Laserfiche WebLink
PRESSURE DISTRIBUTION SYSTEM END PERFORATION OF A PERFORATED LATERAL <br /> -crass cov.r <br /> 1. Select number of perforated laterals Topsoil AW <br /> of Geolexille Fabric for foLr,' <br /> Sand Lam krc layer of hOY or strove covvred <br /> with red rosin pow) <br /> 2. Select perforation spacing feet. IK7 <br /> --kCrWrorallon or Lzontally <br /> • into p Now Top <br /> A Least 12"to Ed9* <br /> Dra IIA <br /> 3. Since perforations should not be placed closer than 'I ft. to n Field Rof Rcw*Layer LAI PIUS At <br /> the edge of the rock layer (see diagram),subtract 2 ft. from NO ofl*M Located at <br /> the rock layer length. Bottom of Lateral <br /> Clean Sand Layer <br /> -zorl'ina <br /> I Solt Property Scuttled <br /> .7=72 ft. Before or'I Placing Sand Layer <br /> Rock layer length <br /> 4. Determine the number of spaces between perforations. %jW;2 ry <br /> Fcrforwt�oDischarge <br /> Divide the length above by perforation spacing and round aiv ns par ounute(SpWj <br /> = 31.6rd <br /> down to nearest whole number. (&Vt) <br /> 1.0a 0.56 0.74 <br /> Length perf. spacing = ft.1 3 ft. 7 spaces 2.Ob 0.80 1.04 <br /> (3) (2) a.Use for single family homes <br /> 5. Number of perforations is equal to one plus the number of b.Use for all other applications <br /> perforation spaces . <br /> /I — Maximum number of quirter inch perforations pez <br /> spaces + perforations/lateral lateral to guarmntee<10%discharge variation <br /> Perforation <br /> pactg <br /> 6. Multiply perforations per lateral by number of laterals to S?feet) 1-4 M 2 <br /> get total number of perforations. 2.5 14 18 28 <br /> . 3 /.5- z <br /> lateral s x = /-5— erforations. 3.0 13 17 26 <br /> periviateral —p 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 /> C/� .7 <br /> — X FOLO LOCATED AT END OF PFMSWK oisTnieurm systEm <br /> ,erfs j;;�/—p—erf 9PM' <br /> —XV <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 We <br /> perforated lateral = inches. <br /> LATOUT Or KRroftra RPE LATt"LS MR <br /> Mf.SSLQE D.27MWIlm W .W10 <br /> C'=——0 <br /> E- <br /> 9. If perforated lateral system is attached to manifold pipe near WE- K <br /> the center,lower diagram,perforated lateral length and <br /> number of perforations per lateral will be approximately one <br /> half of that in step 8. Using these values,select minimum <br /> diameter for perforated lateral = ZY'/ inches. <br /> 65 <br />