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� OSTP Pump Selection Design UNIVERStTY Minnesota Pollution Worksheet OF MINNESOTA : '�� ```�`� Control A ency v��ti 1. PUMP CAPACITY v 11.05.31 A. Pumping to Gravity or Pressure Distribution: O��N OO Press�e Selection required t. If pumping to gravity enter the gallon per minute of the pump: ��GPM 2. Is the pump for the treatment system or the collection system: QQ Treatment System � Collection SysOem Selection required for worksheet to work properly 3. If pumping to a pressurized treatment system,what part or type of system: �=.�Soit Treatment Unit C'Media Filter C.�Other 4. It pumping to a pressurized distnbution system: 38.0 GPM (Line 11 of Pressure Distribution or Line 10 of Non-Level or enter i/Cotlection Sys[em) 2. HEAD REQUIREMENTS o��reaiment iy5lem 3. Elevation Difference 7 ft &point ot discharge between pump and point of discharge: �"' � NOTE:IF rystem is an individuol subsurface sewage treatment SaP4�y C��e^9�h system, complete steps 4-9. 1 f system is a Collection System, nlet pipe skip steps 4,5, 7 and 8 and go to Step f0. - 9 diHerene• • __ u F.. ..__.._. .�. :. ��; 4. Distnbution Head Loss ��ft ; ---------------------------- -------------. 5. Additional Head Loss: ��ft(due to special equipment,etc.) h�Friction Loss in Plastic Pipe per 100 ft Distribution Head Loss (C=13Q) Gravity Distribution = Oft Nominal Pipe Diameter Pressure Distribution based on Minimum Average Head Flow Rate 1 1'/s 1lh 2 3 value on Pressure Distribution Worksheet: P 10 9.11 3.08 1.27 0.31 --- Minimum Avera e Head Distribution Head Loss �2 �2,77 4.31 1.78 0.44 --- �ft 5ft �4 16.99 5.74 2.36 0.58 2ft 6ft --- Sft 'I Oft �6 --- 7.35 3.03 0.75 0.10 18 --- 9.14 3.76 0.93 0.13 6. A. Supply Pipe Diameter: 2.0 in 20 --- 1'1.11 4.58 1.13 0.16 25 --- 16.79 6.92 1.71 0.24 B.Supply Pipe Length: 23 ft 30 ___ ___ 9.69 2.39 0.33 7. Based on Friction Loss in Plastic Pipe per 100ft from Table I: 35 --- --- 12.90 3.18 0.44 40 --- --- 16.52 4.07 0.57 Friction Loss= 3.67 ft per 100ft of pipe 45 --- --- --- 5.07 0.70 g, Determine Equivalent Pipe Length from pump discharge to soil dispersal 50 --- --- --- 6.1 fi 0.86 area discharge point. Estimate by adding 25%to suppty pipe length for 55 --- --- --- 7.35 1.02 fitting loss. Supply Pipe Lenqth(6.6) X 1.25=Equivalent Pipe Length 60 --- --- --- 8.63 1.20 65 --- --- --- 10.01 1.39 23 ft X 1.25 = 28.8 ft �p ___ ___ -__ 11.48 1.60 9. Calculate Supp(y Friction Loss by multiplying Friction Loss Per 100ft (Line 6)by the Equivalent Pipe Length (Line 7)and divide by 100. Supply Friction Loss= 3.67 ft per 100ft X 28.8 ft - 100 = 1.1 ft