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� DOSING CHAMBER SIZING <br /> All bvxed rectang/es musf be entered,the rest wil!be cakulated. �d� <br /> '1000 ga0on darwin precast <br /> 1. Deterrtane�ea <br /> A Rectangle area=L x W <br /> � ft x �ft = 0 ft Length <br /> B. Cirde area=3.14�.radiusz <br /> 3.14 x 2 ft = 0.0 ft2 <br /> C. Get area irom manufacture ft Radiu <br /> 2. Calculate g�lons p�inch <br /> There are 7.5 gailons per cubic foot of volume,therefore multiply the area(1A,B or C) <br /> times ihe conversion fac�or and divide by 12 inches per foot to cakxilate gallon per inch. <br /> Surface area x 7.5/12= 0 fl x 7.5�! 12iNft = 25 g�lon per inch Legal Tank: <br /> •,4ssumed 25 yallons per;ncn � 500 gallons or <br /> 3. C�culate total t�k vdume 100%the daily flow <br /> A. Depth iran bottom of inlet pipe to tank bottom = 52 in or Altemating Pumps <br /> B. Total t�k volume=depth irom boriom of inlet pipe to tank bottom(3A)x g�n(2} A_,:�,�,o�g�;��,,,�,�;;��,p,r, <br /> = 52 in x 25 g�n = 1300.0 galbns �a <br /> becNooms CJass I pats fl pas IM pas tV <br /> � <br /> 31ri1 72� l80 60% <br /> 4. Calculate gallons to cover purt�(with 2-3 inches of water covering pump) s .,�o soo z�s o+mo <br /> (Pump�d block h ' ht+2 inches)x gallon per inch a rou s�s �ss yoe,e: <br /> s �su n�o 2va i�tne <br /> ( 16 + 2 in) x 25 g�n = 450.0 gallons a �u �zs 332 ca��. <br /> 7 1��(1 COil 3TJ �,or MI <br /> ( 8 � 12CU C75 408 cMum�s. <br /> 5. Calculate tot�pumpout volume � � �-� <br /> A Select mp size for 45 doses per day. Gallon per dose=gpd(see Figure A-1)/doses per day= <br /> 750 gpd ! �5 �ses/day = 150 gallons <br /> B. C�culaie drainback <br /> 1. Determine total pipe length 65.0 ft � <br /> 2. Determine liquid volume of pipe, gaVft(see BgUre E-20) <br /> 3. Drai�baCk qua�lGty= 65.0 ft(5B1) x 0.17 gaUft(5B2) 11.1 v 1:2c): volmnc uf I.i uid in Ni <br /> C. Totalpumpoutvolume=dosevolume(5A)+drainback(563} ; I'ipeDiameter Gallonsperfoot <br /> � S <br /> 150 gallons+ 11.1 gallons= 161.i i � u.oa5 <br /> t �.Zs o.o�s <br /> 6. Calculate float sepazabon distance(using total pumpout volume) ; �2' p;j j <br /> Total pumpout volume(5C)/gaUnch(2) � 2.5 0.25 <br /> 161.1 gal / 25 g�n = 6.4 inch ! 3 0.38 <br /> � 0.66 <br /> 7. Calculate volurr�for alarm(typically 2-3 inches <br /> Alarm depth(inch) x gatlonfinch(2) _ �in x 25 g�n = 75 gal <br /> 8. Calcu�ate total gallons=galbns over pump(4)+gallons pumpout(5C)+gallons alarm(7) <br /> 450.0 gal + 161.1 gai + 75 g� = 686.1 gal <br /> 9. Total tank depth=total g�lons(8)/galbNin(2) r��..r�.�>n<,t.�-. `� <br /> ,��.,. __._._:`<< <br /> 686.1 galbns/ 25 gaUin = 27.4 i•.+.,, � � ��...,.,�,�_,,_;,,.` - <br /> .'. .�♦__J___._- ��i.5irn••�n <br /> Recommended �€�#-- - --�-�: �'� ..��n�,:� <br /> _�. <br /> . j.•iFf+;':"±�t vcv�rna. ..._..-�;--. <br /> C�culate reserve capacity(75%of the daily flow) - <i...�............. F��:rnr.,�,n <br /> Dai flow x 0.75 = 750 x 0.75= 562.5 allons f r"��;s~�.�� , .. .-��€ ==�rarti <br /> �.. �..`.:���a�,_� "_-k�t-.'�i <br /> KRL'tFLtiLf.f.CGL:LSLFRf.Fi�iiJ <br /> I hereby oertify that I have oompleted this work in�cordance with�I applicable ordinances,rules and laws <br /> (signature) / 92l (license#) ��S'�` (date) <br />