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' Unrve.snv w l4nnwuu <br /> Pump Selection Design ONSITE <br /> SEWAGE <br /> Minnesota Pollution Worksheet TREATMENT <br /> PROGRAM <br /> Control Agenc <br /> 1. PUMP CAPACITY <br /> 1. Pumping to Gravity Distribution <br /> A. Minimum discharge is 10 GPM(15 GPM recommended) GPM <br /> B. Maximum discharge is 45 GPM. <br /> 2. Pressure Distribution-See Pressure Distribution Worksheet <br /> *Individual SSTS O Collection System <br /> Required Flow Rate (Line 12 of Pressure Distribution Worksheet) 31 GPM <br /> C. Distribution to: ❑Soi t Treatment Unit ❑Media Filter O ATU O Other <br /> 2. HEAD REQUIREMENTS <br /> 3. Elevation Difference 5 Ift molds' <br /> between pump and point of discharge: ,, <br /> 4. Distribution Head Loss: ft <br /> nlet pipe Elevation <br /> r dffereMe <br /> Additional Head Loss: ft ---- <br /> (due to special equipment,etc.) -----------------------------i------------- <br /> Distribution Head Loss Friction Loss in Plastic Pipe per 100 ft <br /> Gravity Distribution = Oft C=130 <br /> Pressure Distribution based on Minimum Average Head Nominal Pipe Diameter <br /> Value on Pressure Distribution Worksheet: Flow Rate 1 1y 1% 2 3 <br /> Minimum Avera a Head Distribution Head Loss GPM <br /> 1 ft 5ft 10 9.11 3.08 1.27 0.31 -- <br /> 2ft 6ft 12 12.77 4.31 1.78 0.44 --- <br /> 5ft I Oft 14 16.99 6.74 2.36 0.68 --- <br /> Friction Loss 16 --- 1 7.35 3.03 0.75 0.10 <br /> 18 --- 1 9.14 3.76 0.93 0.13 <br /> 5. A. Supply Pipe Diameter: 2,00 Inches 20 --- 111.11 4.68 1.13 0.16 <br /> 25 --- 16.79 6.92 1.71 0.24 <br /> B. Supply Pipe Length: 400 Feet 30 --- --- 9.69 2.39 0.33 <br /> --- <br /> NOTE:IF system is an individual subsurface sewage treatment system, 35 --- 12.90 3.18 0,44 <br /> complete steps 6, 7 and 8. if system is a Collection System,skip steps 6, 40 --- -- 16.52 4.07 0.57 <br /> 7 and 8 and go to Step 9. 45 --- --- --- 6.07 0.70 <br /> 6. Based on Friction Loss in Plastic Pipe per 100ft from Table I: 50 --- --- --- 6.16 0.86 <br /> 55 --- --- --- 7.36 1.02 <br /> Friction Loss= 2,52 ft per 100ft of pipe 60 --- --- --- 8.63 1.20 <br /> 65 --- --- --- 10.01 1.39 <br /> 7. Determine Equivalent Pipe Length from pump discharge to soil dispersal 70 --- --- --- 11.48 1.60 <br /> area discharge point. Estimate by adding 25%to supply pipe length for <br /> fitting loss. Supply Pipe Length(5.8) X 1.25=Equivalent Pipe Length <br /> 400 ft X 1.25 = 500 ft <br /> 8. Calculate Supply Friction Loss by multiplying Friction Loss Per 100ft (Line 6)by the Equivalent Pipe Length (Line 7)and divide by 100. <br /> Supply Friction Loss= <br /> 2,52 ft per 100ft x D§Eft + 100 = 12.60 ft <br />