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. . � • Siziiig of Punip Statiori <br /> 1. Dct�rrninc Sur(acc Arca T <br /> Rcctangle = nrca = L x W �v����� <br /> L <br /> �—' x = sc,uare feet F— Lcngih —I <br /> Circle= Area = tc x (Radius)t <br /> 3.14 x x = square feet Itadius <br /> rz=3.14 <br /> Other=Get Surface Area fron� Manufacturer <br /> square feet <br /> 2. Calculate Gallons Per Inch <br /> Thcre arc 7.5 gallons per cubic (oot of volumc, thcrc(orc you must multiply thc arca <br /> times the caiversion factor ancl clivide by 12 inches per f�c�t to calculate�allons per inch <br /> Arca x 7.5 bpft'+ 12 inchs per (oot <br /> x 7.5+ 12 = g�llons/incli � �' 3 � �{�'�' � �/' <br /> A <br /> �'J`{'i <br /> r �` <br /> J <br /> 3. Calculatc Gallons to Cover Pun��� (witli 2 inchcs c�f ���atcr covcrin�; pun�p) Estimatcd Scwabc Flows in Galluns ;�:r�i,,:. <br /> �E:(�J) <br /> (f-{eight (in) + 2 inchcs) x gallc�ns/incli (fJ2) wn cr <br /> ( /c"S + %� ) x �3",:�=�gillons of Typcl T�,^�_ ;I�'I�}E�c11; 'I���pc <br /> 1)cdrooms I V <br /> 4. Calculate Total Purnpout Volunm 2 � 225 IRO <br /> a. To maximize pump lifc sclect suTnE,s�ze for 4 tc+5 pun�p oF�crations E�cr day. 3 � , . ! 3U0 21 R ���" <br /> � �l� gpd +4 = �/.,�, � gallons per ciosc 4 -.,�;�.; 375 <br /> b. Calculate drainback 5 750 450 <br /> 6 90(1 525 :l:� <br /> l. Deter�nine total pipc length, i:-� (e�l. 7 ]Oi�� 600 37Q ��i`� <br /> 2. Determine liyuid volurne of piE�c, �;allons E,cr 100 (cct. S 12t:: ''S 408 �„i,,,,,,,� <br /> 3. Multiply len�th by voluti�e: Drainback yuantity = ` <br /> �G feet x���allons/]00 ft. _�_��llons. <br /> Pi Jixr.,ctc.(inchcs Gxll�u�<jr- . .- <br /> c. Total pump out volume equals cl�se volume+ clrainback 1 - <br /> 5 allons er duse+ allons- � <br /> --��5 P �-� - � >'��� gallons 1.25 7.7 i <br /> 1.5 10.5�i i <br /> 5. Calculate Volume for Alarm(tyE�ically 2 to 3 inches) 2 17.�1;� <br /> Depth(in) x gallons/incl� (N2) = 2.5 <br /> _�x��_ � ga�Ions 3 �c,.•r <br /> 4 � G6.1 <br /> 6. Calculate Reserve Capacity(75"J� the daily flow) <br /> Daily flow (see page D-7)x .75 = <br /> ��D x .75 = �.� gallons <br /> Rcscrvc Capacity <br /> 7. Calculate total gallons <br /> gallons over pump+gallons pumpout +gallons�l�rm +gallons reserve capcity <br /> �3 + ii4 c+#t S +# 6 <br /> 3�b + �t.' + P12' +�� = S J gallons Alan� <br /> Pump Un <br /> 8. Total Depth (Total gallon diviciccl by ballon per inch) <br /> Total Gallon (�17) +�allon/inch(�l2) . <br /> ��+�3•3 -��inclies To 11 Pumpout�'ol�:� � <br /> Pump Off <br /> ' Pump Hcighl� <br /> �. Float Separation Distance(eyual total pumpout ��olun�c) x. <br /> Total pumpout volume (�t4c)+gallons/inch (tl2) � <br /> ; � +�?�_�_inclies <br />