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. _ OSTP Basic Pump Selection Design <br /> Minnesota Pollution Worksheet UNIVERSITY ���� <br /> Contro!A enc OF MINNESOTA 1-�.�' <br /> 1. PUMP CAPACIIY Project ID: <br /> Pumpi�to Gravity or Proswre OisMbutton: �crawty QPreszre Seleciion rcquind . <br /> 1. If pumping to gravity enter the galton per minute of the pump: �GPM (f0-4S 4Pm) <br /> 2. If pumpinq to a pr+essurized distribution system: 38.0 GPM <br /> 3. Enter p�anp description: <br /> 2. HEAD REQUIREMENTS •v�w <br /> A. Elevation Difference 10 ft �,� <br /> between pump and point of discharge: � <br /> � �;-- <br /> B, Dist�ibution Head Loss: �h <br /> C. Additlonal Head Loss: �ft(due wspeaatequiprtienc,ecc.) ------------------•------.... -------------• <br /> Table I.F�iction Loss in Plastic Pi e er t00h <br /> Distributbn HeaO Loss Fiow Rat� P� Diameter(inches) <br /> Gravlty Distribution m Oft •---� <br /> (GPM) 1 1.25 1.5 ' 2 <br /> Pressure Distribution based on MlMmum Average Head 10 9.1 3.1 1.3 0.3 <br /> Value on Pressure Dist�ibution WQrksheet: �2 I y2,g 4,3 1.8 � 0.4 <br /> Mintmun�Avara • Head DlstribartFon Head Loss 14 ` 17.0 SJ 2.4 0.6 <br /> ' 1ft 5ft �6 l 2�,g 7.3 3.0 � 0.7 <br /> 2ft 6ft 18 9.1 3.8 E 0.9 <br /> 5ft 10ft 20 I 11.1 4.6 � 1.1 <br /> '4�' 25 16.8 6.9 i 1.7 <br /> D. t.Supply Pipe Diameter: 2.0 in 30 I 23.5 9.7 I 2.4 <br /> 2.Suppty Pipe Lengths ��ft 3 5 � 12.9 + 3Z <br /> i_�. 40 16.5 I 4.1 <br /> E. Frictton Loss In Plasttc Pipe per 100ft from Table I: 45 20.5 ' S.0 <br /> � � 6.1 <br /> Frictlon Loss• 3.67 ft per 100ft of pipe S5 ' 7.3 <br /> � I � 8.6 <br /> F, Determine Equivcleni Pfpe Length from pump discha�ge to soil dispersal area distharge bg '. 10.0 <br /> point. Estimate by addfng 25%to supply plpe lenpth for fltting loss. Supply Plpe Length �p j <br /> (0.2)X 1.25�Equ7wlent Pipe Length F 11.4 <br /> 75 � 13.0 <br /> 85 j 16.4 <br /> � R X 1.25 = 91.3 it qg 20.1 <br /> G. Calcutate Supply Frictlon Loss by multipEying FrJctfon Lou P�r f00Jt (Line E)by the Equivnlent Plpe length (Line�and divide by 100. <br /> SWP�Y Frictton Loss= <br /> 3.b7 ft per 100ft X 91.3 ft + 100 . 3.4 ft <br /> H. Totot Hecd requirement 1s the sum of the Efevai�on Dlfference (Line A),the Distribution Head L�s(Line B),Additionat Head Loss(Li�e C),and <br /> the Suppty Friction Lass(Ltne G) <br /> 10.0 ft + 5.0 ft + �{t + 3.4 ft - 18.4 ft <br /> 3. PUMP SELECTlON <br /> A pump must be selected to deliver at teast �$�Q GPM(Line t or Line 2)wtth at least �$.4 feet of total head. <br /> Commenu: <br />