# Tectonic hazards/Earthquake loss estimation

Educational level: this is a research resource. |

**Earthquake loss estimation**, required for the seismic fitness considerations, is usually performed in terms of a *Damage Ratio* (**DR**) which is a ratio of the earthquake damage dollar amount to total value of a building.^{[1]} For a long time, it was associated with a collection of mass inventory data and was based, mostly, on experts' opinions. It looked, therefore, more like an art than a science.

A considerable step forward was made with the completion of project called HAZUS offering a fully computerized procedure for loss estimation. However, *motion-damage relationships* of HAZUS are not written in the building code language. Besides, they are based, at least partially, on experts' judgments valid just for an average construction and, therefore, most applicable for a statistically large number of facilities.

There is, also, the *Damage Ratio Charts Method* which is based on a consistent quantitative analysis targeting a prediction of *damage ratios* and employs a limited number of well-understood structural and earthquake related parameters.^{[3]} It establishes a direct theoretical relationship between the standard structural design procedure and the expected damage characteristics required by insurers.

The method is user-friendly: its application, supported by a site-specific evaluation, does not take more than a few days.

Wikibooks has a book on the topic of .Seismic fitness |

## References

edit- ↑ EERI Endowment Subcommittee (May 2000).
*Financial Management of Earthquake Risk*. EERI Publication. ISBN 0943198216. - ↑ BUILDING DESIGN CODE and EARTHQUAKE INSURANCE
- ↑ Shustov, V. (1997).
*Future Seismic Codes and Earthquake Insurance, Proc. 66th Annual SEAOC Convention, San Diego, CA*. SEAOC.