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Lumber grading

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Does anybody know when lumber grading started in a formal way, and when grading rules were generally required for use of lumber in construction throughout the United States?

 

Thanks in advance

 

Dave Puskas, P.E.

Senior Engineer (Structural)

BSW International - Tulsa

Email : dpuskas(--nospam--at)bswintl.com

Telephone : 918-295-4213