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OSTP Basic Pump Selection LN1VL-RS1TY &, <br /> AL- <br /> Minnesota Pollution Design Worksheet OF MINNESOTA -.7- <br /> Control Agency <br /> 1. PUMP CAPACITY Project ID: 22052 v 04.06.2017 <br /> Pumping to Gravity or Pressure Distribution: Pressure <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: 44.0 GPM <br /> 3. Enter pump description: Demand Dosing Soil Treatment <br /> 2. HEAD REQUIREMENTS <br /> A. Elevation Difference 11 ft na <br /> between pump and point of discharge: <br /> Of- <br /> -B. Distribution Head Loss: ft <br /> C. Additional Head Loss: ft(due to special equipment,etc.) F---------------------------- ------------- <br /> Table I.Friction Loss in Plastic Pipe per 100ft <br /> _.._. _ <br /> Distribution Head Loss Pi Diameter (inches) <br /> Gravity biStributinn = Oft FiOw RdLrI'll _,,, <br /> tGPM} 1 125 1 5 ... <br /> Pressure Distribution based on Minimum Average Head 10 9.1. 3.1 1.3 0.3 <br /> value on Pressure Distribution worksheet 12 ( 12.8 1 4,3 I 1.$ 0.4 <br /> Minimum Average Head Distribution Head Loss 14 17.E 5.7 2.4 0.6 <br /> 1ft. 5ft 16 21.8 I 7.3 3.0 0.7 <br /> 2ft 6ft 14 1 9.1 3.8 0.9 <br /> 5ft 1 Oft 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 12.9 3.2 <br /> 2. Supply Pipe Length: 80 ft 40 � 16.5 � 4 <br /> E. Friction Loss in Plastic Pipe per 100ft from Table I: 45 20.5 5.0 <br /> 50 6.1 <br /> Friction Loss= 4.82 ft per 100ft of pipe 55 7.3 <br /> 60 8.6 <br /> F. Determine Equivalent 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. Supply Pipe Length 70 ! 11.4 <br /> (D.2) X 1.25=Equivalent Pipe Length 75 1 13.0 <br /> 80 ft X 1.25 = 100.0 ft 85 16.4 <br /> 95 0.1 <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 /> 4.82 ft per 100ft X 100.0 ft - 100 = 4.T7 ft <br /> H. Total Head requirement is the sum of the Elevation Difference (Line A), the Distribution Head Loss (Line B), Additional Head Loss (Line C),and <br /> the Supply Friction Loss(Line G ) <br /> 11.0 ft + 5.0 ft + F-=ft . 4.8 ft = 20.8 ft <br /> 3. PUMP SELECTION <br /> A pump must be selected to deliver at least 44,0 GPM (Line 1 or Line Z)with at least 20.8 feet of total head. <br /> Comments: <br />