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� PUMP SELECTION PROCEDURE <br /> All boxed rectangles must be entered,the rest will be calculated. <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 <br /> For other establishments at least 10%greater than�e water <br /> supply rate,but no faster than the rate at which eftiuent will flow <br /> out of t�e distribution device. <br /> B. Pressure Distribution-see pressure design worksheet sou r��t��r Svster„ <br /> &pdnt of dfscharge <br /> fiill7fl5Ff::tE..i <br /> Selected Pump Capacity: 47 gpm rotai ptpe <br /> lengt <br /> 2A,elevatlon <br /> Inlet € difference <br /> 2. Determine head requirements: • �� ;; , <br /> �. ---- <br /> - - <br /> A. Elevation difference beMreen pump and point of discharge. €� -- -- - x <br /> 1L �l !E i '"'"""'""""""""""""'" "'_"". <br /> g, Specyal head requirement?(See F'rgwe-Special Hea�l Requirements) <br /> ��feet Special Head Requirements <br /> Gravity Distribution Oft <br /> C. Friction bss Pressure Distribution 5ft <br /> 1. Select pipe diame� �in <br /> 2. Enfier Figure E-9 with gpm(1A or B)and pipe diameter(C1) <br /> Read friction loss in�eet 100 feet irom Figure E-9 E-9 Frict�on Loss in Plastic Pipe <br /> e <br /> Friction bss= 3.99 ft/100 ft of pipe per 100 ft <br /> nominal <br /> 3.Defiermine total pipe lengih from pump discharge to sal system discharge point Flow Rabe ' diameter <br /> Estima�e by adding 25 peroer►t to pipe length for fitting loss. gpm 1.5" 2.0" 3" <br /> E uival�t ' lengih times 1.25=total pipe length 20 2.47 0.73 0.11 <br /> 165 ft x 1.25= 206.25 feet 25 3.73 1.11 0.16 <br /> 30 5.23 1.55 0.23 <br /> 4.C�culate total friction bss by multiplying fiction Ioss(C2) 35 6.96 2.06 0.3 <br /> by ttie equivalent pipe length(C3)and divide by 100. 40 8.91 2.64 0.39 <br /> FL= 3.99 ft/100ft X 206.25 ft / 100= 8.2 feet 45 11.07 3.28 0.48 <br /> 50 13.46 3.99 0.58 <br /> D. Total head requirement is the sum of eleva6on difference(A),special 55 4.76 0.7 <br /> head requirements(B),and total friction I�s(C4). 60 5.6 0.82 <br /> 12 ft + 5 ft + 9.0 ft 65 6.48 0.95 <br /> 70 7.44 1.09 <br /> Total Head: 26.0 feet <br /> 3. Pump Selection <br /> 1.A pump must be selected to deliver at least 47 gpm(1 A or B) <br /> with at least 26.0 feet of total head(2D). <br /> I hereby oertiiy that I have oompleted this work in acxordance with all applicable ordinances,Nles and laws. <br /> (signature) 810 (license#) v� (date) <br /> Page 1 of 1 <br />