Seattle International District Earthquake Risks
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Transcript of Seattle International District Earthquake Risks
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International District:Earthquake Risk
June 2, 2008
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Thank You
Carol Dunn
Emergency Services Department
Community Disaster Education
American Red Cross
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Goals
• Learn About the Earthquake Risk to Our Area
• Factors that Influence Outcome:– Ground Composition – Building Construction– Decisions and Preparation
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The Earth is Like a Lava Lamp
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Hot Cold
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Faults
Pressure Created Crumples in the CrustThat 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.
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Here’s where we knowthe earth has crumpledand creased in the Seattle area. There are also faults deep under groundthat we can’t see.
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The ground we walk on
• Soil Types– Rock– Rock/Water/etc
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• 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
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Seattle pre-1889
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Uninformed Decisions in 1889
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Saw Dust Fill
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Liquefaction Maps
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• 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
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Hard earned success led to the demand for impressive buildings
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Everyone was building bigger, Building stronger
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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
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Best: low, wood --Bolted to Foundation
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OK: Steel and reinforced concrete:
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Bad for Quakes: Soft Structures
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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
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Unreinforced Masonry
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Options
• Retrofit– Anchor masonry to wood– Add Framing
• Still will be risks
• Rebuild– Create a new safer building
• Lose character and feeling of history
• Relocate– Currently located in one of the most dangerous
parts of the city• Lose character and history
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On line Data Sources
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Buildings that received funding for retrofitting in 2001
• Historic Seattle Save the Buildings Fund – Milwaukee and Alps Hotels – Hong Kong Building – Hip Sing Building – The Bing Kung Building– The Bush Hotel
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Because of JoltBe Sure to Bolt
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• Know what to expect—
• Do not run outside!
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Be prepared for disruption
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Stay Healthy
1 gallon perperson perday for a min3 days
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Best:Non Perishable
No need for heatingLimited water
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Stay healthy
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BrrrrrrMaintain the rightBody temperature
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InformationImportant Documents
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Get through debris
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Coping
– Be aware that unusual events cause unusual and intense emotions
– Talk about your feelings– Include Comfort Items in
your supplies
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Have a back up care plan
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Not just for people
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The challenges of family care providers are greater than almost any othergroup in our community-We need to help make connections
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The ability to communicateis 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
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9-1-1
• 9-1-1 calls from pay phones are free. – May be overwhelmed in a
disaster
• Over 100 Languages:– “Fire,
Mandarin/Cantonese/etc”– “Police,
Mandarin/Cantonese/etc”– Medical,
Mandarin/Cantonese/etc”
• Stay on the line!
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211—Language Support
American Red Cross:
206-323-2345
Information
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AM 710 AM 1000 TV: 7
In English
Puget Sound Area
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Thank You
• For more information contact:• Carol Dunn• The American Red Cross • Community Disaster Education
Department• [email protected] • 206.709.4528• Language Bank: 206-323-2345