N. Chapter 11 - Chapter 11 Mass Wasting Def'n: the...

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Chapter 11 Mass Wasting Def’n: the downslope movement of material under the direct influence of gravity. Also called mass movement Slope failure occurs when the gravitational force acting on a slope exceeds its resisting force. Landslides (common term) covers many types of mass wasting. Goals for Chapter 11 Learn what factors lead to mass wasting Discover ways to prevent or minimize damage Factors influencing a slope 1. Shear strength see fig. 11.2 - slope materials strength and cohesiveness - internal friction between grains - external support of the slope 2. Gravity - this force works against shear strength and has 2 components, a downward force and force parallel to the slope Angle of repose - steepest angle a slope can maintain without collapsing - shear strength = or exceeds gravity
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Factors which can cause mass wasting 1. Slope angle - major cause! The steeper the slope, the less stable it is. What oversteepens a slope?
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This note was uploaded on 04/16/2008 for the course GEOL 1403 taught by Professor Teague during the Spring '08 term at Tarrant County.

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N. Chapter 11 - Chapter 11 Mass Wasting Def'n: the...

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