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, <br /> � Pump Selection Design ,;��`, � <br /> SEWAGE yN .,;•�, ., <br /> Minnesota Pollution Worksheet r r,r���,��,r <br /> Control A enc ` ��� "�'��,�r" <br /> , 1. PUMP CAPACITY <br /> 1. Pumping to Gravity Distribution <br /> A. Minimum discharge is 10 GPM(15 GPM recommended) �GPM <br /> � B. Maximum discharge is 45 GPM <br /> 2. Pressure Distribution <br /> � �Individual SSTS �Collettion System <br /> Required Flow Rate (Line 11 of Pressure Distribution or Line 10 of Non-Level) 3$,Q GPM <br /> , c. �istribution to: p Soil Treatment Unit ❑Media Filter ❑ATU p Other <br /> 2. HEAD REQUIREMENTS <br /> � o�veatme,tt:ysten, <br /> 3. Elevation Difference �$ ft 8yointotd�scharge <br /> � between pump and point of discharge: h / . tl <br /> �c,��� <br /> NOTE:IF system is an individual subsurface sewage treatment nlct D��� � Ekvation%� <br /> ' system, complete steps 4-9. If system is a Co!lection System, c ml �H�e <br /> skip steps 4, 5,7 and 8 and go to Step 10. <br /> � i <br /> ' ----------------------------- ------------- <br /> 4. Distribution Head Loss: �Q ft <br /> � 5. Additional Head Loss: ft(due to special equipment,etc.) <br /> � <br /> ' Distribution Head Loss ncdon Loss�n P ast�c pe per <br /> Gravity Distribution = Oft G=130 <br /> Pressure Distribution based on Minimum Average Head Nominal Pipe Diameter <br /> Value on Pressure Distribution Worksheet: F OYV Rdte � �,y+ �� 2 3 <br /> � GPM __- <br /> Minimum Avera e Head Distribution Head Loss �p 9.11 3.08 1.27 0.31 <br /> 1ft 5ft <br /> 2ft bft �2 12.77 4.31 1.78 0.44 --- <br /> ' 5ft 1 oft 14 16.99 5.74 2.36 0.58 --- <br /> 16 7.35 3.03 0.75 0.10 <br /> 6. A.Supply Pipe Diameter: 2,QQ in 18 --- 9.14 3.76 0.93 0.13 <br /> � B.Supply Pipe Length: 2�Q ft <br /> 20 --- 11.11 4.58 1.13 0.16 <br /> 25 16.79 6.92 1.71 0.24 <br /> 7. Based on Friction Loss in Plastic Pipe per 100ft from Table I: 30 --- --- 9.69 2.39 0.33 <br /> � 35 --- --- 12.90 3.18 0.44 " <br /> Friction Loss= 3.(�] ft per 100ft of pipe 40 ___ -_ 16.52 4.07 0.57 <br /> � 45 --- --- --- 5.07 0.70 <br /> g, Determine Equivalent Pipe Length from pump discharge to soil dispersal 50 ___ ___ ___ 6.16 0.86 <br /> � area discharge point. Estimate by adding 25%to supply pipe length for ___ --- ___ <br /> fitting loss. Supply Pipe Length(5.8) X 1.25=Equivalent Pipe Length 55 7.35 1.02 <br /> 60 8.63 1.20 <br /> 2�Q ft X 1.25 = 2G 2�5 ft 65 -- --- --- 10.01 1.39 <br /> � �� --- --- --- 11.48 1.60 <br /> 9. Calculate Supply Friction Loss by multiplying Friction Loss Per 100ft (Line 6)by the Equ�valent Pipe Lengt (Line 7)an ivi e y 100. <br /> Supply Friction Loss= <br /> 3.67 ft�r�oort x 262,5 rt + �oo = 9,6 ft <br /> � <br /> ' <br /> � <br />