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DOSING CHAMBE SIZING _ <br /> 1. Determine area ; ,,.,,, <br /> .A Rectangle area = L x W , ! <br /> x = square feet = <br /> B. Circle area = r (3.14j x radius in feet x radius in feet �r���� � <br /> ��. <br /> 3.1-� x ft x ft = sqft �, <br /> C. Get area from manufacturer sqft �I, �/ Raditis� <br /> � <br /> 2. Calculate �a1lorLs per inch �� � <br /> / <br /> There are i.� gallons per cubic foot of volume, thereEore multiplv he area (lA, B or C) <br /> times the conversion ;actor and divide by 12 inches per foot to cal ulate callon per inch. <br /> Area x 7.� = 12 = sqft x i.� = 12 in/ft = .��5 gallon er inch <br /> Le al Tczrtk: <br /> 3. Calculate total tank volume � <br /> .a Depth from bottom of inlet pipe to tank bottom � 500 gallorts or <br /> E3. Total tank volume = depth from bottom of inlet pipe to tank bot om (3A) x gal/in (2) 100°o tlie Dnil�flow <br /> = 4G in x i'J ga1/in = E���gal Or <br /> Alterrtctting Pi��rip� <br /> -�. Calculate gallons to cover pump (with 2-3 inches of water coverin pump) <br /> (Pump and block height (inch) + 2 inch) x gallon/inch �'� A-l: EshmeledSewageAowsinGallonsperDay <br /> ( G� in +2 in} x .�S eal/in = .,�'�' eallon � <br /> --� number of � <br /> i <br /> � bedrooms Gau I Class II Ciass III'I Clau IV <br /> �. Calculate total pumpout volume � �� r� � � I <br /> <<� ��u � �,'� � <br /> A. Select pump size for�-5 does per day. Gallon per dose = gpd (s e�iqt�re A-1) 3 d�; 'CC� ' <'a ' , n� I <br /> / doses per day = --C� :y gpd = � doses/day = /.Z� gallons a �p 3%� .� ; vci�es <br /> E Calculate drainback � ; � � ;�; ��� �;� � �.r� <br /> 1. Determine totai pipe length%'�2 feet 6 rp ��; ! �v^ i �'i�w, <br /> �. Determine liquid volume oE pipe,(��gal per Et (see figi�re E-'�O) � �� 1 !�; c� 'i0 i �I,on'a � <br /> 3. Drainback quantity =�5� ft (5B1) x�ga1 per ft(5B2) = ga] � 2 � 1^x� �;� "G8 � c�_�;r< ,i <br /> C Total pt�mp out volum = ose volume (5A) +drainback(�B3) <br /> �al + �al = -s L Total gallon � E-?0: Volume of Liauid ia Pipe � <br /> 5. Float separation distance (using total pumpout volume) � Pipe Diameter� �allon�per foot� <br /> Total pttmpout volume (�C) = gal/inch (?) itl {��� ! I <br /> J��gal = .�S gaf/in= �:�`�L inch 1 i 0.0-�� � <br /> ' 1?5 i 0.078 ; <br /> 7. Calculate volume for alarm (typically 2 to 3 inches) 1.� I 011 � <br /> Alarm depth (inch) x gallon/inch (2) _ ?_in x ��eal/in) _ � !�' gal ? Q,l� I <br /> 2.� 0.?� � <br /> S. Calculate total gallon = gallons over pump (4) + gallons pumpout ( C) + gallons alarm (7) � I (��g , <br /> �3c'�C%' ga] +��gal + =..5��gal = S i g Ilons i �} O.bb I <br /> 9. Total Tank Depth = total gallon (8) =gallon/inch (2) ,�;���-Y;. <br /> S�_ga] = 2_s'�al/in = .t?� t/� in r; <br /> �i:-.%`:`;;��b<;`��Sr:,,;;y�;;•�^�,, }�,. <br /> inlet <br /> ` � 't� <br /> �:,.. <br /> i Recommended: p�pe �;�; ese�va capacity �� <br /> �; alarm cn <br /> I Calculate reserve ca acitv (75°% the d�ily flow) ;::� �t <br /> � _ _ _ _ _ _ _ _ �, controi <br /> ; Dail� tZow x .75 = �C_% x .75 = �S� gallons ��`�t - = <br /> pu pout volume� �� <br /> �r --- -p----p---- - - ?�` pum� or <br /> .� �,4 <br /> :<; um off� contrcl <br /> t= controi {' <br /> `'`il��,r,' �'t�r% `i" 7,"v,:;C"rz 7< �:'•� <br /> I nerebv tir�� tl;at I have completed this work in accordance with a plicable ordinances, rules and laws. <br /> � i<:d��l!.��. � ! r <br /> (signature) �� � (Iicense#) � � C/ ��-� �-f (date) <br />