The following data were tabulated for a direct shear test of a normally consolidated soil sample. Normal stress applied = 70 kPa Angle of internal friction = 28° al Compute the shearing stress in kPa. [Select] b) Find the maximum shearing stress in kPa. (Select ] CDetermine the maximum principal stress in kPa. [Select ]
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- The following data are given for a direct shear test conducted on dry sand:- Specimen dimensions: 75 mm X 75 mm X 30 mm (height)- Normal stress: 200 kN/m2- Shear stress at failure: 175 kN/m2a) Determine the angle of friction,b) For a normal stress of 150 kN/m2, what shear force is required to cause failure?A sample was obtained from point A in the submerged clay layer shown below. It was determined that it had a w = 54%, and a Gs = 2.78. What is the effective vertical stress at A? Express your answer in kPa rounded to the nearest whole number.The following data were obtained from a triaxial test on a cohesive soil: Maximum shearing stress at failure plane = 65kPa Angle of friction = 28 deg Cohesion = 31kPa Determine the plunger stress in kPa. Determine the minimum confining pressure, in kPa
- The following results were obtained from undrained tests on specimens of an over-consolidated clay: Plot the mohr circles anddetermine the effective stress parameters c′ and ϕ′ Cell Pressure (kPa) 100 250 400 Deviator Stress at Failure (kPa) 340 410 474 Pore Pressure (kPa) -42 64 177A direct shear test, when conducted on a remolded sample of sand, gave the following observations at the time of failure: Normal load = 288 N; shear load = 173 N. The cross-sectional area of the sample = 36 cm2. Determine the minor principal stress in kPa. Show diagramThe equation of the effective stress failure envelope for a loose sandy soil was obtained from a direct shear test as Ss = Sn tan 36 degrees; where Ss is shearing stress, Sn is normal stress. A drained triaxial test was conducted with the same soil at a chamber confining pressure of 15 lb/in^2.1. Estimate the angle that the failure plane makes with the major principal plane. a. 63 degreesb. 54 degressc. 45 degreesd. 36 degrees2. Determine the normal stress on the plane that makes an angle of 25 degrees with the major principal plane. a. 61.24 lb/in^2b. 50.14 lb/in^2c. 13.15 lb/in^2d. 16.39 lb/in^23. Determine the shear stress (when the specimen failed) on the plane that makes an angle of 25 degrees with the major principal plane.a. 61.24 lb/in^2b. 50.14 lb/in^2c. 13.15 lb/in^2d. 16.39 lb/in^2
- A triaxial test conducted on cohesionless soil gives the following results: Deviator stress at failure = 410kPa The angle of shearing resistance = 32 degrees Determine the following: a. Confining pressure in kPa b. Shear stress at failure plane in kPa c. Angle that the failure plane makes with the principal plane (degrees)After conducting a tri-axial test on a sand sample, the normal and shearing stress on the failure plane at failure was found to be 475kPa and 350kPa, respectively. Which of the following most nearly gives the plunger stress?A direct shear test, when conducted on a remolded sample of sand, gave the following observations at the time of failure: Normal load = 288 N; shear load = 173 N. The cross-sectional area of the sample = 36 cm2. Determine the minor principal stress in kPa.
- in a drained triangle test on consolidated clay the stress and angle area as follows deviator stress is 20 lb/ in ^2 and friction angle is 21 degree calculate the effective confining pressure at failurehe following results were obtained from a direct shear test conducted on pure sand: Sample height and diameter = 30 mm and 75 mm respectively. Normal stress = 100 kN/m2 Shear force at failure = 185 N a) Determine the angle of friction for the soil. Round off to one decimal i.e. 99.5! b) What would be the shear force (in N) at failure if the normal stress is 175 kN/m2? Round off to the nearest figure i.e. 300.55 to 301! c) What would be the principal stress at failure? Consider a and bAn undisturbed soil sample, 110 mm in diameter and 220 mm in height, was tested in a triaxial machine. The sample sheared under an additional axial load of 3.35 kN with a vertical deformation of 21 mm. The failure plane was inclined at 50˚ to the horizontal and the cell pressure was 300 kN/m2. i. Draw the Mohr circle diagram representing the above stress conditions, and from it determine: − Coulomb’s equation for the shear strength of the soil, in terms of total stress; − the magnitude and obliquity of the resultant stress on the failure plane