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Sizing of Pum.y Station <br /> 1. Dctcrminc Surfacc Arca T <br /> Rcctanglc=Arca = L x W W"��h <br /> 1 <br /> x = square feet I,cng�h <br /> Circic= Arca=n x(Radius)2 <br /> 3.14 x x = square feet K����� <br /> Other=Cct Surface Arca from Manufacturcr n=3.ta <br /> squaze feet <br /> 2. Calculate Gallons Pcr inch <br /> Thcre arc 7.5 gallons per cubic foot of volumc,thcrrforc you must multiply thc arca <br /> times the conversion factor and divide by 12 inches per foot to calculate gallons per inch <br /> Ama x 7.5�pft'+12 inchs per foot <br /> x 7.5+12 =�� gallons/inch <br /> 3. Calculate Gallons to Cover Pump(with 2 inchcs of watcr covcring pump) Estimata!Scwagc Flows in Gallons per Jay <br /> (Height i +2 in es) x allons/in (#2) �g�� <br /> � � �_���� um r <br /> �+ )x � � OV gallons of Typc I Typc I( Typc III Ty pc <br /> Bedrooms I V <br /> 4. Calculate Total Pumpout Volume <br /> a. To maxim e pump lifc selec s sizc for 4 tc�5 pump operations per day. 3 450 300 218 � <br /> ?�Q gpd+4=,��gallons per dose 4 600 375 256 �r m� <br /> valuet <br /> b. Calculate drainback S 750 450 294 ;,, <br /> 6 900 525 332 �����. <br /> 1. Determine total pipe length�0 f-Jee��t. 7 1050 6W 370 <br /> 2. Determine liquid volume of pipe/�Y�_gallons per 1(x)fc�ct. 8 1200 675 408 �„���„� <br /> 3. Multi 1 lcngth b volume: Drainback itity= <br /> �fcet x���gallons/]00 ft._�galions. <br /> P' d'wmaa inchc� Gdlcnx r 100 fut <br /> c. Total pu�o volume equals dose volu e+drainback . <br /> CJ allons per dosc+��allons��gallons 1.25 7.77 <br /> 1.5 10.58 <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inchrs} 2 17.43 <br /> De th(in)x a�ons/inch #2)= 2.5 24.87 <br /> �x� z =�gallons q ��.1 <br /> 6. Calculate Reserve Capacity(75% the daily flow) <br /> Dail flo (see page D-7)x.75= <br /> �� x.75=��gallons <br /> Rcservc Capacity <br /> 7. Calculate total�allons <br /> gallons over pump+gallons pumpout+gaiicros alarm+gallons rcserve capcity <br /> �3+ �c+�5 + ��z _ ���� g Alarm <br /> Z + +�+ iv � allons <br /> Pump On <br /> 8. Total Depth (Total gallon divided by�allc�n per inch) <br /> Tota�n(#t7)+�allo nch(#2) To 1 Pumpout Volumc <br /> + ZO inches Pump OfF <br /> Pump Hcight <br /> 9. Float Scparation Distancc(equal total pumpc�ut vc�lumc) <br /> Total umpout volume(#4c)+gallons/inch(#2) <br /> /�+�_�inches <br />