Laserfiche WebLink
PUMP SELECTION PROCEDURE <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%greatei- t11an the water suppl�� rate, <br /> but no faster than the rate at which effluent will flow out of the <br /> distribution device. <br /> B. Pressure distril��itioil <br /> See py-essure distribution work slTeet <br /> Froin A or I3 Selected �ump capacity: ��i? gpin <br /> 2. Deterinine puiYip head req�.iirement�: <br /> A. �levation difference behveen pump and point of discharge? soil treatment system <br /> 13 _feet &point of discharge <br /> d?9o°�ci°:de: ��7� <br /> B. Special head requirement? (See Figi�re af righf - Special Head Requirements) total pipe <br /> v feet , length <br /> inlet `" "''"=� } 2A.elevation <br /> C. Calculate Friction loss - ;, difference <br /> p�pe ` i <br /> ;• ------- -- - <br /> > <br /> 1. Select pipe diameter '� ln ' <br /> „ ................. ; <br /> ;: <br /> � �---------------------------- -----� <br /> z. Enter Figure E-9 with gpm (lA or B) and pipe diameter (Cl). <br /> Read friction ]oss v��et per 100 feet from Figure E-9 Special Head Requirements <br /> Friction Loss = a�-.� ft/100ft of pipe Gravity Distribution 0 ft <br /> 3. Determine total pipe length h-oin pump discharge to soil treatment Pressure Distribution S ft <br /> discharge point. Estimate by adding 25 percent to pipe lengih for <br /> fitting loss. Tota] pipe length times 1.25 = equivalent pipe ler�gth <br /> l��? feet x 1.25 - � ti feet E-9: friction Loss in Plastic Pipe <br /> 4. Calculate tota] friction loss by multiplying friction loss (C2) Per 100 teet <br /> nominal <br /> in ft/100 ft by the equivalent pip� length (C3) and divide by 100. pipe diameter <br /> = o-'- "� ft/100ft x �� =100 - �-- ft Ylow rate 1.5" 2" 3" <br /> pm <br /> D. Total head required is the sum of elevation difference (A),special 20 2.47 OJ3 0.11 <br /> head requirements (B), and total fricHon loss (C4) 25 3J3 l.l l 0.16 <br /> _ 1� ft + 5� ft+ "z {t = 30 5.23 1.55 0.23 <br /> T��al head: �'� fee� 35 6.96 2.06 0.30 <br /> _ 40 8.91 2.64 0.39 <br /> �. �'uinp 5electios� 45 11.07 3.28 0.4a <br /> 50 13.46 3.99 0.5� <br /> A pump must be selected to deliver at least 3�' ,�pm 55 4•76 0.70 <br /> 60 5.60 0.82 <br /> (lA or B) v��iih at ]east a.� feet of total head (2D) 65 <br /> 6.48 0.95 <br /> 70 7.44 1.09 <br /> I hereby certify that I have completed this work in accordance with applicable ordinances, rules and la�vs. <br /> __1-_ j <br /> - �`� `��� �!'� � (signature) 3`al `-�� (license#) _ `� - ?1- -t�� (date) <br />