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 16, Problem 16.5P
To determine
Find the magnitude and location of the thrust on the wall.
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please, solve question 16.5
question in figure
16.5 The backfill retained by a gravity retaining wall shown in
Figure P16.5 consists of two sand layers, compacted at dif-
ferent densities. The properties of the sand are shown in the
figure. Assuming that the gravity wall does not move later-
ally (i.e., at-rest), determine the magnitude and location of
the thrust on the wall.
FIGURE P16.5
2 m
3 m
Sand 1
y = 17.5 kN/m³; ' = 32°
Sand 2
y = 17.5 kN/m³; ' = 36°
It was found that the backfill against a retaining wall (6 meters in height as shown in
Figure 3) has specify weight y= 16 kN/m³ when its water content w= 5 %, S = 0.12, its
internal friction angle was measured as 30° (take G,= 2.7 and xw = 10 kN/m³).
a. Predict distribution of lateral stress on this retaining wall along its depth in its “at
rest" state, and its resultant force.
b. Rain leads the backfill water content increase to 10% in its upper half, and
saturated in its lower half, find and plot its lateral stress and pore pressures along
its depth in an active state.
Chapter 16 Solutions
Principles of Foundation Engineering (MindTap Course List)
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