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Sizing of Pump Station <br /> ]. Dctcrminc Si�rfacc Arca T <br /> Rcctangle= Area= L x W wid�h <br /> x = square feet Lcn �h 1 <br /> 6 <br /> Circle= Arca =n x(Radius)2 <br /> 3.14 x x = square feet K����� <br /> Other=Get Surface Area from Manufacturer rz=3.ta <br /> square feet <br /> 2. Calculate Gallons Pcr lnch <br /> There are 7.5 gallons per cubic foot of volume,therefore you must multipiy the area <br /> times the conversion factor and divide by 12 inches per foot to calculate gallons per inch <br /> Arca x 7.5 gpft 3+12 inchs per foot <br /> _ x 7.5+12 =�gallons/inch <br /> 3. Calculatc Gallons to Cover Pump(with 2 inchcs of watcr covcring pump) Estimata!Scwage Flows in Gallons per day <br /> (Hcight(in)+2 inches) x gallons/inch(#2) �g�� <br /> (��+_�)x��= ZZ gallons o[ r Type I Typc[t Typc 11[ Typc <br /> I3cdrooms 1 V <br /> 4. Calculate Total Pumpout Volume 2 300 225 180 <br /> a. To maximize pump lifc select sump sizc for 4 to 5 pump operations per day. 3 a50 300 2]8 �� <br /> fap�_�pd+4 = ��p gallons per dosc 4 600 375 256 °f`�` <br /> b. Calculate drainback <br /> 5 750 45U 294 Valn� <br /> 6 900 525 332 �Yr��. <br /> l. Determine total pipe length, 70 feet. 7 1050 600 370 ""` <br /> 2. Detcrmine liquid volume of pipe,/���gallons per 1(H)fect. 8 1200 675 408 tolomns <br /> 3. Multi ly length b volume: Drainback quantity= <br /> �O feet x .+� gallons/l(�ft. __�gallons. <br /> Vi di�mttcr inchcc Gxllins r 100(cci <br /> c. Total pump out volume equals dose volume+drainback 1 4.4 <br /> /Sd gallons per dosc+��galioi�s=_��_gallons 1.25 7.77 <br /> l.S 10.58 <br /> 5. Calculate Volume for Alarm(typicaliy 2 to 3 inchcs) 2 17.43 <br /> Depth �n)x gallons/inch(#2)= 2.5 24.87 <br /> �3 x Z =��gallons 3 38.4 <br /> 4 66.1 <br /> 6. Calculate Reserve Capacity(75% the daily flc�w) <br /> Daily flow(see page 7)x.75= <br /> DO x.75= o gallons <br /> Rcservc Capacity <br /> 7. Calculate total gallons <br /> �allons over pump+gallons pumpout-��;�ilc�ns alarm +gallons reserve capcity <br /> #3+ #i4 c+tt S +#6 Alarm <br /> �iz + lL2 +� + S =�Qgallocis <br /> Pump On <br /> S. Total Dcpth (Total gallon dividcd by�allc�n per inch) <br /> Total Gallon (it7)+�allo /in h (tt2) <br /> g�p +� =y���nches To�il Pumpo�t Volumc <br /> Pump OfF <br /> Pump Hcight <br /> 9. F7oat Scparation Distancc(equal total pumpout voluinc) <br /> Tc�tal pumpout volumc(#4c)+�allons/inch(#t2) <br /> �4�_��___�inches <br />