d(in)

Leff(ft)

Lss (ft)

12Lss/D

36

42

48

54

60

66

72

84

90

83.82

61.58

47.58

37.25

30.18

24.94

20.95

15.39

13.41

85.15

62.91

48.48

38.58

31.51

26.27

22.28

16.72

14.74

28.38

17.97

12.12

8.57

6.30

4.78

3.71

2.39

1.97