A standard penetration test has been conducted on a coarse sand at a depth of 16 ft below the surface. The blow counts obtained in the field were as follows: 0-6 in. (4 blows), 6-12 in. (6 blows), and 12-18 in. (6 blows). The tests were conducted using a USA-style donut hammer in a 6 in. diameter boring using a standard sampler with the liner installed. The vertical effective stress at the test depth was 1500 lb.ft2. Determine N160-

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Q: Describe the procedure of he constant-rate-of-penetration test.

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Q: Testing Procedure for the Sand Equivalent Test.

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A: Given data: pre consolidation pressure = 120 kPa initial effective vertical stress = 100 kPa.

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.