(4) A triaxial test is conducted on a rock sample with a joint inclined at an angle of 40° to the horizontal. The properties of the intact rock and the joint are given as follows: for intact rock, c=6 MPa, -40°; for joint, cj=2 MPa, g=22°. The confining pressure for the test is 10 MPa. Determine which will fail first, the intact rock or the joint? Determine the value of the axial stress at failure.

(4) A triaxial test is conducted on a rock sample with a joint inclined at an angle of 40° to the horizontal. The properties of the intact rock and the joint are given as follows: for intact rock, c=6 MPa, -40°; for joint, cj=2 MPa, g=22°. The confining pressure for the test is 10 MPa. Determine which will fail first, the intact rock or the joint? Determine the value of the axial stress at failure.

Principles of Foundation Engineering (MindTap Course List)

9th Edition

ISBN:9781337705028

Author:Braja M. Das, Nagaratnam Sivakugan

Publisher:Braja M. Das, Nagaratnam Sivakugan

Chapter3: Natural Soil Deposits And Subsoil Exploration

Section: Chapter Questions

Problem 3.14P

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