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, � �-�/�J�'�fF�: ( 5 �R� F-15 <br /> P MP : EL�CTION YIt(1 Ell IZL <br /> !�. Uctcrmine pump capacit} <br /> l. Minimum su�;gcstcd i� 60O gallons per liour(]0 gpm) lo stay ahcad of <br /> walcr usc ratc. <br /> 2. Maximum su�gcstcd (��r dclivcry to a drop box of a homc systcm is 2,700 <br /> �;nilons per hour(45 g��m) to prcvent build-up of pressurc in drop box. <br /> 3. Usc valuc (rom dcsign of pressure distribution systcm. <br /> SELECTGU ]'UMP CAPACITY .�7• O gpm p��,������i�� <br /> ti <br /> 13, [)eterminc head requireme�its: I'oini c,l U��ch:�r�;�• <br /> l. L'Ic��atioi� dif(crcncc b��twcen pwnp and point of c��schargc. <br /> �6 feet � Glevation Diffcrcncc� <br /> 2. If pumping to a pressi rc distribution systcm,add fivc feet for pressure P11J7�' <br /> rcquircd at manifold <br /> _�feet f-186 <br /> ,�. FiiCtlOtl IOSS 1.5 inch .0 in� 3.0 inc:h <br /> 6pp� Fricti��loss per i o n�>r���� <br /> a. Entcr friction loss t blc with gpin and pipc diametcr. <br /> IZcad fri�tion loss ir fcct per 1(� fcct from pagc F-18. 10 0.69 0.20 <br /> P.L. _ ?.Z 9 ft./ �(�ft of pipc t2 o.9G o.28 <br /> 14 1.28 0.38 <br /> b. l�ctcrminc total pi� c�cnglh from �ump to dischargc 16 1.G3 O.qR <br /> F�c�int. Add 25 perc •n� to piE�c Icn�lh for filtin� I8 2.O3 b.GO <br /> Ic>ss,or usc a fittin� loss chart. �quivalcnt pipc 2� 2.�� 0.�3 ��.�� <br /> 25 3.73 l.11 O.lfi <br /> Icnfith - 1.25 ti�pes ip�length = 30 5.23 I.SS 0.23 <br /> /D, ' x 1.25 = /1 �� fcct 35 �.90 2.cu, u.3o <br /> ' c. Calculatc to►�J fric� ,�n lossby multi�lying 40 ��•�» 2•�'� ��•3`� <br /> 45 14.73 3.28 O.qg <br /> � (riction loss i�� (t/1 {) f�by cquivalcnl i�c lcn�lh. 50 3.99 O.SR <br /> 'I'c>tal friction los�_ _ ?. Z9 x /2� +lpp= � . 9 feet 55 4.7G o.7c) <br /> � 4. 'fot�l hcad �cquircd is hc sum of cicvation diffcrcncc, C'� S.Cic) c).K? <br /> sperial hcad r�quii-cn �nts,and total frirlic�n loss. <br /> /�' + S + z. 9 <br /> (1) (z) (3c) <br /> TOT! L HEAD Z y feet • <br /> G Pump selection D ,� <br /> l. A pt�mp inust bc sclectcd tc dclivcr at Icast �7ogpm (Step A) with at lcast <br /> ?� fcct of total hcad (Stc > U�. _ FSTIMATED SEWAGE FLOWS I�� GAL�ONS PER DAY <br /> NUMBER TVPL OF RESID[NCE^ <br /> OF -- .... ....'--'-- <br /> E]fDkOOMS 1 7_[ � -�--�-�--�-- <br /> l�. Total Pumpout Volume z soo zz5 _ . �oo �„�,:- <br /> I. To maximizc um ]i(c scic t sum sizc (or 4 to 5 um o crations cr d�� 3 450 'o° 1��� �' <br /> P P P P P P P Y• � eoo s-rs zss °°�"r: <br /> SO gpd 4 = /�7. S gatlons per dosc s ,30 ��o z�� TY','.;,. <br /> 6 <JOO 325 332 �1. <br /> 2. Calculatc drainback � �oso 600 3�0 ;,`, <br /> O 1200 67h ,It)U lolun�n•. <br /> I. I�rtrrminc total pipc lcng� �, � � fc�t. <br /> 2. f�rtcrminr liquid volumc��f pipc,/7.�f3��allons per 100 fcct. (uc p��gc F-18) T-1 Htl <br /> 3. �1ulliply Icngth by volum : Drainback qua�ilitY - ��; �cdiumcicr inchcs G�illun.e per IO(I lrcl� <br /> /�fcct x/7.'f� �allons/100 (t. _ /7•1..�ballons. 1 4.4) <br /> 'Sug�;ested drainback quantity is 0 percent of pumped quantity. A larger drainback 1.25 7.77 <br /> �erc�nt��e will decreaso pump st:�tion efficiency slightly but pumping ener�y cc>sts are <br /> ust�illy�rclativcly small part of tl,c total houschold encrgy costs. 1.5 l 0,58 <br /> � 2 17.4� <br /> 3. Tot�l pump out volumc eqt nls dosc volumc +drainback 2,5 24.�7 <br /> � /�alloi�s per dosc+ _�gallo�is= Zo`-/. 9 Total Gallons 3 3�.4 <br /> 4 CC.I <br />