Laserfiche WebLink
PUMP SELECTION PRO F1�t tit F <br /> �. D0ermine r•,mn canarity, <br /> CGravity Distribution - ora PERFORATION OF A PERFORATED LATERAL <br /> 1. Minimum suggested is 600 gallons per hour(10 gpm)to stay ahead of <br /> water use rate. °rai Cover <br /> 2. Maximum suggested for delivery to a drop box of a home system is 2,700 T � <br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. :?' L,omy Sad ,r„ '; .r C061491114 Fabk(e. <br /> �, <br /> )e„r el her or.4,e ee.er.d <br /> r'irA red resin pope.) <br /> we:r.r. Ni4.d /k.rron oi <br /> hlr;jill:i 1�utIl TJUti )Il y�},,•. `v7... G-'. •v.. Ing.Gcp Neer Top r <br /> 3. a. Select number of perforated laterals P11; % <br /> ; w) R« At t•O"Vy«e ra•. <br /> b. Select perforation spacing= 3 ft. �` •' Rock <br /> c. Subtrao 2 ft.from the rock layer length. ""'°'°"""t°aa1id•' <br /> �' C)eo•341"tarty �e)we e/LwNrN <br /> 2 ft. _ft. <br /> Orwool Sol, <br /> d. Determine the number of spaces between perforations. 900"P60c.kV <br /> SorW <br /> « <br /> Length perf.spacing=��ft.+�ft.= a- spaces <br /> e• � spaces+1 = ;k,-�-perforations/lateral TABLE OF PERFORATION DISCHARUFS IN GPM <br /> f. Multiply perforations per lateral by number of laterals to Head Perforationdlameter(inches) <br /> Lettotal number of perforations. <br /> . x -a- = 1,`�_perforations. '7n 14 <br /> 1.0a 056 0.74 <br /> $ pe{, x s= r gpm. 15 0b9 0.90 <br /> 2.Ob 0.80 1.04 <br /> 2.5 0.89 1.17 <br /> SELECTED PUMP CAPACITY 3 gpm 3.0 0.98 1.28 <br /> 4.0 1.13 1,47 <br /> B.Determine head requirements: 5.0 1.26 1.65 <br /> 1. Elevation difference between pump and point of discharge. ause1.0foot ofhead for residential systems. <br /> feet bUse 2.0 feet of head for other establishments <br /> 2. If pumping to a pressure distribution system,add five feet for pressure <br /> required at manifold <br /> 5� feet <br /> 3. Friction loss Pipe Length <br /> a. Enter friction loss table with gpm and pipe diameter. <br /> Read friction loss in feet per 100 feet from table. Point of Discharge <br /> F.L.= a_ . le ft./1o0 ft of pipe f°�`� <br /> b. Determine total t length from pump to discharge Elevadon Difference <br /> P�Pe g Pump )01& <br /> point. Add 25 percent to pipe length for fitting <br /> loss,or use a fitting loss chart. Equivalent pipe <br /> length-1.25 times pipe length= F-18b <br /> (� x 1.25=_ '� feet F1.5ch 2.0 inch 3.0 inch <br /> c. Calculate total friction loss by multiplying gpmalmlou 0_ toottbrpi�friction loss in ft/100 ft by equivalent pipe length. 10 0.20Total friction loss= �� 12 0.28 <br /> x 7 S� +100=� feet 14 .28 0.38 <br /> 4. Total head required is the sum of elevation difference, 16 1.63 0.48 <br /> special head requirements,and total friction loss. 18 2.03 0.60 <br /> 20 2.47 0.73 0.11 <br /> 25 3.73 1.11 0.16 <br /> -�_+ _+�_ 30 5.23 1.55 0.23 <br /> (1) (2) (30 35 7.90 2.06 0.30 <br /> 40 11.07 2.64 0.39 <br /> 45 14.73 3.28 0,48 <br /> TOTAL HEAD .__12_feet 50 3.99 0.58 <br /> 55 4.76 0.70 <br /> C. Pump selection 60 5.60 0.82 <br /> I. A pump must be selected to deliver at least 3C14 gpm (Step A) <br /> with at least 1 feet of total head (Step B). <br />