8. A soil particle is subjected to a maximum stress of 14.6 kPa and a minimum stress of -4.18 kPa. Determine the normal and the shear stresses on the plane of 0 = 50⁰ with respect to the major principal stresses and also determine the shear strength of soil particle. Answer: 3.6 kPa, 9.2 kPa, and 9.4 kPa.

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Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can sustain.