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• <br /> • OSTP Pump Selection Design UNIVERSITY <br /> Minnesota Pollution Worksheet OF MINNESOTA =:;=::'''''',--f:','')''', <br /> Control Agency <br /> 1. PUMP CAPACITY v 11.05.31 <br /> A. Pumping to Gravity or Pressure Distribution: I 0 Gravity ®Pmssure Selection required <br /> 1. If pumping to gravity enter the gallon per minute of the pump: GPM <br /> 2. Is the pump for the treatment system or the collection system: <br /> 0 Treatment System 0 Collection System Selection required for worksheet to work properly <br /> 3. If pumping to a pressurized treatment system,what part or type of system: <br /> R.5.-,Soil Treatment Unit L Media Filter El Other <br /> 4. It pumping to a pressurized distribution system: I 29.0 GPM <br /> (Line 11 of Pressure Distribution or Line 10 of Non-Level or enter if Collection System) <br /> 2. HEAD REQUIREMENTS <br /> Sod treatment system <br /> 3. Elevation Difference 15 ft <br /> &point of discharge <br /> 151 <br /> between pump and point of discharge: <br /> 11:1-5‘;-:?; ° <br /> NOTE:IF system is an individual subsurface sewage treatment S°pPty __ <br /> system, complete steps 4- 9. If system is a Collection System, Inlet pipe <br /> Elevation <br /> skip steps 4, 5, 7 and 8 and go to Step 10. m I difference <br /> _6 . <br /> 4. Distribution Head Loss: 5 ft <br /> 5. Additional Head Loss: ft (due to special equipment, etc.) hr Friction Loss in Plastic Pipe per 100 ft <br /> Distribution Head Loss (C=130) <br /> Gravity Distribution = Oft Nominal Pipe Diameter <br /> Pressure Distribution based on Minimum Average Head Flow Rate 1 11/4 11/i 2 3 <br /> Value on Pressure Distribution worksheet: (GPM) <br /> 10 9.11 3.08 1.27 0.31 --- <br /> Minimum Average Head Distribution Head Loss 12 12.77 4.31 1.78 0.44 <br /> --- <br /> ift 5ft 14 16.99 5.74 2.36 0.58 <br /> --- <br /> 2ft 6ft <br /> 5ft 10ft 16 --- 7.35 3.03 0.75 0.10 <br /> 18 --- 9.14 3.76 0.93 0.13 <br /> 6. A. Supply Pipe Diameter: 2.0 in 20 --- 11.11 4.58 1.13 0.16 <br /> 25 --- 16.79 6.92 1.71 0.24 <br /> B. Supply Pipe Length: 105 ft 30 9.69 2.39 0.33 <br /> 7. Based on Friction Loss in Plastic Pipe per 100ft from Table I: 35 --- --- 12.90 3.18 0.44 <br /> 40 --- --- 16.52 4.07 0.57 <br /> Friction Loss= 2.23 ft per 100ft of pipe 45 ___ ___ ___ 5.07 0.70 <br /> 8. Determine Equivalent Pipe Length from pump discharge to soil dispersal 50 --- --- --- 6.16 0.86 <br /> area discharge point. Estimate by adding 25%to supply pipe length for 55 --- --- --- 7.35 1.02 <br /> fitting loss. Supply Pipe Length(6.B) X 1.25=Equivalent Pipe Length 60 --- --- --- 8.63 1.20 <br /> 65 --- --- --- 10.01 1.39 <br /> 105 ft X 1.25 = 131.3 ft 70 --- --- --- 11.48 1.60 <br /> 9. 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 /> 2.23 ft per 100ft X 131.3 ft - 100 = 2.9 ft <br />