Safe design means integrating control measures early in the design process to eliminate, or if that is not reasonably practicable minimise, risks to health and safety throughout the life of the structure. It sits alongside other design objectives such as practicability, aesthetics, cost and functionality, and these competing objectives must be balanced so far as reasonably practicable without compromising the health and safety of those who work on or use the structure. It starts at concept development, when decisions are made about the design and its purpose, materials, methods of construction, maintenance, operation, demolition or dismantling and disposal, and which legislation, codes and standards apply. Eliminating physical and psychosocial hazards in design is usually easier and cheaper than changing later.
The graph holds this control, the 0 it maps to, and the evidence behind each claim, over MCP and REST.