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Mass Wasting

Mass Wasting. Week 6. Questions for Discussion. Would you live on a slope? If so, where? What level of risk from mass wasting is acceptable to you? (How would you know if the slope risk was assessed accurately?)

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Mass Wasting

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  1. Mass Wasting Week 6

  2. Questions for Discussion • Would you live on a slope? If so, where? • What level of risk from mass wasting is acceptable to you? (How would you know if the slope risk was assessed accurately?) • What should be done by people and communities in areas prone to slope failure to prepare for the hazard and prevent catastrophe?

  3. Other Questions to Consider • What factors impact the stability of a slope? • The five concepts form Chapter 1

  4. Mass Movements • Mass Wasting • Down slope movement of earth materials • Caused by gravity

  5. Impact of Mass Movements • Structural damage • Surface disruption

  6. Slope Factors • Angle of slope • Water content • Material composition • Material orientation • Vegetation • Loading • Undercutting • Weathering of materials

  7. Slope Movement Triggers • Rainfall • Vibration • Undermining • Loading

  8. Types of Slope Failures • Slides • Flows • Falls • Creep • Avalanche

  9. Addressing Unstable Slopes • Identification & mapping • Slope monitoring • Stabilization • vegetation • water removal • structural controls

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