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F-22 <br /> Sizing of Pump Station <br /> 1. Determine Surface Area T <br /> Rectangle=Area=L x W tdth <br /> x = square feet Len -L <br /> g;.5 —� <br /> Circle=Area=n x(Radius? <br /> 3.14 x x = square feet <br /> Radius <br /> Other=Get Surface Area from Manufacturer .:=3.14 <br /> square feet <br /> 2. Calculate Gallons Per Inch <br /> There are 7.5 gallons per cubic foot of volume,therefore you must multiply the area times the <br /> conversion factor and divide by 12 inches per foot to calculi Rallons per inch <br /> Area x7.5+12L` <br /> x 7.5+12 = gallons/inch p o a <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water covering pump) Erin utd Sewage Flow in Gallon:per Day(Vd) <br /> (Height(in)+2 inches) x gallons/inch Number <br /> L fes_+�x Z 3 = 774 gallons Bedrooms gyp`t IYve tt Type M [yPe tv <br /> 2 300 22.5 lao 60% <br /> 4. Calculate Total Pumpout Volume a 4600 3375 u6 <br /> A. To maximize pump life select sump size for 4 to 5 pump operations per day. S iso 450 294 vw" <br /> _q SU gpd+4 = //� gallons per dose 7 to 0 600 370 „ <br /> B. Calculate drainback �� 8 1200 675 408 <br /> a. Determine total pipe length,/80 feet. (. �� <br /> b. Determine liquid volume of pipe,l 7 y gallons per 100 feet. (sere page F-13) Gail <br /> c. Multiply length by volume: Drainback quantity= Tdm <br /> t s 7.77 <br /> /&0 feet x /_�4 gallons+100 ft.=3/ gallons. —1.5- pro s8— <br /> C. Total pump out volume equals dose volume+drainback 24.87.87 <br /> 4 <br /> // -3 gallons per dose+ 31 gallons= U Total gallons 4 38. <br /> 66.1 <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inches) <br /> Depth(in)x gallons/inch= Vy Reserve Capacity <br /> E z 23 =gallons y j� a " <br /> / °P, <br /> t6. Calculate Reserve Capacity(75/o the daily flow) Alum <br /> Daily flow(see pa-e D-7)x.75= P,,,,,p <br /> aQ - 3 e <br /> 0gallons <br /> _ To al Pumpout Volume , <br /> 7. Calculate total gallons Pump off X _ <br /> gallons over pump+gallons pumpout+gallons alarm+gallons reserve2�p tle-. ' 1 Z <br /> 3+4+5+6 <br /> 27G + /" +0 + q5O _ gallons /oc <br /> u, alik <br /> ti. Total Depth (Total gallon divided by gallon per inch) GCC <br /> Total Gallon+gallon/inch \ <br /> J G o G +2 3 _= S4?S inches <br /> 9. Float Separation Distance(equal total pumpout volume) <br /> Total pumpout volume+gallons/inch <br /> 3 inches <br />