RISK ASSESSMENT

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RISK ASSESSMENT

• INVOLVES HAZARD, EXPOSURE, AND VULNERABILITY ON
  LOCAL, NATIONAL, REGIONAL, AND GLOBAL SCALES

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(No Transcript)
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ELEMENTS OF RISK
RISK
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RISK ASSESSENT INVOLVES HAZARD, VULNERABILITY AND
EXPOSURE
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EXAMPLES OF INVENTORY AT RISK IN A TYPICAL
COMMUNITY
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EXAMPLES OF EARTHQUAKE VULNERABILITY CURVES
MEAN DAMAGE RATIO, OF REPLACEMENT
VALUE
INTENSITY
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CAUSES OF DAMAGE
INADEQUATE RESISTANCE TO HORIZONTAL GROUND SHAKING
SOIL AMPLIFICATION
PERMANENT DISPLACEMENT (SURFACE FAULTING GROUND
FAILURE)
IRREGULARITIES IN ELEVATION AND PLAN
EARTHQUAKES
TSUNAMI WAVE RUNUP
CASE HISTORIES
LACK OF DETAILING AND CONSTRUCTION MATERIALS
INATTENTION TO NON-STRUCTURAL
ELEMENTS
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CAUSES OF DAMAGE
BUILDING IN FLOOD PLAIN
INUNDATION
INTERACTION WITH HAZARDOUS MATERIALS
EFFECTS OF WATER ON STRUCTURE CONTENTS
FLOODS
INCREASED POTENTIAL FOR HEALTH PROBLEMS, DEATH
AND INURY
CASE HISTORIES
LOSS OF INFRASTRUCTURE
VULNERABILITY OF NON-STRUCTURAL ELEMENTS
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CAUSES OF DAMAGE
WIND PENETRATING BUILDING ENVELOPE
UPLIFT OF ROOF SYSTEM
FLYING DEBRIS
UNDERESTIMATION OF WIND SPEEDS AND STORM SURGE
SEVERE WINDSTORMS
IRREGULARITIES IN ELEVATION AND PLAN
CASE HISTORIES
QUALITY OF WORKMANSHIP
IGNORING NON-STRUCTURAL ELEMENTS
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CAUSES OF DAMAGE
PROXIMITY TO LATERAL BLAST
IN PATH OF PYROCLASTIC FLOWS
IMPACT OF FLYING DEBRIS (TEPHRA)
IMPACT OF VOLCANIC ASH ON AVIATION
VOLCANIC ERUPTIONS
NOT DIVERTING LAVA FLOWS
CASE HISTORIES
NOT DIVERTING LAHARS
IGNORING WARNING TO EVACUATE
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CAUSES OF DAMAGE
HIGH VELOCITY IMPACT OF INCOMING WAVES
INLAND DISTANCE OF WAVE RUNUP
VERTICAL HEIGHT OF WAVE RUNUP
INADEQUATE RESISTANCE OF BUILDINGS
TSUNAMIS
FLOODING
CASE HISTORIES
INADEQUATE HORIZONTAL AND VERTICAL EVACUATION
PROXIMITY TO SOURCE OF TSUNAMI
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MODELED DAMAGE DISTRIBUTION FOR ALL EXPOSURES AND
ALL EVENTS
Total Area Under Curve EAL for Entire
Portfolio of Risks Layers Slices Retentions
and Transferred Amounts
Individual Modeled Events
Event Probability
Individual Modeled Events
1 Tail of the Distribution
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Dollars of Loss
1/100 Threshold Event
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COMMUNITY
DATA BASES AND INFORMATION
HAZARDS GROUND SHAKING GROUND FAILURE
SURFACE FAULTING TECTONIC DEFORMATION TSUNAMI RUN
UP AFTERSHOCKS