A site is underlain by two layers of normally consolidated clayey sand. The unit weights of the top layer are 19 and 21 kN/m3 and the layer is 6 meters thick. The unit weights of the bottom layer are 20 and 22 kN/m3 , and the layer is 8 meters thick. Below the bottom layer lies bedrock. The water table is located 2 meters below the ground surface. The top layer soil has a friction angle of 38 degrees, a cohesion intercept of 20 kPa, and an undrained strength of 160 kPa. The bottom layer soil has a friction angle of 33 degrees, a cohesion intercept of 10 kPa, and an undrained strength of 120 kPa. Point A is located 9 meters underground. All layers have a lateral stress ratio of 0.5. Draw the Mohr Circle and use it to calculate the drained strength of the soil at point A on the plane inclined 10 degrees counter-clockwise from the horizontal plane.
A site is underlain by two layers of normally consolidated clayey sand. The unit weights of the top layer are 19 and 21 kN/m3 and the layer is 6 meters thick. The unit weights of the bottom layer are 20 and 22 kN/m3 , and the layer is 8 meters thick. Below the bottom layer lies bedrock. The water table is located 2 meters below the ground surface. The top layer soil has a friction angle of 38 degrees, a cohesion intercept of 20 kPa, and an undrained strength of 160 kPa. The bottom layer soil has a friction angle of 33 degrees, a cohesion intercept of 10 kPa, and an undrained strength of 120 kPa. Point A is located 9 meters underground. All layers have a lateral stress ratio of 0.5. Draw the Mohr Circle and use it to calculate the drained strength of the soil at point A on the plane inclined 10 degrees counter-clockwise from the horizontal plane.
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