Theory 31/Decades/Infrastructure
Infrastructure Ages on a Ratio
The claim
Infrastructure condition is set by the ratio of maintenance interval to degradation rate rather than by age, so two assets of the same age can differ by decades in remaining life.
01Mechanism
Condition is an integral of degradation offset by maintenance; the ratio determines the steady-state level.
02Prediction
Condition should track the ratio.
03Refutation
Condition tracking age would remove maintenance.