Laserfiche WebLink
. � Sizing of Pump Station <br /> 1. Dctcrminc Surfacc Area T <br /> Rcctangle=Arca= L x W W'��h <br /> x = square feet 1 <br /> I.cngth <br /> Cirde= Area =n x(Radius)Z <br /> 3.14 x x = squue feet K��;us <br /> Other=Get Surface Area from Manufacturer rz-3.ta <br /> square feet <br /> 2. Calculate Gallons Per tnch <br /> Thcre arc 7.5 gallons per cubic foot of volumc,thcrcforc you must multiply the ama <br /> times the conversion factor and divide by 12 inches per fcx�t to calculate gallons per inch <br /> Arca x 7.5�pft'+12 inchs per foot <br /> � .� „_.,_,. <br /> x 7.5+12 = �k� gallons/inch ��=/« �i"���'�`%F' ��j�� /'�f.- <br /> 3. Calculate Gallons to Cover Pump(with 2 inches of water covering pump) Estimat«!Sewage Flows;n Gallons per day <br /> (Height(in)+2 inches) x gallons/inch(ii2) �g�� <br /> (�+_�)x�_��>Z gallons of r Type I Typc II Typc 11I Typc <br /> Bcdrooms 1 V <br /> 4. Calculate Totai Pumpout Volume 2 300 225 180 <br /> a. To maximize pump life select sump size for 4 to 5 pump operations per day. 3 450 300 218 � <br /> �% � gpd+4 = /�S c� _gallons per dose 4 600 375 256 �yi�� <br /> b. Calculate drainback 5 750 45U 294 ;,, <br /> 6 900 525 332 �Yc��, <br /> l. Determine total pipe length, �G�feet. 7 1050 600 370 "°` <br /> 2. Determine liquid volume of pipe, 1743 gallons per 1(x)fect. 8 1200 675 408 u,��,u;,,,s <br /> 3. Multiply length by valume: Drainback quantity= <br /> !cx', fcet x %7�gallons/100 ft._ %T galions. <br /> Pi di�meter inchec Gallans r 100 fcet <br /> c. Total pump out volume equals dose volume+drainback 1 4.4 <br /> /.S� gallons per dose+ /'7 gal)c�ns= /�� gallons 1.25 7.77 <br /> 1.5 10.58 <br /> 5. Calculate Volume for Alarm(typicaliy 2 to 3 inches) 2 17.43 <br /> Depth(in)x gallons/inch(#2)= 2.5 24.87 <br /> Z.3 x � _��gallons 3 38.4 <br /> 4 66.1 <br /> 6. Calculate Reserve Capacity(75% the daily flow) <br /> Daily flow(see page D-7)x.75= <br /> �cC%x.75= s��gallons <br /> Reservc Capacity <br /> 7. Calculate total gallons <br /> gallons over pump+gallons pumpout+gallons alarm+gallons reserve capcity <br /> �►3+ #4 c+ti 5+�!6 <br /> ���Z +/�+��+ f�s� = G��S gallons Alarm <br /> Pump On <br /> 8. Total Depth (Total gallon dividcd by gallon per inch) <br /> Total Gallon(#7)+�allon/inch(#2) <br /> ��'k•<_+ Z�_ �J inches To I Pumpoul Volumc <br /> — Pump Off <br /> Pump Hcight <br /> 9. F7oat Scparation Distance(equal total pumpout volume) <br /> Total pumpout volume(#4c)+gallons/inch(#2) <br /> �_•�_�inches <br />