For a dry sandy soil, a direct shear test was performed. Its vertical normal force was 10 kgf and the measured shear force was 6.34 kgf. The specimen was prepared in a circular shear box of 10 cm in diameter. (a) Determine the angle of internal friction o of the soil. (b) When the normal stress of 150 kPa is applied, what will be the failure shear stress of this soil?

For a dry sandy soil, a direct shear test was performed. Its vertical normal force was 10 kgf and the measured shear force was 6.34 kgf. The specimen was prepared in a circular shear box of 10 cm in diameter. (a) Determine the angle of internal friction o of the soil. (b) When the normal stress of 150 kPa is applied, what will be the failure shear stress of this soil?

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

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Two different soil samples were subjected to the shear strength test, of which, the first cohesive soil specimen failed at the deviator test of 500 kN/m2, when the cell pressure of 400 kN/m2 was recorded in the tri-axial shear apparatus. The second soil sample with the coefficient of internal friction 30° was subjected to direct shear test. The proving ring constant value is 0.0001 N/µm and the soil failed at the constant normal stress of 600 kN/m2, when the dial gauge reading was observed as 50. Take the area of soil sample at failure as 100 cm2. What is the ratio of cohesion of the soil specimen (1) to soil specimen (2).
4. Please answer parts a and b
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Soil Mechanism
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