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HSR - Coggle Diagram

- - - - TYPES OF GAUGE
        
        meter (1)
        
        broad(1.676)
        
        standard(1.43)
        
        23 others
        
        narrow(.762)
      - SUITABILITY
        
        broad -sufficient funds, bright revenue
        
        meter-inadequate funds,revenue dull
        
        narrow-hilly,thinly populated areas
      - CHOICE OF GUAGE
        
        cost considerations
        
        traffic considerations
- - - - ARCHES
      - SLAB BRIDGE DECKS
      - BEAM BRIDGES
      - BOX GIRDERS
      - EXTRADOS
      - CABLE STAYED
      - STRESSED RIBBON
      - INCLINED FRAME
- - - - rise or fall of one unit,
      - TYPES
        
        RULING
        
        plain-1,150-1,250
        hilly-1,100-1,150
        
        PUSHER
        
        steeper ,cheaper than ruling
        extra locomotive
        
        MOMENTUM
        
        STATION YARD
    - - SWITCHES
      - TURNOUT
      - CROSSING
      - P