SYMPOSIA PAPER Published: 01 January 1964

“Stress-O-Matic” Stress-Rating System


The Western Pine Assn. Research Laboratory over the past four years has developed a long-sought mechanical stress rating system. The system was developed as an alternate means of stress rating of dimension lumber and provides: (1) More complete utilization of lumber’s inherent strength, (2) greater accuracy of stress rating lumber, (3) full length stress rating of the board, and (4) increased speed with greater reliability.

Author Information

Bolger, R., J.
Western Pine Association, Portland, Ore
Rasmussen, C., A.
Western Pine Association, Portland, Ore
Price: $25.00
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Developed by Committee: D07
Pages: 19–27
DOI: 10.1520/STP45113S
ISBN-EB: 978-0-8031-5995-2
ISBN-13: 978-0-8031-6149-8