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. . F-17 <br /> ' ptTMP SEL,ECTION PROCEDURE <br /> Flp PERFORATION OF A�PERFORATED L4TERAL <br /> A. Determine pump capacity: "'•�"'• <br /> Gravity Distribntion T°�°" � � <br /> 1. Minimum suggested is 600 gallons per hour(10 gpm)to stay ahead of - -.. - •: :,;�„a�,.,.,,�.F,e,k�.,,.,- <br /> ...��p�q Ssd te�r• .Yrl�Nwr N�m w�uw wwN <br /> water use rate. "'""`'°""°°°"' <br /> 2. Maximum suggested for delivery to a drop box of a home system is 2,700 . . '�a'�^°"'"°"°"`°"'"4 <br /> - NIo 4t0/l�a/ TOO <br /> gallons per hour(45 gpm)to pre�ent build-up of pressure in drop box. C.,•n,„ ''-���.� �Z•�.Ea�. <br /> � �a . . . el n«�lar« <br /> . . . . ..• � Rrwe�la+urs��a e� <br /> Pressure Distibution �. c,..,5,,.,,,� ���^«�.�«.� <br /> 3.a. Select number of perforated laterals 3 , � ' � ' <br /> on�.w sen►r.w�r srsuw <br /> b. Select perforation spacing=�._#ee�- B«...�.��.�.. <br /> c S b ad 2 R from the rock layer length. <br /> �t��-2 ft._• 3� feet <br /> d. Deternune the number of spaces bet�veen perforarions. <br /> Length perf.spacing=,�`�_ft.+�_ft._.l�spaces Required Perforanon D�n�e <br /> e. �_spaces+1=�_perforations/lateral � �n gallons per minute(gpm <br /> f. Multiply perforations per lateral b�number of laterals to ��y a,q. �y`�e %52•��'' y,,,,�'' <br /> g' �t total number of perforations.��,,; x �„ ,Q,,=�perforations. c�c> <br /> " �� P"`-�gP� 1.Oa 0.56 � 0.74 <br /> SELECTED PUNiP CAPACITY�1_gp� 2.0�j 0.80 1.�4 <br /> . B.Determine head requirements: a.Use for single family homes <br /> 1. Elevation difference between ump and point of discharge. b.Use for all other applications <br /> i�_feet <br /> 2. If pumping to a pressure distribudon system,five feet for pressure <br /> required at manifold if gravity s stem,zero. <br /> _�feet <br /> 3. Friction loss <br /> a. Enter friction loss table with gpm and pipe diameter. , p'�`LQ'g�' � <br /> Read friction loss in feet per 100 feet from table. � Poinc of D�3arge <br /> p.L._ /. (o f�/100 ft of pipe <br /> b. Determine total pipe length from pump to discharge F1e�adon Diffetence <br /> poin� Add 25 percent to pipe length for fittins p�,mp 7Z <br /> }oss,or use a fitting loss chart. Equivalent pipe <br /> length-1.25 times pipe length= F-18b <br /> 1 ) (� x 1.25= I 3� feet 1.5 inch 2.0 inch 3.0 inch <br /> c. Calculate total friction loss by multiplying gpn, �da+�v�*��n�P+v� <br /> friction loss in ft/100 k by equivalent pipe length. t0 0.69 0.20 <br /> Total friction loss= )3 4f x 1• (� +100= a feet '12 0.96 0.28 <br /> 4. Total head required is the sum of elevation difference, 14 1.28 038 <br /> s ial head uirements,and total friction loss. 16 1.63 0.48 <br /> p� �Q 18 2.03 0.60 <br /> 20 2.47 0.73 0.11 <br /> �j_+��+ 'Z� 25 3.73 1.11 0.16 <br /> �1� �2� �3�� 30 5.23 1.55 0.23 <br /> 35 7.90 2.06 0.30 <br /> 40 11.07 2.64 0.39 <br /> TOTAL HEAD �_feet 45 14.73 3�8 0.48 <br /> 50 3.99 0.58 <br /> 55 4.76 0.70 <br /> C. i ump sel�ction 6o s.bo o.s2 <br /> 1. A pump must be selected to deliver at least <br /> 3 I gpm (Step A)with at least 1� feet of total head(Step B). <br />