Principles of Foundation Engineering (MindTap Course List)
9th Edition
ISBN: 9781337705028
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Chapter 18, Problem 18.8P
a.
To determine
Estimate the depth till which the sheet pile should be driven, allowing a factor of safety of 1.5 on the passive resistance
b.
To determine
Estimate the load on the tie rods
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46. Consolidation of Clay: Given Exercise Figure 7.4 and
the accompanying information, what is the ultimate
settlement in the clay under the applied load? Note:
1 ft = 0.3048 m; 62.4 lb/ft³ = 1 Mg/m³.
Assuming the sand will not settle, determine the ulti-
mate settlement in the clay using:
Proceeding in steps:
a. Determine the effective stress for the cross section
prior to loading. Show the stresses at depth using
an appropriate diagram.
b. What is Ao' on the clay layer caused by the
imposed load? (Hint: Calculate this for the center
of the clay layer at 5.8 m [19 ft] deep.)
(ft)
0
c. What is the value of eo based on the original poros-
ity of the clay?
d. How much settlement will occur in the clay?
5
H
ΔΗ =· -C log 1+-
1+e
16
22
40'
o'
P= 125 tons
Sand: Yd=105 lb/ft³
Silty sand: Ysat
Clay: Ysat=121 lb/ft³
n = 0.629, C = 0.82
Exercise Figure 7.4
= 127 lb/ft³
GWT
Please I want the solution in less than 15 minutes
Chapter 18 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 18 - Refer to Figure 18.9. A cantilever sheet pile is...Ch. 18 - Prob. 18.2PCh. 18 - Prob. 18.3PCh. 18 - Refer to Figure 18.13. Given L1 = 1.5 m, L2 = 3 m;...Ch. 18 - In Problem 18.4, find the maximum bending moment...Ch. 18 - Prob. 18.6PCh. 18 - Prob. 18.7PCh. 18 - Prob. 18.8PCh. 18 - Refer to Figure 18.23. Given L1=3m, L2=6m,...Ch. 18 - Prob. 18.10P
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- A footing of size 2m×2m transferring a pressure of 200 kN/m², is placed at a depth of 1.5 m below the ground as shown in the figure (not drawn to the scale). The clay stratum is normally consolidated. The clay has specific gravity of 2.65 and compression index of 0.3. 1.5m 1m 1.5 m 200 kN/m² Silty sand Clay Ya =15kN/m³ Y sat = 18kN/m³ Y sat = 17 kN/m³ GWT $0.5 m Dense sand Considering 2:1 (vertical to horizontal) method of load distribution and Y₁ = 10kN/m³, the primary consolida- tion settlement (in mm, round off to two decimal places) of the clay stratum isarrow_forwardA)Plot graphically all the vertical stresses, pore water and effective vertical stresses throughout the depth. B)How would the effective vertical stress value at the midpoint of the clay layer change if the groundwater level increased 2 m? (g = 10 m / s2)arrow_forwardAnd the void ratio for each load increment is shown in the table below. σ₂ (kPa) Void ratio 15 1.66 30 1.65 60 1.64 120 1.52 2- Find Preconsolidation pressure (oc) and compression index (Cc). 240 1.38 480 1.25arrow_forward
- Give the correct option In a drained triaxial test on consolidated clay the stress and angle are as follows: Deviator stress is 20 lb/in2 and friction angle is 21°. Calculate the effective confining pressure at failure?a) 21 lb/in2 b) 22.2 lb/in2 c) 25.4 lb/in 2 d) 17.9 lb/in2arrow_forwardA deposit of sand exhibited the following properties: Angle of internal friction, = 35° Dry unit weight, yd = 17 kN/m³ Saturated unit weight, Ysat = 20.7 kN/m³ will Man 59 2 = F 20- 18.4 What is the shearing strength of the sand along a horizontal plane at a depth of 4 m given that the water table is at a depth of 2.5 m from ground surface? Find the shear strength when the water table rises to the ground surface.arrow_forwardA consolidated-undrained test on a normally consolidate clay yield the following results: Confining Pressure = 151 KPa; Deviator Stress = 187 KPa; Pore Pressure = 71 KPa. Calculate the consolidated undrained friction angle. Please answer this asap. For upvote. Thank you very mucharrow_forward
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