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SITE ADDRESS 7ZNk44_Ajyk It�o a INSTALLER <br /> PRESSURE DISTRIBUTION SYSTEM WORKSHEET - RESIDENTIAL <br /> A. Number of laterals l0 OA <br /> B. Perforation spacing 3 ft OB <br /> C. Rock layer length 3-?,S ft less 2 ft = ,S—ft C� 3 <br /> (total length if end load) <br /> (h total length if ctr load) <br /> D. Number of spaces between perf's = O/OB = spaces OD <br /> E. Number of perf' s per lateral =@+ 1 = 3 perfs /lat. EO <br /> F Total perforations =OA xEO= -78 perforations(2 <br /> G. Flow rate per perf: If 1/4" perfs, use 0.74 g m G <br /> f 7/32" pe s, use .5 gpm <br /> H. Required flow rate = F�x G�=* gPm <br /> ***** ******** <br /> STANDARD REQUIRED FLOW RATES ( 1/4" perfs, 3' spacing) <br /> Rock Bed Length 37.5' 40.0' 50.0' 55.0' 63.0' 70.0' <br /> Bedrooms 3 3+10% 4 4+10% 5 5+10% <br /> Total # perfs 36 39 51 54 60 72 <br /> REQ'D GPM 26.6 28.8 37.7 40.0 44.4 53.3 <br /> TO REDUCE REQ'D FLOW RATE: <br /> 1 . Use 7/32" perfs instead of 1/4" (Reduce GPM by 25%) <br /> OR <br /> 2. Reduce number of perfs by increasing spacing between perfs <br /> (Maximum spacing allowed = 5.01 ) (Re-calculate A thru H) <br /> MAXIMUM ALLOWED PERFS PER LATERAL ; <br /> End load Cent 2jd <br /> Perf spacing, ft Lateral diam. : 1 .5" 2.0" * 1 .5" " <br /> 2.5 - - - - - - - - - - - - - - 18 28 * 9 14 <br /> 3.0 - - - - - - - - - - - - - - 17 26 * 9 13 <br /> 3.3 - - - - - - - - - - - - - - 16 25 * 8 <br /> 4.0 - - - - - - - - - - - - - - 15 23 * 8 12 <br /> 5.0 - - - - - - - - - - - - - - 14 22 * 7 11 <br /> SIDE 1 OF 2 <br />