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OSTP Basic Pump Selection Design <br /> UNIVERSITY <br /> Minnesota Pollution Worksheet OF MINNESOTA <br /> Control Agency �.� <br /> 1. PUMP CAPACITY Project ID: v 06.12.13 <br /> Pumping to Gravity or Pressure Distribution: Q cravicy �i ctesare Selection required <br /> t. If pumping to gravity enter the gallon per minute of the pump: �GPM (10-45 4pm) <br /> 2. If pumping to a pressurized distribution system: 36.0 GPM <br /> 3. En[er pump tlescnption: <br /> 2. HEAD REQUIREMENTS a�md��m�� <br /> A. Elevation Difference 12 ft " � <br /> between pump and point of discharge: s�y�u <br /> nlet pipe <br /> 6, Distribution Head Loss: ��ft ' w�dence�•'. <br /> C. AdditionalHeadLoss: �ft(duetospecialequipment,ecc.� ............................. .............. <br /> Table I.Friction Loss in Plastic Pipe er 100ft <br /> Distribution Head Loss <br /> Grav;ty �istribution = oft Flow Rate __ Pi e Diameter�inches► <br /> (GPM) 1 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 Fr�ssu:e Distribution Worksheet: �Z �2,$ 4.3 1.8 0.4 <br /> MinJmum Avera e Head Distributlon Head l.oss 14 17.0 5.7 2.4 0.6 <br /> 7rt 5ft �6 2�,g 7.3 3.0 0.7 <br /> 2ft 6ft 18 9.1 3.8 0.9 <br /> �f� 1 Oft <br /> 20 11.1 4.6 1.1 <br /> 25 16.8 6.9 1.7 <br /> D. 1.Supp;y Pipe Diarn�ter: 2.0 in 30 23.5 9J 2.4 <br /> 35 12.9 3.2 <br /> 2.Supply Pipe!engc�� 63 ft 4p 16.5 4.1 <br /> E. Friction Loss in?iastic Pipe per 100ft from Table I: `�5 20.5 5.0 <br /> 50 6.1 <br /> Friction Loss= 3.32 ft per i00ft of pipe 55 7,3 <br /> 60 8.6 <br /> p, Determine Equivelenc Pipe Length frcm pump discharge to soil dispersal area discharge 65 10.0 <br /> point. Estimate�y adding 25%to supply oipe length for fitting loss. Supply Pipe Length 70 I ��'4 <br /> (D.2) X 1.25=cauivalent Pipe Length <br /> 75 ! 13.0 <br /> 63 ft X 1.25 = 78.$ ft 85 16.4 <br /> 95 I 20.1 <br /> G. Calculate Supp(y Friction Loss by multiplying Friction Loss Per f00ft (Line E)by the fquiva(ent Pipe Lengih (Line F)and divide by 100. <br /> Supply Frictio.^.Loss= <br /> '•32 ':?2:".00ft X 78.8 ft + 100 = 2.6 ft <br /> H• Totof Heod requirement is the sum of the Elevotion Difference (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the <br /> Supply Friction Loss(_ine G ) <br /> 1�.0 if; + �-5.0 ft + �ft + 2.6 ft = 19.6 ft <br /> 3. PUMP SELECTIO� <br /> A pumo must be selected to deliver zt least 36.0 GPM(Line 1 or Line 2)with at least 19.6 feet of total head. <br /> Comments: <br />