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 14, Problem 14.10P
(a)
To determine
Draw the variation of Rankine’s active pressure on the wall with depth.
(b)
To determine
Find the depth up to which, a tensile crack can occur.
(c)
To determine
Find the total active force per unit length of the wall before the tensile crack occurs.
(d)
To determine
Find the total active force per unit length of the wall after the tensile crack occurs.
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A retaining wall supports a horizontal backfill that is composed of two types of soil. The first layer is 4.47m high. It has a unit weight of 16.92kN/m3. The second layer is 5.76m and has a unit weight of18.51 kn/m3. If the angle of friction for both layers is 38 degrees, determine the total active force (kN) acting on the retaining wall per unit. Use stored value. Asnwer on 5 decimal places.
2. Figure 2 shows a non-yielding vertical wall retaining a sandy backfill underlain by clay.
Determine the magnitude of the resultant at-rest force per unit length on the wallI, Pa
Sand
y= 18 kN/m
d'= 34", e 0
OCR = 2
4m
G.W.T
2 m
Clay
Yu=19 kN/m
LL = 36, PL = 14. OCR = 3
Figure 2
Considering that the horizontal thrust from the back of a 5.5 m wide brick wall to the 1 m deep part of the wall is H = 55 kN
a) Find the greatest stress in the base when b = 2 m.b) Find the width b so that there is a shrinkage zone at the base.(Note: unit weight of brick wall ỿ = 24 kN / m3 )
Answer: ϭmax=0,30 Mpa, b=2,23 m
Chapter 14 Solutions
Fundamentals of Geotechnical Engineering (MindTap Course List)
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