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 3, Problem 3.4P
Refer to Figure P3.3. Use Eqs. (3.10) and (3.11) to determine the variation of OCR and preconsolidation pressure
FIGURE P3.3
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1. The following figure shows the stress-displacement results of four direct shear tests
under different vertical stresses.
70
60
o'v=10 psi
50
- o'v=20 psi
40
Δσ'ν-40 psi
o'v=80 psi
30
20
10
0.05
0.1
0.15
0.2
0.25
0.3
shear displ. [in]
Based on the results above, develop the Mohr-Coulomb failure envelope. Indicate the
cohesion (c') and calculate the drained friction angle (o').
shear stress [psi]
A line load of q=60kn/m with alpha =300 is placed on a ground surface as shown in figure p4.1.Calculate the increase of pore water pressure at M immediately after application of the load for the cases given below.
(a) z=10m ,X=0m ,v=0.5 ,A=0.45
(b) z=10m, X=2m,v=0.45, A=0.6
9.30 A laminar boundary layer velocity profile is approximated
by the two straight-line segments indicated in Fig. P9.30. Use the
momentum integral equation to determine the boundary layer
thickness, 88(x), and wall shear stress, 7, 7(x). Compare
these results with those in Table 9.2.
8/2
2U U
3
FIGURE P9.30
Chapter 3 Solutions
Principles of Foundation Engineering (MindTap Course List)
Ch. 3 - Prob. 3.1PCh. 3 - Prob. 3.2PCh. 3 - Prob. 3.3PCh. 3 - Refer to Figure P3.3. Use Eqs. (3.10) and (3.11)...Ch. 3 - Prob. 3.5PCh. 3 - Prob. 3.6PCh. 3 - Prob. 3.7PCh. 3 - Prob. 3.8PCh. 3 - Prob. 3.9PCh. 3 - Prob. 3.10P
Ch. 3 - Prob. 3.11PCh. 3 - Prob. 3.12PCh. 3 - Prob. 3.13PCh. 3 - Prob. 3.14PCh. 3 - Prob. 3.15PCh. 3 - Prob. 3.16PCh. 3 - Prob. 3.17PCh. 3 - Prob. 3.18PCh. 3 - Prob. 3.19PCh. 3 - Prob. 3.20PCh. 3 - Prob. 3.21PCh. 3 - Prob. 3.22PCh. 3 - Prob. 3.23PCh. 3 - Prob. 3.24PCh. 3 - Prob. 3.25PCh. 3 - Prob. 3.26PCh. 3 - Prob. 3.27PCh. 3 - Prob. 3.28PCh. 3 - Prob. 3.29PCh. 3 - Prob. 3.30PCh. 3 - Prob. 3.31P
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