The URL can be used to link to this page

Home My WebLink AboutTable of Perforation Discharges in Gallons per Min E-17ps* V''i. E-17 Head TABLE OF PERFORATIOH DISCHARGES 111 CALLOUS PER MINUTE* Perforation diameter (inches) 1/J|9/32 5/16 n/32 1.0"0.56 0.74 0.93 1.15 1.39 1.66 1.5 0.69 0.90 1.14 1.41 1.71 2.03 2.0*^0.80 1.04 1.32 1.63 1.97 2.34 2.5 0.89 1.17 1.47 1.82 2.20 2.62 3.0 0.98 1.28 1 .62 1.99 2.41 2.87 H.O 1.13 1.47 1.07 2.30 2.79 3.31 5.0 1.26 1.65 2.09 2.57 3.12 3.71 •Based on 19.65 Cd^h 1 /2 , where:q = Gpm;C = coefficient of discharge (0.60); d =perforation diameter in inches;h = head in foot ^Use 1.0 foot of head for residential systems. '^Use 2.0 feet of head for cluster systems, other establishments, etc. MAXIMUM ALLOWABLE MUHBER OF PERFORATIONS PER LATERAL _ _ _ _ _ _(10 percent discharge variation) _ _ _ _ _ _ _ __ rerroration spacing in feet 1-1/4" (1.380") 1-1/2" (1.610") 2" (2.067") Pe rforntion diameter*5 1/4"5/16" 3/8"1/4"5/16"3/8"1 /4 "5/16"3/8" 2.5 14 10 3 18 13 10 28 21 16 3.0 13 9 7 17 12 10 26 19 15 3.3 12 9 7 16 12 9 25 19 14 4.0 11 8 6 15 11 9 23 17 13 5.0 10 8 6 14 10 8 22 16 12 "F" FACTORS FOR A PIPE WITH MULTIPLE OUTLETS Humber of Perforations "F" Factor 6 0.432 8 0.409 10 0.396 12 0.387 14 0.380 16 0.376 18 0.372 20 0.370 30 0.360 L...