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.� <br /> , . . <br /> Sizing of PumF Station <br /> 1. Defiernune Surface Area T <br /> Rectangle=Area=L x W idcl► <br /> x = square feet L <br /> Length <br /> Circle=Area=R x(Radius}� <br /> 3.14 x a x a - /a square feet <br /> Radius �'g��A,Am <br /> Other=Get Surface Area from Manufactuner - s=3.14 �_ �� <br /> square feet " <br /> 2. Calculate Gallons Per Inch � <br /> 'Ihere are 75 gallons per cubic foot of volume,therefore you must muldply the area times the <br /> mnversion factor and divide by 12 inches per foot bo calculate gallons per inch <br /> Area x 7S+12 <br /> la.�� x7S+12 =7.8� gallonslinch <br /> 3. Calculate Gallons bo Cover Pump(with 2 inches of water covering pump) e�;�a s�,�r�.�c.�.a.a,r <br /> (Height(in)+2 inches) x gallons/inch � <br /> ��+ a„ �X 7.S$ __14/.3 gdl]pI1S �� �I �II�� t4 <br /> 4. Caiculate Total Pumpout Volume 2 �ou �s �so <br /> A. To maximize pump life select sump size for 4 to 5 pump operations per day. 4 � �s 2� � <br /> `f�0 gpd+4= I I a.5 gallons per dose 6 yo�o su �i ,�,L <br /> B. Calculate drainback � ioso 60o ro a <br /> 8 1200 673 108 ,y,�,.. <br /> � a. Deterntine total pipe length,a$O feet. <br /> b. Determine liquid volume of pipe,70.�gallons per 100 feet. (see page F 13) <br /> c. Multiply length by volume: Drainback quantity= 1 � <br /> aSo feet x I o.,� gallons+100 ft.=aq•� gallons. .s �oss <br /> G Total pump out volume equals dose volume+drainback Z - <br /> i i a�5 eallons per dose+ a 9.� gallons= /�{oZ•/ Total gallons 3 s 3s:� <br /> a �.� <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inches) <br /> Depth(in)x gallons/inch= � � ,y <br /> 3�� x �•as = a3.� gallons Resave G � <br /> 6. Calculate Reserve Capacity(75%'o the daily flow) � <br /> Daily flow(see page D-�x 0.75= p�P� <br /> 5a x 0.75=3375 gallons <br /> T Pumpouc Volume <br /> 7. Calculate total gallons P�„np oflr <br /> gallons over pump+gallons pumpout+gallons alarm+gallons reserve p,,,,,p g�;� <br /> 3+4+5+6 <br /> I'�1,3 +_I'��-I + oZ3.� + 337� = 1�4�5gallons <br /> 8. Total Depth (Total gallon divided by gallon per inch) <br /> Total Gallon+gallon/inch <br /> 6s�y,� + 7.g5 = �ri.�.l inches o i2 �7 � De6P �vmp�nll� Sr�4Tio� <br /> 9. Float Separation Distance(equal total pumpout volume) <br /> Total pumpout volume+gallons/inch • <br /> /3�f,3+7�S15 = �7. 1 inches <br /> �r <br />