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� Universifijl of Minnesota Pump Selection Procedure - 10125104 <br /> AN boxed rectangles rrn,st be entered,n�e resc wi�be c�cu�abed. <br /> o�r. <br /> 1. DeEermine pump ca�pacity: ,ts.�rw.e <br /> A. G�'vily Distributlort rwoo.ew.. <br /> 1.Mn6naun requ�ed�Scharge is 10�m <br /> 2 Ma�dnwxn sugges6ed �s 45 gpn <br /> For oihe�e�ab�tunenls�109fi gr�er than the waber { <br /> supply ra�e,but no fas�er than tlie�a1e at which efl�ent will flow <br /> out o#tl�e distritwtion devioe. <br /> B. Presaure Distributlon-s�ee pressure design worksheet sou t�earme�,t sysrem <br /> &pant�o.��f��d.��i�scharge <br /> :}i1Ei'tii'� <br /> Selt�ed Pump Cepedt�l: �gpm tota�pipe <br /> leng <br /> inlet 2A.elevation <br /> � ��T�' �� � difference <br /> �m �� � `' <br /> p1pe xj ---- - - � <br /> A �Elevation�nce between pump and pant of discharge. :� : <br /> , ..__ _ <br /> U� =1 i --------------------------- ------ <br /> B. Speaal t�ead requirement?(See tigwe-Speaa!Head Requi►ements) <br /> �-�feet Speci�Head Re� uirements <br /> Graviiy Distribu6on Oft <br /> C. FricUon loss in supply pipe Pre.asure Distribution 5ft <br /> 1. Selec:t pipe diameter �2 in <br /> 2. E�Figur�e E-9 with gpm(1A or B)and ppe diameter(C1) <br /> Read iric6on loss in feet 100 feet irom Fgur�E-9 E-9 F�tion Loss in Plaatic Pipe <br /> Frictiai loss= 2.64 ft/100 ft o#pipe 100 it <br /> nominal <br /> 3.De�ertrune btal pipe length irom purr�p di�h�ge to sal sys6ern discharge pant Fbw Rate ' di�rieter <br /> Es�na�e by adding 25 peroent lo p�e length for iriction los,s in fiitir�gs. 1.5' 2.0' 3" <br /> times 1.25=equivalent Pipe length � �,.;.� :„ <br /> � 4 <br /> L ��Jft x 1.25= 28.75 feet 25 3.73 1.11 0.16 <br /> €�G�� �x� ,��i, #.�,: <br /> 4.C�cula�e total fiiction loss by mutbplying iriction loss(C2) 35 6.96 2.06 0.3 <br /> by the equiwalent piPe lenglh(C3)�d divide by 100. �i �. .��� ,:� �. <br /> Friction Loss= 2.64 ft1100ft X 28.75 ft / 100= 0.8 feet 45 11.07 3.28 0.48 <br /> ��� �.f ��� <br /> :, <br /> D. Total head requirement is the�m of elevation ditf�ence(A),special 55 4.76 0.7 <br /> h�d requrcements(B),and tot�fric�ia�bss(C4). �_='° � °�� �:$�2 <br /> 9 ft + 5 ft + 1.0 ft 65 6.48 0.95 <br /> 70`" °?:+14 1.C19 °' <br /> Total Head: 15.0 feet <br /> 3. Pump Selection <br /> 1.A pump must be selected to deliver at least 38 9Pm(1A or B) <br /> with at least 15.0 feet of�otal head 2D). <br /> I t�eby ae�tify that I have oompleted lhis wak in a000rda�we wilh�I applic�le ordinanoes,n�les and laws. <br /> (signabure) 810 (license#) 7102I07 (Date1 <br /> Page 1 of 1 <br />