A hardwood Log Grading Handbook

Contents
How Much Is a Log Worth?……………………………………1
Veneer, Sawlogs and Other Log Classes ……………..2
Log Scaling ……………………………………………………….3
Table 1. The Doyle Log Rule…………………………………4
Log Grading — Relation to Lumber Grading………..6
Table 2. Summary of the NHLA hardwood
lumber grading rules ……………………………………..7
Log Grading Methods ………………………………………….8
Defects ……………………………………………………………..8
USDA Forest Service Hardwood Sawlog
Grading System……………………………………………11
Table 3. Summary of Forest Service
Hardwood Log Grading Rule…………………………12
Table 4. Total cutting lengths required
in each grade ……………………………………………..15
Table 5. Sweep deduction (percent) …………………16
Grading a Log Using the Forest Service System ….17
Table 6. Scaling deduction factors…………………….18
Clear Face Grading …………………………………………19
The Log Grading Rules Compared……………………..20
The US Forest Service Log Grading Rule……………..20
Clear Face Rules ……………………………………………..20
Weight Scaling…………………………………………………20
Tree Grading………………………………………………………21
Table 7. Summary of US Forest Service Rule
for Tree Grading……………………………………………21
Log Bucking Optimization ………………………………….22
Summary……………………………………………………………24
References…………………………………………………………25

oRIGINAL https://extension.tennessee.edu/publications/Documents/PB1772.pdf

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