Laserfiche WebLink
ENO PERFORATION OF A KRFOWTEO L <br /> PRESSURE DISTRIBUTION SYSTEM <br /> am"CSVW <br /> 1. Select number of perforated laterals K *•M•y MAMW�y <br /> ' Y`.•Lorca w tiaewlee Fawn tar lav <br /> • Loamy Sets torts :rrw lgar w May ar ire.C~d <br /> 2. Select perforation spacing= feet. �^,+.►t <br /> rararellae Onllae Hwuaerally <br /> • eua Cao Nae, Ae <br /> 3. Since perforations should not be placed closer than I ft. to �•' "s l " ft= o 1.cee. <br /> e n .km,. .f Me.L.Pw <br /> the edge of the rock layer(see diagram),subtract 2 ft. from :.►t..al.,,.t,.aw at <br /> the rock layer length. <br /> ;'. Clem Sew Loner laeanr d waw <br /> � orlefeel s.0 H.ear swmw <br /> �la��ph-2ft. = 3 feet. �• �Layer <br /> TABLE OF PERFORATION DISCHARGES IN cPtit <br /> 4. Determine the number of spaces between perforations. Had Perforation diameter(inches) <br /> Divide the length above by perfc:;:.'---:pacing and round <br /> down to nearest whole number. <br /> l <br /> 1.0a > a-% <br /> 0.69 0.90 <br /> Length perf. spacing --�3 ft.+ ft. _ 7 spaces ss JO <br /> o 1.04 <br /> (3) (2) 3.0 0.98 I.M <br /> 5. Number of perforations is equal to one plus the number of a 1.13 1.47 <br /> perforation spaces . <br /> 5.0 1.26 I 1.63 <br /> IUse 1.0 foot of head for residential systems <br /> bU <br /> 4 spaces + i perforations/lateral ._ <br /> se i0 feet of head for other establishes r <br /> = <br /> AIrY.e��1..IrI�So ." rirV.I Y <br /> 6. Multiply perforations per lateral by number of laterals to �,.,,,.,� <br /> get total number of perforations. Zs 1 la ch 1 1i h 2.0zs <br /> .z=:� 13 26 <br /> X = SY perforations. 4.0 11 is 233 <br /> 3.0 10 14 22 <br /> 7. Determine required flow rate by multiplying <br /> number of perforations by flow per perforation <br /> 0,7y, <br /> /V jn. rrwo6o Lnurm v w <br /> ar oo saiwi estw.u� s�srrr <br /> — <br /> PX atn/P•rf <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 for \� <br /> perforated lateral = inches. .,,. <br /> 9. If rerforated lateral system is attached to manifold pipe near '�`•'"''' <br /> the center,lower diagram,perforated lateral length Pand <br /> number of perforations per lateral will be approximately one �'' •r4 <br /> half of that in step 8. Using these values, select minimum "" �,,,,.•�\ <br /> diameter for perforated lateral inches. �,,.'' <br />