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� a-��` OSTP Basic Pump Selection Design <br /> Minneso#a Pallution UNI VERSTTY <br /> Control A ency Worksheet OF MINNESOTA �';,��.,�,; <br /> 1. PUMP CAPACITY Project ID: v 12.08.06 <br /> Pumping to Gravity or Pressure Distribution: Q c,rdviry Q press�re Selection required <br /> 1. If pumping to gravity enter the galton per minute of the pump: �GPM (f0-45 gpm) <br /> 2. If pumping to a pressurized distribution system: 36.0 GPM <br /> (Line 11 of Preswre Dlstributton) ff��r,��� <br /> R pam d dncharga <br /> 2. HEAD REQUIREMENTS <br /> �` '...--�' <br /> A. Elevation Difference �ft s"°d"`� _ <br /> between pump and poiot of discharge: "�'p"` ' - p�ro^�� <br /> diHe�dice <br /> B. Distribution Head Loss: �ft <br /> _._..__..._.,_..�....._..r <br /> --------•-------------------- -------------- <br /> C. Additional Head Loss: ft(due to special equipment,etc.) <br /> Tabie I.Fric#ion Loss in Plastic Pipe per 100ft <br /> Distribution Wea�i Loss; <br /> GravSty Distribution = Oft Ftow Rate Pi e Diameter(inches} <br /> (GPM) 1 1.25 1.5 2 <br /> Pressure Distributio� based on Minimum Average Head 10 9.1 3.i 1.3 0.3 <br /> Value on Pressure Distribution worksheet: 12 12,8 4.3 7.8 0.4 <br /> 'IVlinimum Avera e'H��ct Distributlon Head Lcsss 1q 17,0 5.7 2.4 4.4 <br /> 'Ift Sft 16 21.8 7.3 3,0 0.7 <br /> 2ft 6ft �g 9,1 3.8 0.4 <br /> Sft ��t 20 11.1 4.b 1.1 <br /> 25 tb.8 5.9 1.7 <br /> D. 1.Supply Pipe Diameter: 2.0 in 30 23.5 4,7 2.4 <br /> 35 12.9 3.2 <br /> 2.Suppty Pipe Length: 70 ft q0 16.5 4.1 <br /> E. FHctton loss in Plastic P1pe per 100ft from Table I: 45 20.5 5.0 <br /> 50 b.t <br /> Friction Loss= 3.32 ft per 100ft of pipe 55 7.3 <br /> 60 8.6 <br /> F, Detertnine Equlvolent Pipe Length from pump discharge to soit dispersal area discharge 65 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fitting loss. Suppty Pipe Length �Q ��,� <br /> (D.2) X 1.25=Equfvalent Pipe Length 75 13.0 <br /> 85 tb.4 <br /> 70 ft X 1.25 = 87.5 ft 95 20.1 <br /> G. Calculate 5upply Friction Loss by multiplying Friction Loss Per 100ft (Line E)by the Equivnlent Pipe Length (Line F)and divide by 100. <br /> Suppty Friction Loss= <br /> 3.32 ft per 100ft X 87.5 ft + 100 = 2.9 ft <br /> H. Total Head requirement is the sum of the Elevatlon Difference (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and the <br /> Supply Fridion Loss(Line G) <br /> 8.0 ft + 5.0 ft + �ft + 2.9 ft = 15.9 ft <br /> 3. PUMP SELECTION <br /> A pump must be setected to deliver at least 36.� GPM(Line t or Line 2)with at least 15.9 feet of total head. <br /> Comments: <br />