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    Author(s): Henry Spelter
    Date: 2003
    Source: Res. Pap. FPL-611. Madison, WI : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003. 8 pages.
    Publication Series: Research Paper (RP)
    Station: Forest Products Laboratory
    PDF: View PDF  (614 KB)

    Description

    The traditional method of measuring log volume in North America is the board foot log scale, which uses simple assumptions about how much of a log's volume is recoverable. This underestimates the true recovery potential and leads to difficulties in comparing volumes measured with the traditional board foot system and those measured with the cubic scaling systems used in most of the world. The relationships among these different scaling systems vary systematically with log diameter, as well as length, taper, defects, and measurement and utilization conventions. As average log size has declined in North America due to the replacement of virgin wood by plantation-grown timber, the discrepancies have become larger. This article deals with the factors that affect the translation of traditional board foot log volumes to cubic volume and weight equivalents.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Spelter, Henry. 2003. Challenges in converting among log scaling methods. Res. Pap. FPL-611. Madison, WI : U.S. Dept. of Agriculture, Forest Service, Forest Products Laboratory, 2003. 8 pages.

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    Keywords

    Log rules, conversion factors, board feet, cubic volume.

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