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PIZESSUKL DISTIZIBUI-I_C)N SYSTEM t.cotextilc•tatm( <br /> 1 Select number of perforated laterals 3 _ FL 12.. <br /> IQuarter inch perforations spaced®3' <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 /> Pert Spacing 1-5'-5' <br /> the edge of the rock layer (see diagram), subtract 2 ft. from <br /> the rock layer length. <br /> Roca,63,gth - 2 ft. = 6 l feet. <br /> Requited Perforation Discharge <br /> 4. Determine the number of spaces between perforations. in gallons per nunu1ftgpmi <br /> Divide the length above by perforation spacing and round Dei` :�"" ;* <br /> down to nearest whole number. (r. <br /> 1.0a 0.56 0.74 <br /> 2.0b 0.80 1.04 <br /> Length perf. spacing = 61 ft. _ 3 ft. = spaces _ <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 per <br /> ZO spaces + 1 = 2,1 perforations/lateral lateral to guarnantee<10%discharge variation <br /> Perforation <br /> 6. Multiply perforations per lateral by number of laterals to SPaci g 1% 1 i 2 <br /> get total number of perforations. 2.5 14 18 28 <br /> x Z I = 6.3 perforations. <br /> 3.0 13 17 26 <br /> laterals pens/lateral P <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 o-?y _/../7 <br /> perfs gpm/perf gPm MamWIU LOCATED AT ero of PRESSURE oTsrnreuraH s*srrw <br /> ,..`` <br /> 8. If laterals are connected to header pipe as shown on upper <br /> example, to select minimum required lateral diameter; enter d-''-- .ice <br /> table with perforation spacing and number of perforations % .,��, <br /> per lateral. Select minimum diameter for `? <br /> perforated lateral = pp" inches. <br /> L� 1 04 ---UrCRaLS Ip.. <br /> rp'e4(4/C fM SrY�r.Ow F..U..4 <br /> �_a w•(ee�..�. Q ref <br /> 9. If perforated lateral system is attached to manifold pipe near =� r-'---"'"--.��� ' ";W,..— ___------ <br /> the <br /> ----=the center, lower diagram, perforated lateral length and - --,;«�,�,.��-- <br /> number of perforations per lateral will be approximately roximately one , <br /> pP -- .•.:.:_- <br /> half of that in step 8. Using these values, select minimum ., <br /> diameter for perforated lateral = _VVI inches. .-,-- ,,,,,,'���� _.�, _. <br />