C.6.6 Selecting the pipe sizeRefer

C.6.6 Selecting the pipe sizeRefer to Table C.6.5, select the pipe size as follows:(a) Determine main run length (see Clause C.6.3).(b) If the main run falls between two figures, use the greater.(c) Section A–B has a total flow rate of 463 MJ/h. Follow the 16 m column down until the value of 463 or the next larger value is reached, in this case, 718.(d) Read across to the column (“Nom. dia. DN”) to obtain the pipe size, 32 mm in this example.(e) Insert the pipe size in the prepared table (see Table C.6.6).(f) Determine the pipe size of the remaining sections, continuing to use the main run length (16 m in the example), not the individual length of each section.Table C.6.6 — Installation detailsPipe section Main run, m Gas flow, MJ/h Nominal size DNA–B1660 + 135 + 80 + 188 = 463 32B–F 80 + 188 = 268 25B–C 60 + 135 = 195 25C–D 135 20C–E 60 20F–G 188 25F–H 80 20C.6.7 Pipe sizing tablesPipe sizing tables for LP Gas (propane) in copper pipe to AS 1432 are given in Table C.6.7(A) and C.6.7(B).Pipe sizing table for LP Gas (propane) in copper pipe to NZS 3501 are given in Table C.6.7(C).