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i <br /> 1 <br /> PRFSSURE DISTRIBUTION SYSTEM ENO PERFORATION of A PERFORATED LATLI,. <br /> �Gto•e tiara <br /> t. Select number of perforated laterals3 "'' 1 Topsoil <br /> tlmm•allle FYGr1L 1. <br /> Select perforation spacing = '3 Layer of feet. ';'!' Laamy sand Layer" ":.b.s Wier as hay •Irw• b... <br /> wllh f..l ,WM pap•rI <br /> { h•. {nla CJI, hear fry <br /> Since perforations should not be placed closer than 1 ft. to . 1. <br /> .. rol fl•Id Hocf of HucMLy,a <br /> the edge of the rock layer (see diagram), subtract 2 ft. from <br /> .Perlaalloll•LocolW as <br /> the rock layer length. clean sand Layer tJollom at Lanelol <br /> - , . -3 feet. Onamal Soll Pwpeny 5wr,h•d <br /> Kock layer length ` f t — fletae Plac,nj Sand Low <br /> - 1+ 1tK,{uued P�/WIPYYII U,.JLI s <br /> Determine the number of spaces between perforations. In:.I1w,.,sr,,J„lul,.;•1^f _ <br /> Divide the length above by perforation spacing and round °H. `` <br /> down to nearest whole number. <br /> 0.56 0.71 <br /> Length perf. spacing =3� ft,_1-'ft. spaces <br /> 2.Ob O.tiU 1. <br /> (3) (2) <br /> a.Use fur single family Iluaws <br /> b.Use for all.,tnrr ap filtl:atl.,ns <br /> Number of perforations is equal to one plus the r}umber of <br /> perforation spaces . <br /> 1� Maximum number of quarter itch pert,,rauuli <br /> Spaces t 1 = perforations/lateral lateral tu buarnantee<10%dixhargu variat., <br /> Perforatiotl <br /> Multiply perforations per lateral by number of laterals to sft,.jb 2 <br /> get total number of perforations. 7 14 18 28 <br /> X Z perforations. <br /> I 13 26 <br /> Kraprts/laera <br /> 3.3 12 16 25 <br /> 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 /> 41 <br /> Z f✓,(q = -•• 0wW wFaLOWED AT EMO OF PNGyu,L wSlwbul•w. <br /> Perla a bPln/perf gpm' <br /> 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 /> u.wT Of n,ew,111 1,11,.1•••.,f,w <br /> Ielss.wL,w.I.r.l•Y.w.•,,,d,nl <br /> r II-w•.0 q.MK/R <br /> if perforated lateral system is attached to manifold pipe near <br /> the center, lower diagram, perforated lateral length and <br /> number of perforations per lateral will be approximately one y-!, <br /> half of that in step S. Using these values, select ginimum <br /> diameter fur perforated lateral = inches, <br />