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�Jniversity of M�nnesota Pump Selection Procedure - 10/25/04 <br /> ��il boxed rectangles must be entered,the rest will be calculated. <br /> �� �ON5{Ta <br /> 1. Determine um ca ac �`�11t� <br /> P P P �5►� T�w�En�r <br /> A. �Sravity Q'tstrobution R�,�ae� � ;.,, - <br /> 1.Minimum required discharge is 1U gpm <br /> 2.Pvlaximum suggesbed d►scharge is 45 gpm <br /> For other establishmenis at least 1096 g�eater than fhe wa�r <br /> supply ra#e,but no fasber than Ihe rate at which effluent wiU flow <br /> out of the disfribution device. <br /> B. Pressure Distribe�tion-see pressure design worksheet soit tceatme�t sysiem <br /> &pa.nt af dischorge <br /> . :FS^4:i•'S� i••• <br /> Selected Pump Capacity: 38 gpm totai pspe <br /> fengfh <br /> 2A.elevaYion <br /> InEeY � difference <br /> �. Determine'Pot�al[Aynamic Head(TDtf} �� :t <br /> __ _� <br /> ------ <br /> �. Eleva6on difFerence betuvezn pump and point of disdiange. . ...._-.._...._----- ; <br /> ��t 6F E ---------------------------------- <br /> B. Specc�aal head requirement?(See Figure-Special Head Requfremer�ts) <br /> �5 feet Speaal Head Requuements <br /> Gravity Distribu6on Oft <br /> C. Friction loss in su�ly pipe Pressure D'�stribufian 5�t <br /> 1. Sel�t pipe diameter �2 in <br /> 2 Enter Fgure E-9 wiin gpm(1A or B)and pipe diameter(C1) <br /> Read friction loss in feet 1�fcet from Figure E-9 E-9 Friction Loss in Plastic Pipe <br /> Friction I�s= 2.64 ft/100 ft of pipe er 1t�ft <br /> nominal <br /> 3.Determine totai pipe lengfh from pump discharge to soil system d�►arge�ink Flow Ra#e i e diameter <br /> Estimate by adding Zb percent to pipe tength for iriction lass in fiftings. m 1.5° 20° 3° <br /> Pi e len th times 1.25=equivalent pipe length 2� : . 2;47 0.7� 0.11 ` <br /> 213 f�x 1.25= 266.25 feet 25 3.73 1.11 0.16 <br /> 3Q_ 5:23 1_55 U.28 <br /> 4.Calculate total fiction loss by multiplying fridion loss(C2) 35 6.96 2.06 0.3 <br /> by the equivalent pipe length(C3)and divide by 90Q. 4Q 8.J1 2.64 Q.39 ' <br /> Friction Loss= 2.64 �1100R X 266.25 ft ! 'i00= 7.0 feet 45 11.07 3.28 0.48 <br /> 50 �3.48 3.99 C1.�8. ' <br /> D. Tohaf head requirement is the sum of elevation difberence(A),speaal 55 4.76 0.7 <br /> head requirements(B),and total fiicbion loss(C4). 6U 5.6 0.82 <br /> _ _ <br /> 22 ft + 5 ft + 7.0 ft 65 _ 6.48 0.95 <br /> 70 T.44 'l.09 <br /> To�Head: 34.0 feet <br /> 3. Pump SelecEion � <br /> 1.A pump must be selecte�to deliver at least 38 gpm(1A or B) <br /> arith at least 34.0 f�et of botal head(2D). <br /> I hereby c�rtiiy that I h�ve completed tl�is work in aecordance wifh alf�pficable ordi�ances,rules and taws. <br /> �signature) 810 (license#) 5/1�J08 (Datel <br /> Page 1 of 1 <br />