You own a geotechnical engineering firm in NYC and your company has been hired by City College to conduct a slope stability analysis. Consider a 10.0 m-thick mass of regolith sitting on top of a bedrock surface with a slope of 14 degrees. Marshak is located at the top of this slope (and set back from the edge only 20 m). Upon an initial visit, you determine that the regolith is unsaturated (dry). You also estimate the following additional parameters for this Site:

regolith cohesion = 1100 N/m^2
regolith angle of internal friction = 15°
density of regolith = 2200 kg/m^3
(density of water = 1000 kg/m^3)

What is the value for the Factor of Safety? Would you consider the slope currently stable? Explain your answer.

Explanation:

You own a geotechnical engineering firm in central Minnesota and your company has been hired by a home owner to conduct a slope stability analysis. The home is located on a slope and the owner is worried about more development going on above his property. Consider a 10.0 m-thick mass of soil sitting on top of a bedrock surface with a slope of 12 degrees. A home is located at the top of this slope. Upon an initial visit, you determine that the soil is unsaturated meaning that the water table is below the soil layer (or slide plane). You also estimate the following additional physical parameters for this site: soil cohesion = 1500 N/m2 soil of coefficient internal friction = 0.3 density of soil = 2200 kg/m3 density of water = 1000 kg/m3 a. Calculate current values for shear strength and shear stress (both in units of N/m2 ) on this slope [5 pts] Shear Strength =

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it sounds like either a or c