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PUMP SEL•ECTION PROCED1IJ� <br /> A. Determine pump capacity: <br /> Gravity Distribution END PFRFOItATION OF A �rrroRnrEo IATERAL <br /> l. Minimum su�ested is 600 gallons per hour(10�pm) to stay ahc.�d of �•n„w c.�« <br /> watcr use rate. . � � ��!�,.--i-'--���,x,=,--� <br /> 2. Maximum su�estcd for dclivery to a drop box of a homc systcm is 2,700 +��� ,r��•��� �`����..-_. <br /> gallons per hour(45�pm) to prevent build-up of pressure in dmp box. .' ' ��„� sab � � ' �'"" °' °•°'•.,"• ``;°'" '"'"'- <br /> Y Y�� 'Mxn'rrn�1 r�w��. Mrsw�rw.N <br /> �� w��n r•' rmin P^CM1 <br /> '^.^--..;,n <br /> T�r p�ri qJr n Mr4,niiun OrNbA I/a�tMlslr <br /> Pressure Distribution �-;���" '��. � �3� � <br /> t� Inm Cer nl.or Tep <br /> 1� _ <br /> 3. a. Sclect numUcr of perfnrated laterals ' :•'�.•r��� �'-`�-=f�--•, �.o�� �.r�. cdo. <br /> LCraM fvi�_Pa4;� ..,'��� el Rx� l.�l.r <br /> b. Sclect perforation spacin� = " ft. -P�,,�a�`,,.,,�o�a .� <br /> c. Subtract 2 ft. From thc rock laycr lcn�th. c�M�Sond Lapr B^��^^� �� �•�•-�� <br /> r r <br /> yr. n� '2 f�. = � � �t. ��►�--+�. . <br /> 0'- �ipin0l So4 P.eM�iy $cnrll��d <br /> B�lon P�x1np Sand Le�er <br /> d. Dctcrminc thc nt�mbcr of spaces bctwccn perfora�ions. <br /> Length }xrf, sr ;_ _<;�', ft.+ ;' ft.=J�spaccs <br /> e• I�� SpaCcs+ �_perforalionS/latcral T�A'!'^F�L�<FOP.A7'ION DISCIiARCt'" ""M <br /> ' f. Multiply perforations per latcral by m�mbcr of 1�'IICT'A�S (O l lcad i cr(oration diome�er(inchcs) <br /> gct total numlxr of perforations. -- �� �� <br /> � b � <br /> ,�� . x �,� ,,,.i= .ti � perforations. _ <br /> 1.Oa 0.5G 074 <br /> � �'�! X ��1 -L 8pn►• �s o.�� 0.90 <br /> ►"'{' 6T 2.Ob O.FSO 1.04 <br /> 2.5 O.A� 1J7 <br /> SELEC?ED PUMP CAPACITY U u n� 3.0 0.98 1.28 <br /> �� 4.0 1.13 1.47 <br /> 5.0 1.26 1.65 <br /> B.Determine head requirements: <br /> 1. Elevation dif(crence betwccr� um and �int of dischar c. aUu 1.0(oot of head for rcsidentlal sys�e�ns. <br /> p p F Fi bUse 2A feet of hcad for other eslnblishments <br /> �_fect <br /> 2. If pumping to a pressure distribution systcm,add five fcct �or pressure <br /> required at manifold <br /> ~ feet <br /> ` _ <br /> 3. FriCtion loss PiPc Lcngth <br /> a. Enter fricNon loss table with gpm and pipe diametrr. � Poinc of Dischargc <br /> Rcad friction loss in feet per 100 fect from tablc. <br /> F.L. = 1 ►•�� ft./100 ft of pip� Elcvation Diffcrcncc <br /> b. Dctermine total pipe lcngth fro,.� pump to di��-harfi� Pump �, .� <br /> point. Add 25 percent to pip�length for (ittin�; <br /> loss,or use a fitting loss chart. Equivalent pipc F•ISb <br /> length- 1.25 Hmes pipe length = �.5 ���n 2.o;n�n 3.0 inch <br /> � � X 1.25 =�_f tt't Spm I'rldim lou�+a 100 ft o(pire <br /> c. Calculate total fricHon loss by multiplying �0 0.69 0.20 <br /> friction loss in ft/]00 ft by equivalcnt pipe length. 12 0.96 0.:8 <br /> Total friction loss= 11 .0 x `', 1 +1(�= y feet 14 1.28 0.38 <br /> 4. Total hcad required is the sum of elcvation diffcrc�uc, lb t.�3 0.48 <br /> special head requirements,and total friction loss. 18 2.03 0.�50 <br /> 2� 2.47 0.73 0.11 <br /> 25 3.73 l.l l 0.�6 <br /> rj + � • '+ [.-� 30 5.23 1.55 0.23 <br /> �1� �Z� :j3�) 35 7.90 2.06 0.30 <br /> 40 11.07 2.G4 0.39 <br /> 45 14.73 3.28 0.48 <br /> TOTAI.HEAD 1 � feet 50 3.99 0.58 <br /> 55 4.76 0.70 <br /> 60 5.60 O.R2 <br /> - �. Pump selection <br /> 1. A pump must be selected to deliver at least �J �� gpm (Step A) <br /> with at least �� feet of total head (Step B). <br />