Skip to Main Content
U.S. Forest Service
Caring for the land and serving people

United States Department of Agriculture

Home > Search > Publication Information

  1. Share via EmailShare on FacebookShare on LinkedInShare on Twitter
    Dislike this pubLike this pub
    Author(s): Ronald Wolfe; Cassandra Moseley
    Date: 2000
    Source: Forest products journal. Vol. 50, no. 10 (Oct. 2000).:p. 48-58 : ill.
    Publication Series: Miscellaneous Publication
    PDF: View PDF  (195 KB)

    Description

    Three species of small-diameter logs from the Klamath/Siskiyou Mountains and the Cascade Range in southwest Oregon were tested for their potential for value-added structural applications. The logs were tested in bending and compression parallel to the grain. Strength and stiffness values were correlated to possible nondestructive evaluation grading parameters and compared to values derived from published values based on tests of small-diameter clear wood of the test species. For the test sample, specific gravity and static bending modulus of elasticity were good indicators of strength. Growth rate, however, was poorly correlated to specific gravity, strength, and stiffness. The results suggest that the conventionally derived design values based on published small clear strength values are appropriate for bending but nonconservative for axial compressive strength. At present, established round timber specifications, modified to place limits on the presence of crown wood, would be sufficient for selection of small-diameter structural timbers. If a more tightly controlled strength limit is desirable for a specific application, static modulus of elasticity appears to be the most reliable indicator of strength of small-diameter logs.

    Publication Notes

    • We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Wolfe, Ronald.; Moseley, Cassandra. 2000. Small-diameter log evaluation for value-added structural applications. Forest products journal. Vol. 50, no. 10 (Oct. 2000).:p. 48-58 : ill.

    Keywords

    Smallwood, Logs, Value added, Structural timbers, Bending strength, Compressive strength, Specific gravity, Modulus of elasticity, Stress, Non-destructive testing

    Related Search


    XML: View XML
Show More
Show Fewer
Jump to Top of Page
https://www.fs.usda.gov/treesearch/pubs/6002