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, <br /> OSTP Basic Pump Selection Design UNIVERSITY <br /> ,,� � <br /> Min�esota Pollution Worksheet OF MINNESOTA "?;�,�,\�, <br /> Control A enc <br /> 1. PUMP CAPACITY Project ID: v 11.09.22 <br /> Pumping to Gravity or Pressure Dlstribution: � �rarity QQ creswe Selection required 2 <br /> 1. If pumping to gravity enter the galton per minute of the pump: �GPM (10-45 gpm) <br /> 2. If pumping to a pressurized distribution system: 36.0 GPM <br /> (Une f i oJ Preswrc Otstributton) <br /> m treatmm�sy:ce <br /> 8 pom�ol Cru�arqe <br /> 2. HEAD REQUIREMENTS o o . <br /> �K"°� <br /> A. Elevation Difference �S�ft s,w� <br /> between pump and point of discharge: "�'P'°e <br /> Ekvafbn:�,' <br /> diHerence <br /> B. Distribution Head Losr. ��ft _ ..� ,�.� <br /> r <br /> --------------------------- ---------- <br /> C. Additional Head Loss: �ft(due to special equipment,etc.) <br /> Tabte I.F�iction Loss in Plastic Pipe per 100ft <br /> Distribution H�ad Loss Flow Rate Pipe_Diameter Iinches) <br /> Gravity Distribution = Oft --- <br /> {GPM) 1 1.25 1.5 2 <br /> Pressure DSstributio� based on Minimum Average Head 10 9.1 3.1 1.3 0.3 <br /> Value on Pressure Distribution Worksheet: 12 12,8 I 4.3 1.8 0.4 <br /> Minimum Avara e Head Distribution Head Loss 14 i 17.0 ' SJ 2.4 � 0.6 <br /> tft 5ft �6 ; 21.8 j 7.3 3.0 � OJ <br /> 2ft 6ft 18 i 9.1 3.8 � 0.9 <br /> 5ft 1 Oft 20 � � 11.1 4.6 � 1.1 <br /> 25 16.8 69 � 1 J <br /> D. 1.Suppty Pipe Diameter. 2.0 in 30 ' i 23.5 9.7 2.4 <br /> 2.Supply Pipe Length: 20 ft 35 12.9 3.2 <br /> 40 16.5 4.1 <br /> � <br /> E. FricHon Lozs in Plastic Pipe per 100ft from Tabte I: 45 � 20.5 S.0 <br /> 50 ! I 6.1 <br /> Friction Loss= 3.32 ft per 100ft of pipe 55 7.3 <br /> 60 i 8.6 <br /> F. Determine Equtvalent Pfpe Length from pump discharge to soil dispersal area discharge 65 10.0 <br /> point. Esttmate by adding 25%to suppty pipe length for fitting loss. Suppl y Pipe Length �� � �� 4 <br /> (D.2) X 1.25=Equivalent Pfpe Lcmgth 75 I i 13.0 <br /> 85 i 16.4 <br /> 20 ft X 1.25 m 25.0 ft 95 1 20.1 <br /> G. Calculate Supply Fridion Loss by multiplying Frictlon Loss Per f00ft (Line E)by the Equiwlent Pipe Length (Line F)and divide by 100. <br /> Suppty F�iction LosS= <br /> 3.32 ft per 100ft X 25.0 R + 100 = 0.8 ft <br /> H• Total Head requirement is the sum of the Elevation Difference (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the <br /> Supply Friction Loss(Line G) <br /> 8.0 ft + 5.0 ft + �ft + 0.8 ft = 13.8 ft <br /> 3. PUMP SELECTfON <br /> A pump must be selected to deliver at least 36 GPM(Line 1 or Line 2)with at least 14 feet of total head. <br /> Comments: <br />