a. A shear box test carried out on a soil sample gave the following results ✓ Vertical load [kg] 36.8 73.6 110.4 147.2 Gauge reading for proving 16 26 35 44 (shearing) ring [μm] If the shear box is 60 mm square and the proving ring constant/factor is 20 N/μm, determine the apparent cohesion and angle of internal friction for this soil. HINT: Determine normal stress from vertical load readings and shear stress from proving ring readings

A series of direct shear tests were conducted on a sample of soil in a 60 mm square shear box. The table below shows the results that were obtained at failure. Plot the graph of shear stress at failure against normal stress anddetermine the strength parameters of the soil. Normal Load (N) 200 300 400 Shear Load (N) 105 142 180

In Triaxial test, which of the following parameters do not need to be recorded the confining pressure specimen diameter changes ) the generated pore pressure the axial force A Triaxial test was performed on a dry, cohesionless soil. If the sample failed vhen the minor principal stress was half of the major principal stress, the soil's angle of internal friction is: O 22.5 19.5 33.3 O 25 A technician obtained a soil void ratio of 1.5. It is okay because it is possible to measure void ratio values above 1. True False |

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