88
SeCtion b
SoFtware Manual
RetuRn to toC
MaCe HydRoMaCe 3000
Product Manual
89
RetuRn to toC
V-notch weir factors
θ, degrees
C
e
(same for all systems of units)
k
h
, ft
k
h
, m
30
0.586
0.007
0.0021
45
0.58
0.005
0.0015
60
0.577
0.0038
0.0012
Parshall flume factors
Width of flume C
(for use with h
a
in feet)
C
(for use with h
a
in meters)
n
(same for cfs or kL/sec)
1-inch
0.338
0.0604
1.55
2-inch
0.676
0.1207
1.55
3-inch
0.992
0.1771
1.55
6-inch
2.06
0.381
1.58
9-inch
3.07
0.535
1.53
1-ft
3.95
0.705
1.55
1.5-ft
5.975
1.067
1.55
2-ft
8
1.429
1.55
3-ft
12
2.19
1.57
4-ft
16
2.96
1.58
5-ft
20
3.75
1.59
6-ft
24
4.49
1.59
7-ft
28
5.31
1.6
8-ft
32
6.14
1.61
10-ft
39.38
7.46
1.6
12-ft
46.75
8.86
1.6
15-ft
57.81
10.96
1.6
20-ft
76.25
14.45
1.6
25-ft
94.69
17.94
1.6
30-ft
113.13
21.4
1.6
40-ft
150
28.4
1.6
50-ft
186.88
35.4
1.6
appendix a - Flume/weir coefficients
