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Other
Foundation Engineering
Finite Slopes-Friction Circle Method
For the trial...
Question
For the trial slip circle shown in Figure, Calculate the factor of safety. [Data: weight of the soil = 346 KN/m, unit weight of the soil =
19
K
N
/
m
3
,
C
u
=
20
K
N
/
m
2
]
1.14
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Solution
The correct option is
A
1.14
We know that,
FOS =
R
e
s
i
s
t
i
n
g
m
o
m
e
n
t
A
c
t
u
a
t
i
n
g
m
o
m
e
n
t
=
C
×
l
×
r
W
×
5
.
.
.
(
i
)
Angle =
A
r
c
R
a
d
i
u
s
70
×
π
180
∘
=
l
9
l = 10.995 m
From(i)
FOS =
20
×
10.995
×
9
346
×
5
FOS = 1.14
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1
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