Principles of Geotechnical Engineering (MindTap Course List)
9th Edition
ISBN: 9781305970939
Author: Braja M. Das, Khaled Sobhan
Publisher: Cengage Learning
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Chapter 8, Problem 8.4P
To determine
Draw the flow net for flow through the permeable layer and calculate the seepage loss in
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12.36 Figure P12.36 shows a 3 × 5 pile group consisting of
15 concrete piles of 400 mm diameter and 12 m in length.
What would be the maximum load that can be allowed on
the mat with a factor of safety of 3? The piles have a center-
to-center spacing of 1200 mm.
Qall
= ?
Clay
Cu= 60 kN/m²
Clay
Cu= 90 kN/m²
5 m
7 m
2.64
A 2.75-kN tensile load is applied to a test coupon made from 1.6-mm flat steel plate (E = 200 GPa, v = 0.30).
Determine the resulting change in (a) the 50-mm gage length, (b) the width of portion AB of the test coupon,
(c) the thickness of portion AB, (d) the cross-sectional area of portion AB.
2.75 kN
A
12 mm
50 mm
B
2.75 kN
Determine the heel and toe stresses and the factor of safeties for sliding and
overturning for the gravity dam section shown in the figure below for the following
loading conditions:
- Horizontal earthquake (Kh) = 0.1
-
Normal uplift pressure with gallery drain working
- Silt deposit up to 30 m height
- No wave pressure and no ice pressure
Unit weight of concrete = 2.4 Ton/m³ and unit weight of silty water = 1.4 Ton/m³
- Submerged weight of silt = 0.9 Ton/m³
==
- Coefficient of friction = 0.65 and angle of repose = 25°
Solve this question with the presence of gallery and without gallery., discuss
the issue in both cases....
Solve in table
144 m
BO
4m
W
8m
6m 8m
17m
120m
Chapter 8 Solutions
Principles of Geotechnical Engineering (MindTap Course List)
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