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. <br /> .I.. -NIP SELECTIO ,PROCEDURE . <br /> N. . ^ 411,•,s <br /> 1. Determine pump capacity: ! . ) � IR <br /> A. Gravity distribution d f----------- - --- 1+,5��- <br /> 1. Minimum required discharge is 10 gpm i 1, <br /> 2. Maximum suggestedi <br /> disduuge is 45 gpm. For 4ther _Jpy.1r,A__ <br /> establishments at least 10%greattee than the we supply rate, <br /> c)°.5.3 <br /> o l <br /> but no faster than the rate at which effluent willflow out '. •! V(.1.0‘....f <br /> distribution device. 1 •• of the X.4 .% is <br /> B. Pressure distribution • <br /> See pressure distribution worksheet '" vow 6n t+1y <br /> to L.1�.t lo�Sw� vs P1244.4. <br /> From'A or B Selected pump capacity: a,c, gpm <br /> 2.Determine pump head requirements: �wt�� � <br /> A.Elevation difference between pump and point of discharge? td St d <br /> t5 feet a <br /> B.Special head requirement?(See Figure at right-S a Head 8'4 ". ° <br /> pccq,l Requisen,rl,rfs) told••- <br /> feet ews .® <br /> . C.Calnilate Friction losslevolicri <br /> pipe l 2A.eMence <br /> V3•t3 t vt►avC difference <br /> 1. Select pipe diameter tl !_in • <br /> 2. Enter Figure E-9 with gpm(1A or B)and pipeeter(el). <br /> . y head friction loss in feet per 100 feet from Bigtue� -9 . Special Head Requirements <br /> Friction Loss=•' 14 c) ft/100ft of pipe I ;. Gravity Distribution 0 h <br /> . 3. Determine total pipe length from pump discttargg to soil treatmerjt?rum*Distn'bution 5 ft <br /> •discharge point.Estimate by adding 25 percent tip pipe length for? <br /> fitting loss.Total pipe length times 1.25=equivalent pipe length. -6-¢Fdc1Io lose in Mask Pipe <br /> Isis feet x1:25= d31 <br /> • <br /> 4.Calculate total friction loss by multiplying friction loss(C2) Per 100 feet <br /> in ft/100 ft by.the equivalent pipe length(C3)and divide by 100. . nominal dometer <br /> = r).°1 ft/100ft x ?At +100= 14 1 ft rate 1.5•" 2" 3• <br /> fan <br /> • D. Total head required is the sum of elevation difference(A),special ' 20 • 2.47 0.73 0.11 <br /> head requirements(B),and total friction loss. C4) • • , , 26 3.73 1.11 0.16 <br /> • 1 5 . ft+ - ft+ Ind . . it ; 1).13 IA J,.. 6.23 155 0.23 <br /> Total head: ' 33 few { 35 6.96 2.06 0.30 <br /> 40 8:91 2.64 0.39 <br /> 3.Pimp selection 45 11.07 3.28 0.48 <br /> le 1 4450 13.46 0.58 <br /> i 55 <br /> A pump must be selected to deliver at least a% pm 4.76 0.70 <br /> 60 <br /> (1A or B)with at least 3 feet of total head(2D) : es 5.60 0.95 <br /> I 6A8 0.95 <br /> • <br /> _ . 70 7.44 1.09 <br /> i . <br /> • <br /> I hereby certify dial have c pleted this work in acco <br /> .1 -(25 ..' <br /> •/ � c � rdatice with applicable ordinances, rules and laws. <br /> (signature) 3'+.1--.) (license S) 2 -/0-)b"... (date) <br /> 1 <br /> i <br /> FEB 12 2015 <br /> CITY OF ORONO <br /> 3718 .. <br />