If a shear test result shows that sigma1=450Kpa, sigma3=200KPa, c=20KPa, phi=30°.Has the shear failure occurred in soil already?
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If a shear test result shows that sigma1=450Kpa, sigma3=200KPa, c=20KPa, phi=30°.Has the shear failure occurred in soil already?
3. Shear Strength a. Plot the effective stress Mohr-Coulomb failure envelope for a soil with c'-500 b. A plane through a sample of this soil has an effective normal stress of c. Use a Mohr circle that touches the failure enve psf and 32 deg. acting on it. What is the shear strength of the soil on that plane? of 2000 psf to estimate the values of σ, and σ, at a state of shear failure 2000 psf lope at...
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...
A geotechnical engineer is evaluating the stability of a natural sandy soil slopc as shown nextpa) This evaluation is considering the potential for a shear failurc along the shear surface shown. Moist unit weight of the sandy soil, y- 120 Ib/ft 14 ft Saturated unit weight of the sandy soil, s 123 lb/ft 12 ft The soil has a drained friction angle of 30 deg, and no cohesive strength. 20 ft Potential shear (A) Compute the soil shear strength at...
Problem 3b: Results from a CU Triaxial test are given below. a. Determine the total shear strength parameters of the soil. b. Determine the effective shear strength parameters of the soil c. Determine the long term shear strength of the soil at 20 ft depth. c. Determine the short term shear strength of the soil at 20ft depth. Assume y 115 pcf, Water table at 12 ft depth Sample 2 σ)" 15 psi OA- 18 psi u- 3 psi Sample...
soil mechanics ***Shear strength-11: Use of the Mohr-Coulomb failure envelope. (Revised Oct-09) Samples have been obtained from both soil strata shown in the figure below. A series of shear strength tests were then performed on both samples and plotted in diagrams below. The e' and ' values obtained from these diagrams are shown in the figure below. Using this data, compute the shear strength on the horizontal and vertical planes at points A, B, and C. Sand and grows KN...
Problem 13. Refer to the triaxial shear test data (page below) to answer the following questions. a) What type of triaxial test was performed (CU, CD, or UU)? How can you tell? b) Samples of Soil 2 (see profile below) were obtained for the triaxial shear tests. Based on the results of the triaxial shear tests and the soil profile shown below, calculate the long-term shear strength of the soil at point A Soil 1: Soil 1 A 5 m...
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...
please help me Q2:- The data for two soil samples at triaxial Consolidated-Undrained (C-U) test was as follow: Deviator load Height Diameter Cell pressure Pore water pressure sample (gram) (mm) (mm) (03) (pa) (Au) (pa) Si 75 35 50000 40000 4815 S2 72 35 70000 50000 5775 a) Draw the T - o relationship and determine shear strength parameters. b) Estimate the effective shear and normal stresses at failure plane for sample (S1). (tack g=10m/s) (30 points)
Name: 12. Which of the following represents the correct standard proctor test procedure? a. 3 soil layers, with 30 blows per layer using a 5.5 lb hammer dropped a distance of 12 inches b. 3 soil layers, with 25 blows per layer using a 10 lb hammer dropped a distance of 12 inches c. 5 soll layers, with 30 blows per loyer using a 10 lb hammer dropped a distance of 10 inches d. 3 soll layers, with 25 blows...
Lantana Company has provided you with the transactions that occurred during its first month of operations. The Controller has already recorded the transactions to the T-Accounts and has asked you to prepare the classified balance sheet based on the T-Account balances. Use the information included in the Excel Simulation and the Excel functions described below to complete the task. Cell Reference: Allows you to refer to data from another cell in the worksheet. From the Excel Simulation below, if in...