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                    20  Chapter 1  Introduction to Water Systems





























                                                                                       Figure 1.8 A Pipeline in the
                                                                                       Goldfields Water Supply Scheme,
                                                                                       Perth, Australia
                                                                                       Source: http://en.wikipedia.org/
                                                                                       wiki/Image:Goldfields_Pipeline_
                                                                                       SMC.JPG



                                         service storage establish the type of distribution system and its character of flow. In
                                         accord with the street plan, two distribution patterns emerge: (a) a branching pattern
                                         on the outskirts of the community, in which ribbon development follows the primary
                                         arteries of roads and streets (Fig. 1.9a), and (b) a gridiron pattern within the built-up
                                         portions of the community where streets crisscross and water mains are interconnected
                                         (Fig. 1.9b).




                                                                                       Feeder
                                                                  Branch
                                                                                                  Gridiron


                                                               Feeder






                                                  (a) Branching pattern             (b) Gridiron pattern with
                                                    with dead ends                     looped feeder
                                                                High value district is crosshatched
                                                  Figure 1.9 Patterns of Water-Distribution Systems
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