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' .:x�. <br /> �€Y OSTP Pum Tank Sizin Dosing and Float <br /> p g� UNIVERSITY <br /> MinnesotaPolEution and Timer Setting Design Worksheet OF�VIiNNESOTA = -r.. <br /> Control A rrcy <br /> DETERMINE TANK CAPACITY AND DIMENSIONS Project ID: v 12.08.06 <br /> 1. A. Design Flow(Design Sum.fA): 750 GPO <br /> B. Minimum required pump tank capacity: 1000 Gal C. Recommended pump tank capacity: 1000 Gal <br /> MEASURED TANK CAPAGTY(exisNng tanks): <br /> 2. A. Rectangte area=Length(L)X Width(W) <br /> �ft X �� ft = �ft: Width <br /> B• Circle area=3.74�(3.14 X radius X radius) <br /> 3.14 X �2 ft = �fti � ► <br /> Length <br /> �, Calculate Gatlons Per Inch. There are 7.5 galtons per cubic foot. Therefore,multiply the area <br /> from 1.A or 1.8, by 7.5 to determine the gallons per foot the tank holds. Then divide that <br /> number by 12 to calculate the gallons per inch. �--► <br /> Radi <br /> � ft2 X 7.5 gal/ft3 + 12 in/ft = �Gallons per inch <br /> D. Calculate Total Tank Volume <br /> Depth from bo[[om of inlet pipe to tank bottom: �in <br /> Totol Tank Volume �Depth from bottom of tnlet pipe(Line 4.A)X Gallomllnch (Line 2) <br /> � in X 36.0 Gallons Per Inch = �Gallons <br /> MANUFACTURER'S SPECIFIED TANK CAPACITY(when available): <br /> 3. A. Tank Manufacturer: wieser Note:Design calculations <br /> are based on this specific <br /> B. Tank Model: 1000 Wnk.Substituting a <br /> different tank model witl <br /> C. Capacity from manufaccurer: 1000 Gatlons change the pump ftoat or <br /> D. Galtons per inch from manufacturer: 36.0 Gallons per inch timer settings.Contact <br /> designer if changes are <br /> E. Liquid depth of tank from manufacturer: 28.0 inches ���ry' <br /> DETERMiNE DOSING VOLUME <br /> 3• Calculate Votume to Cover Pump (The inlet of the pump must be at least 4-inches from the bottom of <br /> the pump tank 8 2 inches of water crnering the pump is recommended) <br /> (Pump and block height+2 fnches)X Ga(tons Per Inch (2C w 3E) <br /> ( 14 j� + 2 inches) X 36.0 Gatlons Per Inch = 576 Gallons <br /> 4. Minimum Pumpnut Vo(ume -4 X Volume of Distribution Piping: 124.4 Gallons <br /> -Line 17 of the Pressure Distribution or Line 11 of Non-level <br /> 5. Calcutate Maarimum Pumpout Volume(25%of Design Ftow) <br /> Design Flow: 750 GPD X 0.25 = 187.5 Gallons <br /> 6. Select a pumpout volume that meefs both Items above (Line 4&5): 187.5 Galtons <br /> 7• Calculate Doses Per Day=Design Flow=Dosing Vo(ume Volume of Liquid:io. <br /> 750 gpd : �s�.s gal = 4.0 ooses <br /> 8. Cakulate Dreinback: �pe <br /> A. DfameterofSupplyPipe= �inches Pipe Liquid <br /> B. Length of Supply Pipe= 70 feet <br /> Diameter Per Foot; <br /> C. Volume of Liquid Per Linea!foot of Pipe - 0.170 Gallons/ft (i nches) ��ird��OnS� <br /> D. Droinbxk =Length of Supply Pipe X Volume of Uquid Per Lineal Foot of P1pe 1 0.045 <br /> �o ft X a•»o gaVft = t�.9 Gallons 1.�5 0.078 <br /> 9. Totol Dosing Volume=Dosing Volume plus Drcrinbock �.5 �.110 <br /> 187.5 gal+ ».9 gal= �� Gallons 2 Q.17Q <br /> 10. Minimum Alarm Vdume=Depth of alarm(2 or 3 inches)X gallons per inch of tank 3 Q.38Q <br /> ��n X 36.0 gavin = n.o Gallons 4 0.661 <br />