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07/21/2664 14:01 3262382343 HENTGES PAGE 10/14 <br /> SIZING OF PUMP STATION <br /> 1. Insert flow rate 750 �Ilons per day <br /> 2. Inse�t gallans per vertical inch fram tank manufacturer 25.0 gallons per inch <br /> 3. Gaiculat� galions t� cover pump sitting on 4 inch block with 2 inChes of water <br /> 4 in pad + 10 pump hgt 2 M2Q = 16.0 inches of wat�r <br /> 1�,6.,0 H20 X 25 gpi = 40I� gallons to cover pump <br /> 4. Calcufate totat pump out volume � <br /> a. Calculate gallons per dose based on 4 pumping intervais per day <br /> 750 flow divided by 4 = 187.5 gallons per dose <br /> b. Calculate d�ainb�ck <br /> (1) Pump pipe length & diameter = 40 length 2.0 in diam. <br /> (2} Determins liquid volume af pipe from chart per 100 feet = 17.43 <br /> PIPE DIAI�AET�R CyAL/100 FT PIPE d1AMET6R C,AL/100 FT <br /> 1.2� 7.77 2.50 2a.67 <br /> 1.50 10,58 3.00 38.40 <br /> 2.00 17.43 4.00 66.10 <br /> (3) Multiply pipe (ength by volume divided by 100 ta get drainback quantity <br /> 40.0 X 17.43 equals 697.2 / 100 = 7 gallons <br /> 5. Calculate total pumpout vplume by adding pump dose#4a plus d�ainback#4b3 <br /> 187'.5 gallons + 7 ga�llons = 194 gallons pump4ut volume <br /> 6. Calculate volume far alarm based dn 3 inches and tank GPI <br /> 25.0 gpi X 3 � 75 gallans <br /> 7. Calculate gallons to caver pump #3, pumpout volume#5, and al�rm votum�#6 <br /> 400 plus 194 plus 75 equals 669 gallans WITHQUT <br /> RESERVE CAP. <br /> 8. If LUG requires 75% daily flow as reserve capaciry, <br /> reserve capacity = 562,5 gallons <br /> 9. Minimum pump tank size WITHOUT reserve capacity equals 669 gailons <br /> 10. Minimu+�n pump tank size WITH reserve capacity equals 1232 ga{lons <br /> 11. Float seperation distance equals pumpout volume#5 divided by tank gpi #2 <br /> 194 divided 25.Q gpi = 7.8 inches tn tether float <br /> PAGE 8 OF 12 <br />