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�� � OSTP Basic Pump Selection Desi�n <br /> UNIVERSITY � <br /> Minnesota Pollution Worksheet OF MINNESOTA � " <br /> Control Agency �,,����„ <br /> 1. PUMP CAPACITY Project ID: v 06.12.13 <br /> Pumping to Gravity or Pressure Distribution: Q craviry �Ressve Selection required <br /> 1. If pumping to gravity enter the gallon per minute of the pump: ��GPM (f0-45 SPm) <br /> 2. If pumping to a pressurized distribution system: 36.0 GPM <br /> 3. Enter pump description: <br /> 2. HEAD REQUIREMENT$ o��reatmmtsystem <br /> 8 point af d�fcharge <br /> A. Etevation Difference ��ft � <br /> th <br /> between pump and point of discharge: S°pP�����\�9 <br /> nlecP�Pe Eleva[ion;•'' ' <br /> B. Distribution Head Loss: C�ft __ {! mne���� <br /> ,m� _-- l _, <br /> C. Additional Head Loss: ��ft(eue to special equipment,ecc.� f , � --------------------------- -------------. <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> Distribution Head Loss - ---- <br /> Gravity Distribution = oft Flow Ra[e ,_ P�'pe Diameter linches� <br /> - -r--- <br /> IGPM) '; t ; 1.25 ' 1.5 2 <br /> �__ - -.. 1-- <br /> Pressure Distribution based on Minimum Average Head 10 � 9.1 � 3.1 i 1.3 , 0.3 <br /> Value on Pressure Distribution Worksheet: i <br /> 12 12.8 ; 4.3 1.8 ( 0.4 <br /> Minimum Avera e Head Distribution Head Loss 14 17.0 I 5.7 2.4 0.6 <br /> lft Sft 16 21.8 i 7.3 3.0 � 0.7 <br /> 2ft 6ft �g � i q.1 � 3.8 ! 0.9 <br /> 5ft �Oft 20 I 11.1 4.6 I 1.t <br /> 25 ! � 16.8 6.9 1 J <br /> D. 1.Supply Pipe Diameter: 2.0 in 30 � ; 23.5 � 9.7 � 2.4 <br /> 35 i � ; 12.9 i 3.2 <br /> 2.Supply Pipe Length: 23 ft qp � ( 16.5 � 4.1 <br /> E. Fridion Loss in Plastic Pipe per 100ft from Table i: 45 20.5 i 5.0 <br /> 50 � � 6.1 <br /> Friction Loss= 3.32 ft per 100ft of pipe 55 ; � � 7.3 <br /> 60 � � 8.6 <br /> F, Determine Equivalent Fipe Length from pump discharge to soil dispersat area discharge 65 I 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fitting loss. Supply Pipe Length �p I I 11.4 <br /> (0.2) X 1.25=Equivalent Pipe Length ; ; <br /> 75 ! ; 13.0 <br /> 85 � � � 16.4 <br /> 23 ft X 1.25 = 28.8 ft 95 � � � ; 20.1 <br /> G. Calculate Supply Friction Loss by multiplying Friction Loss Per 100ft (Line E)by the Equivalent Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> 3.32 ft per 100ft X 28.8 ft - 100 = 1.0 ft <br /> H• Total Head requirement is the sum of the Elevation Dijference (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the <br /> Supply Friction Loss(Line G ) <br /> 7.0 ft + 5.0 ft + ��ft + 1.0 ft = 13.0 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 36.� GPM(Line 1 or Line 2)with at least 13.Q feet of total head. <br /> Comments: <br />