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i <br /> University of Minnesota Pump Selection Procedure -1012104 <br /> All boxed rectangles must be entered,the rest will be calculated. <br /> Ogre <br /> 1. DdwWne pump capacity. T <br /> A. Gravity Disdfbu8on <br /> 1.Minimum required discharge is 10 gpm <br /> 2.Maximum sujgested dsd arge Is 45 gpm <br /> For otter establishments at bast 10%greater than Be wvaW <br /> supply rate,but no faster Stan Ute rate at which effluent A flow <br /> out of the distribution device. <br /> B. Pressure Distribution-see pressure design worksheet soil treatment system <br /> & int harge <br /> Selected Pump Capacity: 29gpm total pe <br /> lengt <br /> inlet 2A eve-Ion <br /> 2 Determine Total Dynamic Head(rDH) Ope cuHerence <br /> --..-- -- - <br /> A. Elevdw difference between pump and point of drscttarge. ,i........ ...... . <br /> 10 feet ------------•............. ....... <br /> B. Special head requirement?(See Rgure-SVOW heed Regdwnmfs) <br /> 51 Special Head Requirements <br /> Gravity Distribution Oft <br /> C. Friction loss in supply pipe Pressure Dbhibut m 5ft <br /> 1. Seed pipe diameter �in <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipe diameter(C1) <br /> Read Nction lo=fv <br /> 100 feet from Figure E-9 E-9 Friction toss in plastic Pipe <br /> Friction loss= 100 ft of pipe per 100 ft <br /> nominal <br /> 3.Determine total pipe Wngth km pump distitarge to soil system dtsolage point Row Rate pipe ufiameter <br /> Estimate by adding 25 percent to pipe length for motion toss In fillings. 1.5' 2.0' 3' <br /> P't length Tunes 125=equivalent pipe 20 247 0.73 .0.11 <br /> 25 It x 1.25= 31.25 W 25 3.73 1.11 0.16 <br /> 30 5.23 1.55 . 0.23 <br /> 4.Calculate total Mon loss by mulWft friction loss(C2) 35 6.96 2.06 0.3 <br /> by to equivalent pipe bttglw(C3)acrd cr"by 100. 40 8.91 264, 0.39 <br /> Friction Loss= 1.55 fU100ft X 3125 ft 1 100: 0.5 feet 45 11.07 3.28 0.48 <br /> 50 13.46 .3.99 . 0.58 <br /> D. Total head requirement is the an of elevation ditfemce{A)•special 55 4.76 0.7 <br /> head requirements(B).and teal Mon lass(C4). 60 5.6 0.82 <br /> 110 ft + 5 ft + 1.0 It 65 6.48 0.95 <br /> .70 7A 1:09 <br /> Total Head: 160 feet <br /> 3. Pump Selection <br /> A pump must be selected to diver at least 29 gynn(1A or 8) <br /> with at least 16.0 feet of total head(21) <br /> I hereby ce*that I have completed.this work in accordance with all applicable ordurances,rules and laws. <br /> (signature) 810 (kww#) 5107108 Mel <br /> Page 1 of 1 <br /> 8'd OLip9 ZLi, ass spooA as l T qnC wa*:80 80 la Rew <br />