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sizing�f Pumv Station <br /> l. Dctrrminc Surfacc Arca T <br /> Rectangle=Ama=L x W W'��h <br /> x = square feet l <br /> I,cngth <br /> Circle=Area=a x(Radius)2 <br /> 3.14 x x = squue feet R�dius <br /> Other=Get Surface Area from Manufacturer R=3.1a <br /> squaze feet <br /> 2. Calculate Gallons Per inch <br /> There am 7.5 gallons per cubic foot of volume,therefore you must multipiy the ama <br /> times the conversion factor and divide by 12 inches per fcx�t to calculate gallons per inch <br /> Ama x 7.5 gpft'+12 inchs per foot <br /> x 7.5+12 = z0 gallons/inch ���/� ' ��N� <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water covering pump) Es�ima�a!Sewage FI��in Gallons per day <br /> (Height(in)+2 inches) x allons/inch(#2) um r <br /> (�+ Z )x �C� = Z�galions of Type I Typc II Typc II[ Ty pc <br /> Iicdrooms 1 V <br /> 4. Calculate Total Pumpout Volume <br /> a. To maximize pump lifc select sum size for 4 to 5 pump operations per day. 3 450 300 218 � <br /> �gpd+4= /� gallons prr dose 4 600 375 256 °r`"° <br /> b. Calculatedrainback 5 750 450 294 "'�� <br /> 1. Determine total pipe length,�f t. 7 1050 600 370 1°'"' <br /> 2. Detcrmine liquid volume of pipe,�gallons per 1(x)fcet. S 1200 675 408 u,,°,,,�,� <br /> 3. Multiply length b olume: Drainback quantity= <br /> �feet x/�gallons/]00 ft._�gallons. <br /> c. Total pump out volume equals dose volume+drainback P+ a�i«« ��, c.��4 .ioo ru� <br /> �allons per dose+�gallons= ���gallons 1.25 7.77 <br /> 5 <br /> 5. CalculaM Volume for Alarm(typically 2 to 3 inchcs) 2 17.43 <br /> Depth�n)x gallons/inch #2>— 2,5 � <br /> x ZO =�gallons 3 38.4 <br /> 4 66.1 <br /> 6. Calculate Reserve Capacity(75%the daily flow) <br /> Daily ow(see page D-7)x.75= <br /> .75=�gallons <br /> Rcservc Capacily <br /> 7. Calculate total gallons <br /> gallons over pump+gallons pumpout+gallc�ns alarm+gallons mserve capcity <br /> #�#�#5/+�/ + � � Alarm <br /> �+�_�/gallons <br /> Pump On <br /> S. Tatal Depth (Total gallon dividcd by�allon per inch) <br /> Total al�f(#7)+gallon/inch(#2) 7b 1 Pum ut Volumc <br /> � /+�_�nches p° <br /> Pump Off <br /> Pump Hcight <br /> 9. F7oat Scparation Distancc(equal total pumpout volumc) <br /> Total pumpout volu (#4c)+gallans/inch(�i2) <br /> ,1Z-L+ z� _.�inches <br />