Civil Engineering Reference
In-Depth Information
Solution:
Q
= × ×
c N A
b
b
c
b
π
×
0 4
4
.
2
=
180 9 0
×
.
×
=
203 5
.
kPa
Q
= × ×
=
α
c A
s
u
s
0 6 120
.
×
× ×
π
0 4 6
.
×
=
542 6
.
kPa
Q
=
Q Q
+
u
b
s
=
203 5 542 6
746 1
.
+
.
=
.
kPa
Example 10.2:
Drained analysis
A 500 mm diameter bored concrete pile is to be formed in the soil profile shown in
Fig.
10.7.
The ground conditions are as follows:
Granular fill:
γ
=
20 kN/m
3
φ′
=
30°
K
s
=
1.0
Dense gravel:
γ
=
21 kN/m
3
φ′
=
35°
K
s
=
2.0
0
Depth
(m)
Loose granular fill
3
Dense gravel
7
8
Glacial clay
11
Fig. 10.7
Example
10.2.
