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Chapter 7. Post-Earthquake Data Collection
This chapter provides motivation for collection of post-earthquake nonstructural component data and resources for conducting systematic collection of data for two selected nonstructural components.
There have been no publically available systematic, quantitative post-earthquake investigations of nonstructural damage. This is due to the following:
- Focus has been on structural damage;
- Nonstructural damage is perishable since it is cleaned up immediately, leaving little evidence of the original damage;
- Access to the interiors of buildings is limited because the buildings may contain proprietary information or damage that owners do not want to publically share;
- There are many different types of nonstructural components and it is extremely time consuming and complicated to obtain information in sufficient quantity and detail to draw meaningful conclusions on which to change or validate design and/or construction practices; and
- No one has the time or resources to do this.
However, until comprehensive nonstructural damage information is available, the practice will continue to rely on an incomplete understanding of the performance of some nonstructural components and base the designs on standards of practice that may be lacking or even incorrect.
Collection of these data is essential to advancing the protection of nonstructural components. In an effort to provide an initial data collection tool, data collection forms for two of nonstructural components have been developed for use in immediate post-earthquake situations: one for suspended acoustic tile ceilings and one for metal stud partitions. The forms are provided in Appendix F along with instructions. These forms are intended to serve as a starting point for data collection subject to revision and refinement as they are used in the field. Other similar forms can be developed for other systems and components when resources become available.