Page 141 - Handbook of Materials Failure Analysis
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4 Current Analysis and Design Methods    137




                         RSL (Rail seat load)                 RSL
                                              L c                                   L c



                    Sleeper/ballast pressure distribution    Bending moment diagram










                                             “S6” Steel sleeper
                                            (6 mm strip section)








                                            “W14” Steel sleeper
                                           (14mm rolled section)










                                           Mainline timber sleeper











                                         Heavy haul concrete sleeper
                  FIGURE 6.11
                  Sleeper support stiffness on ballast pressure and sleeper bending moment.
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