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izing of Pump Station. <br /> 1. Determine Surface Arca T <br /> Rectangle=Area = L x W Width <br /> 1 <br /> x = square feet l s <br /> en th - <br /> Circle= Arca=n x(Radius) <br /> 3.14 x x =1 square feet Radius <br /> Other=Get Surface Area fr m Manufacturer a=3.14 <br /> square eet <br /> 2. Calculate Gallons Per inch <br /> There are 7.5 gallons per cu is foot of volume,therefore you must multiply the arca <br /> times the conversion factor nd divide by 12 inches per foot to calculate gallons per inch <br /> Arca x 7.5 gpft 3+12 inchs?per foot <br /> x 7.5+12 = C7 gallons/inch <br /> 3. Calculate Gallons to Cove Pump(with 2 inches of water covering pump) <br /> (Height(in)+2 inches) x allons/inch(#2) <br /> Estimates!Sewage Flows in Gallons per day <br /> (gpd) <br /> ( (� + Z )x =Q Z� allons Number <br /> g Type 1 Type II Type III Type <br /> Bedrooms <br /> I <br /> 4. Calculate Total Pumpout olume <br /> a. To maximize pump life _ cj p size for 4 to 5 pump operations per day. 3 450 300 25 218 <br /> gpd /' gallons per dose 4 600 375 256 ur the <br /> values <br /> b. Calculate drainback 5 750 450 294 i„ <br /> 1. <br /> 1. Determine total pipe le�hgth, 40feet. 7 0 0 525 332 �Yrw <br /> 1111" <br /> 2. Determine liquid volume of pipe,/7.4,;gallons per 1(X)feet. 8 1200 675 408 coi i <br /> 3. Multiply length b vol me: Drainback quantity= <br /> 44 CD feet x O.43 allons/100 ft.= 7 gallons. <br /> c. Total pump outs m equals dose volume+drainback Pipe diameter(�on�) Gallons 4900 rsel <br /> D X gall ns per dose+ 7 gallons= /9vr-t gallons 1.25 7.77 <br /> 1.5 10.58 <br /> 5. Calculate Volume for larm(typically 2 to 3 inches) 2 17.43 <br /> Depth(in)x gallons/i ch(#2)= 2.5 24.87 <br /> x 20 . 40 gallons 34 38.4 <br /> 66.1 <br /> 6. Calculate Reserve Capacity(75% the daily flow) <br /> Dail flow(see page 1 -7)x.75= <br /> A.S� x.75=S_ Z gallons <br /> 7. Calculate total gallo, s T Reserve Capacity <br /> gallons over pump gallons pumpout+gallons alarm+gallons reserve capcity <br /> #3+#4 c+#5+#6 <br /> z 40 + - b +4co +5702 =k'S7gallons y Alarm <br /> y Pump On <br /> 8. Total Depth (Total gallon divided by gallon per inch) <br /> Total Gallon(#7)+gallon/inch(#2) To al Pumpout Volume <br /> /b 3,? + O =SZ inchesTr Pump Off <br /> Pump Height <br /> 9. Float Separation Distance(equal total pumpout volume) <br /> Total pumpout v ume(#4c)+gallons/inch(#2) <br /> /��+ 0 VO inches <br /> •/6-' o / A4077, di 42-42 g�',2- <br />