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OSTP Basic Pump Selection Design <br /> Minnesota Pndution Worksheet UNIVERSITY <br /> Control AgaftV OF MINNESOTA <br /> 1. PUMP CAPACITY Project ID: <br /> Pumping to Gravity or Preswre Distribution: O Ger ® Selection required <br /> 1. If pumping to gravity enter the gallon per minute of the pump: GPM (10-45 Spm) <br /> 2. If pumping to a pressurized distribution system: 36.0 GPM <br /> 3. Enter pump description: <br /> 2. HEAD REQUIREMENTS aao�a <br /> A. Elevation Difference 25 ft <br /> between pump and point of discharge: yaps <br /> S. Distribution Head Loss: ft <br /> C. Additional Head loss: ft(due to specW ewAxy it,etc.) ----------------- ---------=---- <br /> TAW I.Frk thm Lois in Ptmk 1001 <br /> tltsta'lbutlon Floes Rate � Diameter inches <br /> Gravity Distribution -Oft GPM) 1 1.25 1.5 2 <br /> Pressure Distribution based on AMnimum 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 /> i 14 17.0 5.7 2.4 0.6 <br /> 1ft 5ft 16 21.8 7.3 3.0 0.7 <br /> 2ft Eft 18 9.1 3.8 0.9 <br /> 5ft '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: ft 40 16.5 4.1 <br /> E. Friction Loss in Plastic Pipe per 1008 from Table I: 45 20.5 5.0 <br /> 50 6.1 <br /> Friction Loss= 3.32 ft per 100ft of pipe 55 7.3 <br /> 60 8.6 <br /> F. Determine Equivalent Pipe Length from pump discharge to soil dispersal area discharge 65 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fitting loss. Supply Pipe Length <br /> 70 11.4 <br /> (D1) X 1.25-Equivalent Pipe Length <br /> 75 13.0 <br /> 7 <br /> 236 ft X 1.25 = 295.0 ft 85 6.495 20.1 <br /> G. Calculate Supply Friction Loan by multiplying Friction Lou Per 100ft (Line E)by the Equivalent Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss- <br /> 3.32 ft per 100ft X 295.0 ft 100 9.8 ft <br /> H. Total Mead requirement is the sun of the Elevation Difference (Une A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and <br /> the Supply Friction Loss(Line G) <br /> 25A ft + 5.0 ft + E _ ft + 9.8 ft - 39.B ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 36.0 GPM(Line 1 or Line 2)with at least 39.8 feet of total head. <br /> Comments: <br />