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45 Ootan (15 + + 2etan(+5 + ) Gotan 45- - 2c tan 45 Subject: Geotechnics...
Test#1 Name CVEN 435 Page 1/8 Initials) 1. A consolidated-drained (CD) triasial test was conducted on a ơ)-250 kNm, and the deviator clay. The results were as follows: confining stress at failure, (Aoah 250Nm friction.(2) angle 6 that the failure plane makes with the major principal plane, and the normal stress ơ and shear stress t on the failure plane. (Note: see Figure below for of internal (3) definition of failure plane and failure angle, 8. In a drained test,...
(a) Briefly explain Mohr-Coulomb theory and show how we can determine the shear strength parameters of soil by plotting the shear stress versus normal stress. [3 marks] The following results were obtained from a consolidated undrained Triaxial (CU) test with pore water pressure measurement on three samples of a fully saturated clay. Determine the total (undrained) stress and effective (drained) stress parameters. [12 marks] Sample Cell pressure (kN/m2) Deviator stress at failure (kN/m2) Pore pressure at failure (kN/m2) A 300...
Soil mechanics Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil , the ground water table is at depth of 3 m below the surface the bulk density of soil above the water table is Xb=18.9 kN/m3 and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 320 1 GS 3m 1 4 m Yo = 18.9 kN/m2 GWT Ysat. = 20.5 kN/m2 B)...
soil 3m 1 1 Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil , the ground water table is at depth of 3 m below the surface .the bulk density of soil above the water table is Yo=18.9 kN/m3 and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 32° GS Yo = 18.9 kN/m3 GWT Ysat. = 20.5 kN/m B) A Q =...
soil mechanics Q2)-A - Calculate the shearing strength along plane at 7 m in coarse sand soil, the ground water table is at depth of 3 m below the surface.the bulk density of soil above the water table is yo =18.9 kN/m and the saturated density below ground water table is 20.5 kN/m². The angle of internal friction of the sand is 32° - 4m GS 3m Yo = 18.9 kN/m2 V GWT Ysat. = 20.5 kN/m2 o = 32°...
Problems 39 ist four major factors that influence the internal friction angle of cohesionless soils 7-2 Define soil sensitivity and thixotropy In a direct shear test on a loose sand, a shearing stress of 36.1 kPa was recorded 7-3 while the normal stress on the failure plane was 66.4 kPa. (a) What are the shear strength parameters, c', φ'? (b) Find the major and minor principal stresses at failure. (c) Determine the shear strength at a normal stress of 110.0...
The state of stress within the soil below the ground surface is σ.-28 kPa, σ,-14 kPa, and t-4 kPa on the horizontal plane. Using Mohr's circle; a) Find the magnitude and directions of the major and minor principal stresses, that is the plane on which there are no shear stresses. b) If the material is a loose sand with a known friction angle of p-30 degrees and c'-0, construct the Coulomb failure envelope and determine if this soil is in...
4. Shear Strength A sample of cohesive soil with undrained shear strength of 30 Kpa is beng tested in a triaxial est with a confining pressure of 15 Kpa (see the figure below). Sketch the failure envelope and Mohr's circle representing the state of stress at failure. Evaluate the following: (i) The vertical axial stress at failure. (ii) The major and minor principal stresses at failure (ii) The orientation of failure plane with respect to horizontal plane. (iv) The normal...
Hg question A consolidated-drained triaxial test was conducted on saturated normally-consolidated clay sample. The effective confining stress was 200 kPa. The specimen failed at a deviatoric stress, (40), of 538 kPa. b. Determine the shear stress on the failure plane at failure. Use c = 0. Paragraph - BIE D Previous page Next page
12.4 During a subsoil exploration program, undisturbed normally consolidated silty clay samples were collected in Shelby tubes. Following are the results of four drained, direct shear tests conducted on the clay samples with each having a diameter of 63.5 mm and height of 32 mm. Test no. 1 Normal force (N) 84 168 254 360 Shear force at failure (N) 28.9 59.6 89.1 125 a) Graph shear stress at failure vs. normal stress (10 points) b) Determine the drained angle...