Question 1 A consolidated drained (CD) triaxial test was carried out on a sand sample with the known effective shear strength parameters, C' = 0 and '= 30°. In the test, prior to the failure, when the sample was undergoing axial compression under constant cell pressure, the drainage valve was accidentally closed. At the failure, 360kPa deviatoric stress was recorded along with 70kPa pore water pressure. If the test is repeated without such error, and no back pressure is applied in either of the tests, what is the deviatoric stress (in kPa, in integer) at the failure? A 11 B C 350 D 500 200

Structural Analysis
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Author:KASSIMALI, Aslam.
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Chapter2: Loads On Structures
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Question 1
A consolidated drained (CD) triaxial test was
carried out on a sand sample with the known
effective shear strength parameters, C' = 0
and ø′ = 30°. In the test, prior to the failure,
when the sample was undergoing axial
compression under constant cell pressure,
the drainage valve was accidentally closed. At
the failure, 360kPa deviatoric stress was
recorded along with 70kPa pore water
pressure. If the test is repeated without such
error, and no back pressure is applied in
either of the tests, what is the deviatoric
stress (in kPa, in integer) at the failure?
A 11
B
C 350
D 500
200
Transcribed Image Text:Question 1 A consolidated drained (CD) triaxial test was carried out on a sand sample with the known effective shear strength parameters, C' = 0 and ø′ = 30°. In the test, prior to the failure, when the sample was undergoing axial compression under constant cell pressure, the drainage valve was accidentally closed. At the failure, 360kPa deviatoric stress was recorded along with 70kPa pore water pressure. If the test is repeated without such error, and no back pressure is applied in either of the tests, what is the deviatoric stress (in kPa, in integer) at the failure? A 11 B C 350 D 500 200
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