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Title: Lam I-joists : a new structural building product from small-diameter, fire-prone timber

Author: Hunt, John F.; Winandy, Jerrold E.;

Date: 2003

Source: Res. Note FPL-RN-0291. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 5 pages

Publication Series: Research Note (RN)

Description: The goal of our research is to promote healthy and sustainable forests by developing value-added uses for curved and small-diameter trees. In typical North American logging or thinning operations, much of this low- value timber is felled and left on the ground, chipped, or burned because most mills are not equipped to handle it. By understanding the fundamental processing requirements for and the mechanical properties of curved and small-diameter material, we can gain insight into possible options for using this resource. Through cooperative efforts with industry, universities, and government institutions, we are working to use innovative technologies to investigate the potential for using an additional 8.5 to 17 million board feet per year of fire-prone woody fuel per forest unit for value-added products. In the study reported here, research was focused on processing small-diameter curved and cull timber into dimensional 2 by 4 studs and then converting that material into a value-added laminated I-beam, called LamLumber. This paper describes research to date on processing needs and basic research being conducted on small-diameter timber.

Keywords: Laminated lumber, I-beam, small diameter

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.

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Hunt, John F.; Winandy, Jerrold E. 2003. Lam I-joists : a new structural building product from small-diameter, fire-prone timber. Res. Note FPL-RN-0291. Madison, WI: U.S. Department of Agriculture, Forest Service, Forest Products Laboratory: 5 pages

 


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