EBK PRINCIPLES OF GEOTECHNICAL ENGINEER
9th Edition
ISBN: 8220103611718
Author: SOBHAN
Publisher: CENGAGE L
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Question
Chapter 13, Problem 13.24P
a)
To determine
Draw the variation of Rankine’s active pressure on the wall with depth.
b)
To determine
Find the depth
c)
To determine
Find the total active force
d)
To determine
Find the total active force
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Students have asked these similar questions
The following figure shows a section of an anchored retaining wall embedded into a saturated stiff clay layer.
The sand has a unit weight of = 18 kN/m³, c' = 0 kPa and o' = 34º.
The clay has a unit weight of
= 20 kN/m³, c₁ = 80 kPa and = 0°. A uniform pressure of 40 kPa is applied on the soil surface.
The short term stability of the wall is considered in an undrained analysis.
Use the Rankin's theory of lateral earth pressure to determine the active and passive horizontal stresses.
You should apply the requirements of AS 4678 and the partial factors of safety method in estimation of soil pressures.
Assume the soil is in-situ and use a structural classification factor of ₁ = 1.
3m
1m
Water table
1.5m
40 kPa
Not to Scale
Sand
Clay
Ta
Determine the stability of the cantilever gravity retaining wall shown in figure below.
The existing soil is a clay and the backfill is a coarse-grained soil. The base of the wall
will rest on a 50-mm-thick, compacted layer of the backfill. The interface friction between
the base and the compacted layer of backfill is 25.0°. Groundwater level is 8 m below the
base.
1.0 m
Batter
1:20
0.4 m
1.8 m
9, = 20 kPa
8⁰
Ysat = 18 kN/m³
cs = 25°
8 = 15⁰
Backfill
Drainage blanket
Y = 23.5 kN/m³
3 m
Existing
soil
6.1 m
0.9 mi
Ysat = 19 kN/m³
= 35°
% = 25°
An 8 m tall retaining wall holds cohesionless sand with a density and angle of internal friction of 1.85 Mg/m3 and 33°, respectively. If the surface of the backfill slopes upwards at 86° to the vertical, Use Rankine’s conditions to find the force per unit length of the wall and its location for (a) Active State (b) Passive State Please draw the pressure diagram neatly for both cases
Chapter 13 Solutions
EBK PRINCIPLES OF GEOTECHNICAL ENGINEER
Ch. 13 - Prob. 13.1PCh. 13 - Prob. 13.2PCh. 13 - Prob. 13.3PCh. 13 - Prob. 13.4PCh. 13 - Prob. 13.5PCh. 13 - Prob. 13.6PCh. 13 - Prob. 13.7PCh. 13 - Prob. 13.8PCh. 13 - Prob. 13.9PCh. 13 - Prob. 13.10P
Ch. 13 - Prob. 13.11PCh. 13 - Prob. 13.12PCh. 13 - Prob. 13.13PCh. 13 - Prob. 13.14PCh. 13 - Prob. 13.15PCh. 13 - Prob. 13.16PCh. 13 - Prob. 13.17PCh. 13 - Prob. 13.18PCh. 13 - Prob. 13.19PCh. 13 - Prob. 13.20PCh. 13 - Prob. 13.21PCh. 13 - Prob. 13.22PCh. 13 - Prob. 13.23PCh. 13 - Prob. 13.24PCh. 13 - Prob. 13.25PCh. 13 - Prob. 13.26PCh. 13 - Prob. 13.27PCh. 13 - Prob. 13.1CTP
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