MindTap Engineering for Das/Sobhan's Principles of Geotechnical Engineering, SI Edition, 9th Edition, [Instant Access], 1 term (6 months)
9th Edition
ISBN: 9781305971226
Author: Braja M. Das; Khaled Sobhan
Publisher: Cengage Learning US
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Question
Chapter 13, Problem 13.4P
To determine
Find the magnitude of the lateral earth forces
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13.22 Consider the retaining wall shown in Figure 13.38. The height of the wall is 9.75m. and the unit weight of the sand backfill is 18.7kN/m3. Using Coulomb's equation, calculate the active force, Pa, on the wall for the following values of the angle of wall friction. Also, comment on the direction and location of the resultant.
13.1 Figure 13.9 shows a retaining wall that is restrained from yielding.
Determine the magnitude of the lateral earth force per unit length of the wall.
Also, state the location of the resultant, z, measured from the bottom of the wall.
If H = 7m, Ø' = 38°,y = 17 kN/m³,0CR = 2.5
Unit weight = y (or density =
c' = 0
8' (angle of wall friction) = 0
Figure 13.9
Ans. P.
kN
281.55
Z = 2.33m
m.
2- Figure below shows a retaining wall that is restrained from yielding. Determine the magnitude of the lateral earth
force per unit length for the following conditions:
1) At-rest force
2) Passive force
Also, find the location of the resultant, 7, measured from the bottom of the wall.
H (ft)
H1 (ft)
71 (lb/fr)
72 (lb/ft³)
p'ı
q (lb/fr²)
10
5
90
122.4
34
26
100
Surcharge = q
Sand
c{ = 0
Groundwater table
H
Sand
Y2 (saturated unit weight)
có = 0
Frictionless wall
Chapter 13 Solutions
MindTap Engineering for Das/Sobhan's Principles of Geotechnical Engineering, SI Edition, 9th Edition, [Instant Access], 1 term (6 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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- 1- Figure below shows a retaining wall. Determine the magnitude of the lateral earth force per unit length for the following conditions: 1) At-rest force 2) Active force Also, find the location of the resultant, 7, measured from the bottom of the wall. H (ft) y (lb/ft') 15 19 120 Sand Unit weight = y (or density = p) %3D H c' = 0 8' (angle of wall friction) = 0arrow_forwardProblems 13.1 Figure 13.9 shows a retaining wall that is restrained from yielding. Determine the magnitude of the lateral earth force per unit length of the wall. Also, state the location of the resultant, z, measured from the bottom of the wall. If H = 7m, Ø' = 38°,y = 17 kN/m³,0CR = 2.5 %3D %3D Sasd Unit weight = y (or density = p) %3D c =0 8' (angle of wall friction) = 0 Figure 13.9 kN Ans. P, = 281.55, z = 2.33marrow_forwardQ.3. A retaining wall is shown in Figure 2. Determine Rankine’s active force, Pa, per unit length of the wall. Also determine the location of the resultant.arrow_forward
- 1) : Figure-1 shows a 4.5-m-high retaining wall. The wall is restrained from yielding. Calculate the lateral force Po per unit length of the wall. Also, determine the location of the resultant force. Assume that for sand OCR = 1.5.arrow_forward11.7 A retaining wall is shown in Figure 11.22. Determine the Rankine active force, Pa, per unit length of the wall and the location of the resultant for each of the following cases: a. H = 12 ft, H, = 4 ft, y, = 105 lb/ft, y= b. H = 20 ft, H, = 6 ft, y, = 110 lb/ft, y = 126 lb/ft', oi = 34°, d; = 34°, q = 300 lb/ft 122 Ib/ft', i = 30°, = 30°, q = 0 6 Cengage Learning. All Riphts Reserved. May not be copied, scanned, or duplicated, in whole or in part Due to elsctronic rights, some third party content may be suppressed from the eBook and/or eChapter(s). s deemed that any suppressed content does nol maierially affect the overall learning exnerience Ceneaec ernin neerves the right to mrmove additional.contantarrow_forwardA retaining wall is shown in Figure 14.23. Determine Rankine’s active force, Pa, per unit length of the wall and the location of the resultant in each of the following cases:arrow_forward
- Refer to Figure 12.3a. Given: H = 12 ft, q = 0, γ = 108 lb/ft3, c' = 0, and Φ' = 30º. Determine the at-rest lateral earth force per foot length of the wall. Also, find the location of the resultant. Use Eq. (12.4) and OCR = 2.arrow_forwardA retaining wall is shown in Figure 13.41. For each problem, determine the Rankine active force, Pa, per unit length of the wall and the location of the resultant.arrow_forward
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