Laserfiche WebLink
� OSTP Basic Pump Selection Design ,�;� � <br /> Minnesota PoUudon Worksheet UN I V ERS ITY <br /> Control OF MINNESOTA �"�-�,``' <br /> 1. PUMP CAPACfTY Project ID: <br /> Pumping to Gravlty or Pressure Dlstribution: Q c�ewry �vress�r�e Selection requtred <br /> 1. If pumping to gravity enter the gallon per minute of the pump: �GPM (10•45 gpm) <br /> 2, If pumping to a pressurized distribution system: 38.0 GPM <br /> 3. Enter pump description: <br /> 2. HEAD REQUIREMENTS •va�d <br /> A. Elevation Difference 16 ft ~ <br /> between pump and point of discharge: <br /> suad'+W"" <br /> � e�;•'. <br /> B. Distribution Head Loss: �ft <br /> - �_-�::. . <br /> ����----� - i <br /> C. Addftional Head Loss: ��ft�dueto specta�eqwpmenc.etc.� ' ---------------•---•--------- •----------... <br /> Table I.P�iction Loss M Plastk Pi e 100tt <br /> Disuibueb� I�Iead 1�oss Row Rate P� Diameter�inches <br /> Gra�vity Dfst.ribut4on � Oft (GPMI 1 1.25 1.5 2 <br /> Pressure Distributbn based on M1Mmum Average Head 10 9.1 3.1 1.3 0.3 <br /> Value on Preswre Distrlbutton Worksheet: 12 12.8 4.3 1.8 0.4 <br /> mum Awra •N�d Distributbn Head I.oss �4 17.0 5.7 2.4 0.6 <br /> 1ft 5ft 16 21.8 7.3 3.0 0.7 <br /> 2tt bft 18 9.1 3.8 0.9 <br /> Sft ��t 20 11.1 4.6 1.1 <br /> 25 16.8 6.9 1.7 <br /> D. 1.Supply Pipe Diameter: 2.0 in 30 23.5 9.7 2.4 <br /> 35 t2.9 3.2 <br /> 2.Supply Pipe Length: 295 ft �p 16.5 4.1 <br /> E. Friction Loss in PlasNc Pipe per t00ft from Table I: 45 20.5 5.0 <br /> � 6.1 <br /> Frictbn Loss= 3.67 ft per 1 OOft ot pipe 55 7,3 <br /> � 8.6 <br /> F. Detertnine Equivalent Pipe Lengtb from pump discharge to soil dispersal area discharge 65 10.0 <br /> point. Estimate by adding 25%to suppty pipe length for fictfng loss. SupAty Pipe Lengrh � �� 4 <br /> (D.?) X 1.25-Equfvnlmt PJpe Length 7g 13.0 <br /> 85 16.4 <br /> 295 ft X 7.25 = 368.8 ft 95 20.1 <br /> G. Calculate Supply Frlction Loss by multiplying Frictlon Loss Per fUOjt (Line E)by the Equfvolent Pipe Length (Line F)and divide by 100. <br /> Supply Friction Loss- <br /> 3.67 ft per 100ft X 368.8 ft • 100 - 13.5 ft <br /> H• Total Head requirement is ihe sum of the Flevotion D(/jerence (Line A),the Distribution Head Loss(Line B),Additional Head Loss(Line C),and <br /> the Suppty Frlction Loss(Une G ) <br /> 16.0 ft « 5.0 ft + �ft . t3.5 ft = 34.5 ft <br /> 3. PUMP SELERION <br /> A pump must be selected to deliver at least 38.Q GPM(Line 1 or Line 2)with at least 34.5 feet of totat head. <br /> Comments: <br />