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SYSTEM HYDRAULIC CALCULATIONS <br /> <br />STATIC HEAD: <br />(vertical elevation difference from the pump <br />base to the pressure distribution laterals) <br /> <br />SYSTEM ALLOWANCE: <br />(includes distribution piping losses and a 5 foot <br />residual head at discharge of distribution piping) <br /> <br />FRICTION ~ ~:AD LOSS: <br />(transport pipe friction loss from flow rate) <br /> <br />(a) <br /> <br />CALCULATE FLOW RATE: <br />Diameter of orifices = ~[~t'~. inch <br />Number of orifices (N) = 7~'-~ <br />Orifice Discharge Rate (R) = (see over) <br /> <br />NxR = <br /> <br /> Flow Rate (GALLONS PER MIMUTE) <br /> <br />~ .~1 ~ = 30. 75 o~ <br /> (~) <br /> <br />(b) <br /> <br />CALCULATE FRICTION LOSS: <br />Length of transport pipe (L) = <br />Friction loss coefficient (F) = <br /> <br />~.~ feet <br />J, 3 '~ (see over) <br /> <br />L_L__ x F = Friction Head loss in feet <br />100 <br /> <br /> .77 x 1,37 = <br />(i/t00) (F) <br /> <br />TOTAL DYNAMIC [IEAD: <br />(sum of static head, system allowance <br />and friction head) <br /> <br />5. HYDRAULIC SPECIFICATIONS: <br /> PUMPD~r~: _,~qO GPM~ 9.~ ToI~ <br /> <br /> MODEL: 3p SO; HORSEPO~R: l[~ <br /> CAPACI~: $ XCTDR ~ ~GPM, and <br /> <br /> *In th~ absence of sp~e[fi~ h~ad loss ~al~ulafions, us~ I0 f~t. <br /> <br />feet <br /> <br />10* feet <br /> <br />1.05 feet <br /> <br />MCI5-SI5 <br />Rev. 4/98 <br /> <br />Marion County Building Inspection <br />3150 Lancaster Dr. NE, Suite C <br />Salem, Oregon 97305-1398 <br /> Ph. 588-5147 <br /> <br /> <br />