Standards & guidance · Defined
ASTM E2557 — Earthquake loss evaluation
An ASTM practice for probable maximum loss evaluations used in earthquake due diligence.
Standards references reviewed September 15, 2026. These summaries explain purpose, not the full standard. Confirm the edition required by your contract, program, and jurisdiction; publication of a newer edition does not automatically change local requirements.
Why it matters
A loss estimate needs its scenario, confidence basis, and valuation assumptions. A percentage without that context is not enough to compare reports or determine a lender’s acceptance.
In practice
A project example
Two seismic reports use different loss measures, so their headline percentages are not directly compared.
Technical references
General educational guidance from KOW Building Consultants. Examples are illustrative, not project records. The applicable contract, standard, program, and jurisdiction control the requirements for a specific assignment.