ABSTRACT
ABSTRACT The final draft of CEN Technical Specification (TS) on assessment of existing structures is linked to the probabilistic concepts and fundamental requirements of the EN Eurocodes. The document concerns all types of buildings, bridges and construction works, including geotechnical structures, exposed to all kinds of actions. The final draft of the Technical specification contains requirements, general framework of assessment, data updating, structural analysis (linear, nonlinear, dynamic), verifications (partial factors, probabilistic methods, risk assessment), past performance, interventions, annexes (flowchart, time-dependent reliability, assessment of heritage structures). The submitted contribution provides background information on the principles accepted in the TS. Particular attention is given to verification of the target reliability levels and operational procedures in engineering practice including partial factors method, design value method, probabilistic approach and methodology of risk assessment.
