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1. Select number of perforated laterals_ <br />2. Select perforation spacing = _7 ft. <br />3. Since perforations should not be placed closer than 1 ft. to <br />the edge of the rock laver (see p. E-14), subtract 2 ft. from the <br />rock laver length. <br />Rak u�knR4h f t. =— ft. <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 = 1& ft. + ft. = 1 spaces <br />(3) (2) <br />5. Number of perforations is equal to one plus the number of <br />perforation spaces . <br />spaces + 1 = / % perforations/lateral <br />6. Multiply perforations per lateral by number of laterals to <br />get total number of perforations. <br />3 at. x F.�/7 y= -s- perforations. <br />!. Ce=e=-,..e re: -j --:ed f:cw :a -e by tr;:_:plytng <br />number of perforations by flow per perforation <br />(see page E -17) <br />.5-1 . 7 <br />X —?7 5.,M <br />tet, <br />S. If laterals are connected to header pipe as shown on page E- <br />15, select minimum required lateral diameter from table on <br />page E-17; enter table with perforation spacing and number <br />of perforations per lateral. Select minimum diameter for <br />perforated lateral = I `/z inches. <br />E -17a <br />Head <br />Pertcrrouon di=eter (inches) <br />7/32 IN <br />103 <br />056 071 <br />1 S <br />069 0 9C <br />2 O <br />^ 90 103 <br />2 i <br />094 17 <br />30 <br />0.93 I <br />40 <br />1.13 1 37 <br />�S <br />126 1 65 <br />allse 10 (M1N of 4Nd for residential fY fans <br />bt;se 2.0 fee <br />of head for other esubluh,nents <br />9 If perforated latera: system is attached to manifold pipe near <br />the center, a: on page E-12, perforated lateral length and <br />„um. cr of perforations per lateral %%ilt b, approximately one <br />half of that in sten h. Using these values, select minimum <br />diameter for ju-furated lateral from page E-17 as / Vz- <br />Inches <br />E -17b <br />M <br />E-12 <br />1._5 Ln :n 1.5 tncn I r <br />lf:.-. <br />2-5 <br />1. la <br />3.0 <br />13 1 i <br />:5 <br />3-3 <br />12 16 i <br />-,5 <br />CO <br />11 15 <br />_3 <br />� it <br />10 13 <br />M <br />E-12 <br />