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� � • PRESSURE DISTRIBUTI�ON SYS't-'�M E"� �"`O�"T'°" °F • PERFOqATED LATE1t�L <br /> ,�a«c.w. <br /> -z--�- <br /> 1. Select number of perforated laterals � ��.T.;""" . �•i� <br /> �y�r�I N o..N.�N.rwk t••� <br /> • L�MM�M�/LI/M , :.Nch�Mr�1 11�►M hr i� <br /> � �n111 /«M�/� � <br /> 2. Select perforation spacing =�?�_ feet , �M�� �w��.,,„„k..;% <br /> � , ... . . . <br /> 3. Since perforations should not be placed closer,than 1 ft. to � �� ". �' " . ''� '' ""`� �`""� <br /> -v«Iue�Nn IwIN.1 <br /> the edge of the rock layer (see diagram),subtrac�.2 ft. from c�s.�.u„, MINm N L��rN <br /> the rock layer length. , <br /> h�'INcMN l�iM l�Nr�� . <br /> �k,,Y"�-2 ft. _ ��, feet <br /> TABLE Or i'IiRFOItA'tiON DIS�IARCI'S IN G1'M <br /> 4. Determine the number of spaces between perforations. H�a n��ro�--�-�t� <br /> Divide the length above by perforation spacing and round <br /> down to nearest whole number. '�_ '�. <br /> t.Oa OS6 0.74 <br /> Len th rf. s cin 53 f t. + f t. = i i s 0.69 0.90 <br /> 8 Pe P� g = �#3) #2� -,�spaces z.a, o.eo �.a <br /> 2.5 0.89 1.17 <br /> 5. Number of perforations is equal to one plus the number of 3.0 0.98 12R <br /> d.0 1.13 IA7 <br /> perforation spaces . s.o i.ss i.as <br /> aUx 1.0 foot of hcad for residenNal systems. <br /> �spaces + I = � � perforations per lateral bUsc 2.0 fcct of head for otherestablishrnrr�ts <br /> 6. Multiply perforations per lateral by number of laterals to <br /> get total number of perforations. ,�-. <br /> .� � � Table 2 <br /> , � 1ltsaimum Nb�rsele n�mbar of qu�l�r ineA porfun�iwn� <br /> x - � erforations w <br /> ►alcrsl� pMs/Iaienl- P Islaal ta Ru�nnta<10�Uluhut�vviotfu� <br /> �"�"��+'°'"� 1.25 inch 1.5 inch 2.0 inch <br /> 7. Determine required flow rate by multiplying 2,5 14 18 28 <br /> number of perforations by flow per perforation 3.0 13 17 26 <br /> . 3.3 ]2 16 25 <br /> 4.0 11 15 23 <br /> 5 4 .� ' S.0 10 l4 22 <br /> �rs X a���►r= U v gpm. <br /> 8. If laterals are connected to header pipe as shown on upper �`'� "'"°""""`". <br /> example,select minimum required lateral diameter from .,�„ <br /> table 2;enter table with perforation spacing and number <br /> of perforations per lateral. Select minimum diameter for � , <br /> perforated lateral = inches r,,,,.�z�� <br /> ti��� <br /> ., <br /> 9. If perforated lateral system is attachett to manifold pipe near <br /> the center, as in lower example, perforated lateral length and , �^..r'���:,.� �� <br /> . number of perforations per lateral will be approximately one c�"""""" <br /> half of that in # 6. Using these values,select minimum �=�� � :�� <br /> diameter for perforated lateral from table 2 --�r�--- � <br /> � perforated lateral = /! z" inches � • •�� <br /> �..� . <br /> ,��,,.A'"� �a►� <br />