Appendix A - Flume/Weir Coefficients - Mace HydroMace 3000 Product Manual

appendix a - Flume/weir coefficients

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