Lecture 24 - SL39 Summary of Slope Stability Methods (or...

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SL39 Summary of Slope Stability Methods (or when to use what ) Analysis Method Application(s) Limitations Cohesionless Soils (sands, c = 0) Infinite Slope moist ( γ m ), submerged ( γ ’), seepage ( γ sat ), homogenous planar failure, same FS for moist and submerged sands Cohesive Soils (soils containing clay or silt with c > 0) Infinite Slope moist ( γ m ), submerged ( γ ’), seepage ( γ sat ), homogenous forced planar failure for thin layers on very long slopes Wedge (Cullman) moist ( γ m ), submerged ( γ ’), homogenous forced planar failure for nearly vertical slopes, iterate for FS if φ 0 Taylor charts moist ( γ m ), submerged ( γ ’), homogenous, no seepage , circular rigid-body failure, (special rapid drawdown) iterate for FS if φ 0, short term* analysis, can be fully submerged Ordinary Method of Slices (Fellenius) moist ( γ m ), submerged ( γ ’), seepage ( γ sat ), external loads, non-homogenous profile, approx. circular failure non-rigorous solution,
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Lecture 24 - SL39 Summary of Slope Stability Methods (or...

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