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. DOSING CHAMBER SIZING <br /> { t f <br /> 1 �tisati� <br /> 1. Determine area I <br /> A. Rectangle area=L x W I !1 <br /> ---x = square feet �____ <br /> B. Circle area=n(3.14) x radius in feet x radius in feet <br /> 3.1.E x ___ft x It= ___sgft <br /> Radius <br /> C. Get area from manufacturer sgft <br /> 2. Calculate 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 ccalculate <br /> l ula e gallon <br /> lon per inch. <br /> Area x 7.5=12=___—__ ft x 7.5=12 in/ft = Psi--- Legal Tank: <br /> 3. Calculate total tank volume <br /> A. Depth from bottom of inlet pipe to tank bottom "' 500 gallons or <br /> x gal/in <br /> B. Total tank volume=depth from bottom of inlet pipe to tank bottom(3A) g / (2) 100% the Daily flowor <br /> in x gal/in= gal Alternating Pumps <br /> 4. Calculate gallons to cover pump(with 2-3 inches of water covering pump) A-1:E�inadedSewageHo�rstnGa -- <br /> (Pump and block height(inch)+2 inch) x gallon/inch <br /> Day <br /> ( t p in+2 in)x £ ) gal/in= 36-0 gallon t Clan! pass 8 passe ass N <br /> 2 30p 715 180 60� <br /> 5. Calculate total pumpout volume , 7h 121880 80% <br /> A. Select pump size fo,r�k�-.5.��does per day. Gallon per dose=gpd(figure A-1) 3 6 315 � <br /> / doses per day=�0 gpd T doses/day= 113 gallons 5 ft0 450 into <br /> B. Calculate drainback 6 9m 525 Clad <br /> 1. Determine total pipe length,. . feet Chat <br /> 2. Determine liquid volume of pipe, .1 gal per ft(see figure E-20) a 1050 525 3701050 675 dDc�xttli <br /> 3. Drainback quantity= —ft(5B1)x -l7 gal per ft(5B2)=mal <br /> C. Total 1u1n out volume=do�avolume(5A +Tota gallon E-20: Volume of Liquid in Pipe <br /> ------� foot <br /> Pipe Diameter Gallons per <br /> 6.Float separation distance(using total pumpout volume) tti[jtes <br /> Total pumpout volumej5C)=gal/inch(/). 1 0�� <br /> kg---1--gal= ,2- _mal/in=_---.-5 inch 1.25 0.078 <br /> 15 0.11 <br /> 7. Calculate volume for alarm(typically 2 to 3 inches) 2 0.171 <br /> Alarm depth(inch)x gallon/inch(2)= 3 in x-r�--Sr1/in)_ /SPgal <br /> 2.5 025 <br /> 0 <br /> 8 <br /> 4 +gallons um out(5C)+gallons alarm(7) 3 038 <br /> 8. Calculate total gallon=$a�jO over <br /> al+ m epump = p O gallons <br /> _32_9 Q gal + at� �=g —_-.---g <br /> 9. Total {Tank Depth=total gallon(8)_gallon/inch(2) ( <br /> c7D gal �� gal/ln-- Z._--- :16r `iY{�jSt�j." 'fes: Yf;. <br /> — —v inlet <br /> pipe • ,. <br /> eserve coped • <br /> �t � alarm or <br /> Recommended: r.�. _ control <br /> P.',": �7 <br /> Calculate reserve capacity(75%the daily flow) <br /> '1/nt <br /> Daily flow x .75 =_ x.75 =" -g�O pumpout volume --- `i.:-'--- <br /> - pump on <br /> 11 pump off Jsir = control <br /> control ,fib I <br /> I hereby certify that I have completed this work in accordance with applicable ordinances, rules and laws. <br /> (signature) <br /> (license#) --(date) <br />