Friction Chart

Friction 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
U.S. GPM	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