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,. - � <br /> ,_ A. Detamine P�P�P�� � , <br /> Gnvitq Distribntion <br /> 1. Minimum suggesbed is 20 gpm <br /> 2. IVlaxianum Sugg�eSbEd iS 45 gpal Pafozalim D4d�arge�ia GPM <br /> Pressure Dish'butio:l het i�ha� . <br /> 3.a. Select nupnber of perfOrabed Lberals 7 32 1 � <br /> b. Select perfOratioat apac�8 s �• 1.Oa 0.56' 0.74 <br /> c. Subtract 2 f�hom the rocic Lyer kngth i5 0.� 0.90 <br /> � , - 2.� 0.80 1.04 <br /> ���-2h= _ <br /> d Determiae tlu numi�er of spues belween perforations. a U,e 1A foot.�ngle hon►�. <br /> �S� P�SP�B s �� ''�s�-� b Use t0 trat for anytliing dse. <br /> e. spaoes+1= pa�o�ulla�aal ` <br /> f. Multiply perforations per laberal by nuanber o£labrrals tc <br /> get total number of perfcirati,ons.� x .�= perFontions. <br /> 8• yes x�r a 8P� • . <br /> SELECTED PUMP CA�ACTTY ��gpm <br /> B.Detcrmine head requi�mbs <br /> 1. Elevation diH�ce between pump aind po�t� discharge. <br /> � . .g � .>. � <br /> 2. If pumping to a pressure distributiaat ayabem,�ive£eet for pregsur� �'°�� <br /> required at munifold if Sn�'iiY�rysbem►zao. <br /> S ket �v��� <br /> � 3. Friction loss ; <br /> a Enter frictiozt loss table widt SPm�P�d�r• H.�.m�uu�« <br /> Read fri�ction loss in feet pa 100 feet f�+o�table(R14). �' <br /> F.L._ �.`� ft./100 ft of pipe _ ...... <br /> . b. Deternnire total Pipe kn6lh f�+oon Ptm�bo diecharge ------------------------------------ <br /> Point Esti�ate bY addit►S ZS Pa'oentb�Pipe let�8th f�fitt�n8 • <br /> loss,or use a fitting loss chart(F-15_fieet). <br /> Equivalent pipe length-i.?5 tia�ea pipe:ler►gth= <br /> � x 1.25=��:.feet - Friction L�s in Plasti�Pi e <br /> c. Calculabe total�rictio�t loss by;nult�plyicig Nominal <br /> fsicbioat loss in h/100 ft by cquivaletwt k�+,�th. _ , . pl�� <br /> � <br /> Total friction loss• ..,�_x � •` � ��+•1�s;�_f� <br /> 4. Total head required is the auan of d�vat�oot�di#6erat�oe, �� 1S" 2" 3" <br /> «� �,. �,�;�-�. <br /> special head�ts.`and bo�at�#i��� <br /> � ; <br /> � + �+ `� 20 �.� o.� o.ii <br /> ?S 3.73 1.11 0.16 <br /> (1) (2� � (3� 30 S.Z3 1.55 0.23 <br /> . . 35 6.96 2� 0.30 <br /> TOTAL HEAD �,/��,,,feet 4Q 8.91 �y4� 0.39 <br /> 45 11.07 3.28 0.48 <br /> _ ... <br /> 50 13.46 3.99 0.58 <br /> C, Pump selection � s 60 o:s2 <br /> 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> �c tni'y�`yr,7 r �+'-,i;W . . . . . .. � <br /> 1. A pump muat be selecbed�tq��at l�st <br /> �{�gpm (S A)with`it kast `"�� �`�^ ,.� ... ,,. <br /> tep _1.,;,.,,.'�., , +�f�otal�eaid(Stiep B). <br />