Upload
leon-simon
View
216
Download
0
Tags:
Embed Size (px)
Citation preview
1998 Kelso, Washington, Landslide1998 Kelso, Washington, Landslide• Second largest suburban landslide in U.S. history• Exceptionally unstable geology
– Troutdale Formation overlies Cowlitz Formation• The contact is a potential failure surface
• FEMA-funded buy-out– 137 homes damaged to some extent– 127 homes to be purchased– Owners paid a maximum of 37.5% of house value
Kelso, WA Landslide: Locator MapKelso, WA Landslide: Locator Map
Kelso, WA Landslide: OverviewKelso, WA Landslide: Overview
Upper Aldercrest: A Down-Scarp ViewUpper Aldercrest: A Down-Scarp View
Upper Aldercrest: Small ScarpUpper Aldercrest: Small Scarp
Upper Aldercrest: A Plumb WellUpper Aldercrest: A Plumb Well
Upper Aldercrest: Hanging DrivewayUpper Aldercrest: Hanging Driveway
Upper Aldercrest: Downdropped HouseUpper Aldercrest: Downdropped House
Upper Aldercrest: Separated SectionUpper Aldercrest: Separated Section
Upper Aldercrest: Part of the DrivewayUpper Aldercrest: Part of the Driveway
Upper Aldercrest: Rotated StructuresUpper Aldercrest: Rotated Structures
Upper Aldercrest: Hanging StructureUpper Aldercrest: Hanging Structure
Upper Aldercrest: Missing FoundationUpper Aldercrest: Missing Foundation
Upper Aldercrest: Separated SectionUpper Aldercrest: Separated Section
Upper Aldercrest: Torn & TwistedUpper Aldercrest: Torn & Twisted
Upper Aldercrest: Separated MasonryUpper Aldercrest: Separated Masonry
Upper Aldercrest: An Abrupt ScarpUpper Aldercrest: An Abrupt Scarp
Upper Aldercrest: Hanging RoofUpper Aldercrest: Hanging Roof
Upper Aldercrest: Tilted Plumb WellUpper Aldercrest: Tilted Plumb Well
Lower Aldercrest: Temporary WaterLower Aldercrest: Temporary Water
Lower Aldercrest: Moderate MovementLower Aldercrest: Moderate Movement
Lower Aldercrest: New Tension CrackLower Aldercrest: New Tension Crack
Lower Aldercrest: Side-Slope ShiftingLower Aldercrest: Side-Slope Shifting
Lower Aldercrest: Detached GarageLower Aldercrest: Detached Garage
Lower Aldercrest: Unwanted SunroomLower Aldercrest: Unwanted Sunroom
Lower Aldercrest: A New EntrywayLower Aldercrest: A New Entryway
Lower Aldercrest: Minor ShiftingLower Aldercrest: Minor Shifting
Lower Aldercrest: Natural “Tea”Lower Aldercrest: Natural “Tea”
Lower Aldercrest: Offset CurbingLower Aldercrest: Offset Curbing
Lower Aldercrest: Lowered BasketLower Aldercrest: Lowered Basket
Lower Aldercrest: Parallelogram ShiftLower Aldercrest: Parallelogram Shift
Lower Aldercrest: Hold-Out ResidentLower Aldercrest: Hold-Out Resident
Lower Aldercrest: Pressure RidgeLower Aldercrest: Pressure Ridge
Lower Aldercrest: New ScarpLower Aldercrest: New Scarp
Lower Aldercrest: Halted ConstructionLower Aldercrest: Halted Construction
Lower Aldercrest: Lateral ShiftLower Aldercrest: Lateral Shift
Lower Aldercrest: Lateral Shift DetailLower Aldercrest: Lateral Shift Detail
Lower Aldercrest: Tension CracksLower Aldercrest: Tension Cracks
Lower Aldercrest: Makeshift RoadwayLower Aldercrest: Makeshift Roadway
Lower Aldercrest: Parallelogram #2Lower Aldercrest: Parallelogram #2
Lower Aldercrest: First Floor DamageLower Aldercrest: First Floor Damage
Lower Aldercrest: A Side ViewLower Aldercrest: A Side View