Appendix B: Calculations For Flow In Partially Filled Pipes - Global Water FP101 User Manual

XI. Appendix B: Calculations for Flow in Partially Filled Pipes
B C B
0.01 0.0013 0.51
0.02 0.0037 0.52
0.03 0.0069 0.53
0.04 0.0105 0.54
0.05 0.0147 0.55
0.06 0.0192 0.56
0.07 0.0242 0.57
0.08 0.0294 0.58
0.09 0.0350 0.59
0.10 0.0409 0.60
0.11 0.0470 0.61
0.12 0.0534 0.62
0.13 0.0600 0.63
0.14 0.0668 0.64
0.15 0.0739 0.65
0.16 0.0811 0.66
0.17 0.0885 0.67
0.18 0.0961 0.68
0.19 0.1039 0.69
0.20 0.1118 0.70
0.21 0.1199 0.71
0.22 0.1281 0.72
0.23 0.1365 0.73
0.24 0.1449 0.74
0.25 0.1535 0.75
0.26 0.1623 0.76
0.27 0.1711 0.77
0.28 0.1800 0.78
0.29 0.1890 0.79
0.30 0.1982 0.80
0.31 0.2074 0.81
0.32 0.2167 0.82
0.33 0.2266 0.83
0.34 0.2355 0.84
0.35 0.2450 0.85
0.36 0.2546 0.86
0.37 0.2644 0.87
0.38 0.2743 0.88
0.39 0.2836 0.89
0.40 0.2934 0.90
0.41 0.3032 0.91
0.42 0.3130 0.92
0.43 0.3229 0.93
0.44 0.3328 0.94
0.45 0.3428 0.95
0.46 0.3527 0.96
0.47 0.3627 0.97
0.48 0.3727 0.98
0.49 0.3827 0.99
0.50 0.3927 1.00
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C
0.4027 H= Height of water; D= Diameter of pipe
0.4127 (in feet)
0.4227
0.4327
0.4426 H/D = Column B
0.4526
0.4625 Read Column C adjacent to your pipe's B
0.4723
0.4822 C x D2 = Filled area, A (sq.ft. )
0.4920
0.5018 A x Average Velocity = Volumetric flow
0.5115 (CFS)
0.5212
0.5308 CFS x 448.83 = Gallons/minute (GPM)
0.5404
0.5499 GPM x 1440 = Gallons/day (GPD)
0.5594
0.5687
0.5780
0.5872
0.5964
0.6054
0.6143
0.6231
0.6318
0.6404
0.6489
0.6573
0.6655
0.6736
0.6815
0.6893
0.6969
0.7043
0.7115
0.7186
0.7254
0.7320
0.7384
0.7445
0.7504
0.7560
0.7612
0.7662
0.7707
0.7749
0.7785
0.7816
0.7841
0.7854
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