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Determine Surface Arra <br />Rectangle = Arra = L x W <br />Circle = Area = It x (RadtusP <br />3.14xx__ <br />square feet <br />__ square feet <br />Other = Get Surface Area from Manufacturer <br />square feet <br />T <br />w,drnl <br />1 <br />I .cnph <br />Radius <br />x=114 <br />2. Calculate Gallons Per Inch <br />There are 75 gallons per cubic fort of volume, therefore you must multiply the arra <br />times the conversion factor and 'ivide by 12 inches per foot to calculate gallons per inch <br />Area x 7.5 gpft' + 12 inchs per foot <br />X7.5+12 = j gallonslinch C.fG�C �l �ivt ��IA'c ter <br />3. Calculate Gallons to Cover Pump (with 2 inct". of water covering pump) <br />(Height (in) + 2 i hes) x gallons/inch 1t2) <br />(y +) x 7_ _ AW gallons <br />4. Calculate Total f umpout Volume <br />a. To maxze pump life select ump size for 4 1:15 pump operations per day. <br />gpd + 4 = �� gallons per dose <br />b. Calculate drainback <br />I. Determine total pipe length, /10 fact. <br />2. Determine liquid volume of pipe, (Zi gallons per IM fort. <br />3. Multi ly length b volume: Drainback qua ,tity = <br />LG' feet x 77a4 gallons/ 1(lO ft. _ _��%_ gallons. <br />Ettimslod Sewage Flogs in Galltmu per day <br />(Spd) <br />NumtW1 <br />1.25 <br />4.49 <br />7.77 <br />of <br />Typc I <br />Type Il <br />Type III <br />T)pc <br />I V <br />Red")mt <br />4 <br />661 <br />2 <br />300 <br />223 <br />190 <br />3 <br />450 <br />300 <br />21d <br />WS <br />4 <br />600 <br />373 <br />256 <br />"r N" <br />S <br />750 <br />450 <br />294 <br />N <br />6 <br />900 <br />525 <br />332 <br />1>R I. <br />7 <br />IOSO <br />60U <br />370 <br />II <br />R <br />1200 <br />673 <br />409 <br />caallr�w <br />Total pump out volume equals dose volume + drainb•ick <br />gallons per dose + _LQ_ gallons = Z 0 % gallons <br />5. Calculate Volume for Alarm (typically 2 to 1 inches) <br />Depth (in) x gallons/inch 02) = <br />8 x Z. = S-�o gallons <br />6. Calculate Reserve Capacity (75'4 the dally fila%) <br />Daily flow (see page D-7) x .75 = <br />ZOO x .75 =: (r- gallons <br />7. Calculate total gallons <br />gallons over pump + gallon% pumpt.ttt .', ilons alarm + gallons reserve catxity <br />#3+#4c+a5+46 <br />X31( + Z01 + +S6 -Z = %/ gallons <br />& Total Depth (Total gallon divided by gallon per inch) <br />Total Gallon (a:) + gallon /inch (It2) <br />Ll �r ( + 2 f6-- = _ail_ inches <br />9 float Separation Distance (equal total pumpoul . nlutuc ) <br />Total purppout volume (1140 + gallon~/Inch (M_) <br />240'/+ !_V_= _� inches <br />► �owae' anAc� <br />C.Ik" M too Ia.a <br />1.25 <br />4.49 <br />7.77 <br />(15 <br />� 5 <br />i4-8'1/ <br />3 <br />38.4 <br />4 <br />661 <br />Rcccrrc Capxit) <br />4larm <br />Pump On <br />1b <br />F'ump Off <br />Pump Ikight <br />al Pumpout Wlume <br />