Adry sand is known to have an angle of internal friction equal to 36°. A triaxial test is planned, where the confining pressure will be 40 kPa. What maximum axial stress (major principal stress) should be predicted?

A silty clay was brought to the lab for DST testing. Three drained tests were conducted, with effective stresses = 20, 30 and 40 kPa. The critical state shear stresses measured were 29.5, 36.2, and 43 kPa, respectively. Calculate the effective friction angle of the silty clay. Express your answer in degrees

Describe about the Unconsolidated–undrained (U–U) triaxial test data relationship between total stress, effective stress, and pore water pressure.

Q18 Please provide justified answer asap