Fema 360

FEMA 306
EVALUATION OF EARTHQUAKE DAMAGED CONCRETE AND MASONRY WALL BUILDINGS Basic Procedures Manual
Prepared by:

Applied Technology Council (ATC-43 Project)
555 Twin Dolphin Drive, Suite 550 Redwood City, California 94065

Prepared for:

The Partnership for Response and Recovery
Washington, D.C.

Funded by:

Federal Emergency Management Agency

1998

Applied TechnologyCouncil
The Applied Technology Council (ATC) is a nonprofit, tax-exempt corporation established in 1971 through the efforts of the Structural Engineers Association of California. ATC is guided by a Board of Directors consisting of representatives appointed by the American Society of Civil Engineers, the Structural Engineers Association of California, the Western States Council of Structural EngineersAssociations, and four at-large representatives concerned with the practice of structural engineering. Each director serves a three-year term. The purpose of ATC is to assist the design practitioner in structural engineering (and related design specialty fields such as soils, wind, and earthquake) in the task of keeping abreast of and effectively using technological developments. ATC alsoidentifies and encourages needed research and develops consensus opinions on structural engineering issues in a nonproprietary format. ATC thereby fulfills a unique role in funded information transfer. Project management and administration are carried out by a full-time Executive Director and support staff. Project work is conducted by a wide range of highly qualified consulting professionals, thusincorporating the experience of many individuals from academia, research, and professional practice who would not be available from any single organization. Funding for ATC projects is obtained from government agencies and from the private sector in the form of tax-deductible contributions.

1998-1999 Board of Directors
Charles H. Thornton, President Edwin T. Dean, Vice President Andrew T. Merovich,Secretary/ Treasurer C. Mark Saunders, Past President James R. Cagley Arthur N. L. Chiu Robert G. Dean Edwin H. Johnson Kenneth A. Luttrell Newland J. Malmquist Stephen H. Pelham Richard J. Phillips Charles W. Roeder Jonathan G. Shipp

Notice
This report was prepared under Contract EMW-95-C-4685 between the Federal Emergency Management Agency and the Partnership for Response and Recovery. Anyopinions, findings, conclusions, or recommendations expressed in this publication do not necessarily reflect the views of the Applied Technology Council (ATC), the Partnership for Response and Recovery (PaRR), or the Federal Emergency Management Agency (FEMA). Additionally, neither ATC, PaRR, FEMA, nor any of their employees makes any warranty, expressed or implied, nor assumes any legal liabilityor responsibility for the accuracy, completeness, or usefulness of any information, product, or process included in this publication. Users of information from this publication assume all liability arising from such use. For further information concerning this document or the activities of the ATC, contact the Executive Director, Applied Technolgy Council, 555 Twin Dolphin Drive, Suite 550,Redwood City, California 94065; phone 650-595-1542; fax 650-593-2320; e-mail atc@atcouncil.org.

Preface
Following the two damaging California earthquakes in 1989 (Loma Prieta) and 1994 (Northridge), many concrete wall and masonry wall buildings were repaired using federal disaster assistance funding. The repairs were based on inconsistent criteria, giving rise to controversy regarding criteria forthe repair of cracked concrete and masonry wall buildings. To help resolve this controversy, the Federal Emergency Management Agency (FEMA) initiated a project on evaluation and repair of earthquake damaged concrete and masonry wall buildings in 1996. The project was conducted through the Partnership for Response and Recovery (PaRR), a joint venture of Dewberry & Davis of Fairfax, Virginia, and...