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F-22 <br /> Sizing of Pum� Station <br /> ,__.___.__.._...,._. _ , <br /> 1. Determine Surface Area T <br /> Rectangle=Area=L x W '� ti(r 5� /�DO C�,41�. Width <br /> �x 5 -_�square feet �', L <br /> Length —� J; <br /> � —__._.__.__...._.____._.__.__�__._.__._..____, <br /> Circle=Area=n x(Radius� , <br /> 3.14 x x = square feet <br /> Radius <br /> Other=Get Surface Area from Manufacturer n-3.14 <br /> �_square feet <br /> 2. Calculate Gallons Per Inch (,( 5� 1 00 O �f�� P�J�f��nJ�j /`��K <br /> There are 7S gallons per cubic foot of volume, therefore you must mu`ltiply the area times the <br /> conversion factor and divide by 12 inches per foot to calculate gallons per inch <br /> Areax7.5+12 <br /> 3S x 7.5+12 =o�a gailons/inch <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water covering pump) ���Sewage Flow in Gallons pa Day(gpd) <br /> (Hei�h�(in)+2 inches) x gallons/inch Number <br /> ( � • + a„ �x a o�- =3 4�o gallons a��°�5 �`I 'rY�II "iYa�in ry��v <br /> 2 300 7Z5 180 sos <br /> 4. Calculate Total Pumpout Volume 3 aso 30o zis � <br /> 4 600 375 256 <br /> A. To maximize pump life select sump size for 4 to 5 pump operallons per day. 5 �so aso z9a ",�' <br /> �oo �+4 = /5 O gallons per dose 6 io o � 3�0 "°• <br /> B. Calculate drainback s tzoo 6�s aos �" <br /> a. Determine total pipe length,Z-(c0 feet. <br /> b. Determine liquid volume of pipe,/0•5 gallons per 100 feet. (see page F-13) . ,.,,..„s. ��,,,, ,��. <br /> c. Multiply length by volume: Drainback uantity- � 4•4 <br /> t. �.r <br /> ��feet x/O,Sg gallons+100 ft.=a 7, gallons. .ss �o:ss <br /> C. Total pump out volume equals dose volume+drainback 2 <br /> 25 24.87 <br /> ��o $allons per dose+ a7�5 gallons= �TJ. 5 Total gallons 3 3s.a <br /> 4 �.� <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inches) <br /> Depth(in)x gallons/inch= � <br /> � Rexrve Capacity � <br /> .� x�2_Z�_�gallons <br /> 6. Calculate Reserve Capacity(75%'o the daily Elow) Al,�, <br /> Daily flow(see pag e D-�x.7S= �mp� <br /> x.75= 360 g�lons <br /> To Pumpouc Volume � <br /> 7. Calculate total gallons �,I„p o�f <br /> gallons over pump+gallons pumpout+gallons alarm+gallons reserve pump Heighc <br /> 3+4+5+6 <br /> 39� + 177 5 + �o(o + ` 60 = Do0 gailons <br /> 8. Total Depth (Total gallon divided by gallon per inch) <br /> Total Gailon+g�lon/inch <br /> Ooo +�__�inches <br /> 9. F1oat Separation Distance(equal total pumpout volume) <br /> Total pumpout volume+gallons/inch <br /> 1�_+�� _ �, inches <br />