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OSTP Basic Pump Selection Design g. <br /> MinnesotaPollution Worksheet UNIVERSITY � ��,;x <br /> Control Agency <br /> OF MINNESOTA °� "Z-Z�" <br /> 1. PUMP CAPACITY Project ID: v 04.20.2016 <br /> Pumping to Gravity or Pressure Distribution: Gravity <br /> 1. If pumping to gravity enter the gallon per minute of the pump: 20.0 GPM 1�0-45 gpm) <br /> 2. If pumping to a pressurized distribution system: �GPM <br /> 3. Enter pump description: <br /> 2. HEAD REQUIREMENT$ a��,�>�""�o+e�una:9m <br /> A. Elevation Difference �ft � <br /> S.Wp\b�w�0��9`�. <br /> between pump and point of discharge: - <br /> �� ��»� i.� e�a,;�:•-. <br /> B. Distribution Head Loss �ft mn.�.Me <br /> I , - - --- -- - -- - <br /> C. Addi[ionalHeadLoss: �ft(duetospecialequipment,etc.� � F------------ - - <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> Distribution Head Loss <br /> Gravity Distribution = Oft Flow Rdte ____ P_ es) <br /> Pi e Diameter I�nc <br /> (GPM) t 1.25 1.5 � 2 . <br /> Pressure Distribution based on Minimum Average Head 10 9.1 3.1 1.3 0.3 <br /> Value on Pressure Distribution Worksheet_ �2 �2,8 4.3 1.8 0.4 <br /> Minimum Avera e Head Distribution Head Loss �4 17.0 5.7 2.4 0.6 <br /> 1ft 5ft 1b 21.8 7.3 3.0 0.7 <br /> 2ft 6ft 18 9.1 3.8 j 0.9 <br /> 5ft loft 2� I ��,� 4,6 1.1 <br /> 25 16.8 6.9 1 J <br /> D. 1.Supply Pipe Diameter: 2.0 in 30 23.5 9.7 2.4 <br /> 35 12.9 3.2 <br /> 2.Supply Pipe Length: 40 ft 40 16.5 4.1 <br /> E. Friction Loss in Plastic Pipe per 100ft from Table I: 45 I 20.5 5.0 <br /> 50 6.1 <br /> Friction Loss= 1.12 ft per 100ft of pipe 55 � 7.3 <br /> 60 I 8.6 <br /> F, Determine Equivalent Pipe Length from pump discharge to soil dispersal area discharge 65 10.0 <br /> point. Estimate by adding 25q to supply pipe length for fitting loss. Supp(y Pipe Length 70 11.4 <br /> �D.2) X 1.25=Equivalent Pipe length 75 13.0 <br /> 40 ft X 1.25 = 50.0 ft 85 16.4 <br /> 95 i 20.1 <br /> G. Calculate Supp(y Friction Loss by multiplying Friction Loss Per f00jt (Line E)by the Equivolent Pipe Length (Line F)and divide by 100. <br /> Supply Frtction Loss= <br /> 1.12 ft per 100ft X 50.0 ft - 100 = 0.6 ft <br /> H• To[al Heod requirement is the sum of the E(evotion Difference (Line A),the Distnbution Head Loss(Line B),Additional Head Loss(Line C),and <br /> the Supply Friction Loss(Line G ) <br /> 6.0 ft + �ft + �ft � 0.6 ft = 6.6 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 2Q,Q GPM(Line 1 or Line 2)with at least 2�,0 feet of totat head. <br /> Comments: <br />