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): Leslie H. Groom
    Date: 1994
    Source: Forest Prodcuts Journal 44(1):21-29
    Publication Series: Scientific Journal (JRNL)
    PDF: Download Publication  (1.8 MB)


    The structural performance of wood trusses, which are now commonplace in light-frame construction, is dictated in part by the mechanical properties of the truss-plate joints. However, little information exists quantifying the effect of environmental conditions on truss-plate joint properties. The main objective of this paper was to quantify the effect of moisture cycling on the mechanical properties of truss-plate joints. A secondary objective was to evaluate the possibility of retarding the degenerative effects of moisture cycling by means of an adhesive applied to the teeth of the truss plate immediately before assembly. The results indicate that mild moisture cycling decreases trussplate joint strength and stiffness by approximately twice that of specimens subjected to a constant moisture content. More severe moisture cycling accelerated this decrease by a factor of about three. Addition of an adhesive to the teeth decreased plate backout and increased the mechanical properties of the truss-plate joints. The increase in initial stiffness caused by the adhesive was minimal after moisture cycling, and the improvement in ultimate load remained substantial even after eight severe moisture cycles.

    Publication Notes

    • You may send email to to request a hard copy of this publication.
    • (Please specify exactly which publication you are requesting and your mailing address.)
    • 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.


    Groom, Leslie H. 1994. Effect of moisture cycling on truss-plate joint behavior. Forest Prodcuts Journal 44(1):21-29

    Related Search

    XML: View XML
Show More
Show Fewer
Jump to Top of Page