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-- <br /> � <br /> • .;.:_ OSTP Basic Pump Selection Design <br /> � LINIVERSITY �`'� <br /> Minnesota Pollution Worksheet OF MINNESOTA�i <br /> Controi A enc 't\r' <br /> 1. PUMP CAPACITY Project ID: v 06.12.13 <br /> Pumping to Gravity or Pressure Distribution: �Q c,ravity Q vressure Selection required <br /> 1. If pumping to gravity enter the gatlon per minute of the pump: �GPM (10-45 Spm) <br /> 2. If pumping to a pressurized distribution system: 47.0 GPM <br /> 3. Enter pump description: <br /> 2. HEAD REQUIREMENTS 8�po�nto�lduhi:y`e <br /> A. Etevation Difference �ft m <br /> S���y C�n¢\e�0�h <br /> between pump and point of discharge: <br /> nlel P�V� ElevaUon;•'• <br /> B. Distribution Head Loss: �ft I diHerence <br /> C. Additiondl Hedd Lo55: ��ft(due to special equipment�etc.) ----------------------------- ---•--------- <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> Distribution Head Loss Flow Rate Pi e Diameter Iinches) <br /> Gravity Dlstribution = Oft -- --- - - <br /> (GPM) 1 1.25 1.5 2 <br /> _.__. __----- ----- <br /> Pressure D9stribution based on M9nimum Average Head 10 9,1 3,1 1.3 � 0.3 <br /> Value on Pressure Distribution Worksheet: 12 12.8 4.3 1.8 0.4 <br /> Minimum Avera e Head Distributfon Head Loss 14 17.0 5.7 2.4 0.6 <br /> 1ft 5ft �6 21.8 7.3 3.0 0.7 <br /> 2ft 6ft �g 9.1 3.8 0.9 <br /> Sft 1 Oft 20 11.1 4.6 1.1 <br /> 25 16.8 6.9 1.7 <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: 70 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 6.1 <br /> Friction Loss= 5.44 ft per 100ft of pipe 55 7.3 <br /> 60 8.6 <br /> F, Determine Equivolent Pipe Length from pump discharge to soil dispersat area discharge 65 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fitting loss. Supply Pipe Length �p 11.4 <br /> (D.2) X 1.25=Equiva(ent Pipe length 75 13.0 <br /> 85 16.4 <br /> 70 ft X 1.25 = 87•5 ft 95 20.1 <br /> G. Calculdte Supply Friction Loss by multiplying Frictron Loss Per 100ft (Line E)by the Equivolent Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> 5.44 ft per 100ft X 87.5 ft - 100 = 4.8 ft <br /> H• Total 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(Line G ) <br /> 8.0 ft + 5A ft + �ft + 4.8 ft = 17.8 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 4],Q GPM(Line 1 or Line 2)with at least 17,$ feet of total head. <br /> Comments: <br /> I <br />