Table 2 List of sample characteristics and the observed shear properties

N

28

28

28

15

Density^a (kg/m³)

 Mean

402

398

399

389

 SD

35

38

31

35

 CV (%)

9

10

8

9

\(E_{\text{fr}}\) (GPa)

 Mean

7.92

7.65

 SD

0.94

0.67

 CV (%)

12

9

Annual ring geometry

 V (mm)

  Mean

55^b

52

52

24

  Min–max

1–134

2–108

1–108

1–72

 H (mm)

  Mean

2^b

3

5

13

  Min–max

0–10

0–11

1–22

2–23

\(G_{\text{dsp}}\) (MPa)

 Mean

57

76

95

114

 SD

35

42

44

37

 CV (%)

62

56

47

33

 5% quantile

17

27

40

61

\(G_{\text{str}}\) (MPa)

 Mean

72

91

109

129

 SD

50

53

48

44

 CV (%)

70

59

44

34

 5% quantile

18

29

46

65

f_r (MPa)

 Mean

1.54

1.83

2.02

2.24

 SD

0.50

0.46

0.45

0.56

 CV (%)

33

25

22

25

 5% quantile

0.89

1.16

1.37

1.47

\(G_{\text{fem}}\) (MPa)

 Mean

48^b

64

73

70

 SD

17^b

17

16

22

 CV (%)

34^b

27

22

31