Civil Engineering Reference
In-Depth Information
Exercise 13.5
During the analysis of a trial slip circle on a soil slope the rotating mass of the soil
was divided into five vertical slices as shown in Fig.
13.33.
The position of the GWT
is also shown.
Slip circle properties:
R = 11 m
= 110°
5
4
3
Soil properties:
c' = 5 kPa
'
= 20.4 kN/m
3
2
1
°
Fig. 13.33
Exercise 13.5.
The following measurements were made:
Slice
b
z
h
w
α
no.
(m)
(m)
(m)
(degrees)
1
2.8
1.0
0
−
20
2
3.4
3.0
0.8
−
12
3
3.4
5.0
2.0
4
4
3.4
6.0
2.4
18
5
3.4
3.4
0.6
48
Determine the factor of safety of the slope using Bishop's conventional method of
analysis.
Answer
1.70
Exercise 13.6
In the stability analysis of an earth embankment the slip circle shown in Fig.
13.34
was used and the following figures obtained:
Slice
Breadth
Weight
α
no.
b (m)
W (kN)
(degrees)
1
5.65
372
−
26
2
5.65
656
−
7
3
5.65
1070
12
4
5.65
1220
30
5
5.65
686
54
