MindTap Engineering, 1 term (6 months) Printed Access Card for Das/Sivakugan’s Principles of Foundation Engineering, 9th
9th Edition
ISBN: 9781337705202
Author: Das, Braja M., SIVAKUGAN, Nagaratnam
Publisher: Cengage Learning
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Chapter 17, Problem 17.3P
To determine
Find the factor of safety of the retaining wall for overturning, sliding, and bearing capacity failure.
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Question 1:
The cross-section of a cantilever retaining wall is shown below.
Calculate the factor of safety with regards to overturning, sliding and bearing capacity (Use Rankine).
Use Yeonerete = 23.58 kN/m³ and k, =k, = 2/3
F10
0.5 m
H =0.458 m
Yi = 18 kN/m³
di=30°
cj=0
H2=6 m
10
1.5 m = D
0.7 m
H3=0.7 m
C
+ 0.7 m + 0.7 m →l+- 2.6 m
9 kN/m³
d'½=20°
cz=40 kN/m²
For the cantilever retaining wall shown, if the F.O.S. (Overturning)= F.O.S. (Sliding),
find:
1. The width B
2. Least value of Ø to make the wall stable against sliding
om
INT
deperst.
B
"S=f(Ø)*
5
of=34 kN/m
+ Yeone:
= 24,"
Sand:
8=17
S=0
Clay!
Øn =
Cu = 63.75
HO
/ kN/m²
Q3) A retaining structure is given in figure. Calculate the factor of safety against sliding. (Ignore tensile crack
behavior inside active part and ground water condition. Take 1.0 m interval step for point load calculation. k₁=
k₂= 0.9).
3.B m
2.C m
Yn: 20.0 kN/m²
D: 2Eº
c: 30 kN/m²
0.5 m
0.5 m
1
3.0 m
5.0 m
Y cone
➜
5A0 KN
Yn: 18.5 kN/m³
c: 18 kN/m²
$: ID º
24.0 kN/m³
Chapter 17 Solutions
MindTap Engineering, 1 term (6 months) Printed Access Card for Das/Sivakugan’s Principles of Foundation Engineering, 9th
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- The cross section of the cantilever retaining wall shown below. Calculate the factor of safety with respect to overturning, sliding, and bearing capacity. Ye = 24 kN/m 0.5m 10° Yi = 18 kN/m³ 1 = 30° C= 0.0 6m 1.5m 0.7m 07m-10.7m- 2.6m Y2 = 19 kN/m $2 = 24° C2 = 40KN/m2arrow_forwardConsider the wall shown below. Dimensions are in meters. sand O' = 30 0.5 0.5 > 1 K Determine the active force acting on the wall. Circle your answer. b. а. Determine the FS for sliding. Circle your answer. Determine the FS for overturning. Circle your answer. d. Determine the FS for overturning if a row of tiebacks is placed 2 meters below the backfill's ground surface. Tieback spacing is 2 meters. The capacity of each tieback is 50 kN. Circle your answer. C.arrow_forwardCompute for the width of the base for the given masonry dam, the hydrostatic uplift varies from 20% hydrostatic pressure at the heel to zero at the toe. The specific gravity of masonry is 2.4. If μ = 0.60 and Factor of Safety against sliding is 1.5arrow_forward
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