MindTap Engineering for Das/Sobhan's Principles of Geotechnical Engineering, SI Edition, 9th Edition, [Instant Access], 2 terms (12 months)
9th Edition
ISBN: 9781305971264
Author: Braja M. Das; Khaled Sobhan
Publisher: Cengage Learning US
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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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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
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base.
1.0 m
Batter
1:20
0.4 m
1.8 m
9, = 20 kPa
8⁰
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cs = 25°
8 = 15⁰
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3 m
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0.9 mi
Ysat = 19 kN/m³
= 35°
% = 25°
A fixed retaining wall is backfilled to height of 10m with dry cohesionless sand. The resulting backfill has
a unit weight of 18kN/m³ and a drained angle of internal friction of 36°.
a.
Prior to backfilling, what is the horizontal stress (kPa) at a depth of 10m below the final
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c. If a 200kN/m² surcharge is then applied to the surface of the backfill in the previous item (b),
what will be the effective horizontals stress (kPa) at a depth of 10m below the top of the
backfill?
d.
If the surcharge in the previous item (c) is reduced to 25kPa, what will be the effective
horizontal stress at a depth of 10m below the top of the backfill?
e.
If the surcharge in the previous item (d) is increased to 100kPa, what will be the effective…
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
MindTap Engineering for Das/Sobhan's Principles of Geotechnical Engineering, SI Edition, 9th Edition, [Instant Access], 2 terms (12 months)
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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