Show coverage
A condition chart should reveal how much of the portfolio has current assessments and how much is unknown.
Show age of information
A good score based on a decade-old inspection should not look equivalent to a recent assessment.
Separate condition and consequence
Poor condition does not always mean the same service impact across assets.
Allow drill-down
Decision makers need a path from portfolio summary to the records behind unusual results.
Scope. This page explains asset-management concepts, not operating procedures for critical infrastructure. Inspection methods, intervention thresholds and safety decisions must follow the asset owner’s standards, local rules and qualified professional judgement.