An undisturbed sample of soft clay is taken from a depth at which ao = 50kPa and o, = 100kPa.A specimen is set up in the triaxial cell and under fully drained condition is subjected co a final equal all-round pressure of 250 kPa. After primary consolidation, drainage valves are urned off and cell pressure is increased by 200 kPa and a pore water pressure of 200 kPa is measured. The specimen is then sheared by increasing the axial stress. At failure, the increase in
An undisturbed sample of soft clay is taken from a depth at which ao = 50kPa and o, = 100kPa.A specimen is set up in the triaxial cell and under fully drained condition is subjected co a final equal all-round pressure of 250 kPa. After primary consolidation, drainage valves are urned off and cell pressure is increased by 200 kPa and a pore water pressure of 200 kPa is measured. The specimen is then sheared by increasing the axial stress. At failure, the increase in
Chapter2: Loads On Structures
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Problem 1P
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![table and pumping is maintained for only 30 days (Yw-10 kN/m3, U=2 ).
3- An undisturbed sample of soft clay is taken from a depth at which oo = 50kPa and o, =
100kPa. A specimen is set up in the triaxial cell and under fully drained condition is subjected
to a final equal all-round pressure of 250 kPa. After primary consolidation, drainage valves are
turned off and cell pressure is increased by 200 kPa and a pore water pressure of 200 kPa is
measured. The specimen is then sheared by increasing the axial stress. At failure, the increase in
axial stress is Ao, = 160 kPa and the total measured pore water pressure is 344 kPa. For this
laboratory consolidated specimen compute:
a) undrained shear strength,
b) friction angle, Ø' and
c) compressive strength if the same specimen had been sheared to failure under fully drained
condition.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1a58407f-1f57-40ae-9e8e-90adca9ef8c2%2F6c2ffe93-bf21-4e32-b907-77ca39ab1047%2Fypyujvs_processed.jpeg&w=3840&q=75)
Transcribed Image Text:table and pumping is maintained for only 30 days (Yw-10 kN/m3, U=2 ).
3- An undisturbed sample of soft clay is taken from a depth at which oo = 50kPa and o, =
100kPa. A specimen is set up in the triaxial cell and under fully drained condition is subjected
to a final equal all-round pressure of 250 kPa. After primary consolidation, drainage valves are
turned off and cell pressure is increased by 200 kPa and a pore water pressure of 200 kPa is
measured. The specimen is then sheared by increasing the axial stress. At failure, the increase in
axial stress is Ao, = 160 kPa and the total measured pore water pressure is 344 kPa. For this
laboratory consolidated specimen compute:
a) undrained shear strength,
b) friction angle, Ø' and
c) compressive strength if the same specimen had been sheared to failure under fully drained
condition.
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