add Framing </li></ul></ul><ul><ul><ul><li>Still will be risks </li></ul></ul></ul><ul><li>Rebuild </li></ul><ul><ul><li>Create a new safer building </li></ul></ul><ul><ul><ul><li>Lose character and feeling of history </li></ul></ul></ul><ul><li>Relocate </li></ul><ul><ul><li>Currently located in one of the most dangerous parts of the city </li></ul></ul><ul><ul><ul><li>Lose character and history </li></ul></ul></ul>
  24. 27. On line Data Sources
  25. 28. Buildings that received funding for retrofitting in 2001 <ul><li>Historic Seattle Save the Buildings Fund </li></ul><ul><ul><li>Milwaukee and Alps Hotels </li></ul></ul><ul><ul><li>Hong Kong Building </li></ul></ul><ul><ul><li>Hip Sing Building </li></ul></ul><ul><ul><li>The Bing Kung Building </li></ul></ul><ul><ul><li>The Bush Hotel </li></ul></ul>
  26. 29. Because of Jolt Be Sure to Bolt
  27. 30. <ul><li>Know what to expect— </li></ul><ul><li>Do not run outside! </li></ul>
  28. 32. Be prepared for disruption
  29. 33. Stay Healthy 1 gallon per person per day for a min 3 days
  30. 34. Best: Non Perishable No need for heating Limited water
  31. 35. Stay healthy
  32. 36. Brrrrrr Maintain the right Body temperature
  33. 37. Information Important Documents
  34. 38. Get through debris
  35. 39. Coping <ul><ul><li>Be aware that unusual events cause unusual and intense emotions </li></ul></ul><ul><ul><li>Talk about your feelings </li></ul></ul><ul><ul><li>Include Comfort Items in your supplies </li></ul></ul>
  36. 40. Have a back up care plan
  37. 41. Not just for people
  38. 42. The challenges of family care providers are greater than almost any other group in our community- We need to help make connections
  39. 43. The ability to communicate is crucial Calls to another area may work when local calls don’t. Agree on an out of area contact. Text messaging may work Talking with her Out of area contact
  40. 44. 9-1-1 <ul><li>9-1-1 calls from pay phones are free. </li></ul><ul><ul><li>May be overwhelmed in a disaster </li></ul></ul><ul><li>Over 100 Languages: </li></ul><ul><ul><li>“ Fire, Mandarin/Cantonese/etc” </li></ul></ul><ul><ul><li>“ Police, Mandarin/Cantonese/etc” </li></ul></ul><ul><ul><li>Medical, Mandarin/Cantonese/etc” </li></ul></ul><ul><li>Stay on the line! </li></ul>
  41. 45. <ul><li>211—Language Support </li></ul><ul><li>American Red Cross: </li></ul><ul><li>206-323-2345 </li></ul>Information
  42. 46. AM 710 AM 1000 TV: 7 In English Puget Sound Area
  43. 47. Thank You <ul><li>For more information contact: </li></ul><ul><li>Carol Dunn </li></ul><ul><li>The American Red Cross </li></ul><ul><li>Community Disaster Education Department </li></ul><ul><li>[email_address] </li></ul><ul><li>206.709.4528 </li></ul><ul><li>Language Bank: 206-323-2345 </li></ul>