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. OSTP Pump Selection Design - t1NIVERSITY � Minnesota Pollution Worksheet OF MINNESOTA ''� " ControlA ency ,,,`��.� t. PUMP CAPACITY A. Pumping to Gravity or Pressure Distribution: ��a�iN �ressure 1. If pumping to gravity enter the gallon per minute of the pump: ��GPM 2. If pumping to pressure, is the pump for the treatment system or the collection system: �reatment System O Collection Sys�m 3. If pumping to a pressurized treatment system,what part or type of system: � Soil Treatment Unit �:-Media Filter ��Other 4. It pumpmg to a pressurized distnbution system: 17.7 GPM (Line 11 of Pressure Distribution or Line 10 af Non-Level or enter i/CollecNon System) 2. HEAD REQUIREMENTS Soi Ireatmenl system 3. Elevation Difference 6 ft &poin[oi discharge between pump and point of discharge: `"' � 1e�9�h NOTE:IFsystem is an individua(subsurface sewage treatment s°�iP�y�'� system,complete steps 4-9. If system is a Col(ection System, nletpipe skip steps 4, 5, 7 and 8 and go to Step 10. a� yf I{ d ffere�n e• . _�.. ._ I I L. -. .� ' �I- -,: 4. Distribution Head Loss: ��ft + --------------------------- -----------_ 5. Additional Head Loss: �ft(due to special equipment,etc.) Distribution Head Loss Friction Loss in Plastic Pipe per 100 ft Gravity Distribution = Oft (C=130 Nominal Pipe Diameter Pressure Distribution based on Miniinum Average Head FIOW Rdte Value on Pressure Uistribution Worksheet: �GPM� 1 1�/a 1'/z 2 3 Minimum Avera e Head Distribution Head Loss 10 9.11 3.08 127 0.31 --- 1ft Sft 2ft 6ft �2 12.77 4.31 1.78 0.44 --- 5ft i oft �4 16.99 5.74 2.36 0.58 --- 16 7.35 3.03 0.75 0.10 6. A. Supply Pipe Diameter: 2.0 in �g --- 9.'14 3.76 0.93 0.13 B. Supply Pipe Length: 200 ft 20 --- 11.11 4.58 1.13 0.16 25 --- 16.79 6.92 1.71 0.24 7. Based on Friction Loss in Ptastic Pipe per 100ft from Table I: 30 ___ ___ 9.69 2.39 0.33 Friction Loss= 0.89 ft per 100ft of pipe 35 --- --- 12.90 3.18 0.44 40 --- --- 16_52 4.07 0.57 g, Determine Equivalent Pipe Length from pump discharge to soil dispersal 45 ___ ___ ___ 5.07 0.70 area discharge point. Estimate by adding 25%to supply pipe length for fittin loss. Su l Pi e Len th 5.8 X 1.25=E uivalent Pi e Len th 50 --- --- --- 6.16 0.86 S PPY P 3 ( ) 4 P 3 55 --- --- --- 7.35 1.02 200 ft X 1.25 = 250.0 ft 60 --- --- --- 8.63 1.20 9, Calculate Supply Friction Loss by multiplying Friction Loss Per 100ft (Line 6)by 65 --" --- --- 10.01 1.39 Supply Friction Loss= 70 --- --- --- 11.48 '1.60 0.89 ft per 100ft X 250.0 ft - 100 = 2.2 ft