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• ' Sizing of Pump Station <br /> 1. Dctcrminc Surfacc Arca T <br /> Rectanglc=Arca=L x W W"��h <br /> x = square feet I,cn ih 1 <br /> s <br /> Circle= Area=a x(Radius)2 <br /> 3.14 x x = squue feet Radius <br /> a=3.14 <br /> Other=Get Surface Area from Manufacturer <br /> square feet <br /> 2. Calculate Gallons Per Inch <br /> Thcre am 7.5 gallons per cubic foot of volume,therefore you must multiply the ama <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 /> x 7.5+12 =�gallons/inch <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water covering pump) Estimatat Sewage Flows in Gallons per d•ry <br /> (Height(in)+2 inches) x gailons/inch(#2) �g�� <br /> um r <br /> (1�+_�)x�_�gallons of Type I Typc I[ Typc I►I Typc <br /> Bedrooms !V <br /> 4. Calculate Total Pumpc>ut Volume <br /> a. To maximize pump lifc select sum sizc for 4 to 5 pump operations per day. 3 450 300 218 � <br /> �gpd+4=_L�_gallons}x�r dosc 4 600 375 256 °r`"` <br /> �yi�� <br /> b. Calcu ate drainback 5 750 45U 294 ;,, <br /> 1. Determine total � e len th, �� 6 900 525 332 �Yr��. <br /> P P g .�'�'t 7 1�5� 6W 370 II or <br /> 2. Determine liquid volume of pipe,/�gallons per 1(x)fcrt. 8 1200 675 408 �„w,,,,5 <br /> 3. Multi 1 lcngth by v lume: Drainback quantity= <br /> ��fcet x�gallons/]W ft.__�gallons. <br /> Pi di�meter inches Gallanx t!00(cct <br /> c. Total pump out volume equals dose volume+drainback 1 4.4 <br /> �'�,7_.gallons per dosc+�3 �allcros=�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/inc�)= 2.5 24.87 <br /> �_x�� gallons q ��.1 <br /> 6. Calculate Reserve Capacity(75% the daily flaw) <br /> Dail�flow(see page_ D�7)x.75= <br /> �x.75= �gailons <br /> Rcservc Capacity <br /> 7. Calculate total gallons <br /> �allons over pump+gallons pumpout+�ailons alarm+gallons rescrve capcity <br /> �t3+#t4C+#5+#6 � _/� _�g <br /> ����+L�+ +�_ alloiis Alarm <br /> Pump On <br /> 8. Total Depth (Total�allon dividcd by gallon per i�ich) <br /> Tota G llon(#7)+gall �inch(�t2) To 1 Pumpout Volumc <br /> �+�__��inches Pump Off <br /> Pump Hcight <br /> 9. Float Scparation Distancc(equal total pumpout volinnc) <br /> Tota umpout volumc(#4c)+gallons/inch(#2) <br /> ����__�inches <br />