Table 1:
Critical length
.
h
(m)
= 120 m
= 500 m
0.1
9.26
4.54
0.2
18.53
9.08
0.3
27.80
13.62
0.4
37.06
18.16
0.5
46.33
22.7
0.6
55.60
27.23
0.7
64.86
31.77
0.8
74.12
36.31
0.9
83.39
40.85
1
92.65
45.39