Laserfiche WebLink
� � PUMP SELECTION PROCEDURE <br /> 1. Determine pump capacity: <br /> , A. Gravity distribution <br /> l. Minimum required discharge is 10 gpm <br /> 2. Maximum suggested discharge is 45 gpm. For other <br /> estaUlishments at least 10%greater than the water supply rate, <br /> Uut no faster than the rate at which effluent will flow out of the <br /> distribution device. <br /> B. Pressure distril�ution <br /> See pressure distribution work sheet <br /> From A or B Selected pump capacity: �!� gpm <br /> 2. Determine pump head requirement�: <br /> A. ElevaHon difference between pump and point of discharge? soil treotment systern <br /> _�_feet &point of discharge <br /> a9:'Oo°Dd:9a'. �c9t?,� <br /> I3. Special head requirement? (See Figure at right - Special Head Requirements) total pipe <br /> length <br /> .� feet 2A.elevation <br /> inlet ;` difference <br /> C. Calculate Friction loss pipe .`.� <br /> , �,------- -- - <br /> :;: ,. <br /> 1. Select pipe diameter ui ...................... . . <br /> ' ' _ "X'z__ <br /> ,� - ----- <br /> �--------------------------- <br /> 2. Enter Figure E-9 with gpm (lA or B) and pipe diameter(Cl). <br /> Read friction loss u1 feet per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss = v -� ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Detennine total pipe length froin pump discharge to soil treahnent Pressure Distribution 5 ft <br /> discharge point. Estimate by adding 25 percent i�pipe lenglh for <br /> fitting loss. Total pipe length times 1.25 = equivalent pipe ler�gth <br /> 3 O feet x 1.25 - �� feet E-9: Friciion Loss in Plastic Pipe <br /> Per 100 feet <br /> 4. Calculate total friction loss by multiplying friction loss (C2) nominal <br /> ui ft/100 ft by the equivalent pipe length (C3) and divide by 100. pipe diometer <br /> = 3.'Z-- ft/100ft x 3� =100 = 1 ft ���W rate 1.5" 2" 3" <br /> pm <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) 25 3.73 l.l 1 0.16 <br /> � ft+ t5 ft+ I ft - 30 5.23 1.55 0.23 <br /> T�atal head: 1 �# feet 35 6.96 2.oa o.30 <br /> 40 8.91 2.64 0.39 <br /> 3. )PL1Irip SeleCtlO�l 45 11.07 3.28 0.4F3 <br /> 50 13.46 3.99 0.5t3 <br /> 55 4.76 0.70 <br /> A pump must be selected to deliver at least �_�gpm bp 5.60 0.82 <br /> (1A or B) with at least ��'�' feet of total head (2D) 65 6.48 0.95 <br /> 7� 7.44 1.09 <br /> I hereby certify that I have_Sompleted this work in accordance with applicable ordinances, rules and laws. <br /> --- , <br /> .�, �,/.. �,, <br /> _ C.�- �- - <br /> '� '� ��"�""- (signature) va1 � (license#) � -' a� �l�c} (date) <br />