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Material Selection - Coggle Diagram

- - - - Low Cost
        
        Pre-fabricated sheet stock (SC4)
      - Ductility
        
        Able to support its own weight and absorbs energy on high speed impacts (SC2)
      - Weldability
        
        Easily manufacturable (SC4)
  - - - Easily breakable
        
        Enables the arm to break predictable on high speed impact, ensuring the safety of road users (SC2)
      - Superior weather resistance
        
        Can withstand high UV and corrosive wind conditions of Coorparoo area without degrading (SC6)
      - Affordable
        
        Can be easily replaced without substantially increasing the budget (SC6)
- - - - Structural Integrity
        
        The bollard must be very durable with respect to high velocity impact (SC6)