United Nations Office for Disaster Risk Reduction (UNISDR) [ 2 February 2017 ]
Reinforcement or upgrading of existing structures to become more resistant and resilient to the damaging effects of hazards.
Annotation: Retrofitting requires consideration of the design and function of the structure, the stresses that the structure may be subject to from particular hazards or hazard scenarios and the practicality and costs of different retrofitting options. Examples of retrofitting include adding bracing to stiffen walls, reinforcing pillars, adding steel ties between walls and roofs, installing shutters on windows and improving the protection of important facilities and equipment.
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