Give an example of periodic damage.

• A. Abrasion from frequent stepping on a surface daily.
• B. A pipe bursts once.
• C. Vandalism occurs randomly.
• D. New installation causes temporary disruption.

Answer: (A)

Periodic damage is damage that results from repeated action over time. Abrasion from frequent stepping on a surface daily fits this idea because the same motion and load happen again and again, gradually wearing the surface through ongoing use. The other scenarios are not periodic: a pipe bursting is a one-time event, vandalism occurring randomly is irregular and lacks a predictable repeat pattern, and a new installation causing temporary disruption is a short-term effect, not ongoing damage from repeated use.