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 15.12P
(a)
To determine
Find the required thickness of ties.
(b)
To determine
Find the required maximum length of ties.
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Students have asked these similar questions
A reinforced-earth retaining wall is to be 10 m high. The following data are given:
y₁=16.0 kN/m³, ₁’=34°,
Y2=15.5 kN/m³, 2²=25°,
C₂ = 30 kN/m²
Backfill properties:
In-situ soil:
Reinforcement:
Vertical spacing, Sv=1 m,
Horizontal spacing, SH-1.25 m,
Width of reinforcement =120 mm,
(a)
In situ soil
72; 42; 02
fy=
= 260 MN/m², u²=25°,
Factor of safety against tie pullout and breaking = 3.0
Determine:
a) required thickness of ties
b) required maximum length of ties
c) factor of safety against overturning, and sliding.
ba
q/unit area
7
2= NSV
45 + ₁/2
Sv
Sy
-Sy
Sv
Sy
Sy
H
Sand
71
$₁
Please explain
Question 2:
A gravity retaining wall is shown in figure below. Use ô'=2/3¢', and Coulomb's active earth
pressure theory.
Determine:
1. Factor of safety against overturning;
2. Factor of safety against sliding;
3. The pressure on the soil at the toe and heel.
Y = 18.5 kN/m³
4i = 32°
cj = 0
Use Yconcrete = 23.58 kN/m³
Note:
For Coulomb method, note that the weight 5 m
of the soil above the back face of the wall is
not taken into account in the resisting
5.7 m
P.
moment.
150
2.83 m -
----- Ph
75°
2.167 m
1.5 m
0.27 m 0.6 m
1.53 m
0.8 m
C'
Y2 = 18 kN/m³
$i = 24°
c = 30 kN/m²
0.8 m
0.3 m
- 3.5 m
%3D
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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- A reinforced concrete retaining wall is proportioned as shown below. There is a water table located H1m beneath the ground surface. Use ultimate bearing capacity of 450 kPa. Based on the figure, the dimensions are given below. Use γc = 24.67 kN/m3 wall thickness = 0.65m footing thickness = 0.55m toe slab length = 2.47m heel slab length = 3.78m ground water table depth = 3.25 H2 = 3.92 The soil parameters are also given below. Take note that there is just one type of soil present here. Bulk unit weight = 16.93 Submerged unit weight = 9.67 Angle of internal friction = 21 If you add the factors of safety for sliding and overturning, what is the sum? Consider friction coefficient μ = 0.77 Please answer this asap. For upvote. Thank you very mucharrow_forwardR2arrow_forwardA 395 mm thick slab supports a 363 mm thick wall carrying uniform service dead load of 211.5 kN/m and service live load of 157.4 kN/m. The base of the wall footing slab is 1.4 m from the ground surface. Design parameters are as follows: Ysoil kN/m, Ycond = 24 kN/m³, q, = 207.92 kPa, f. 27 MPa and f, = 414 MPa. 16.5 Calculate the required center to center spacing of 16 mm bars for flexure. Note: Present the width (B) in multiples of 100 mm and present the exact required spacing in 2 decimal places (do not round off).arrow_forward
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