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. i, , <br />, • ' Sizing of Pum� Station <br /> 1. Dctcrminc Surfacc Arca T <br /> Rcctanglc=Arca = L x W W'��h <br /> x = square feet 1' <br /> Lcngth <br /> Circle= Area=n x(Radius)2 <br /> 3.14 x x = squue feet K��;us <br /> Other=Get Surface Area from Manufacturer rz=3.1a <br /> square feet <br /> 2. Calculate Gallons Per inch <br /> Thcre are 7.5 gallons per cubic foot of volumc,thcreforc you must multiply the arca <br /> times the conversion factor and divide by 12 inches}xr foot to calculate gallons per inch <br /> Arca x 7.5 gpft'+12 inchs per foot <br /> x 7.5+12 =.��gallons/inch C��'��E ��A i ac / <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water coveri»g pump) Estimata!Scwage Flows in Galions per day <br /> (Height(in)+2 inches) x gallons/inch(#2) �g�� <br /> um r <br /> (�7�+ Z )x 2,�=32Z gallons of Type I Typc I[ Typc II[ Typc <br /> I3cdrooms 1 V <br /> 4. Calculate Total Pumpout Volume <br /> a. To maximize pump life select sump size for 4 to 5 pump operations per day. 3 450 300 2l8 � <br /> �_gpd gallons per dose 4 600 375 256 °��" <br /> .� t 4=_.�Z� valuct <br /> b. Calculate drainback 5 750 450 294 ;� <br /> 1. Determine total i e len th o 0 f�t. 6 900 525 332 �i���. <br /> P P g � � loso boo 3�0 <br /> 2. Detcrmine liquid volume of pipe,/7. gallons}xr 1(x)fc�ct. 8 1200 675 408 «,i�� <br /> 3. Mul�tiply length by valume: Drainback quantity= <br /> Ziv fcet x/743gallons/]00 ft.=�gailons. <br /> Pi d'umeta inchas Calluns r]00 fk� <br /> c. Total pump out volume equals dose volume+drainback 1 4.4 <br /> Z2.,S'—Qallons per dose+�gallons= .�1i0 gallons 1.25 7.77 <br /> 1.5 10.58 <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inches) 2 17.43 <br /> Depth(in)x gallons/inch(#2)= 2.5 24.87 <br /> 2�x�__��o 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 /> �x.75=��gallons <br /> Reservc Capacity <br /> 7. Calculate total gallons <br /> gallons over pump+gallons pumpout+gallons alarm+gallons mserve capcity <br /> #3+ #4c+#5+#6 <br /> 22 +ZGo +��+/,�_�gallons A�� <br /> Pump On <br /> 8. Total Depth (Total gallon dividcd by gallon per inch) <br /> Total Gallon(#7)+�allon/i ch(�t2) <br /> I�p�+��=,.5'� �t inches To 1 Pumpout Volumc <br /> Pump Off <br /> Pump Hcight <br /> 9. F7oat Scparation Distancc(equal total pumpout volumc) <br /> Total umpout volume(#4c)+�allons/inch (�t2) <br /> z�� :- Z� _��inches <br /> ,/ O t> � � �N "1 <br /> L/s� �`� � <br />