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OSTP Basic Pump Selection Design vNl�Eusi��Y <br /> Minnesota Pollution Worksheet OF MINNESOTA <br /> Control A ency <br /> 1. PUMP CAPACITY Project ID: ���•09•22 <br /> Pumping to Gravity or Pressure Distribution: O cravay OO Pressure Selection required 2 <br /> 1. If pumping to gravity enter the gallon per minute of the pump: �GPM (10-45 4Pm) <br /> 2. If pumping to a pressurized distribution system: 29.0 GPM <br /> (Une 77 oJVressure Distribution/ °'"°"^O"'°YS"'"� <br /> x��o��i oi d�sm����� <br /> 2. HEAD REQUIREMENTS <br /> �.,,��«, - <br /> 16 ft 5.,��"��,,,��� <br /> A. Elevation Difference . � <br /> between um and int of dischar e• "�P`n"'F� I j "°"°"°°"/ <br /> P P Po 8 • i � n�rie«��F <br /> B. Distribution Head Loss: C�ft I o " j <br /> I .<-�:r-.. ------------------------- ------------ <br /> C. Additional Head Loss: ��ft(due to special equipment,etc.) <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> Distribution Head Loss <br /> Flo.�r Rate P�pe Diameter iinchesi <br /> Gravity Distribution = Oft <br /> tGPr�i > >.25 �.5 2 <br /> Pressure Distribution based on Minimum Average Head 10 U.i 3.1 1.3 G.3 <br /> Value o� Pressure Distribution Worksheet: �2 12.5 �.3 1.S 0.� <br /> Minimum Avera e Head Distrib�rtion Head Loss �� 17.0 5.7 Z.-� O.o <br /> 1ft Sft 16 21.8 7.3 3.0 0 J <br /> 2ft 6ft lg 9.1 i.8 0.9 <br /> Sft 10ft Zp 11.1 -{.6 1.1 <br /> 25 16.8 6.9 1 J <br /> D. 1. Supply Pipe Diameter. 2.0 in 30 23.5 9.7 2.-� <br /> 35 12.A 3.2 <br /> 2. Supply Pipe Length: 200 ft .}p 16.5 -�.i <br /> E. Friction Loss in Plastic Pipe per 100ft from Table I: `�5 20.5 5.0 <br /> 50 6.1 <br /> Friction Loss= 2.23 ft per 100ft of pipe 55 7•' <br /> 60 S.b <br /> p, Determine Equivalent Pipe Length from pump discharge to soil dispersal area discharge �5 1 C,0 <br /> point. Estimate by adding 25%to supply pipe length for fitting loss. Suppl y Pipe Length �� ��,�} <br /> (D.2) X 1.25=Equivalent Pipe Length 75 1�.0 <br /> 85 16.� <br /> 200 ft X 1.25 = 250.0 ft Q5 2C.1 <br /> G. Calculate Supply Friction Loss by multiplying Friction Loss Per f00ft (Line E)by the Equivalent Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> 2.23 ft per 100ft X 250.0 ft • 100 = 5.6 ft <br /> H. Totol Head requirement is the sum of the Elevation Difference (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the Suppt <br /> Friction Loss(Line G ) <br /> 16.0 ft + 5.0 ft + 5.0 ft + 5.6 ft = 31.6 ft <br /> 3. PUMP SELECT�ON <br /> A pump must be selected to deliver at least 29 GPM(Line 1 or Line 2)with at least 32 feet of total head. <br /> Comments: <br />