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� j , �iiMAi�l�OilM�!0fl"Yf^��K• ...'s :;Y�. -. .M!.'aN � ; ...... . . . <br /> i. J4�ti P�''!ii . � . . _l.. JY � ;F h n.: ' n��' . <br /> 1..�v `� /« IV+� <br /> r,. �• � \ <br /> ,i't.i h�• . . . '� <I :��C3iQCp. a/1 p'k�'`-t'-' ` <br /> � P i - / . o`+'Lp' O� ' <br /> ,;;:��. .E-3Z • <br /> ,�r;�.�,:,,. - <br /> r��`������ . FJgure E•25: Pump Selection YYorkshest � � � <br /> :;�:::, i�. �' <br /> �:`:1' . . � <br /> _ r• , . -• . <br /> • ' � .. . <br /> �.;� . ' . <br /> � - � PUMP SELECTtON PROCEDURE � � -� <br /> I. Determtne pump copactty: <br /> A. Grovlty. dlstributton . \ . <br /> 2. Mini.cnum required discharge is IO gpm � ` . . <br /> �. Maximum suggested discharge is 45 gpm. For other <<� ;• . <br /> e s t a b l i s h me�t s at least 10% greater than the water supply rate, � �� ���t��r�,�,r��, <br /> but no faster than the rate at which e f fl u e n t w i l!A a Y v o u t o f t h e (,3`5 . °a <br /> � distribution device. �j . rora �,a � <br /> ��,�' B. Pressure distributton � '�"° - � <br /> '���.. •� ?A.elevotlon . <br /> �`' � p essure distrlbutlon wprk sheet � ��`� /� � . <br /> :�. Se6 ! 4 _ <br /> ��_�;�Y.��. •����� � � . <br /> ����:��From A or B �. --- � . <br /> :<r�= Selected purnp copactty: �� ..................•--- ....... � - <br /> �,��� � • ----_9Pm � � <br /> �:`��`�:2.Determine pump head�requirements: . � • � <br /> - �A.Elevation difference between pump and point of d.isch,arge? ' + <br /> ___�_,�feet . � . . �� . <br /> � B.Special head requiremer�t? (See Figure at right-Specia!Head . .� � <br /> Requirements) � . <br /> `��� �feet Specls) Head Requiramencs <br /> . '-�=G Caiculate Friction loss e• ---------- �� � <br /> ::.;,:: ' ' ' p. <br /> -?��,��:- I. Select pipe d.iameter_��,�G _in - Pressure 0istrihution g.fr � <br /> ���'�`:�;'_ 2. Enter Figure E-9 with gpm (lA oroB�and pipe diameter(Clj. . <br /> . � <br /> . Read friction Ioss in feet per 100 feet hom Figure E-9 " • � <br /> � � Friction Loss� �� ft/100ft of pipe Fdctlonl.css tn ptastic Ptpe: . <br /> '��'�' 3. Determiiie totat i e <br /> �.,_�... p p length from pump discharge to soil nominai <br /> -,�_:�:- <br /> .� � � ptpe citameter <br /> : .'~�-treatment discharge point Estimate by adding 25 p�ercent to pipe dow rete 1.5' 2• gM <br /> :�,. ._.::. <br /> ;�.� �t.Iength for�tting ioss.Total pipe length times 1.25=equivalent � � <br /> �'`:;s�`pj�j�� <br /> �`;�;��: 20 � 2.47 0.73 ' 0.11 <br /> `-' "�': � � C7 feet x 1.25�• 3 feet 25 3J3 I.1 0.16 <br /> '`-:`�.4.Calculate total friction loss by multiplying friction loss(C2) � .f ��: <br /> .: �;�..�in.ft/.I00 ft by the equivalen�t,p ipe length (C.�)an divide by I00. � G.96 2. �.0.30 ' <br /> : .:�-.;� /•�ft/204ft x '`�-3�1 <br /> ;�.�-'-= . +100 = - ft AO 8.91 2.b4 0.34 <br /> ���D:�.•Totai head required is the sum of elevatian di.fference (A), special � �::� i l,g�;;_ <br /> � ead re uire 3'��-`��- <br /> �•� '� q ments (B}, and total fricti n loss (C4) 50 ..13.46 . 3.99 �.58 <br /> ;;�- . �9 <br /> ��`'�`~ �.+�_ft+ �►- 3' ft � 4.70 <br /> "� � OJO <br /> _::;�.Totot heod. _ .�S faet � . _ �. �m ':� <br /> ;, <br /> � �3:Pump setectlon � a.a8 0.95 <br /> �:? 70 <br /> �7.44 I.09 <br /> '' ::�_... <br /> . 5��.. .. <br /> � �;A pump must be selected deliver at least '�U�r� <br /> ; _ ar B)with at Ieast�feet of total head {2D) <br /> �' <br /> ,�;;.. ; .. � <br /> ��=�. . <br /> _ �.��. . <br /> rE Cer#fy that!have com leted this work in accordance with applicable ordinaru�, rutes and law,. <br /> ,r".� � �_ / . . <br /> i'e/•'�' (signarure) /y- /<�� (Iicense�t) jt/ �-7��G <br /> ,..__. (date) <br />