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1. Select number of perforated laterals 3 <br />2. Select perforation spacing = 3 feet. <br />ENO PERFORATION OF A PERFORATED LATERAL <br />Prow Gwr <br />Tywe <br />Low" furls Low of GwaW Fork (r f . <br />tM 4M�tw-. C"Wed <br />Per 416 Wft Yak IlwkMbllT <br />3. Since perforations should not be placed closer than 1 ft. to w � �I to Ed" <br />the edge of the rock layer (see diagram), subtract 2 ft. from IuhrMklr'tanfN <br />of <br />the rock layEr length. Cie" Sod tapr Bottom N Worst <br />�-�OrfalnN SNI AN�fh 3wIhN <br />� �� 2 ft. __ feet. M� Mme.:«+ f.,. <br />4. Determine the number of spaces between perforations. <br />Divide the length above by perforation spacing and round <br />down to nearest whole number. <br />Length perf. spacing as YIP ft. + 3 ft. spaces <br />(3) (2) <br />5. Number of perforations is equal to one plus the number of <br />perforation spaces. <br />/C spaces + 1 =1Z perforation sAateral <br />. 6. Multiply perforations per lateral by number of laterals to <br />get total number of perforations. <br />X 1�/t=al = 51 perforations. <br />7. Determine required flow rate by multiplying <br />number of perforations by flow per perforation <br />57 x �=38gpm. <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 <br />perforated lateral = VY inches. <br />rlfOrM <br />r �Jbr der wiwr <br />He" <br />ONO <br />13: <br />1.Oa <br />0.56 <br />0.74 <br />2.Ob <br />0.80 <br />1.04 <br />a. Use for single family home <br />It. Use for all other applications <br />Maximum number of quarter inch perforations pe <br />lateral to guarnantee < 10% discharge variation <br />Perforation <br />5=9 <br />13: <br />2 <br />2.5 <br />14 18 <br />28 <br />3.0 <br />13 17 <br />26 <br />3.3 <br />12 16 <br />25 <br />4.0 <br />11 15 <br />23 <br />5.0 <br />10 14 <br />22 <br />rr/Ra larATO AT pp Or rOOOM OrpMInm strim <br />9. If perforated lateral system is attached to manifold pipe near a <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 = inches. <br />�, ✓ 1�7c""r..r <br />