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• PIZ-LSSURL DISTRIBUTION S1 STEM (,et+trxtih' lahn, <br /> 1 Select number of perforated laterals 3_ <br /> Quarter inch perforation!,spa(ed 0)3' [1, 12 <br /> • <br /> • <br /> 2. Select perforation spacing = 3 feet. 9"of rock <br /> 3. Since perforations should not be placed closer than 1 ft. to Pert Sizing 7/32 - 1/4" <br /> Perf Spacing 1.5.- 5. <br /> the edge of the rock layer (see diagram), subtract 2 ft. from <br /> the rock layer length. <br /> Rock layer length <br /> - 2 ft. _ t 1 feet. <br /> D <br /> 4. Determine the number of spaces betweenperforations. Ren Mons `renin minute p per vunute(gptn) <br /> Divide the length above by perforation spacing and round °i ` <br /> Hud '3,--3'.." ;.,...o.,, <br /> down to nearest whole number. (feet) <br /> 1.0a 0.56 0.74 <br /> Length perf. spacing = 6 ' ft. _ 3 ft. = 2° spaces 2.0b 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 /> ZU Maximum number of quarter inch perforations per <br /> spaces + 1 = 1 \ perforations/lateral lateral to guarnantee<10%discharge variation <br /> Perforation <br /> 6. Multiply perforations per lateral by number of laterals to SPS <br /> pacing 1 a Pi 2 <br /> get total number of perforations. 2.5 14 18 28 <br /> 1 �s x `3 13—perforations. 3.� 13 17 26 <br /> /'� 3.3 12 16 25 <br /> 7. Determine required flow rate by multiplying 4.0 11 15 23 <br /> number of perforations by flow per perforation 5.0 10 14 22 <br /> 63 x = L/7 7 gp m. MANIFOLD LOCATED AT EW Or FMESA1t( D6iR1&frioN M7EM <br /> Perls gpm/Perf / <br /> 8. If laterals are connected to header pipe as shown on upper i'� <br /> example, to select minimum required lateral diameter; enter / - i <br /> table with perforation spacing and number of perforations `�-�s / <br /> per lateral. Select minimum diameter for ,-�r` <br /> perforated lateral = _ inches. <br /> .. , o, .a ,.C Ital,OM <br /> 9. If perforated lateral system is attached to manifold pipe near >"- '` :� ' """�� <br /> the center, lower diagram, perforated lateral length and _--,---.. • o <br /> number of perforations per lateral will he approximately one f �' s:L,... <br /> half of that in step 8. Using these values, select minimum `" <br /> diameter lot perforated lateral = ) inches. <br />