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In a consolidated drained triaxial test, a specimen of clay tails at a cell pressure of 100kN/m2. The effective shear strength parameters are c' = 20kN/m2 and φ' = 300. 
Determine the major principal stress?___________kN/m2
(Important - Enter only the numerical value in the answer)
    Correct answer is '369.28'. Can you explain this answer?
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    Φ = 30°.

    The effective stress on the specimen can be calculated using the equation:

    σ' = σ - u

    Where:
    σ' = effective stress
    σ = total stress
    u = pore water pressure

    Since the test is consolidated drained, the pore water pressure is assumed to be zero. Therefore, the effective stress is equal to the total stress.

    σ' = 100 kN/m2

    The shear strength of the clay can be calculated using the Mohr-Coulomb equation:

    τ = c' + σ' tan(ϕ')

    Where:
    τ = shear strength
    c' = effective cohesion
    ϕ' = effective friction angle

    Plugging in the given values:

    τ = 20 kN/m2 + 100 kN/m2 tan(30°)

    Calculating the tangent of 30°:

    tan(30°) = 0.577

    τ = 20 kN/m2 + 100 kN/m2 (0.577)

    τ = 20 kN/m2 + 57.7 kN/m2

    τ ≈ 77.7 kN/m2

    Therefore, the shear strength of the clay specimen is approximately 77.7 kN/m2.
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    In a consolidated drained triaxialtest, a specimen of clay tails at acell pressure of 100kN/m2. Theeffective shear strength parametersare c' = 20kN/m2 and φ' = 300.Determine the major principalstress?___________kN/m2(Important - Enter only the numerical value in the answer)Correct answer is '369.28'. Can you explain this answer?
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    In a consolidated drained triaxialtest, a specimen of clay tails at acell pressure of 100kN/m2. Theeffective shear strength parametersare c' = 20kN/m2 and φ' = 300.Determine the major principalstress?___________kN/m2(Important - Enter only the numerical value in the answer)Correct answer is '369.28'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about In a consolidated drained triaxialtest, a specimen of clay tails at acell pressure of 100kN/m2. Theeffective shear strength parametersare c' = 20kN/m2 and φ' = 300.Determine the major principalstress?___________kN/m2(Important - Enter only the numerical value in the answer)Correct answer is '369.28'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In a consolidated drained triaxialtest, a specimen of clay tails at acell pressure of 100kN/m2. Theeffective shear strength parametersare c' = 20kN/m2 and φ' = 300.Determine the major principalstress?___________kN/m2(Important - Enter only the numerical value in the answer)Correct answer is '369.28'. Can you explain this answer?.
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