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, ' �izine of Pump Station � <br /> T <br /> l. Detcrminc Surfacc Arca W;��, <br /> Rcctangle=Area=L x W 1 <br /> X = square feet �„s�, <br /> Circle=Area=n x(Radius� � <br /> 3.14 x x = square feet Radius <br /> a=3.14 <br /> Other=Get Surface Area from Manufacturcr <br /> square feet <br /> 2. Calculate Gallons Per lnch � <br /> There am 75 gallons per cubic foot of volume,therefore you must multiply the ama <br /> times the conversion factor and divide by 12 inches per foat to calculate gallons per inch <br /> Ama x 7.5 gpft'+12 inchs per foot � <br /> x 7.5+12 =�gallons/inch ���E' ��''l'1�� 5����s <br /> Estimata!Sewage Flows in Gallons per day <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water covering pump) �g�� <br /> (Height(in)+2 inches) x gallons/inch(#2) um r <br /> (�+��x Z�_�g�llons of Type I Typc II Type IIf Typc <br /> 3�� Bedrooms 1 <br /> 4. Calculate Total Pumpout Volume Z 300 225 180 <br /> a. To maximize pump life select sump size for 4 to 5 pump operations per day. 3 450 300 . 218 � <br /> ��� q 600 375 256 °r�" <br /> ��'O bPd+q=�15�_gallons pc.�r dose �•�� <br /> 5 750 450 294 ;� <br /> b. Calculate drainback 6 900 525 332 �Yr��• <br /> 1. Determine total pipe length, !�O feet. 7 to5o 600 370 °�� <br /> 2. Determine liquid volume of pipe,�7,4-gallons per 1(X)fec�t. 8 1200 675 408 wi,,,,,,� <br /> 3. Multiply length by volume: Drainback quantity= <br /> �/C7 fcet x 17��gallons/100 ft._�gallons. <br /> Pi d'umac u�chcx Cdlw r 100 fea <br /> c. Total pump out volume equals dose volume+drainback 1 4. <br /> �allons per dose+��gallons= �b 7 gallons 1.25 7.77 <br /> 1 <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inches) 2 17.43 <br /> Depth(in)x gallons/inch(#2)_ •5 ' <br /> � $ x � _�gallons 3 38.4 <br /> 4 66.1 <br /> 6. Calculate Reserve Capacity(75%'a the daily flow) <br /> Daily flow(see page D-7)x.75= <br /> 7b 4 x.75=S�Z gallons <br /> Reserve Capacity <br /> 7. Calculate total gallons <br /> gailons over pump+gallons pumpout+gailans alarm+gallons reserve capcity <br /> #3+#4c+#5+#6 <br /> 33G+ 287+�+56� _ ���P�gallons Alarm <br /> Pump On <br /> 8. Total Depth (Total gallon divided by gallon per i��ch) <br /> Total Gallon(#�+�allon/inch(#2) , To 1 Pumpout Volumc <br /> �+�_��inches Pump 0(f <br /> Pump Height <br /> 9. F7oat Separation Distancc(equal total pumpout volu�nc) <br /> Totai pumpout volume(#4c)+gallons/inch(#2) <br /> 2�1+ �d =_�,inches <br />