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� . _ , <br /> ' Ejj�,2SF.LECTION PRnCEDURE <br /> A. Determine pump capacity: ' <br /> .�+. <br /> Gravity Distrlbudon aro �oRnraH of A �ow►rrEo u►�an� <br /> 1. Mintmum suggested is 600 gallons per hour(10 gpm)to stay ahead of ��.w, <br /> water use rate. <br /> � d� <br /> 2. Maximum sugg�ested for del�very to a drop box of a hon�e system is 2,700 <br /> gallons per hour(45 gpm)to prevent build-up of pressure in drop box. ;�`i,�,,,,,,:,,,,�,�., �� "�°����►rae►k�«�.- <br /> �,...,. .. . �i M1•rro M��w~arl 'i`°�aN <br /> hfla Ita�prN MOri[aMolly <br /> Psessure Distrtbution � �. r�� <br /> 3. a. Select number of perforated laterals � �a• ' , w� ��o�a• <br /> b. Select p erforation s p a c in g: 3 ft. . ��.:...• � r«r�n�:i��.c.� <br /> c. Sub t 2 ft.from the rock layer length. �,:; ��•�a«w uw► °e/eni���� • <br /> ����'2 ft.= 3S•Sft. �•�',����. �..,�;�:;y;;;s:.;;; . <br /> ����s�nnd <br /> d. Determine the number of s�aces between perforations. <br /> Length perf.spacing= 3S�S ft.+ 3 ft._ �1 spaces TAa�.s O�r�tpow►'riav n�nRG�s�nt c.r�t <br /> e. �� spaces+1=,_�rforations/lateral <br /> ' f. MulNply perforations per lateral by number of laterals to t-ra�a rerto�.ao�dt�ca Wu�) <br /> �t total mber of orations. ' , � <br /> � x�_�perforaHons. �" �• <br /> Z <br /> �.a � os6 oaa <br /> g' � X�'��p'Y'. i.�ob o� Qa <br /> 2.S 0.89 1.17 <br /> SELEC`TED PLJMP CAPACITY ��- m 3A o.98 t.28 <br /> �gp 4A 1.13 1.47 <br /> s.o i.� �.6s <br /> B.Determine head requisements: ���A������ntlal sy�e� <br /> 1. Elevation difference between py�np and point of discharge. �����,d���bw�en�s <br /> _�r feet <br /> 2. If pumpIng to a pressure distribudon system,add five feet for pressure <br /> required at manifold <br /> �feet � <br /> 3. FrlcNon loss . I�pe L.en8ch . <br /> � a. Enter frlcHon loss table with gpm and pipe diameter. Po;nt of Diacharge <br /> Read friction loss in feet per 100 feet from table. <br /> F.L._�ft./100 ft of pipe pevadon Difference <br /> b. Uetermtne total pipe length from pump to discharge . p,,,,,p <br /> poin� Add 25 percent to pipe length for fitHng . <br /> 1�or use a Htting loss chart. Equivalent pipe F-18b <br /> length-1.?S dt�s Pipe lettgth a 1.S inch 2.0 inch 3.0 inch <br /> _C�D x 1.25= ' 7s feet gp,,, �uonw��.iaoaor�. <br /> c. Calculate total hiction loss by multiplying <br /> � fricHon loss in ft/100 R by equivalent pipe length. i2 0.9 0.2�8 <br /> . Total triction loss= _ �� x �S- +100=�feet 14 1.28 0.38 <br /> 4. • Total he�d required is the sum of elevatlon difference, 16 1.63 0.48 <br /> s i head uirements,and total fricdon loss. 18 2.03 0.60 <br /> �' ''� 20 2.a� 0.�3 o.ii <br /> ' 23 3.73 I.11 0.16 <br /> �_+ s - + 1.� 30 5.23 1.SS 0.23 <br /> (1) (2) (3c1 � 7.� 2.06 0.30 <br /> 40 11.07 2.64 0.39 <br /> 43 14.73 3.28 0.48 <br /> TOTAL HEAD ��feet SO • 3.99 O.S8 <br /> SS 4.76 0.70 <br /> 60 5.60 0.82 <br /> C. Pwnp selection <br /> 1. A pump nnust be selected to deliver at least S3 gpm (Step A) � ,� <br /> with at least 1�_feet of total head (Step B). <br /> . • • _ <br />