Civil Engineering Reference
In-Depth Information
TABLE 7.3
Summary of Answers for Probs. 7.1 to 7.9
(
N
1
)
60
bl./ft
Cyclic
Settlement,
Settlement,
Earthquake
q
c
1
, MPa
Cyclic stress
resistance
FS
cm
cm
Problem no.
Soil type
a
max
/
g
magnitude
V
s
1
, m/s
ratio (CSR)
ratio (CRR)
CRR / CSR
(Fig. 7.1)
(Fig. 7.2)
7
1
Section 7.2.2
Clean sand
0.40
2
7.7 blows/ft
0.34
0.09
0.26
4.1
3.0
Problem 7.1
Sand—15%
7
1
fines
0.10
2
7.7 blows/ft
0.084
0.14
1.67
0.15
0.15
5
1
Problem 7.2
Clean sand
0.20
4
7.7 blows/ft
0.17
0.14
0.82
4.1
2.9
7
1
Problem 7.3
Clean sand
0.40
2
5.8 MPa
0.34
0.09
0.26
3.6
3.0
7
1
Problem 7.4
Clean sand
0.40
2
185 m/s
0.34
0.16
0.47
2.8
2.1
Problem 7.5
Crushed
7
1
limestone
0.40
2
5.0 MPa
0.34
0.18
0.53
4.2
3.1
7
1
Problem 7.6
Silty gravel
0.40
2
7.5 MPa
0.34
0.27
0.79
3.0
2.2
Problem 7.7
Gravelly
7
1
sand
0.40
2
14 MPa
0.34
0.44
1.29
0.3
1.2
Problem 7.8
Eolian
7
1
sand
0.40
2
7.7 blows/ft
0.34
0.09
0.26
4.1
3.0
7
1
Problem 7.9
Loess
0.40
2
7.7 blows/ft
0.34
0.18
0.53
3.0
2.3
Note:
See App. E for solutions.
