Hardwood Log Grades and Lumber Grade Yields for Factory Lumber Logs

摘要

The USDA Forest Service Standard Grades for Hardwood Factory Lumber Logs are described. Lumber grade yields for 16 species and 2 species groups are presented by log grade and log diameter. The grades enable foresters, log buyers, and log sellers to select and grade those logs suitable for conversion into standard factory grade lumber. By using the appropriate lumber grade yields, log buyers and sellers can appraise the logs in terms of expected lumber grade volume and value.