How can a major railway or industrial system be made natural-disaster-proof?
Short answerIt cannot be made proof against every event; designers harden it to credible limits and preserve the ability to rebuild after larger disasters.
NotesNo infrastructure can be protected against every natural disaster. Engineers can design for defined flood levels, earthquakes, tides, or other expected hazards, but an extreme event can still exceed those assumptions. Repeated rebuilding in Japan and British coastal railways damaged by waves provide examples of recovery after failure. Resilience includes repair capacity, replacement resources, and access after the event alongside stronger initial construction. This logic also applies to remote settlements where an irreparable system would become a single point of failure.