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, • DOSING CHAMBER SIZING <br /> All boxed rectangles must be entered,the rest wil!be calculated. Width <br /> '1000 gallon darwin precast <br /> 1. Determine area <br /> � A. Rectangle area=L x W <br /> � ft x �ft = 0 ft2 Length <br /> B. Circle area=3:'l4�C radiusz <br /> 3.14 x 2ft = 0.0 ft <br /> C. Get area irom manufacture ft2 Radiu <br /> 2. Caiculate gallons per inch <br /> There are 7.5 gallons per cubic foot of volume,therefore multiply the area(1A,B or C) <br /> times the conversion factor and divide by 12 inches per foot to calculate gallon per inch. <br /> Surfac�area x 7.5 I 12= 0 fl� x 7.5 I 12iNft = 25 gallon per inch Legal Tank: <br /> 'Assumed 25 gaflons per inch � 500 g8110t1S 0� <br /> 3. Calculate total tank volume 100%the daily flow <br /> A Depth from bottom of inlet pipe to tank bottom = 52 in or Altemating Pumps <br /> B. Total tank volume=depth from bottom of inlet pipe to tank botlom{3A)x ga�n(2) {�p:�i:-�%;,,;a,,�s�ii���c��o«iiw 4�� <br /> = 52 in x 25 gaUn = 1300.0 gallons � � -� <br /> �.,�„��.a__ .._.� <br /> � cearoo�a � c�s i aa�:ri aaes�u aas:�v <br /> 2 I �DO 225 !BU 60�G <br /> 4. Calculate gallons to cover pump(with 2-3 inches of water covering pump) � ��o �au s�e af the <br /> (Pump and block hei ht+2 inches)x gallon per inch 4 t�� �'' 2s' "°a,�s <br /> 5 75U AS(1 ia4 in the <br /> ( 16 + 2 in) x 25 g�n = 450.0 gallons � �u� �25 � 3s2 ;���. <br /> � 7 IC£�D 60U � 37U 9.o:ql <br /> � 8 12W h75 4U9 cctuTrn. <br /> 5. Calculate total pumpout volume � �- <br /> A. Select ump size for 45 doses per day. Gallon per dose=gpd(see Figure A-1)l doses per day= <br /> 750 gpd / �5 doses/day = 150 gallons <br /> B. Calculate drainback <br /> 1. Determine total pipe length 145.0 ft � <br /> 2. Determine liquid volume of pipe, gal/ft(see 6gure E-20) <br /> 3. Drainback quantity= 145.0 ft(581) x 0.17 gaUft(5B2) 24.7 v �`'-�� v"�uo�c��f l.i uid in Pi�e <br /> C. Total pump out volume=dose volume(5A)+drainback(5B3) � I'ipr Diameter Gallons per(oot <br /> 1. s <br /> 150 gallons+ 24.7 gallons= 174.7 i t � U.O�tS <br /> 1.25 0.078 <br /> ! I.� 0.11 <br /> 6. Calculate float separation distance(using total pumpout volume) ; 2 p.�7 <br /> Total pumpout volume(5C)I galfinch(2) � 2.5 U.25 <br /> 174.7 gal ! 25 ga�n = 7.0 inch � � �'�� <br /> 4 O.n6 <br /> 7. Calculate volume for alarm(typically 2-3 inches • <br /> Alarm depth(inch) x gallonfinch(2) _ �in x 25 galfin = 75 gal <br /> 8. Calculate total gallons=gallons over pump(4)+gallons pumpout(5C)+gallons alarm(7) <br /> 450.0 gal + 174.7 gal + 75 gal = 699.7 gal <br /> 9. Total tank depth=total gaUons(8)/gallo�n(2) T�-�-�-:�.RY���,--. .¢��� <br /> :<<..«:<<.,�_<<:.,..., <br /> ;;a..., -, __,:: <br /> 699.7 gallons! 25 galfin = 28.0 .-., -�� � � i,� <br /> .: <br /> ,..�:.;� .. ,,. .. ..._. . <br /> ,.. ,,. <br /> .� _�_ �:�•.,,��:,...,. <br /> ' �!rn�.n <br /> Recommended -- _ _ -�-+;� � _ r�r,�.-:+ <br /> �F:y.,�� a�rn. , <br /> Calculate reserve capacity(75°h of the daily flow) F� . . �i: F�rrn :�n <br /> Dail flow x 0.75 = 750 x0.75= 562.5 allons �[;I . �=�1_���>�'��.:.t i:� =.�:>r�rr,_i <br /> _•nn�..�.- i€s <br /> ��4�. �s�l... <br /> �c•FutSSi3.Lil:LiSi.lw�6wFGi.C{.CGF F. <br /> I hereby ce 'fy that I ha e com leted this work in accordance with all applicable ordinances,rules and laws <br /> (signature) �� (license#) a�/�"d�(date) <br />