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. � PRESSURE DISTRIBUTION SYSTEM �r,o PeRFaRaT�oN OF A PERFORATED LATERA�
<br /> . �c.ass c�e.
<br /> 1. Select number of perforated laterals 3 T,���
<br /> .. .�:;,.�
<br /> � Lo sr of Geotaxtlle FaDric (u tar•
<br /> 2. Select erforation s acin = 3 fee� > l-cumY Sand Loyar '. ��a,�a��Y a s„�,�,K,�,
<br /> P P g ;�►h� ���� �,�,,
<br /> Perforotion Drilled Horizonfolly
<br /> 3. Since perforations should not be placed closer than 1 ft. to .,;Plus �`���r�C D A Le ctPl2•�o Edqo
<br /> the edge of the rock layer (see diagram),subtract 2 ft. �OTTl -;:,:..:;:..F1i14�;..•; .< .;:. , ; ,.,','�,_ of Rock Layar
<br /> the rock layer length. P�rforotlons lotofed at
<br /> Cl�an Sand Loyer Bottom of �ateral
<br /> �C� _::,:��.:..�.;.:. .r �.�.. .: .,:. .. .
<br /> � —�ft. _ �� feet. Orlpiirol Soll Propsrly Scarifiad
<br /> Rock layer length 8efae Placlnp Sond Layer
<br /> Requlred Perforatio�Dkcharge
<br /> 4. Determine the number of spaces between perforations. �n gallon+per minute(gpm)
<br /> Divide the length above by perforation spacing and round °��` :�,�� ;,kh�
<br /> down to nearest whole number. �f`�`'
<br /> 1.Oa 0.56 0.74
<br /> Length perf. spacing = v� ft. T 3 ft. = i 6 spaces
<br /> 2.Ob 0.80 1.04
<br /> �3� �2� a.Use for single family homes
<br /> b.Use for all other applications
<br /> 5. Number of perforations is equal to one plus the number of
<br /> perforation spaces .
<br /> Maximum number of quarter inch perforations pe
<br /> �� spaces + 1 =_(�perforations/lateral lateral to guamantee<10%discharge variation
<br /> Perforation
<br /> _. 6. Multiply perforations per lateral by number of laterals to Sgf�jg 1� 1� 2
<br /> � ` get total number of perforations.
<br /> 2.5 14 18 28
<br /> 3 x �� - s� erforations. 3.� 13 17 26
<br /> '�`��'$ �`"°`�`�'- P 3.3 12 16 25
<br /> 7. Determine required flow rate by multiplying 4.� 11 15 23
<br /> number of perforations by flow per perforation 5.Q 1Q 14 22
<br /> sr �
<br /> P� X BPm�f--�gp�• wwr�.o �.oceho aT ew oF vatssu�asrn�eura�+ s�sreM
<br /> �
<br /> .�,�.
<br /> 8. If laterals are connected to header pipe as shown on upper �
<br /> example,to select minimum required lateral diameter;enter . �����`"
<br /> table with perforation spacing and number of perforations ,,� �"`
<br /> per lateral. Select minimum diameter far ��`°'�
<br /> perforated lateral= I '/�- inches.
<br /> 4TWT�Oi PEMOMTEO�V(I.�TE1145 NR
<br /> MI[WML pST11yUfIOM W MOUMD
<br /> �{I[11fOMtto RNTK/K
<br /> v[w �fe ia'�'.,�"y r� .H/nr°�✓'°'��.+�
<br /> �� 9. If perforated lateral system is attached to manifold pipe near ,,,,�,o �,,,...�--
<br /> the center,lower diagram,perforated lateral length and R,.�.,�.�.�.d .,.�
<br /> number of perforations per lateral will be approximately one ` .,�.�.��;;
<br /> half of that in step 8. Using these values,select minimum �,„�, �,
<br /> diameter for perforated lateral= � �y inches. d,�.�`°`°�� �.,.��;,,.,r.
<br /> ����
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