(a) A sample of cohesionless sand, whose friction angle is 33, is subjected to direct shear...
Fantastic news! We've Found the answer you've been seeking!
Question:
Transcribed Image Text:
(a) A sample of cohesionless sand, whose friction angle is 33°, is subjected to direct shear testing as shown on Figure Q-4. The sand fails when the shearing stress reaches a maximum value of 156 kPa. (i) What is the applied vertical pressure (due to the normal force N) acting on the soil sample? [2 marks] (ii) Determine, using Mohr's circle or otherwise, the magnitude of the principal stresses acting on a soil element X located near the horizontal failure shear plane (dashed line) as shown on Figure Q-4. [6 marks] DX Figure Q-4 AV cohesionless sand (b) The same cohesionless sand of part (a) is next subjected to consolidated drained (CD) triaxial testing in compression. The sample fails when the axial pressure (which includes the confining pressure) acting on the sample is 408 kN/m². What is the confining (cell) pressure used in this CD test? [5 marks] (c) The same cohesionless sand of part (a) is next subjected to consolidated undrained (CU) triaxial testing in compression. The sample fails when the deviator pressure acting on the sample is 153 kN/m² and the excess pore pressure at failure is 136.6 kN/m². What is the confining (cell) pressure used in this CU test? [7 marks] (a) A sample of cohesionless sand, whose friction angle is 33°, is subjected to direct shear testing as shown on Figure Q-4. The sand fails when the shearing stress reaches a maximum value of 156 kPa. (i) What is the applied vertical pressure (due to the normal force N) acting on the soil sample? [2 marks] (ii) Determine, using Mohr's circle or otherwise, the magnitude of the principal stresses acting on a soil element X located near the horizontal failure shear plane (dashed line) as shown on Figure Q-4. [6 marks] DX Figure Q-4 AV cohesionless sand (b) The same cohesionless sand of part (a) is next subjected to consolidated drained (CD) triaxial testing in compression. The sample fails when the axial pressure (which includes the confining pressure) acting on the sample is 408 kN/m². What is the confining (cell) pressure used in this CD test? [5 marks] (c) The same cohesionless sand of part (a) is next subjected to consolidated undrained (CU) triaxial testing in compression. The sample fails when the deviator pressure acting on the sample is 153 kN/m² and the excess pore pressure at failure is 136.6 kN/m². What is the confining (cell) pressure used in this CU test? [7 marks]
Expert Answer:
Answer rating: 100% (QA)
a i Using the equation f n tan Where f is the shear strength 156 kPa is the friction angle 33 Ta... View the full answer
Related Book For
Chemistry The Central Science
ISBN: 978-0321696724
12th edition
Authors: Theodore Brown, Eugene LeMay, Bruce Bursten, Catherine Murphy, Patrick Woodward
Posted Date:
Students also viewed these accounting questions
-
6. Edna's Laundry Services just completed pro forma statements using the percentage-of-sales approach. The pro forma shows a projected external financing need of -$5,500. Interpret this figure. What...
-
Managing Scope Changes Case Study Scope changes on a project can occur regardless of how well the project is planned or executed. Scope changes can be the result of something that was omitted during...
-
It is often said that the Fama French three factor model is a risk model. Explain why this might be the case. 15. Explain why the beta of a portfolio (or stock) doesn't matter under the Fama French...
-
On 1 January 2022, ABC Company issued 10,000 shares of common stock for $100,000. On 31 December 2022, the company declared and paid dividends of $10,000. Calculate the earnings per share and the...
-
For each account listed below, indicate whether it generally will have debit entries only, credit entries only, or both debit and credit entries: (a) Cash (b) Accounts Receivable (c) Dividends (d)...
-
a. A lock can be opened using only the number 4351. State whether this is a permutation or a combination of digits, giving a reason for your answer. b. There are twenty numbered balls in a bag. Two...
-
An asset is classified as current if it a. was purchased within the last six months. b. will become cash, be sold, or be used up within 12 months. C. was purchased with cash. d. will last longer than...
-
Kimble and Sanchez, CPAs, offer three types of services to clients: auditing, tax, and small business accounting. Based on experience and projected growth, the following billable hours have been...
-
(3) Prove that the law of motion of capital per effective worker in the Solow-Swan model with labor-augmenting technology is = - kts f(kt) (8+n+g)kt, Kt where yt = f(kt) = F(kt, 1) = F( KK, 1), kt =...
-
Janice Morgan, age 24, is single and has no dependents. She is a freelance writer. In January 2021, Janice opened her own office located at 2751 Waldham Road, Pleasant Hill, NM 88135. She called her...
-
Post one original reflection on the question above and two separate follow up responses to posts made by other students. These 3 posts are required in order to qualify to receive full marks. Posts...
-
An elevator with mass 2000 kg rises with an acceleration of Im.s? What is the tension in the supporting coble?
-
Fred and Naomi married 10 years ago and were initially very happy. Things changed soon after the birth of their daughter Neka. Fred started to go out with his friends every Saturday night, leaving...
-
During a lawsuit, the litigants have an opportunity to evaluate the testimony of witnesses. At what phases or phases of a lawsuit does this occur and how is it accomplished?
-
Amelia X applies for compensation from the fund. She alleges that she paid the Wings of a Dove Travel Agency for a vacation in a four-star hotel, but the hotel turned out to be a two-star hotel. The...
-
Paulson Company issues 9%, four-year bonds, on January 1 of this year, with a par value of $101,000 and semiannual interest payments. Semiannual Period-End (0) January 1, issuance (1) June 30, first...
-
In the figure four particles form a square with edge length a = 4.13 x 102 m. The charges are q=44=1.68 x 10-15 C and q2 = 93=q. (a) What is q if the net electrostatic force on particle 1 is zero?...
-
Write an essay describing the differing approaches of nursing leaders and managers to issues in practice. To complete this assignment, do the following: 1. Select an issue from the following list:...
-
Using solubility guidelines, predict whether each of the following compounds is soluble or insoluble in water: (a) MgBr2 (b) PbI2 (c) (NH4)2CO3 (d) Sr(OH)2 (e) ZnSO4.
-
Separate samples of a solution of an unknown salt are treated with dilute solutions of HBr, H2SO4, and NaOH. A precipitate forms in all three cases. Which of the following cations could the solution...
-
The natural abundance of 3He is 0.000137$. (a) How many protons, neutrons, and electrons are in an atom of 3He? (b) Based on the sum of the masses of their subatomic particles, which is expected to...
-
What is reaction coordinate? What is its significance in chemical reaction?
-
Show that for steady state flow process, \(\Delta H=Q-W_{S}\).
-
An ideal gas \(\left(C_{P}=5, C_{V}=3 ight)\) is changed from \(1 \mathrm{~atm}\) and \(22.4 \mathrm{~m}^{3}\) to \(10 \mathrm{~atm}\) and 2.24 \(\mathrm{m}^{3}\) by the reversible process of heating...
Study smarter with the SolutionInn App