Laserfiche WebLink
' �� � PUMP SELECTION PROC�D�.JRE <br /> , , <br /> 1. Determine pump capacity: <br /> ,- .�.;,A. Gravity distribution <br /> 1. Minimum required discharge is 10 gpm <br /> 2. Maximum suggested discharge is 45 gpm. For other <br /> establishments at least 10%greater than the water supply rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> distribution device. <br /> B. Pressure distribution <br /> See pressure distribution work sheet <br /> From A or B Selected pump capacity: �.Z_gpm <br /> 2. Determine pump head requirements: <br /> A. Elevation difference between pump and point of discharge? so�treotment system <br /> &point f ischarge <br /> �d feet ox:.;_ �� rooz <br /> B. Speci requirement?(See Figure at right-Special Head Requirements) 1etal pipe <br /> �9 <br /> ,�_feet 2A.elevotion <br /> inlet difference <br /> C.Calculate Friction loss P�Pe <br /> ... <br /> 1. Select i e diameter Z�D in """""""""' " <br /> P P -------------------------- ------� g g� <br /> 2. Enter Figure E-9 with gpm(lA or B)and pipe diameter(Cl). <br /> Read friction loss in feet per 100 feet from Figure E-9 Speclal Head Requirements <br /> Friction Loss= 3• !o ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Determule total pipe length from pump discharge to soil treatment Pressure Distribution 5 ft <br /> discharge point.Estimate by adding 25 percent to pipe length for <br /> fitting loss.Total pipe length times 1.25=equivalent pipe length E-9: Fricfion Loas in Plastic Pipe <br /> /�o feet x 1.25 = 1 z� feet Per 1�fest <br /> 4. Calculate total friction loss by multiplying friction loss (C2) nominal <br /> in ft/100 ft,by the equivalent pipe length(C3) and divide by 100. pipe diameter <br /> - 3.1e ft/100ft x I Z +100= S ft flpmrote 1.5" 2" 3" <br /> D. Total head required is the sum of elevation difference (A),special � 2.47 OJ3 0.11 <br /> head requirements (B),and total friction loss (C4) 25 3J3 1.11 0.16 <br /> _�_ft+ .S ft+ S ft= � 5.23 1.55 0.23 <br /> 35 6.96 2.06 0.30 <br /> Total head: /t� feet ao s.9� 2.aa o.s9 <br /> 3. Pump selection a5 �i.o� s.2s o.as <br /> 50 13.46 3.99 0.58 <br /> 55 4J6 OJO <br /> A pump must be selected to deliver at least�gpm bp 5.60 0.82 <br /> (lA or B)with at least__1�¢___feet of total head (2D) a5 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I hav completed this work in accordance with applicable ordinances, rules and laws. <br /> �/(.-- (signature) �9�" (license#) / / '3-iD� (date) <br /> � <br /> � <br />