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, � , t <br /> __ OSTP Pump Selection Design ,_,�� <br /> �' " UNIVERSITY �"�• �- <br /> Minnesota Potlution Worksheet OF MINNESOTA�� ' <br /> Control A enc �"" ti-'�\ti <br /> 1. PUMP CAPACII'Y <br /> A, Pumping to Gravity or Pressure Distribution: Q�rav�ry QPRssure <br /> �------------- -� <br /> 1. If pumping to gravity enter the gallon per minute of the pump: �GPM <br /> 2. If pumping to pressure,is the pump for the treatment systerri or the collection system: <br /> O'frcattn�nt System �Colledion Sysbem <br /> ----------- ------- � <br /> 3. If pumping to a pressurized treatment system,what part or type of system: <br /> �Soil Treatment Unit ❑Media Filter ❑Other <br /> 4. If pumping to a pressurized disEnbution system: 36.0 GPM <br /> � <br /> (Llne 11 of Preswrc Distri6ution or Line f0 of Nnn-Leve[or enter If Colfection System) <br /> 2. HEAD REQUIREMENTS <br /> ni neatmen�syztem <br /> 3. Etevation Difference ��ft a����ara�:�n�me <br /> between pump and point of discharge: �`"` <br /> . .S��G�\e°B�h <br /> NOTE:1F system is an fndividua(wbwrfvice sewage treatment <br /> system,complete steps 4-9. !f rystem is a Co(lec[ion System, nlet pipe Ei�du�,:• <br /> skip steps 4,5,7 and 8 and go to Step f0. m __ a+ne�e��e <br /> ..�._.- <br /> _..�___. �.:;� <br /> 4. Distribution Head Loss: ��ft ----------------------------- -------------• <br /> 5. Additional Head Loss ��ft(due to special equipment,etc.) <br /> Distribution Head Loss Fricfion Loss in Plast�c P�pe per 100 <br /> Gravity Distribution = Oft C=130 <br /> Nominal Pipe Diameter <br /> Pressure Distribution based on Minimum Average Head FIoW Rate <br /> Value on Pressure Distribut9on worksheet: GPM 1 1�/a 1�fz 2 3 <br /> Minirnum Avera e Head Distribution Head Loss 10 9.11 3.08 '1.27 0.31 -- <br /> 1 ft 5ft �Z 12.77 4.31 1.78 0.44 <br /> 2ft 6ft -" <br /> 5ft �Oft 14 16.99 5.74 2.36 0.58 --- <br /> 16 --- 7.35 3.03 0.75 0.10 <br /> 6. A.5uppty Fipe Diameter. 2.0 9n �g ___ 9.14 3.76 0.93 0.13 <br /> B.Supply Pipe Length• 3U ft �Q --- 11.11 4.58 1.13 0.16 <br /> 7. Based on Friction Loss in Plastic Pi 25 -- 16.79 6.92 1.71 0.24 <br /> pe per 100ft from Table I: 30 ___ ___ 9.69 2.39 0.33 <br /> Friction Loss= 3.32 ft per 100ft of pipe 35 --- -- 12.90 3.18 0.44 <br /> 40 -- --- 16.52 4.07 0.57 <br /> a, Determine Equiva(ent Pipe Length from Pump discharge to soil dispersal d,5 __ __ ___ �.07 0.70 <br /> area discharge point. Estimate by adding 25%to supply Pipe length for <br /> fitting loss. Supp(y Pipe Length(5.B) X 1.25=Equivofent Pipe Length 50 -- --- --- 6.16 0.86 <br /> 55 -- --- --- 7.35 1.02 <br /> 30 ft x 1.z5 = 37.5 ft 60 -.- --_ --- 8.63 1.20 <br /> 9. Calculate Supply Frictron Loss by multiplying Friction Loss Per 100ft (L1ne 6)by 65 "' --- --- 10.01 1.39 <br /> Suppty Friction Loss= <br /> 70 -- -- --- 11.48 1.60 <br /> 3.32 ft per�ooft X 37.5 ft + to0 - 1.2 ft <br />