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' ��:" OSTP Pump Tank UNIVERSITY <br /> MlnnesotsPolluUon Desi n Worksheet �-�- <br /> ContrdAgency g OF iV11NNE50TA �'ti. <br /> DETEW+UNE TANK CAPAGTY AND OIMENSIONS projett 10: v 05.13.14 <br /> 1. A. De5lgn Ptow(Design Sum.1,4): 600 GPD <br /> B. Min.required pump tank capacity: 1000 Gal C.Recommended pump tank capacfty: 10U0 Gal <br /> D. Pump tank deuription: Demand m Pressure <br /> lNEASURED 7AHK CAPACIIY existi tanks: <br /> 2, A. Rectangte area=Length�L�X Wfdth(W) <br /> 4A ft X 7.p ft = 28,0 {t1 Width <br /> B. Cirde area=3.14rx(3.t4 X radius X radius) <br /> 3.14 X �-�2 h = �ftz �-----► <br /> Length <br /> �, Calculate Galtons Per i�ch. Muttiply ihe area from 1.A or 1.B, by 7.5 to determfne the gallons per faot <br /> the tank hotds and divide by 12 to wlcutate the galtons Qer inch. <br /> z8•� ft2 X 7,5 gaVft' t 12 tn/ft = 7�•5 Gatlons per fnch �------ <br /> Radi <br /> D. Calcutate Toml Tank Volume <br /> Depth Jrom bottom o/tntet plpe to tonk bottom: A9 in <br /> Totot 7onk Votume-Depth from 6ottam oJ inlec ptpe (Line 4.A)X Golionsllnch (Line 2) <br /> 49 in X 17.5 Gattons Per Inch= 857.5 Galtons <br /> MANUFACTURER'S SPECIFIED TANK CAPACITY(when avallabie): <br /> 3. A. Tank Manufatturer: DeI ZOtto Note:Deslgn calcuiaHons are ba�ed on <br /> 8. Tank Modet: «+fs��f�r tank.Subsdtutfrrg o <br /> dlJJerent tank modef witl chnnge the <br /> C. Capacityfrommanufacturer: 1000 Galtons P'�PJloacortJmersettings.Contnct <br /> designer tJ changes are necessary. <br /> D. GaUons per inch from manutacturer. 17.5 Gallons per inch <br /> E. Liquid depth of tank from manufacturer: 49.0 inches <br /> DETERAAINE DOSING VOLUME <br /> 4• Calculate Yolume co tover Pump (The fitet of the pump must be at teast 4•tnches from[he bottom of the pump <br /> tank&2 inches of water cwering the pump is recomrr�ndedl <br /> (Pump and 6lock height�2 inches�X Galtons P'ar Inch (2C or 3E) <br /> � 10 in + 2 inches) X 17.5 Gallons Per Inch = 210 Gallons <br /> 5. Minimum De!lvered Volume= 4 X Volume of Distribution Piping: <br /> -ttne t7 aJ tbe Pressure Distrlbutlon o�Ltne 11 of Non•7evel 98 Galtons(mtnimum doae) <br /> 6. Calculate Mnximum Pumpout Volume (25%of Design Flow) <br /> Destgn Ftow: � GPD X 015 = 150 Gallons{maximum dose) <br /> 7, Seiect o pumpou[volume that meets boih Mfnimum and Maxlmum: 100 Gallons <br /> 8. Caiculate Doses Per Day=Desfgn Flow�Detivered Volume <br /> 60o gpd� 100 � VWur�r of Liquid 3rr <br /> gal = b onses <br /> 9. Caiculate Drainback: ��a <br /> A. Dtameter aj Supply Mpe= �inches ��4' ' �=i�1�� <br /> Diamet�r Per F�oo�t <br /> B. Length of Supply Pipe- 40 feet <br /> ��llCtltS� (�s3�bM�; <br /> C. Volume oJ Liquld Per L►neot Fooi of Pipe= u.no Gallonslft 1 0.045 <br /> D. Drctnbock=l.ength oj Supply Plpe X Volume of LtqWd Aer Lirnc!Foot o/Plpe � Z� Q.��$ <br /> � ft X OJ70 gaUft = 6.s Gatlons Y.5 0.190 <br /> 10. 7atat Da�sing vo(ume=Delivered Vofume plus Drotn6ack <br /> 2 0.f 70 <br /> 100 ge(+ 6.8 gal= t07 Gattons 3 0.380 <br /> 11. Minimum Alarm Votume�Depth of alarm l2 w 3 inches)X gallons per inch of tank <br /> ��in X t�.5 gaUin = 35.0 Gatlorn <br /> d Q.b61 <br />