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a, ` � • <br /> izing of Pumv Station <br /> T <br /> l. Detcrminc Surfacc Arca �,y���h <br /> Rectanglc=Arca= L x W l <br /> x = square feet �,��s� <br /> Circle= Area=n x(Radius� <br /> 3.14 x x = s.quue feet Rndius <br /> a=3.14 <br /> Other=Get Surface Area from Manufacturcr <br /> square feet <br /> 2. Calculate Gallons Pcr Tnch <br /> Thcre am 7.5 gallons per cubic foot of volume,thcrcfore you must multiply the arca <br /> times the conversion factor and divide by 12 inches per foot to calculate gallons per inch <br /> ,. <br /> Area x 7.5 gpft'+12 inchs per foot .. . :, ,.'�xK� ;;, <br /> . . ,., � ..� � �+(, ub�rfiH T �!%+ , M i.:Wtn�'n�CW�i�' ).� .i��,. <br /> � _,. .. .,, ,y;�i '' /y.'„�"/ ' .. . ,. <br /> x 7.5+j2 = � CJ gallons/ihch ,�'/� ��s1i'r�E ���at �i'i�� <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of watrr cnvcring p�mp) �uma�«!Scwage Flows in Calluns per day <br /> (Height(in)+2 inches) x gallons/inch(�!2) um r. `�) <br /> (�/�, +�_)x��=Z�O$allons of Type I Typo II 7ype UI Typc <br /> Bcdrooms ! <br /> 4. Calculate Total Pumpout Volume ` 2 , . 300 225 180 <br /> a. To maximize pump life select sum size for 4 to 5 pump operations per day. 300 218 � <br /> ��ciiC��' gpa+4=1� gallons prr dos� � . 45U 294 ���„�' <br /> b. Calculate drainback i 6 900 325 332 ��r��: <br /> 1. Determine total pipc length,��feet.. • 7 1050 600 370, ''" <br /> 2. Detcrmine liquid volume of pipe;/��gallons per 1(�fert. 8 �200 � 675 408 �°,.;,,� <br /> 3. Multi ly length b olume: Drainba�k quantity= <br /> �feet x�gallons/]00 ft._�gallons. <br /> _ _ r ar�aa i� c.n� ��oo r� <br /> c. Total pump out volume equals dose volume+draintk�ck , <br /> /SC� gallons per dose+ // gallcros=�Pallons 1,25 7,77 <br /> 5 <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inches) ,�2 �, 17.43 <br /> _ `-�s rr <br /> Depth(in)x gallons/inch(#2)— • <br /> � x Z� _�8allons 3 38.4 <br /> 4 :: 66.1 <br /> 6. Calculate Reserve Capacity(75�thc daily flnw). ��- <br /> Daily flow(seepa�e D 7.)ic�75—;,- .. _ �f:. t �. .,� �` 4 �R, .�i . <br /> -•���'x.7�"= 4So ga��ons z <br /> Rcservc Capacity <br /> 7. Calculate total gallons <br /> ' �allons over pump+gallons pumpout+gallc�ns Alarm+gallons reserve capcity, <br /> �t3+tl4c+!!5+#6 ` <br /> z�—+�-(��+-�+�=�8allons , Alarm <br /> 'Pump On <br /> S. Total Depth (Total gallon dividcd y gallon per inch) _ <br /> Total�+(zO gallo����i�h(�! ) '' 'Ib I Pumpout Vc�lumc <br /> �.�. �nc es _ Pump Otf _ <br /> Pump Hcight <br /> 9. Float Separation Distancc(equal total pumpout vc�lunu�) <br /> Tc�tal pumpout volume(#4c)+gallons/inch(�2) : <br /> %�_+ ZO =_�inches <br />