Structural vulnerability quantifies how likely a building is to suffer damage when subjected to natural hazards such as earthquakes, wind, or floods. It integrates the physical properties of the construction, the age of the structure, and the local hazard intensity. By assigning numeric scores to each attribute, engineers can compare buildings across regions and prioritize retrofitting efforts.
The choice of construction material and the quality of workmanship are the dominant factors that control a building’s resistance. Masonry, wood, steel, and reinforced concrete each exhibit distinct deformation capacities and failure modes. Additionally, the condition of the foundation and the presence of seismic detailing dramatically affect the overall resilience.
A composite vulnerability index is calculated by weighting each attribute according to its contribution to overall performance. The following formula illustrates the aggregation of weighted resistance ratings:
What factors are considered in calculating structural vulnerability?
How is structural vulnerability quantified?
Why is it important to calculate structural vulnerability?
Can this calculator be used for any type of building?
How do engineers use the results from this calculator?
Results are for informational purposes only and do not constitute professional advice.