1. A tri axial test was conducted on a moist sand sample. The shear strength of the sample of the soil was tested @ a depth of 12.76m below the ground surface. Gs of sand is 2.65, degree of saturation is 80%, e = 0.3. Failure occurred @ a shear stress off 200Kpa. The cohesion of the soil was found to be 65Kpa. a. Compute the angle of internal friction of the soil sample. b. Compute the angle of failure plane. c. Compute the value of the maximum principal stress.

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Soil Mechanism

1. A tri axial test was conducted on a moist sand sample. The shear strength of the sample of the soil
was tested @ a depth of 12.76m below the ground surface. Gs of sand is 2.65, degree of saturation
is 80%, e = 0.3. Failure occurred @ a shear stress off 200Kpa. The cohesion of the soil was found to
be 65Kpa.
a. Compute the angle of internal friction of the soil sample.
b. Compute the angle of failure plane.
c. Compute the value of the maximum principal stress.
Transcribed Image Text:1. A tri axial test was conducted on a moist sand sample. The shear strength of the sample of the soil was tested @ a depth of 12.76m below the ground surface. Gs of sand is 2.65, degree of saturation is 80%, e = 0.3. Failure occurred @ a shear stress off 200Kpa. The cohesion of the soil was found to be 65Kpa. a. Compute the angle of internal friction of the soil sample. b. Compute the angle of failure plane. c. Compute the value of the maximum principal stress.
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