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�;�. OSTP Basic Pump Selection Design <br /> Minnesota Pollution Worksheet UN!V ERS ITY I <br /> Co�tro! nc OF MINNESOTA '�-1.,�" <br /> 1. PUMP CAPACITY Project�D: <br /> Pumping to Gravity or Preswre Distribution: Q cxav�N QQ v�essure Selectio�requircd <br /> 1. If pumping to gravity enter the gallon per minute of the pump: ��GPM /10-45 gpml <br /> 2. If pumping to a pressunzed distribution system: 36.0 GPM <br /> 3. Enter pump description: <br /> 2. HEAD REQUIREMENTS �,���������+�v� <br /> 6{�rt oi��ch�. <br /> A. Elevation Difference C�ft � m <br /> - wo�d+ <br /> between pump and point of discharge: _ r"--� ,.-.- <br /> � <br /> B, Distnbution Head Loss C�ft =°�i d� , , �r: <br /> C. Additional Head Loss: �f�(dueto sD�iat equipmenc.etc.) ` -----•------•---------------•- ------------- <br /> ' Tabie I.Frictio� Loss in Piastic P1pe per 100ft <br /> Dfscribution Head Loss ' Pt Diameter(inches) <br /> Gravity Distribution = Oft Flow Rate . _ Pe_ , _ ________ __.__ <br /> IGPAAI t t.25 1.5 2 <br /> __�_.__, �_ :_ ._--- - ---..�..�_. <br /> Pressure Dtstributto� based on Mlnimum Average Head 10 9 1 3.1 1.3 0.3 <br /> Value on Preswre Distrlbution Worksheet: �y 12,g 4.3 1.8 i 0.4 <br /> Mlnlmum Av�ra e Head Dist�ibutlon M�sd Loss 14 17.0 ; 5J ! 2A 0.6 <br /> 2ft 6ft �6 � 21.8 � 7.3 3.0 ', 0.7 <br /> 18 � �i 9.1 3.$� 0.9 <br /> 5ft 10ft 20 � 11.1 � 4.6 ' 1.1 <br /> 25 '. I 16.8 ' 6.9 1.7 <br /> D. t.Suppty P�pe Diameter. 2.0 in 30 ; � 23.5 9J � 2.4 <br /> 35 ' ' 12.9 ; 3.2 <br /> 2.Supply Pipe Length: 20 ft qQ � �; 16.5 � 4.1 <br /> E. Friction Loss in Plastic Pipe per 100ft from Tabte I: 45 � ; 20.5 � 5.0 <br /> 50 { � 6.1 <br /> Fnction Loss= 3.32 ft per t00ft of pipe 55 i ! 7.3 <br /> bo j � s.b <br /> p, Detertnine Equivolen[Pipe Length from pump discharge to soil dispersat area discharge 65 � 10.0 <br /> point. Estimate by adding 255K to supply pipe length for fitting loss. Suppty Pipe Length 79 j � �� 4 <br /> (D.?) X 1.25=Equivalent Pipe Length 75 ? � t3.0 <br /> 85 � � 16.4 <br /> 20 ft X 1.25 = 25.0 ft 95 i 20.t <br /> G. Catculate Suppty Friction Loss by muttiplying Fiiction loss Per f00ft (Line E)by the fquivalen[Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> 3.32 ft per t00ft X 25.0 ft + 100 = 0.8 ft <br /> H. Totol Head requirement is the sum of the Elevation DiJjerence (Line A►, the Distribution Head Loss(line B1,Additional Head Loss(line C),and <br /> the Suppty Fnction Loss(Line G ) <br /> 9.0 ft « 5.0 ft � �ft - 0.8 ft = 14.8 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 36.Q GPM�Line t or Line 2)wtth at least 14�$ feet of total head. <br /> Comments: <br />