![Two consolidated-undrained (CU) triaxial tests are carried out on a sample of<br>saturated overconsolidated clay. Table Q2 lists the main results at failure.<br>2.<br>Table Q2: Results from CU triaxial test<br>Minor principal<br>total stress 03<br>[kPa]<br>30<br>Test No<br>Axial<br>load<br>Pore water<br>pressure<br>[N]<br>450<br>[kPa]<br>10<br>Test 1<br>Test 2<br>60<br>700<br>20<br>(a) Based on the results in Table Q2, calculate the following total and effective<br>principal stresses at failure: 01, o'1, o'3 in kPa. For the calculation, consider<br>a constant cross-sectional area of the sample of 100 cm?.<br>8 mark<br>(b) Draw the two Mohr Circles at failure and the failure envelope for Test 1 and<br>Test 2.<br>[10 mas<br>(c) Compute the relevant effective strength parameters obtained from Test 1<br>and Test 2.<br>](https://s3.us-east-1.amazonaws.com/storage.unifolks.com/qimg-008/008_nluazp0-cqpndybq.jpeg)
Extracted text: Two consolidated-undrained (CU) triaxial tests are carried out on a sample of saturated overconsolidated clay. Table Q2 lists the main results at failure. 2. Table Q2: Results from CU triaxial test Minor principal total stress 03 [kPa] 30 Test No Axial load Pore water pressure [N] 450 [kPa] 10 Test 1 Test 2 60 700 20 (a) Based on the results in Table Q2, calculate the following total and effective principal stresses at failure: 01, o'1, o'3 in kPa. For the calculation, consider a constant cross-sectional area of the sample of 100 cm?. 8 mark (b) Draw the two Mohr Circles at failure and the failure envelope for Test 1 and Test 2. [10 mas (c) Compute the relevant effective strength parameters obtained from Test 1 and Test 2.