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Bearing capacity factors N

Bearing capacity factors N are taken from the following table according to the angle of internal friction φ and angle of deviation of the resultant force from the vertical direction δ:

φ [°]

δ [°]

0

5

10

15

20

25

30

35

40

45

0

Nγ

Nq

Nc

0.00

1.00

5.14

5

Nγ

Nq

Nc

0.20

1.57

6.49

0.05

1.26

2.93

δ’ = 4.9

10

Nγ

Nq

Nc

0.60

2.47

8.34

0.42

2.16

6.57

0.12

1.66

3.38

δ’ = 9.8

15

Nγ

Nq

Nc

1.35

3.94

10.98

1.02

3.45

9.13

0.61

2.84

6.88

0.21

2.06

3.94

δ’ = 14.5

20

Nγ

Nq

Nc

2.88

6.40

14.84

2.18

5.56

12.53

1.47

4.64

10.02

0.82

3.64

7.26

0.6

2.69

4.65

δ’ = 18.9

25

Nγ

Nq

Nc

5.87

10.66

20.72

4.50

9.17

17.53

3.18

7.65

14.26

2.00

6.13

10.99

1.05

4.58

7.68

0.58

3.60

5.58

δ’ = 22.9

30

Nγ

Nq

Nc

12.39

18.40

30.14

9.43

15.63

25.34

6.72

12.94

20.68

4.44

10.37

16.23

2.63

7.96

12.05

1.29

5.67

8.09

0.95

4.95

6.85

δ’ = 26.5

35

Nγ

Nq

Nc

27.50

33.30

46.12

20.58

27.86

38.36

14.63

22.77

31.09

9.79

18.12

24.45

6.08

13.94

18.48

3.38

10.24

13.19

1.60

7.04

8.63

δ’ = 29.8

40

Nγ

Nq

Nc

66.01

64.19

75.31

48.30

52.71

61.63

33.84

42.37

49.31

22.56

33.26

38.45

14.18

25.39

29.07

8.26

18.70

21.10

4.30

13.11

14.43

2.79

10.46

11.27

δ’ = 32.7

45

Nγ

Nq

Nc

177.61

134.87

133.87

126.09

86.20

56.50

32.26

20.73

11.26

5.45

5.22

δ’ = 35.2

Literature:

SP22.13330.2016

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