Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 15, Problem 15.20P
(a)
To determine
Find the average cohesion
(b)
To determine
Plot the earth pressure envelope.
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Please answer 10.10
Refer to Figure 15.10a. For the braced cut, given H = 8 m; H, = 3 m; y,
17.5 kN/m³; angle of friction of sand, 4' = 34°; H¸ = 5 m; y.
unconfined compression strength of clay layer, q, = 55 kN/m².
a. Estimate the average cohesion (cav) and average unit weight (yav) for the con-
struction of the earth-pressure envelope.
b. Plot the earth-pressure envelope.
18.2 kN/m³; and
Q.civil,.
Chapter 15 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
Ch. 15 - Prob. 15.1PCh. 15 - Prob. 15.2PCh. 15 - Prob. 15.3PCh. 15 - Prob. 15.4PCh. 15 - Prob. 15.5PCh. 15 - Prob. 15.6PCh. 15 - Prob. 15.7PCh. 15 - Prob. 15.8PCh. 15 - Prob. 15.9PCh. 15 - Prob. 15.10P
Ch. 15 - Prob. 15.11PCh. 15 - Prob. 15.12PCh. 15 - Prob. 15.13PCh. 15 - Prob. 15.14PCh. 15 - Prob. 15.15PCh. 15 - Refer to the braced cut in Figure 15.50, for which...Ch. 15 - For the braced cut described in Problem 15.16,...Ch. 15 - Refer to Figure 15.51 in which = 17.5 kN/m3, c =...Ch. 15 - Refer to Figure 15.27a. For the braced cut, H = 6...Ch. 15 - Prob. 15.20PCh. 15 - Determine the factor of safety against bottom...Ch. 15 - Prob. 15.22PCh. 15 - The water table at a site is at 5 m below the...Ch. 15 - Prob. 15.24PCh. 15 - Prob. 15.25CTPCh. 15 - Figure 15.53 below shows a cantilever sheet pile...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, civil-engineering and related others by exploring similar questions and additional content below.Similar questions
- A cutting is made in clay y=20kN/m³, ¤ =0, c = 35 kN/m2. Take FOS= 1.5 and Sn = 0.17. Maximum depth of cutting will be, 5.86 10.29 m 6.86 m 9.29arrow_forwardThe cross section of a braced cut supporting a sheet pile installation in a clay soil is shown in the figure below. Given: H = 12 m , clay = 17.9 kN/m3 , = 0 , C = 75 kN/m2 , and the center-to-center spacing of struts in plan view , S = 3 m.arrow_forwardPlease answer 10.1arrow_forward
- Question 2 Refer to the braced cut shown in Figure Q2, for which y = 17.6 kN/m², 6' = 32°, and c’ = 0. The struts are located 4 m on center-to-center in the plan. Draw the earth-pressure envelope and determine the strut loads at levels A, B, and C. Determine also: a. The sheet-pile section modulus, assume that Gan =170 x 10³ kN/m? b. The required section modulus of the wales at level A; assume that Gan = 173 x 10º kN/m² -5 m- 2 m A 3 m В c = 0 3 m C 1 marrow_forwardA cut is to be made in clay for which the cohesion is 40 kN/m² and = 0. The maximum safe depth of cut will be m. (upto one decimal place) For FOS = 1.5, Take Sn = 0.17 and Y = 20 kN/m³.arrow_forwardGiven: γ =17.5 kN/m3c = 30 kN/m2center-to-center spacing of struts in the plan = 5 m. Determine the sheet-pile section modulus for the braced cut. Use σ all = 170 MN/m2arrow_forward
- A cantilever sheet-pile wall penetrating a granular soil. Here L1=4m L2= 8m and more of the details at the figure belowarrow_forwardA cut was made in a homogeneous clay soil to a depth of 8 m as shown in below Figure. The total unit weight of the soil is 18 kN/m³, and its cohesive strength is 25 kN/m². Assuming a = 0 condition, determine the factor of safety with respect to a slip circle passing through the toe using Swedish circle method. Consider a tension crack at the end of the slip circle on the top of the cut. 8 m R = 12 m 39⁰ 6m Trial slip circle y = 18 kN/m³ c'= 25 kN/m² o'=0arrow_forwardPlease provide complete solution and explanationarrow_forward
- Refer to the braced cut shown below. Given: unit weight = 17 kN/m3, Friction angle = 35degrees, and c = 0. The struts are located at 3 m center-to-center in the plan. a. Draw the earth-pressure envelope and determine the strut loads at levels A, B, and C. b. Determine the sheet-pile section modulus c. Determine the section modulus of the wales at level B Assume that = 170 MN/m2.arrow_forwardA foundation and earth works design office hired you to calculate the buoyancy force generated by the soil profile, indicated as shown in the figure below, in a retaining wall. qd2kN/m²Soft sandY1=(14.0+4.0.Y) kN/m³φ1=20ºC=0kPa Compact sandY2=(18.0+3.0.X) kN/m³φ2=40°C=0kPa h1=2.0mh2=3,Zm Given the information above, draw up the active buoyancy diagram (horizontal stresses) and calculate the value of the resulting buoyancy generated by the imposed vertical stresses and the point of application of their resultant. Considerations:- The efforts of the soil on the wall are of an active nature;⁃ The survey carried out to the depth indicated in the profile did not identify the water table level;⁃ X, Y and Z correspond to the third-to-last, penultimate and last digits of the student's RA, respectively. In this case, X=6 Y=1 Z=0. Where, h2=3.0 m; Y1- (14.0+4+0.1)= 14.4 kN/m³ and Y2=(18.0+3*0.6)= 19.8 kN/m³;- Neglect vertical friction between the wall and the ground.arrow_forwardSituation 9: An 8m deep braced cuts in medium clay is shown. The unit weight = 16.5 kN/m3 and the undrained shear strength Cu = 27.8 kPa. In the plan, the struts are placed at spacing 2.4m center to center. Using Peck's Empirical pressure diagram: m 0.25H 2m В H= 8 m 0.75 H 2|m 2|m Pa = yh - 4Cu %3D 41. Compute the actual load on strut A. A. 124.57 kN C. 116.47 kN B. 153.48 kN D. 162.81 kN 42. Compute the actual load on strut B. А. 33.29 kN C. 28.42 kN B. 40.54 kN D. 35.29 kN 43. Compute the actual load on strut C. A. 127.92 kN C. 131.95 kN B. 210.38 kN D. 199.68 kNarrow_forward
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