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Friction
Resistance
Pipe Chart

Friction Resistance Drop Chart


Friction Loss of Water in Feet per 100 Feet of Pipe

U.S.

GPM

1"Pipe 2"Pipe 3"Pipe 4"Pipe 5"Pipe 6"Pipe
Vel Loss Vel Loss Vel Loss Vel Loss Vel Loss Vel Loss
10 3.72 11.7 1.02 0.50 0.45 0.07 - - - - - -
20 7.44 42.0 2.04 1.82 0.91 0.25 0.51 0.06 - - - -
30 11.15 89.0 3.06 3.84 1.36 0.54 0.77 0.13 0.49 0.04 - -
40 14.88 152 4.08 6.60 1.82 0.91 1.02 0.22 0.65 0.08 - -
50 - - 5.11 9.90 2.27 1.36 1.28 0.34 0.82 0.11 0.57 0.04
60 - - 6.13 13.9 2.72 1.92 1.53 0.47 0.98 0.16 0.68 0.06
70 - - 7.15 18.4 3.18 2.57 1.79 0.63 1.14 0.21 0.79 0.08
80 - - 8.17 23.7 3.65 3.28 2.04 0.81 1.31 0.27 0.91 0.11
90 - - 9.19 29.4 4.09 4.06 2.30 1.00 1.47 0.34 1.02 0.14
100 - - 10.2 35.8 4.54 4.96 2.55 1.22 1.63 0.41 1.13 0.17
110 - - 11.3 42.9 5.00 6.00 2.81 1.46 1.79 0.49 1.25 0.21
120 - - 12.3 50.0 5.45 7.00 3.06 1.72 1.96 0.58 1.36 0.24
130 - - 13.3 58.0 5.91 8.10 3.31 1.97 2.12 0.67 1.47 0.27
140 - - 14.3 67.0 6.35 9.20 3.57 2.28 2.29 0.76 1.59 0.32
150 - - 15.3 76.0 6.82 10.5 3.82 2.62 2.45 0.88 1.70 0.36

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ADDRESS
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Lewes, DE 19958

CONTACTS
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Phone: 302-727- 6739