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�izinQ of Pump Station ' . <br /> 1. Dctcrminc Surfacc Arca T <br /> Rcctanglc=Ama=L x W W'��h <br /> x = square feet 1 <br /> Lcnglh <br /> Circle= Area=a x(Radius� <br /> 3.14 x x = squaze feet Radius <br /> Other=Get Surface Area from Manufacturcr �=3.1a <br /> square feet <br /> �2. Calculate Gallons Pcr lnch <br /> Thcre are 7S gallons per cubic foot of volumc,thcrcfore you must multiply the ama <br /> times the conversion factor and divide by 12 inches per foot to calculate gallons per inch <br /> Ama x 7.5 gpft'+12 inchs per foot <br /> x 7.5+12 =�,�gallons/inch ��'�i£ �'�A',�L ��S <br /> 3. Calculate Gallons ro Cover Pump(with 2 inchcs of watcr covering pump) Es�imai«1 Scwage�lo�w)in Gallons per day <br /> (Height(in)+2 inches) x gallons/inch(ii2) <br /> (�+ Z )x � _ ��Z gallons um r <br /> of Type I Typc II Type 11[ Typc <br /> Iicdrooms 1 V <br /> 4. Calculate Total Pumpout Volume <br /> a. To maximize pump lifc select sump size for 4 to 5 pump operations per day. 3 450 300 21�8 � <br /> ob gpd+4= /d� gallons per dose 4 600 375 256 °r`�` <br /> �.i�� <br /> b. Calculate drainback 5 750 450 294 ;,, <br /> 6 900 525 332 �Yr��, <br /> 1. Determine total pipe length,�S feet. 7 1050 600 370 "'" <br /> 2. Determine liquid volume of pipe, /� gallons per 1(x)f�Yt. 8 1200 675 408 ���,,,;,,� <br /> 3. Multiply length by volume: Drainback quantity= <br /> 3� fcet x�gallons/700 ft.__�gallons. <br /> Pi d'umNa inchet Calluns r 100 fce� <br /> c. Total pump out volume equals dose volume+drainhack 1 4.4 <br /> /�� eallons per dose+�_gallons= ���o gallons 1.25 7.77 <br /> 1.5 10.58 <br /> 5. Calculate Volume for Alarm(typically 2 to 3 inchcs) 2 17.43 <br /> Depth(in)x gallons/inc (#2)= 2.5 24.87 <br /> Z x 2.3 =�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 /> �x.75=�gallons <br /> 7. Calculate total gallons <br /> Rcservc Capacity <br /> gallons over pump+gallons pumpout+gallons alarm+gallons mserve capcity <br /> #3+ #4c+#5+#6 <br /> �L Z +/��+S[f�_+�b =�gallons A�� <br /> Pump On <br /> 8. Total Depth (Total gallon dividcd by gallon per inch) <br /> Total Gal on(#7)+�allon inch(#t2) To I Pumpout�olumc <br /> �7�+ 23 =�inches Pump Of� <br /> Pump Hcight <br /> 9. Float Scparation Distancc(equal total pumpout volumc) <br /> Total p�mpout volu�c)+�allons/inch(#2) <br /> �� � 3 inches , <br /> f <br />