In a direct shear test on a specimen of cohesionless soil (sand), the vertical normal stress on the specimen is 210 kPa and the horizontal shear stress at failure is 135 kPa. You may assume the uniform stress distribution within the failure zone. a) determine the magnitude and direction of the principal stresses at failure using a Mohr's circle b) briefly explain whether it's possible to determine the magnitude and direction of the principal stresses when the material is not failed.

Q: A student conducted 2 UU triaxial tests on Kaolin clay samples in the laboratory. Table 1 provides…

A:

Q: A very long steel drill pipe got stuck in hard clay at an unknown depth. The drill pipe was applied…

A:

Q: Q-1: Direct shear tests were performed on a dry, sandy soil. The size of the specimen was 50 mm x 50…

A:

Q: Following data are given for a direct shear test conducted on dry sand: • Specimen dimensions: 75 mm…

A: Given:- The dimension of the specimen = 75 mm ×75 mm×30 mm The normal stress = 250 kN/m2  The shear…

Q: A clay specimen was tested in undrained direct shear, under a normal stress of 50 kPa. The peak…

A:

Q: A sample of dry sand is tested in direct shear. The shear box holding the sample has a circular…

A: Given:Normal load, P=200 Nshear force, F=130 NDiameter of sample circular section, D=50 mm

Q: Following data are given for a direct shear test conducted on dry sand:  Cylindrical specimen…

A:

Q: While applying shear stress to a saturated clay sample, the specimen experiences volume change in…

A: Total pore water pressure may be conveniently considered to consist of the combined effect of four…

Q: For a direct shear test on a soil having USCS classification SP, the shear stress at failure was…

A: Soil type = Sp (Poorly graded sand) Shear stress at failure , τ = 45.5 kPa Normal stress at failure,…

Q: An intact solid cylindrical specimen of diameter 60 mm and thickness 30 mm is prepared from a…

A: Hoek-Brown Failure Criterion : The Hoek-Brown failure criterion is used to predict the failure of…

Q: A sand sample is subjected to  direct shear testing at it's (in - situ) water  content. Two tests…

A: Shear Stress, T = 400 KPaNormal Stress, σ = 600KPa. for sand , Cohesion C = 0

Q: A Effective Normal Stress, ơ' Effective normal stress at point A (psi) = ... (Report to the nearest…

A:

Q: were obtained at the peak in a series of CU tests with constant cell pressure (isotropic) for a…

A:

Test for Determination of Shear Strength

The term shear strength is often associated with the soil. Shear strength is defined as the resistance to the deformation of soil particles due to the continuous action of shear stress. In short, shear strength is the maximum shear stress that a soil can sustain.