A sample of dry sand is tested in direct shear. The shear box holding the sample has a circular cross section with a diameter of 50 mm. The normal(compressive) load imposed is 200 N. The sample shears when the shear force is 130 N.(a) Determine the test normal stress and shear stress at failure.(b) Determine the angle of internal friction f for this soil.(c) What is the probable condition of the tested sample (dense, loose, etc.)?

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 |