|
� - F-17
<br /> Pin�r�SEr ECTION PROCEDURE
<br /> EIO PERFORATION OF A P£RFORAT'cD L,TER4L
<br /> A. Determine pump capacity: w-�
<br /> Gravity Distribution ,,,.,,,
<br /> 1. Minimum su ted is 600 allons r hour(10 m)to stay ahead of _ f �
<br /> $� g Pe gP �,.,a�..,...�.�.k cd��,-
<br /> wa ter use rate. �..�`.a"5"°`""` �''"""°"""°''."'`°""°
<br /> .�,��.�,�..,
<br /> 2. Maximum suggested for delivery to a drop box of a home system is 2,700 . ��^��^����^���^�°��
<br /> Mb CoD 1w/ Tep
<br /> gallons per hour.(45 gpm)to prevent build-up of pressure in drop box. �.,,•R,„ "-., ��,., �z'�a�a,.
<br /> o Mia ?;�°`•:n+«
<br /> . � � Meraleti leca��e e�
<br /> Pressure Distibution � ���� �""'""`°'•"'
<br /> 3.a. Select number of perforated laterals�_
<br /> b. Select perforation sparing=�_feet, �;.,:"�"„�;K""°
<br /> c. ,,Su�b_�ct 2 ft from the rock layer length.
<br /> �_�i�-'��-2 f�_�_feet Z�
<br /> d. Deternune the number of ces between perforations.
<br /> Length perf.spacin�-.g;�ft.+�ft.= 3a'�paces Required PaEoration Disch e
<br /> e. �spaces+1=�perforations/lateral �+�u°�P��'°ce�p�
<br /> f. Multiply perforadons per lateral b�+ numbe f laterals to �`dse ;�Z 3 ad�
<br /> mm� �
<br /> g. -�t total numberof perforations.�; x , �Q,,- perforations. �f��
<br /> -"��,+=�i gp�- �-4� �
<br /> 78 1.Oa 0.56 0.74
<br /> SELECI'ED PUMP CAPACTI'Y '�'9�' gpm 2,�b �.8� 1.�4
<br /> B.Determine head requirements: a.Use for single family homes
<br /> 1. Elevation difference between p p and point of discharge. b.Use for all other applications
<br /> feet
<br /> 2. If pumping to a pressure distribution rystem,five feet for pressure
<br /> required at manifold if gravity�tem,zero.
<br /> �feet
<br /> 3. Friction loss
<br /> a. Enter friction loss table with gpm and pipe diameter. Pipe La►gch
<br /> Read friction loss in feet per 100 feet from table. � Point of Discharge
<br /> ' F.L= a�_ft./100 ft of pipe T��'4
<br /> b. Determine total pipe length from pump to discharge pcvadon Difference I
<br /> point Add 25 percent to pipelength for fitting p�,n,p o�q,,v
<br /> loss,or use a fitting loss chart. Equivalent pipe
<br /> length-1.25 times pipe length= F-18b
<br /> �j�x 1.25=�feet
<br /> c. Calculate total friction loss b multi t n 1.5 inch 2.0 inch 3.0 inch
<br /> Y P Y� S gpR, rmaa+�.�,ao e�r o,a
<br /> friction loss in ft/100 h by equivalent pipe len�. ,
<br /> Total friction loss= , x +100 � feet 10 0.69 0._0
<br /> �� �_ 'i2 0.� o.2a
<br /> 4. Total head required is the sum of elevation difference, 14 1.28 0.38
<br /> special head requirements,and total friction loss. 16 1.63 0.48
<br /> 18 203 0.60
<br /> � 20 2.47 0.73 0.11
<br /> + 5� + � 25 3.73 1.11 0.16
<br /> (1) (2T (3c) 30 5.23 1.55 0.23
<br /> 35 7.90 2.06 030
<br /> 40 11.07 2.64 039
<br /> TOTAL HEAD � S feet 45 1a.73 3.28 0.�8
<br /> 50 3.99 0.58
<br /> 55 4.'76 0.70
<br /> C. Pu.mp selection bo s.6o o.s2
<br /> 1. A pump must be selected to deliver at least
<br /> �_gpm (Step A)with at least ,�.,�,feet of total head (Step B).
<br />
|