Laserfiche WebLink
OSTP Basic Pump Selection Design <br /> Urv�veus�TY <br /> MinnesotaPollution Worksheet OF MINNESOTA �" <br /> �o�trol A enc �'�-�� <br /> 1. PUMP CAPAGTY Project ID: 5!19;15 v t 1.09.22 <br /> Pumping to Gravity or Pressure Distribution: � �ra��t, Ci,r vreswre Selection required 2 <br /> 1. If pumpmg to gravity enter the gallon per m�nute of the pump: �GPM i f0�45 gpml <br /> 2. If pumping to a pressunzed distnbution sys[em: 36.0 GPM <br /> �Line 11 0l P�essure Oistributionl "•+�^'•^'�+^' <br /> a�w��a oi e,una« <br /> 2. HEAD REQUIREMENTS <br /> ��r <br /> A. Elevadon Difference 23 ft '""',Y�� - <br /> between pump and point of discharge: �"�°�°�. m �`„„01�' <br /> B. Dis[nbution Nead Loss: �ft � ' <br /> � <br /> C. Additional Head Loss: �ft Idue to spedal equipment.etc.i <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> Distribution Head Loss Pi Diameter linchesl <br /> Gravity Distribution = Oft Flo�v Rate Pe <br /> IGPMI t 1.25 1.5 2 <br /> Pressure Distribution based on Minimum Average Head 10 9.7 3.1 1.3 0.3 <br /> Value on Preswre Distribution Worksheet: �2 12,$ 4.3 1.8 0.4 <br /> Minimum Avera e H�d Distribution HQad Loss �4 �7,p 5,7 2.4 0.6 <br /> 1ft 5ft �6 2�,g ' 7.3 I 3.0 0.7 <br /> 2ft 6ft 18 9.1 3.8 0.9 <br /> Sft 10ft Zp ' 11.1 ' 4.6 1.1 <br /> 25 16.8 6.9 1 J <br /> D. 1.Supply Pipe D�ameter. 2.0 1n 30 23.5 9.7 2.4 <br /> 35 12.9 3.2 <br /> 2.Supply Pipe Length: 90 ft 4Q � , 16.5 4.t <br /> E. Friction Loss in Plastic Pipe per t00ft from Table I: 45 i ' 20.5 5.0 <br /> 50 � I 6.1 <br /> Fnction Loss = 3.32 ft per 100ft ot pipe 55 ' I 7.3 <br /> 60 8.6 <br /> p, Determine Equivalent Pipe Length from pump discharge to soil dupersal area discharge 65 10.0 <br /> point. Estimate by adding 25�to suppty pipe length for fitting loss. Supply Prpe Length �p 11.4 <br /> (D.2) X 1.25=Equivalen[Pipe Length 75 13.0 <br /> 90 ft X 1.25 = 112.5 ft 85 16.4 <br /> 95 20.1 <br /> G. Calculate Supply Friction Loss by mutt�ptying Friction Loss Per t00ft Iline E�by the Equivalenf Pipe length ILine F)and divide by 100. <br /> Suppty FncUon Loss= <br /> 3.32 fc Pe��oofc x 112.5 rc � ioo = 3.7 rc <br /> H• Total Head requirement u the sum of[he Elevotion DifJerence Il�ne A1, the Dutnbution Head Loss ILine B1,Additional Head Loss iLine C),and the <br /> Supply Friction Loss ILine G i <br /> 23.0 ft - 5.0 fc - r- tc - 3.7 rc = 31.7 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to det,ver at least 36 GPM ILine t or Line 2)with at least 32 feet of total head. <br /> Comments: <br />