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� OSTP Pump Selection Design <br /> Minnesota Pollution UNIVERSITY <br /> �ro� �� Worksheet OF MINNESOTA `'�-� <br /> 1. PUMP CAPACITY <br /> A. Pumping to Gravity or Pressure Distribution: O Graviry O Pressure <br /> 1. If pumping to gravity enter the gallon per minute of the pump: �GPM <br /> 2. If pumping to pressure,is the pump for the treatment system or the collection system: <br /> �Treatment System 0 Collection System <br /> 3. If pumping to a pressurized treatment system,what part or type of system: <br /> m Soil Treatment Unit pMedia Filter p Other <br /> 4. If pumping to a pressurized distnoution system: 36.0 GPM <br /> (Line 11 of Pressure Distribution or Line 10 of Non•Level or enter i(Collection System) <br /> 2. HEAD REQUIREMENTS <br /> i ueasmwrc system <br /> 3. Elevation Difference 10 ft ���"T�d�� <br /> between pump and point of discharge: •�" � <br /> NOTE:IF system is an individua(subsurface senroge treatment <br /> sw��"`"�` <br /> system,complete steps 4-9. If system is a Collection System, �pae eievauon%�, <br /> skip steps 4,5, 7 and 8 and go to Step 10. d� <br /> 4. Distribution Head Losr. �ft ----------------------------- <br /> 5. Additionat Head Loss: �ft(due to special equipment,etc.) <br /> Distribution Head Loss nctaon ss m astu pe per <br /> Gravity Distribution = Oft C=130 <br /> Nominal Pipe Diameter <br /> Pressure Distribution based on Minimum Average Head <br /> Value on Pressure Distribution Worksheet: Gp�� 1 1'/� 13�t 2 3 <br /> Minimurr Aversa e Head Distribution Head Loss 10 9.11 3.08 1.27 0.31 --- <br /> 1ft 5ft 12 12.77 4.31 1.78 0.44 <br /> 2ft 6ft '-' <br /> 5ft �pft 14 16.99 5.74 2.36 0.58 -- <br /> 16 -- 7.35 3.03 0.75 0.10 <br /> 6. A. Supply Pipe Diameter. 2.0 in �g � 9.14 3.76 ,0.93 0.13 <br /> B. Supply Pipe Length: 40 ft 20 -- 11.11 4.58 1.13 0.16 <br /> 25 - 16.78 6.92 1.71 0.24 <br /> 7. Based on Friction Loss in Piastic Pipe per 100ft fram Table I: 30 w --- 8.69 2.39 0.33 <br /> Friction loss= 3.32 ft per 100ft of pipe 35 -- -- 12.90 3.15 0.44 <br /> 40 -- --- 16.52 4.07 0.57 <br /> g, Determine Equivolent Pipe Length from pump discharge to soil dispersat 45 � __ _� 5.07 0.70 <br /> area discharge point. Estimate by adding 25%to supply pipe length for <br /> fitting loss. Supply Pipe Lenqth(5.8) X 1.25=Equivalent Pipe Length 5Q - --- -- 6.16 0.86 <br /> 55 � __ __ 7.35 1.02 <br /> 40 ft x �.25 = 50.0 ft 60 -- --- -- 8.63 1.20 <br /> 9. Calculate Supply Friction Loss by multiplying Friction Loss Per f00ft (Line 6)by t 65 � "' -- 10.01 1.39 <br /> �� 11.48 1.60 <br /> Supply Friction Loss= "" � '- <br /> 3.32 ft per 10oft X 50.0 ft - 100 = 1.7 ft <br />