A level soil deposit consists of a deep layer of sand with the following properties: 7...

 

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A level soil deposit consists of a deep layer of sand with the following properties: 7 = 18kN/m³ Ko = 0.4 6=30° The water table is Im below the surface. Consider a point x which is 4m below the surface. What value of shear stress would need to be added on a plane passing through x and making an angle of 30° with the horizontal to cause shear failure of the sand on that plane? Assume that the normal stress on this plane remains unchanged. A level soil deposit consists of a deep layer of sand with the following properties: 7 = 18kN/m³ Ko = 0.4 6=30° The water table is Im below the surface. Consider a point x which is 4m below the surface. What value of shear stress would need to be added on a plane passing through x and making an angle of 30° with the horizontal to cause shear failure of the sand on that plane? Assume that the normal stress on this plane remains unchanged.