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� _ ,:� . <br /> , .�Y C <br /> �, _ <br /> Fr31. "�' �. <br /> � r- :�> <br /> . . ; '° ,+ - <br /> � flgure E-25: Pump Se/ect�on Workshest , � �, : _ . . . .., � �- tc � <br /> . ... , .. . +�' �'� <br /> . '_ ��. : <br /> J. � PUMP SELECTION PROCEDURE � �� �� <br /> 1.. Determine pump capccity: y.� � <br /> A. Grovity dlstribution _ � , � � <br /> L Minimum required dischar e is 10 m . ��� : '' <br /> g � a. .� ,: <br /> 2. Maximum suggested discharge is 45 gpm. For other 3�� � ., �. ."� <br /> �establishments at least 10% greater than the water supply rate, &t'�or"''e^t�rem� <br /> but no faster than the rate at which effluent will fl out of the � �� ,.; =�,� <br /> distribution device. � � rora ���;�1 � <br /> . . .: :�. <br /> B. Pressure dtstrlbution .,,,�t . ���^ � � .� <br /> �r��e <br /> '�; See pressure dlsfrlbutlon work sheet ''''� � .. o��` <br /> - 4 . . ' �� . � .� . . '�..... . ��'.�..���.� " , ' � <br /> From A or B Selected purnp capacity: gp�n , . ;; <br /> : �- <br /> .2 Determine pump head requireme�tr. � • � `_" <br /> � �� � -� <br /> A.Elevation difference between pump and point of discharge? . �� �:� ' <br /> �'� feet . . - ' :� .r,� <br /> . _ . :,;t ; `,;: < <br /> B.Special head requirement? (See Figure at right-Special Head . ; : ,4 <br /> Kequire ents) - . - <br /> �feet � Special Head Requirements :'t:;� �;: � <br /> . C.Calculate Friction loss � cxavity Distribution '-. '' : <br /> ,,.; , � <br /> Pressure Distrilwtion '� <br /> ��� . 1. Select pipe diametei�in si� x; . <br /> 2 Enter Figure E-9 with gpm(lA or B)and pipe diameter(Cl). ' � �� ��. <br /> Read friction loss ' feet per 100 feet from Figure E-9 ',``��' ��� ` <br /> Friction Loss�i Z ' � ft/100ft of pipe F�ictl�on t,oa:in Plasfic Plpe;f� �,;;. <br /> 3.� Deternune total pipe length from pump discharge to soil �"�"� `�� ��T <br /> treatment discharge poin�Estinlate by adding 25 percent to pipe dow rate 1.5"" 2cuamete3p� . . <br /> �- 'length for fitting loss.Total pipe length times 1.25=equivalent � �iPm <br /> pi e length � 20 2.47 � 0.73 ': p.l l <br /> ��� feet x 1.25=� 7S feet 25 3J3 1.1 l 0.16 <br /> 4.Calculate total friction loss by multiplying friction loss(CZ) `;. :'. : ".;.. �' ., <br /> - ,�: <br /> . in ft/100�by the equivalent pip�length (C3)and divide by 100. � 6.96 2.oe .0.30 . <br /> ,, —�_ft/100ft x �' 3 7 � +100—�ft 8.91 2. 0.39 <br /> D:•-Total head required is the sum of elevation difference (A),special ` -'�"�� ;;;� �3 °l� <br /> head requirements (B) and total friction loss (C4) � � 50 13.46 . � '�0.58� <br /> ZG ft+�ft+ � Z ft= 55 . 4.76 ':: 0.70 . <br /> Total hecd.�_fset .�;r:, ,:.,,�.�,;:'; <br /> 65 6.48 � D.95 <br /> 3. Pump selection �o �� .� � <br /> � <br /> A pump must be selected to deliver at least �'���nr m <br /> lA or B)with at least 3�_feet of total head(2D) <br /> . ,F ' <br /> /". . • <br /> � • • <br /> ;hereby t I have comp ttus work in accordanoe with applicable ordinances, rules and laws. <br /> �/� (signature)��y3 / Z (license�t) � G� (date) . <br />