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� Sizin�of Pumv Station <br /> 1. Detcrminc Surfacc Arca T <br /> Rcctanglc=Area=L x W w�dih <br /> x = square feet I.cn ih 1 <br /> s <br /> Cirde=Area=n x(Radius)2 <br /> 3.14 x x = squaze feet k���ut <br /> a=3.14 <br /> Other=Get Surface Area from Manufacturer <br /> square feet <br /> 2. Calculate Gallons Per tnch <br /> Thcre am 7.5 gallons per cubic foot of volumc,thcrcforc you must multiply 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'+12 inchs per foot � <br /> . > <br /> �� ��0%� ��:v£ �1�fia� ' <br /> x 7.5+12 = gallons/inch <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of watcr covcring pump) Estimatai Scwage Flows in Gallons per day <br /> (Height(in)+2 inches) x gallons/inch(#2) �g�� <br /> um r <br /> ( �� + �� )x ��: =.�4f' gallons of Type I Typc Il Type II[ Typc <br /> I3cdrooms 1 V <br /> 4. Calculate Total Pumpout Volume 225 180 <br /> a. To maximize�ump life select sump size for 4 to 5 pump operations per day. � 450 300 218 � <br /> 4.`s C� �pd+4= ,[f� gallons per dose 375 256 �ai�� <br /> b. Calculate drainback 5 750 450 294 ;,, <br /> l. Determine total i e len th �-E3 feet. 6 900 525 332 �'rr��. <br /> p p g , � toso 600 3�0 ';,;� <br /> 2. Determine liquid volume of pipe, 7r ,� gallons per 1(x)fc,�ct. 8 1200 675 408 columns <br /> 3. Multi�?ly length by volume: Drainback quantity= <br /> `t� fcet x�,�qgallons/]00 ft._�gallons. <br /> Pi diametcr inch�.s Cxilcns r 100(ut <br /> c. Total pump out olume equals dose volume+drainback 1 4.4 <br /> �allons per dose+�gallc>ns=f�G� gallons L25 7.77 <br /> 1.5 <br /> 5. CalculaM Volume for Alarm(typically 2 to 3 inchcs) f�j 17.43 <br /> Depth(in)x gallons/inch(#2)_ �S 2 . 7 <br /> �E� x 2 =}�gallons 3 38.4 <br /> 4 66.1 <br /> 6. Calculate Reserve Capacity(75% the daily flow) <br /> Daily flow(see page D-7)x.75= <br /> ��C3 x.75=�Z,gallons <br /> 7. Calculate total gallons Reserve Capacity <br /> gallons over pump+gallons pumpout+gallons alarm+gallons reserve capcity <br /> #3+ #4 c+#5+#6 <br /> �+ '�+�+�� ' _ -:7 gallons Alarm <br /> Pump On <br /> S. Total Depth (Total gallon dividcd by gallon per inch) <br /> Total Gallon(#7)+gallon/inch(#2) I To 1 Pumpout Volumc <br /> �_+�('�_��inches Pump OfF <br /> Pump Hcight <br /> 9. Float Scparation Distancc(equal total pumpout volumc) <br /> Total umpout volum (#4c)+�allons/inch(#2) <br /> ��C�/+�C: =�inches <br />