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Pressure Distribution Design Worksheet <br /> File it. SDI ODO17 <br /> 1. Media sed Width: 10 <br /> 2. Minimum Number of laterals in system/zone-Rounded UP nunber of[(Media Bed Width-4)+3]+1. <br /> [( 10 -4)+31+1 = 3 Ilaterats Does not apply to at-grades <br /> 3. Designer Selected Number of Laterals- 3 laterals - - <br /> Cannot be less than tine 2(accept in at-wades) . <br /> Select Perforation Soadrm 'r <br /> 5. Select Perforation DimWer Size: 1/4 lin <br /> 6. LeneQ of Laterals =Media Bed <br /> 50 - 2ft = 48 ft Perforation can not be closer then 1 foot from edge. <br /> 7. Determine the Number of Perforation Spaces. Divide the LOOM of Laterals by the Perforation Sparing <br /> and round down to the nearest whole number. <br /> Number of Pertmation Spaces 4 ft + 2.5 ft = 19 Spaces <br /> Number of PW faratiora per Lateral is equal to 1.0 plus the Number of Perforation Spaces. Check table <br /> 8. below to verify the number of perforations per lateral guarantees less than a 10%discharge variation. The <br /> value is double with a center manifold. <br /> Perforations Per Lateral = 19 Spaces + 1 = 20 �. Per Lateral <br /> PYaaouw M.nb..en P�efarado.as P`r tabol tr Guara.b.i tolb sisd�ye variden <br /> DOOM 'rill hxh PwWadom <br /> Mw Oran~Ondwsl Pw%radon Spedod Pipe Dow~*OdW n <br /> Pwfo-van spans W-wcl 1 1% rn 1 z 1 3 (Feeti i 1 tib 1 1tt 2 3 <br /> 2 to 13 td 30 611 2 11 16 1 21 34 bs <br /> 2*: d 12 16 23 54 2n 10 14 1 20 32 64 <br /> 3 d 12 16 23 62 3 9 14 A 30 60 <br /> 3!16 inch pefferatioro 1.15 Wh perlorataom <br /> pipe F)iarncter 4h Prxioradur►SP8dn9 ripe vWr,"r ORA") <br /> Pwf°%"- W06a1 116 tr: 2 3 Weed 1 116 11: 2 3 <br /> 2 12 1d 26 46 97 2 21 33 44 74 1 14! <br /> 21t 12 17 24 40 so 232 20 30 41 69 135 <br /> 3 12 1 14 22 37 75 3 20 29 38 1 44 12d <br /> 9. Total Number of Perforations equals the Number of Perforations per Lateral multiplied by the Number of <br /> Pe orated Laterals. <br /> 20 Perf. Per Lat. X ��Number of Pelf. Lat. = 60 Total Number of Pert. <br /> 10. Select Type of Manifold Connection (End or Center): end <br /> 11. Select LaLeng pkmw&ff ISee 7 2.00 lin <br /> 12. Calculate the Square Feet per Perforation. Recommended value is 4-11 ft per perforation. <br /> Does not apply to At-Grades <br /> a. lsea Area - WO wlmn int)x WO LengIn(n) <br /> 10 ft X ® ft = ®ftz <br /> b. 5=U F402tper Pif fora = divided by the T i r Perforations. <br /> 500 fe + 60 erforawns - 8.3 ft2/perforations <br /> 13. Select AOnimum Average Head: 1.0 ft <br /> 0. 4 GPM per PerforatioPerforation14. Select Perforation Disdnarge (GPM)based on Table: <br /> PtTrfL the Perforation <br /> 15. required F1 tlltiplying���0.170 <br /> 45 GPM �. <br /> L Perfs X 0.74 GPM per <br /> 16. Volume of LiWW Per Foot of Distribution PipinGallons/ft -if <br /> 17. YO(UM OJ UUMDUrlan Ylpnig s vblw. oT LA-q@04 <br /> quta to <br /> _[Number of Perforated Laterals X Length of Laterals X(Volume of Liquid Per wp..MDW"ted <br /> o`er r <br /> Foot of Distribution Piping] <br /> 3 X r 48 ft X 0.170 gal/ft = 24.5 Gallons 0-�s <br /> a.2s o_o�s <br /> 18. = Piping X 4 �. 0. 0 <br /> 24.5 gals X 4 = r -�Gallmm 2 o <br /> 3 Q3s0 <br /> 4 <br /> PWW, <br /> i - wwNMd rM- <br /> P"horn qwY <br /> wes .0poi- <br /> .Yrwtls <br /> �•. - .rMr�..w w.v <br /> abw.wayr LsrwsMw w. <br />