A staged approach to seismic risk.
An effective seismic evaluation begins by understanding the building as it actually exists. Construction era, structural system, alterations, deterioration, diaphragm behaviour, connections and foundations all influence performance. We organize available information, identify critical gaps and increase the level of analysis only where it changes the decision.
For buildings with limited records, targeted openings and material testing can establish properties needed for a defensible model. The evaluation then focuses on global response, load paths and local components whose behaviour may control risk.
Evaluation and retrofit scope
Strengthening where it creates value
Identify controlling deficiencies
We distinguish critical weaknesses from secondary observations so that attention is directed to the elements that govern performance.
Compare feasible interventions
Retrofit concepts are considered in relation to effectiveness, disruption, heritage or architectural constraints, constructability and cost.
Communicate residual risk
Assumptions, limitations and expected performance are documented clearly so owners can make informed investment and occupancy decisions.