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F-22 <br /> Sizing ' tR Station <br /> 1. Determine Surface Area T <br /> Rectangle=Area=L x W 'dth <br /> x = square feet -L <br /> Length <br /> Circle=Area=n x(Radius) <br /> 3.14 x x = square feet <br /> Radius <br /> Other=Get Surface Area from Manufacturer n=3.14 <br /> square feet - <br /> 2. Calculate Gallons Per Inch <br /> There are 75 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 calculate gallons per inch <br /> Area x 7.5+12 /'n 44%.....t <br /> x 75+12 = �+� gallons/inch <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water covering pump) es"""ed s`""&`now.n Ciallans P"�'(Uwa <br /> (Height(in)+2 inches) x gallons/inch Number <br /> ( /o + 7 )x ZS =dao gallons s«toom 22 <br /> soo 22Of 3I Type a I`M Type`IVs iso 60% <br /> 4. Calculate Total Pumpout Volume 4 boo 3s° ub '_ <br /> A. To maximize pump life select sump size for 4 to 5 pump operations per day. 5 750 Oso 294 "m' <br /> 900 5Z5 <br /> gpd+4= /13 gallons per dose 7 1050 s�o . <br /> B. Calculate drainback 8 1200 675 408 <br /> a. Determine total pipe length,/ao feet. <br /> b. Determine liquid volume of pipe,/7.4 gallons per 100 feet. (see page F-13) <br /> TIT <br /> V92110- i <br /> c. Multiply length by volume: Drainback quantity= 1.zs 7.77feet x /1-Y gallons+100 ft.=J-7 gallons. yyss,� <br /> C. Total pump out volume equals dose volume+drainback 2-524.87 <br /> gallons per dose+_ /7 gallons= 130 Total gallons 4 38 i <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inches) <br /> Dejth(in)x gallons/inch= <br /> x�= gallons Vy Reserve Capacity <br /> 6. Calculate Reserve Capacity(75%the daily flow) yr Alum <br /> Daily flow(see page D-7)x.75 V pip On c� <br /> 3 <br /> ,q to x A_�So_gallons <br /> q ►► <br /> •oo �30 1 T Pumpout volume c7 � <br /> 7. Calculate total gallons Pump Off <br /> gallons over pump+gallons pumpout+gallons alarm+gallons reserve p p�,► t <br /> 3+4+5+6 30'� �� <br /> .Loo + 1.30 + 71< + /4s5 S5 gallons Usr <br /> do v <br /> 8. Total Depth (Total gallon divided by gallon per inch) <br /> Total Gallon+gallon/inch <br /> 16po + 7.5 4fO inches <br /> i 9. Float Separation Distance(equal total pumpout volume) <br /> Total pumpo t volume+gallons/inch <br /> inches <br /> I <br />