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FROM : RYS PHONE N0. : 4422091 Jul. 02 2003 09:19AM P7 PRESS QRE DISTRI13IMON SYSTUM 1. Select number of perforated laterals 2. Select perforation spacing = :3 ft. I Since perforations should not be placed closer than 1 ft. to the edge of the rock layer (see p. E-14),subtract 2 ft.from the rock layer length. Rock layer length-Z ft. 4. Determine the number of spaces between perforations. Divide the length above by perforation spacing and round E-17a down to nearest whole number. TAA18jLP-0FPEgMRAT10N DLSCHAR ES 1!V= Head Perforation diameter(inches) Length perf. spacing =40 ft. + ft. = spaces i4 c3i (z) 1.Oa 0.56 ala 1.5 0.90 5. Number of perforations is equal to one plus the number of 2.Ob 0.80 1.04 2.5 0.89 1.17 perforation spaces. 3.0 0.98 1129 4.0 1.13 1.47 5.0 126 t_65 spaces +1 = perforations/lateral 7U-se 1.0 foot of head for residential systems. bUse 2.0 feet of head for other establishments & Multiply perforations per lateral by number of laterals to get total number of perforations. E-l7b �i xerforations_ .�...,.�. laterals pelfs/lateral p 1.25 inch 1.5 inch 2.0 inch 23 14 18 28 7. Determine required flow rate by multiplying 3.0 13 17 26 number of perforations by flow per perforation 4 o 11 is 23 (see page E-17) 5.0 10 14 22 11R 13 Perfs x V--pert gpm- E 15 ,ar 8. If laterals are connected to header pipe as shown on page E- 15,select minimum required lateral diameter from table on �- page E-17;enter table with perforation spacing and number ,�'' werM of perforations per lateral. Select minimum diameter for perforated lateral = inches. E-12 =M=1r= 9. If perforated lateral system is attached to manifold pipe near �'�"��.� �,.• the center, as on page E-12,perforated lateral length and 6 4.41 number of}perforations per lateral will be approximately one half of that in step 8. Using these values,select minimum diameter for perforated lateral from page E-17 as �✓''� inches.