Question

DISCUSSIONS:

1. Draw a typical stress-strain diagram and indicate what are meant by peak strength and residual strength .

2. What are the limitations of direct shear stress? 3.

Draw the Mohr’s circle foe failure for a direct shear stress test and mark the failure plane, a major principle plain and minor principal plain.

4. If the test is under a normal stress of 2.5 kg/cm2 , find the shear load at which the soil will fail.(Use ? found from the test).

5. State the Mohr – Cuolomb criteria for shear strength in terms of the effective stresses

6. What are the advantages of the direct shear test over the triaxial test?

Answer 1

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