Hardwood Log Grading in the United States—Part II: United States Forest Service Log Grades and the Hardwood Industry
FOREST PRODUCTS JOURNAL(2019)
摘要
The major effort to develop hardwood log grades was undertaken by the US Department of Agriculture Forest Service (USDAFS) during the 1940s through the 1960s. While the USDAFS officially adopted the grading system for their own use in 1952, it has never taken hold in the hardwood lumber industry. This article discusses the variety of reasons that have most likely contributed to this failure of adoption of the USDAFS system by the industry, ranging from ease of use, to individual log grades covering wide ranges of log characteristics/quality, and to overlapping grades for a given set of log attributes, among others. Finally, the authors suggest developing a hardwood log grading system that embraces the de facto industry system of scaling diameter and clear faces.
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