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��. OSTP Basic Pump Selection Design <br /> U�FIVERSITY �°- ��� <br /> Minnesota Poltution VYorksheet OF MINNESOTA <br /> Controi A enc „�„�.� <br /> 1. PUMP CAPACITY Project ID: ��� 09 22 <br /> Pumping to Gravity or Pressure Distributlon: O �ravtY Q aesw�e Selection required 0 <br /> 1. If pumping to gravity enter the gallon per minute of the pump: �GPM (10-45 qpm) <br /> 2. If pumping to a pressurized distribution system: �GPM <br /> (Line i f oj Preswre qstM6utlon) <br /> i vea�men srste <br /> 8 poin�ol diuharyc <br /> 2. HEAD REQUIREMENTS •m a <br /> A. Elevation Difference �ft �,uM""qa <br /> between pump and point of discharge: ^'°'��° <br /> m Elewtion• <br /> aiflerence, <br /> B. Distribution Head Loss: �ft _.-- =1-- <br /> � � I ----------------------------- ------------- <br /> C. Additional Head Loss: ��ft(due to special equipment,etc.) <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> Distnbution Head Loss Fiow Rate P ei Diameter(inches) <br /> Gravity Distributlon = Oft (GPM) 1 1.25 1.5 2 <br /> Pressure Distribution based on Minimum Average Head 10 I 9.1 3.1 1.3 ! 0.3 <br /> value on Pressure Distrtbution worksheet: 12 � 12.8 4.3 1.8 0.4 <br /> Minimum Avera e Head Distribution Head Loss 14 17.0 5.7 2.4 0.6 <br /> 1ft Sft 16 21.8 7.3 3.0 0.7 <br /> 2ft 6ft 18 9.1 3.8 0.9 <br /> 5ft '1 Oft 20 11.1 4.6 1.1 <br /> 25 16.8 6.9 1 J <br /> D. 1.Supply Pipe Diameter: ��n 30 23.5 9.7 2.4 <br /> 35 12.9 3.2 <br /> 2.Supply Pipe Length: ��ft 40 16.5 ( 4.1 <br /> E. Friction Loss in Plastic Pipe per 100ft from Table I: 45 20.5 5.0 <br /> 50 I 6.1 <br /> 55 � 7,3 <br /> Friction Loss- �ft per 100ft of pipe 60 � 8.6 <br /> F. Determine Equfva(ent Pipe Length from pump discharge to soil dispersal area discharge 65 I 10.0 <br /> point. Estimate by adding 25%to suppry pipe length for fitting loss. Supply Pipe Length 70 i 11.4 <br /> (D.2) X 1.25=Equlva(ent Pipe Length 75 � 13.0 <br /> 85 � 16.4 <br /> �� ft X 1.25 = ��ft 95 � 20.1 <br /> G. Calculate Supply Frfction Loss by multiplying Friction loss Per 100ft (Line E)by the Equiva(ent Plpe Length (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> �ft per 100ft X �ft + 100 = �ft <br /> H- Total Head requirement is the sum of the Elevation Difference (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the <br /> Supply Friction Loss(Line G) <br /> �ft + �-Jft + �ft + ��ft = �ft <br /> 3. PUMP SELECTION <br /> A pianp must be selected to detiver at least GPM(Line 1 or Line 2)with at least feet of total head. <br /> Comments: <br />