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, . ��..�,�.� �� <br /> � PUMP SELECTIOI�T�P�Z4C�D�JRE� ` <br /> 1. Determine pump capacity: <br /> ,..--�..,A. Gravity distribution <br /> 1. Minimum re4uired discharge is 10 gpm . <br /> 2. Maximum suggested dischazge is 45 g�m. For other <br /> establish�men#s at.least 10'/0:greater tl�ari the water supply rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> disttibudon device. �. . , <br /> B. Pressure distribution � <br /> See pressure distribution work sheet <br /> From A or B.Selected'pump capacity: .��gpm <br /> 95.� <br /> 2. Determine pump head requirements �,,,�,-C1_��,.o <br /> A. Elevation difference between pumg and point of discharge? �#e�s�t system <br /> �I feefi &p � �a,� harge <br /> B.Special head requirement?(See Figure at right-Special Head Requirements) total ipe <br /> le <br /> =feet inlet �differece <br /> C. Calculate Friction loss . P�PQ <br /> 1. Select pipe diameter' �.� in ..__..�' .......................... .....�10.o <br /> 2. Enter Figure E-9 with gpm(lA or B)and pipe diameter(C1). <br /> Read friction lossin feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss= 1,t l ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Determine total p�pe length from pump discharge to soil treatment Pressure DistribLtion 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: F�ictlon Loss in:Plastic Pipe <br /> )D . feet x 1.25 = t 3 feet Per 100 feet <br /> 4. CaTculate 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 /> _ /,�� ft/100ft x�3 +100=�_ft flo mrate 1.5" 2" 3" <br /> D. Total head required is the sum of elevadon difference(A),special � 2.47 0.73 0.11 <br /> head requirements.(B),and total friction loss (C4) 25 3J3 1.11 016 <br /> _�_ft+ ft+�_ft= 30 5.23 1.55 0.23 <br /> 35 6.96 2.06 0.30 <br /> Total head: 10 feet ao s,9� 2.aa o.s9 <br /> 3. Purnp selection a� � t�.o� s.2s o.48 <br /> 50 13.46 3.99 0.58 <br /> 55 4.76 0.70 <br /> A pump must be selected to deliver at least a.J Q;um � bp 5.60 0.82 <br /> (lA or B)with at least�feet of total head (2D) �5 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I hav completed.this work in accordance witk�applicable ordinances, :rules and laws. <br /> -`� (signature) (license#) (e - 1`�-03 (date) <br />