1) Unconsolidated undrained (UU) triaxial test was conducted on clay specimen with diameter and height of 37.5 mm and 76 mm respectively. The test results are shown in Table 1. Plot

the typical stress-strain relationships and determine the undrained peak shear strength of the tested soil, taking into account the variation of changing sheared areas during test. Additionally, determine the strain value at which the peak shear strength be mobilized? Table 1. Test results for soil tested in triaxial shear apparatus Cell Pressure (03) = 105 kPa Axial Displacement (mm) Proving Ring Reading of Axial Load (Div.) 0 0.25 0.51 0.76 1.02 1.27 1.5 2.5 3.5 4.6 5.6 6.6 7.6 8.9 10.2 11.4 12.7 Use the following to process the data: • Proving Ring Constant = 0.00165 kN/div • Axial Strain, &₁ = Axial Displacment Specimen Height Ao (1-₁) Specimen Area, A = CORY 0 3.5 7.5 11 14 18 21 31 38 44 48 52 53 5.2 50 49 49