Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN: 9781305635180
Author: Braja M. Das, Nagaratnam Sivakugan
Publisher: Cengage Learning
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Question
Chapter 15, Problem 15.10P
To determine
Find the factors of safety with respect to overturning and sliding.
Check whether the eccentricity is within the limit.
Find the soil pressures at the toe and the heel.
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The cross section of a proposed concrete retaining wall is shown in Figure 4. The unit weight of the concrete being 24kN/m3. The soil carries a uniformly distributed load of 40kN/m2 at the top. Given c=0, f=32°, gsoil=17.5kN/m3 and µ=0.5.
From the data:
Check the stability of the retaining wall against sliding and overturning
Determine the maximum and minimum pressure under the retaining wall.
Given:
1. Structural Component:
Beam 300 mm x 400 mm
Column 400 mm x 400 mm
Slab thickness 110 mm
2. Dead Load:
Super Imposed dead load = 4.5 KPa (including slab weight)
CHB = 3.11 KPa
3. Seismic Parameter:
Soil Profile - Sb
Closest distance to the source - 10 km
Ductility Coefficient R = 8.0
Seismic Zone Z=0.40
Ct = 0.0731
A. Compute TOTAL LATERAL FORCES in the 2nd floor?
B. Compute LATERAL FORCES in the 3rd floor?
7. Water is acting on the vertical side of a trapezoidal masonry dam 2m wide at the
top, 15m wide at the bottom and 20m high. If the allowable compressive stress at
the toe is 345kPa and neglecting the hydrostatic uplift. Compute the depth of
water. Assume the unit weight of concrete=23.50kN/m³
a. 19.76
b. 18.92
c. 17.43
d. 13.54
8. From the previous problem, compute the Factor of safety against overturming.
a. 3.142
b. 4.578
с. 3.579
d. 9.766
9. From problem #7, compute the factor of safety against sliding. Use the p=0.60
a. 1.609
b. 2.666
c. 1.365
d. 1.252
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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