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Table 5 The average value of each level of the factor (mm)

From: Characteristics of reducing local scour around cylindrical pier using a horn-shaped collar

Factor

Bottom diameter

Vertical height

Curvature shape index

Factor level

Average maximum scour depth

1

62.6

29.6

49.6

2

58.8

32

42

3

43.6

36

36.2

4

24.6

42.6

33.8

5

5.4

54.8

33.4

Maximum value

62.6

54.8

49.6

Minimum value

5.4

29.6

33.4

Difference (max-min)

57.2

25.2

16.2

Rank

1

2

3