: Rather than designing structures to be infinitely strong (and heavy), engineers design them to be "ductile"—able to bend and dissipate energy without breaking.
: This allows designers to reduce the calculated elastic seismic forces based on the structure's ability to absorb energy through plastic deformation. Eurocode 8: Design of structures for earthquake...
The code is built around a "limit state" philosophy with three primary goals: : Rather than designing structures to be infinitely
: A strategic approach where certain "dissipative" parts (like beams) are designed to yield first, while critical "non-dissipative" parts (like columns and foundations) are kept stronger to prevent total collapse. Major Changes in the Second Generation (EC8-2G) Eurocode 8: Design of structures for earthquake resistance Major Changes in the Second Generation (EC8-2G) Eurocode
Eurocode 8 is famously "force-based," though it is increasingly incorporating "displacement-based" methods for assessment.
: Ensuring structures do not collapse under rare, intense earthquakes.
: Minimizing structural damage during more frequent, smaller quakes to keep repair costs manageable.