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DOSING CHAMBER SIZING <br /> All boxed rectangles must be errtered,the►esf will be cakulated. Width <br /> 1. Determine area <br /> A. Rectangle area=L x W <br /> �� ft x �ft = 0 f� Length <br /> B. Circle area=3.14 x radius2 <br /> 3.14 x 2 ft = 0.0 it� <br /> C. Get area from manufacture it� Radiu <br /> 2. Calculate galbns per inch <br /> There are 7.5 gallons per cubic foot of volume,therefore multiply the area(1A,B or C) <br /> 6mes the conversion factor and divide by 12 inches per foot to ca�ulate galbn per inch. <br /> Surface area x 7.5/12= 0� x 7.5 / 12in/ft = 29.41 gallon per inch Legal Tank: <br /> •PER DARWIN PRECAST 500 gallons or <br /> 3. Calculate total tank volume 100%the daily flow <br /> A. Depth from bottom of inlet pipe to tank bottom 52 in or Afternating Pumps <br /> B. Total tank volume=depth from bottom of inlet pipe to tank bottom(3A)x gaUn(2) ,4i:c�,,,,,,d a.�o•a�.ti s�v oou <br /> = 52 in x 29.41 gal�n = 1529.3 galbns �� �� �� ��� �N <br /> 4. Calculate gallons to cover pump(with 2-3 inches of water covering pump) a � ��'oo i�a d�"i►,. <br /> (Pump and block he' ht+2 inches)x gallon per inch s � � �4 �` <br /> ( 12 + 2 in) x 29.41 gal�n = 411.7 gallons � � � � �'°'� <br /> � ,oso eao �o �.a.a <br /> e �2m e�s eoe �a►.f... <br /> 5. Ca�ulate total pumpout volume <br /> A. Select pump size for 4-5 doses per day. Galbn per dose=gpd(see Figu�A-1)/dases per day= <br /> 750 gpd 1 04 doseslday = 187.5 gallons <br /> B. Calculate drainback <br /> 1. Determine total pipe length 205.0 ft � <br /> 2. Determine liquid volume of pipe, gaUft(see figure E-20) � <br /> 3. Drainback quanGty= 205.0 ft(561) x 0.17 gal/ft(562) 34.9 y E-20: V�lume of Li uia ia Pi e <br /> C. Total pump out volume=dose volume(5A)+drainback(583) �pe��eter Gallons per foot <br /> 187.5 gallons+ 34.9 gallons= 222.4 1 0.045 <br /> 1.2.5 0.078 <br /> 6. Calculate float separation distance(using total pumpout volume) 1.5 0.11 <br /> 2 0.17 <br /> Total pumpout volume(5C)I gal�nch(2) 2.5 0.25 <br /> 222.4 gal / 29.41 ga�n = 7.6 inch 4 o.b�b <br /> 7. Ca�ulate volume for alartn(iypically 2-3 inches <br /> Alarm depth(inch) x gallon�nch(2) = 3 in x 29.41 gaUn = 88.23 gal <br /> 8. Calculate total galbns=gallons over pump(4)+gallons pumpout(5C)+gallons alartn(7) <br /> 411.7 gal + 222.4 gal + 88.23 gal = 722.3 gal <br /> 9. Total tank depth=total gallons(8)/gallon�n(2) ' <br /> 722.3 gallons/ 29.41 gal�n = 24.6 p� <br /> � e,s�rv�e ca�cit ` <br /> � aiann on <br /> Recommended ; _ oont�a <br /> o pimpout vd ume <br /> Calculate reserve capacity(75/o of the daily flow) � __�____________ __ _ punp on <br /> Dail flow x 0.75 = 750 x 0.75= 562.5 allons € ��� � coMra <br /> I hereby certity I completed this work in accordance with all applicable ordinances,rules and laws <br /> (si9nature) l l`� (license#) Z'27z� (date) <br />