Table 5 Liquefaction exposure assessment statement of SSS of Otuasega Town, Bayelsa State.

From: Seismic site characterization baseline data for microzonation and site response analysis of Otuasega Town, Bayelsa State, Niger Delta region of Nigeria

Boring data

Conditions during drilling

CORR. RESIST. CRR7.5 CRR

Elev. of sample (m.)

Boring sample depth (m.)

Standard Penetration Test (SPT) N value (BLOWS)

% Fines < #200

Plast. index PI

Liquid limit LL

Moist. content wc (%)

Effective

Corr. Standard Penetration Test (SPT) N value (N1)60

Equiv. CLN. sand standard penetration test (SPT) N value (N1)60cs

Unit wt. (kN/m3)

Vert. STRESS (kPa)

1.5

1.5

5

30

22

48

27.5

0.130

0.195

28.316

37.392

0.023

2.35

0.85

7

34

22

46

25.1

0.117

0.119

18.512

26.928

0.336

3.85

1.5

5

48

22

49

30.5

0.124

0.200

39.091

51.909

0.324

5.35

1.5

7

46

23

52

31.5

0.123

0.200

33.582

45.299

0.242

6.85

1.5

9

42

25

53

32.8

0.126

0.200

44.063

57.876

0.382

7.2

0.35

5

38

25

48

32.3

0.121

0.060

28.316

38.980

0.083

8.7

1.5

12

8

15

36

23.5

0.130

0.210

64.691

65.806

0.451

9.65

1.5

16

6

14

33

23.3

0.132

0.210

73.932

74.309

0.521

10.9

1.25

22

2

14

37

24.2

0.133

0.177

81.169

81.169

0.575

12.4

1.5

28

18

13

31

20.5

0.137

0.211

110.858

121.449

0.883

13.9

1.5

34

15

12

28

20.1

0.135

0.211

97.001

104.164

0.752

15.4

1.5

30

12

8

29

19.8

0.134

0.211

87.763

92.087

0.660

16.9

1.5

33

18

9

38

19.3

0.137

0.211

108.549

118.986

0.865

18.4

1.5

30

18

12

39

20.8

0.137

0.211

108.549

118.986

0.865

19.15

0.75

29

13

11

39

21.3

0.134

0.110

85.807

90.860

0.651

20.65

1.5

20

36

17

35

27.8

0.130

0.208

64.738

82.685

0.587

22.15

1.5

23

33

16

35

28.3

0.132

0.208

0.000

4.882

0.071

23.65

1.5

20

38

14

38

26.9

0.132

0.208

76.298

96.558

0.694

25.15

1.5

22

42

12

39

26.5

0.131

0.208

69.362

88.234

0.630

26.65

1.5

20

28

10

35

27.3

0.130

0.208

64.738

78.244

0.552

27.85

0.85

14

26

12

38

27.7

0.127

0.125

0.000

4.388

0.068

29.35

1.5

18

0.5

NP

NP

13.8

0.129

0.209

0.000

0.000

0.049

30

0.65

10

0.6

NP

NP

12.7

0.130

0.099

0.000

0.000

0.049

Back to article page