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. OSTP Basic Pump Selection Design UNIVERSITY - '��� <br /> Minneso ta Po l lu tion W o r k s h e e t O F M I NNESOTA�► 1�� <br /> Control Agency <br /> 1. PUMP CAPACITY Project ID: v 06.12.13 <br /> Pumping to Gravity or Pressure Distribution: Q craviry QQ Presave Selection required <br /> 1. If pumping to gravity enter the gallon per minute of the pump: �GPM (10-45 gpml <br /> 2. If pumping to a pressurized distribution system: 38.0 GPM <br /> 3. Enter pump description: <br /> �VeatlT�en[Sy51em <br /> 8 pa�nt of discharge <br /> 2. HEAD REQUIREMENTS <br /> A. Elevation Difference z8 ft `��,,,,e�e°B�" <br /> S�PP <br /> between pump and point of discharge: <br /> nlet p�pe Ekva�ion;• <br /> Citterence <br /> g, Distribution Head Loss: ��ft - <br /> C, Additiondl H2dd Lo55: ��ft(due to special equipment,etc.) � ----------------------------- ------------- <br /> L� <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> --__ _. -. --- <br /> Distribution H�ad Loss Flow Rate ___P? e Diameter linchesl___ <br /> Gravity Distribution = Oft (GPM) 1 1.25 1.5 2 <br /> Pressure Distribution basecl on Minimum Average Head 10 9,1 3.1 1.3 0.3 <br /> Value on Pressure Distribution Worksheet: 12 12.8 4.3 1.8 0.4 <br /> Minimum Avera e Head Distribution Head Loss 14 17.0 5.7 2.4 0.6 <br /> 1ft 5ft 16 21.8 7.3 3.0 0.7 <br /> 2ft 6ft �g 9.1 3.8 i 0.9 <br /> 5ft ��t Zp 11.1 4.6 I 1.1 <br /> 25 16.8 6.9 ' 1.7 <br /> D. 1.Supply Pipe Diameter. 2.0 in 30 23'S 9'� II 2'4 <br /> 35 12.9 3.2 <br /> 2.Supply Pipe Length: 230 ft 40 16.5 I 4.1 <br /> 45 20.5 5.0 <br /> E. Friction Loss in Plastic Pipe per 100ft from Table I: 50 6 � <br /> Friction Loss= 3.67 ft per 100ft of pipe 55 ��3 <br /> 60 I 8.6 <br /> F, Determine Equivolent Pipe Length from pump discharge to soil dispersal area discharge 65 ' 10.0 <br /> point. Estimate by adding 25%to supply pipe length for fitting loss. Suppfy Pipe Length 70 I 11.4 <br /> (D.2) X 1.25=Equivalent Pipe Length 75 i 13.0 <br /> 85 16.4 <br /> 230 ft X 1.25 = 287.5 ft qg i 20.1 <br /> G. Calculate Supply Friction loss by multiplying Friction Loss Per 100ft (Line E)by the Equivolent Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss= <br /> 3.67 ft per 10aft X 287.5 ft 100 = 10.6 ft <br /> H. Totol Heod requirement is the sum of the Elevation Difference (Line A), the Distribution Head Loss(Line B),Additionat Head Loss (Line C),and the <br /> Supply Friction Loss(Line G ) <br /> 28.0 ft + 5.0 ft + ��ft + 10.6 ft = 43.6 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 38,0 GPM(Line 1 or Line 2)with at least 43.6 feet of total head. <br /> Comments: <br />