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/����-'J F dt � .� B�t'� <br /> E-26 <br /> I'RESSURF_DTSTRIBUTION YSTEM <br /> � <br /> 1. Select number of p���•forated laterals � , <br /> 2. Select perforation sE�acing = ,3 {t, <br /> 3. Sinre perforations :,1►ould not be placed �loser than 1 ft. to <br /> tl�e edge of tlle rocl: layer (see p. L-14), subtl'act 2 ft. froir the <br /> rock layer length. <br /> --�Z. S <br /> Ro,k laycrlength - z ft. ;��. 2'S f t� F�tv�H �F.�TF'�Q <br /> 4. Determine the nurr t�er of spaces betWeen p@rforations. <br /> Divide the length a�cve by Perforation spacjng and round <br /> dowil to nearest wl�c�le number. � ��`� <br /> TAI3LEOFPERFORATIO DISC(InKCESINCI'A1 <br /> I�eI1glI1 perf. spacin y = .3i•25 f t, .t- 3 f t. _ /Q I Icad Pe�foration diametcr(inchcs) <br /> (3) (2) spaces �.oa -'L �ia <br /> ��5����:�n <br /> 5. Ntimber of�erfora i_�n5 is ��ual lo one plus the number of 1�5 0.�'9 ��.<��� <br /> 2.0� o.so i.o� <br /> perforation spaces . Z�s o.H9 i.» <br /> :�.o o.��tt i.zt� <br /> 4.0 1.13 1.47 <br /> �� spaces + � _ // perforatipns/lateral 5�0 '.2�' '.�,�, <br /> :1Usc 1.0 foo►of hcad for rcsidcntial syslcros. <br /> bUsc 2.0 fect of hcad fo�othcr�stablishmcn�� <br /> ` 6. Multiply perforatic���s per lateral by number of lateral$ ta <br /> get total nu�nber of ��erforations. C-17b <br /> � __// Mu�wum�llow�64n+rficrof uuaiocEpcNorµionpeWa.lia <br /> X — _ ,�6 perforations. �°"��°<'°A�°K°° 41a� <br /> laioral s perls. lalcral— P °`"'°°•o`°'°� 1.25 inch 1.5 inch 2.0 inch <br /> u�� <br /> 2.5 14 18 ZH <br /> 7. Determine requir,,� flow rate by multiplying 3•�� 1s » . 2Ci <br /> number of perforatic ns by flow per perforation a.o ii is 23 <br /> (see page E -17) s.o io �a 2z <br /> �6 , s6 <br /> per(s x gpm/perf _,3 7. ogPm. <br /> E-15 <br /> �u..nu�o iour[n u cw n rw[sw+C�s�n�ounon smru <br /> 8. If laterals are conne�_.ed to header pipe as shown on page E- � <br /> 15, select minimum required lateral diameter from table on �'.a <br /> �.,,.J,. <br /> page E-17; ent�r tab c� with perforation spacing and number ,,..,��•��'" �:r►-� <br /> of perforations per lateral. Select minimum diameter for �yy^'^ <br /> perforated lateral = _ inches. <br /> � E-12 <br /> ,..�;,r,�...-;:c,�.�,.. <br /> � 9. If perforated lateral system is attaclled to maniEold pipe near �"��""""�' <br /> ;ux e"�',j.�a':�.�r'•t.:-"�i�,,,...•�•""' <br /> the center, as on pa�,c� E-12, perforaled lateral length and -„�. <br /> number of perfprati��ns per lateral will be approximately one "�"°'R'-�� <br /> half of that in step 8 Using these values, select minimum �.W . NW"' `••��`M�'' <br /> .,r.;= <br /> diameter for perfor�ted lateral from page E-17 as �Jf 7/.�z ,,,���''' ' <br /> inches. <br />