A Grading Protocol for Structural Lumber and Timber in Historic Structures (2009-01)

Acknowledgements

Anthony and Associates Inc. would like to thank the many people who were willing to volunteer their time and knowledge for the completion of this project. Reviewers of the Microsoft Access program are too numerous to mention but coordination by Derek Trelstad of Robert Silman Associates, P.C., input from Kevin Cheung of the Western Wood Products Association and Brad Shelley of
the West Coast Lumber Inspection Bureau proved invaluable. We thank Ms. Lynn Neese for her work in taking our cryptic ideas and converting them into a usable computer database and query program. We also acknowledge the administrative support of the Association for Preservation Technology International and the financial support of the National Center for Technology and Training that made this work possible.

This document was developed under a grant from the National Park Service and the National Center for Preservation Technology and Training. Its contents are solely the responsibility of the authors and do not necessarily represent the official position or
policies of the National Park Service or the National Center for Preservation Technology and Training.

Ronald W. Anthony, Wood Scientist, Anthony & Associates, Inc.
Kimberly D. Dugan, Preservation Specialist, Anthony & Associates, Inc.
Deborah J. Anthony, Geologist, Anthony & Associates, Inc.

Disclaimer

Any design or structural analysis requires that the engineer or architect rely on published data and standards when conducting their analysis. Nonetheless, it is the sole responsibility of the designer (engineer, architect, consultant, or other professional) when making a decision to base their analysis on any calculations or technical data. Paramount to that responsibility is an understanding of the basis of the information or data upon which they rely. This report, database, and program have been produced based on publically available information. Some of that information comes from grading rules promulgated by various trade associations, or grades identified within the National Design Specification for Wood Construction. None of the trade associations that produced the grading data or the American Wood & Paper Association are responsible for the production of the report, database, or program generated under this project. The National Center for Preservation Technology and Training and the Association for Preservation Technology International, while providing either financial or administrative support, are not responsible for the content or use of the information by individuals. Anthony & Associates, Inc., while soliciting review from industry and trade professionals, as well as practitioners familiar with timber design and grades, does not warrant that the data in the program have not, or will not change as changes to the grading rules take place. As such, it is the responsibility of any user of this database and program to understand the information being provided and accept sole responsibility for its use.

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