Question: A soil has c = 1 0 kPa, phi = 3 0 ^ , , the maximum principal stress in the soil is 4

A soil has c

= 10

kPa,

\

phi

= 30^,,

the maximum principal stress in the soil is

400

kPa when it fails. What is its minimum principal stress in kPa when it fails?A CU triaxial test was conducted on a saturated clay specimen with confining stress of

200

kPa. The specimen failed when the axial load reached

200

kPa, the pore water pressure at this moment was

100

kPa. The effective normal stress on the failure surface is

(

kPa

)

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