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Sep 12 06 10: 53a Josh Swedlund (9521873-3292 p. 9 <br /> � � <br /> ' DOSfNG CHAMBER SIZING <br /> Al!boxed�dangles must be entered,the resf will ba calculafed. <br /> Width <br /> 1. Determine area <br /> A. Rectangle area=l x W <br /> C_._� ft X ���ft = 0 ft� �' <br /> Len <br /> B. Circle area=3.14 x radius2 � <br /> 3.14 x Z ft = 0.0 it� <br /> C. Get area irom manufacture it� Radiu <br /> 2. Calculate galbns per inch <br /> There are 7.5 gaUons per cubic foot of volume,therefore mu�ipfy the area(1A,B or C) <br /> 6mes the conversion factor and divide by 12 inches per foot to ca�ulate gatlon per inch. <br /> Surface a►ea x T.5 I 12= 0 ft x 7.5 ( 12in/ft = 2� yallon pe�inch Legal Tank; <br /> 500 gallons or <br /> 3. Calculate total tank volume 100%the daily flow <br /> A• Depth f�m bottom of inlet pipe to tank bottom 47 in or Attemating Pumps <br /> B, Total t�k volume=depth irom bottom of hlet pipe to tank bottom(3A)x gaUn(2) ,�,,�,��,,,,��h����, <br /> = 47 in x 21 gaV'�n = 987.0 gallons � <br /> becioonti C7�I G�s It Cbcs IN qacs N <br /> 4. Ca�ulate gallons to cover pump(with 2-3 inches of water cove�ng pump) 3 a� � 2ie a� <br /> (Pump and blodc he' ht+2 inches)x gauon per inch 4 000 3�s zsa �a►,�� <br /> ( 12 + 2 in) x 21 gaUn = 294.0 gallons 5 750 �0 pa n"'B <br /> 6 900 525 3J2 Ctott�. <br /> 7 1050 600 370 �.or 11 <br /> rJ. �i�l�at8 t0� 8 120o 675 .1oe coxrrru. <br /> �1Uff1p0Ut VOIUIYI6 <br /> A- Select mp size ivr 4-5 doses r day. Gallo�per dose=gpd(see Figure A-1)l doses per day= <br /> 600 gpd ! �doseslday = 150 gal(ons <br /> B• Ca�ulate drainback <br /> 1. Determine total pipe lengfh 40.0 ft I'-� <br /> 2. Determine liquid volume of pipe, 0.17 �- <br /> gaVft(see figure E-20J <br /> 3. Drainbadc quantity= 40.0 ft(581) x 0.17 gaVft(5B2) &.8 y E-Z0: volumc uf L� u�d in Pi <br /> C. Total pump out vohlme=dOSe Volume(5A)+drainback(563) �'�pe,Diameter Gallons per fovt <br /> 150 gellons+ 6.8 galbns= 156.8 1 ` o.oa5 <br /> 1.25 0.078 <br /> 6. Ca�ulate Hoat separation distanoe(usl�g tot�pumpout wlume) 1.5 0.�1 <br /> Total purnpout volume(5C)/gaU'�nch(2) 5 0.25 <br /> 156.8 gal / 21 g�n = T.5 inch 3 0.� <br /> 4 0.66 <br /> 7. Ca�Culate volume ior alarm(typicalty 2-3 ind�es <br /> Alarm depth(irx;h) x gallon/'inch(2) =��in x 21 gal/'�n = 63 gal <br /> 8. Cafcuiate total gallons=galbns over pump(4)+galbns pu�out(5C)+galbns alartn(7) <br /> 294•0 gal + 156.8 gal + 63 gal = 513.8 gal <br /> 9. Total tank depth=total gallons(8)/galb�n(2)� � <br /> 513.8 gallons/ 21 ga�fn - 24.5 ine� <br /> �"ry�'� �• c�c�rk.c:u{7�7�.ity � <br /> :E atoim%�r� <br /> Recommended �` _" �carn�a <br /> Cak:ulate reserve capacity(75°k of the daily flow) �-��n�..u���avr,a} " <br /> E ..t.. . ..... . «�,imp��n <br /> Dai A�w x 0.75 = 600 x0.75= 450 aUons ! purr�F�,:,n t � f� conrra <br /> �� �^ontr�v-: <br /> 1 hereby 'ty th ave mple d this wvrk in accordance with aU applicable oMinances,n�les and laws <br /> signature)��� (Iicsnse#) (date) <br />