A long vertical drain is going to be made in a soil. Assume the failure plane...

  

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A long vertical drain is going to be made in a soil. Assume the failure plane shown in the figure. The soil is fully saturated. Assume that the lining does not provide any resistance against failure. Clay properties are: Saturated unit weight: gs = 18 kN/m³ Shear strength parameters: Cu = 80 kPa, fu = 0°, c'= 10 kPa, f' = 32⁰ 4m 2m 45⁰ 1. Evaluate the factor safety of the cut under undrained and drained conditions if the drain is empty. 1. Evaluate the factor of safety of the cut under undrained and drained conditions if the drain is half full. 1. Evaluate the factor of safety of the cut under the undrained and drained conditions if the drain is full of water. Note: It is not required to find the factor of safeties for other soil degree of saturation cases. A long vertical drain is going to be made in a soil. Assume the failure plane shown in the figure. The soil is fully saturated. Assume that the lining does not provide any resistance against failure. Clay properties are: Saturated unit weight: gs = 18 kN/m³ Shear strength parameters: Cu = 80 kPa, fu = 0°, c'= 10 kPa, f' = 32⁰ 4m 2m 45⁰ 1. Evaluate the factor safety of the cut under undrained and drained conditions if the drain is empty. 1. Evaluate the factor of safety of the cut under undrained and drained conditions if the drain is half full. 1. Evaluate the factor of safety of the cut under the undrained and drained conditions if the drain is full of water. Note: It is not required to find the factor of safeties for other soil degree of saturation cases.