Skip to main content

Official Journal of the Japan Wood Research Society

Strength properties of glued laminated timber made from edge-glued laminae II: bending, tensile, and compressive strength of glued laminated timber

Abstract

The purpose of this study was to investigate the strength properties of glued laminated timber composed of edge-glued laminae and to investigate the influence of edge gluing on the strength properties. Glued laminated timber composed of multiple-grade laminae (symmetrical composition, strength grade E95-F270, 10 laminations) was produced from karamatsu (Larix kaempferi) edge-glued laminae according to the Japanese Agricultural Standard. The bending, tensile, and compressive strengths of the glued laminated timber were measured. The average bending, tensile, and compressive strengths were 33.4, 24.5, and 35.9 MPa, respectively, and these values are almost equal to those of glued laminated timber composed of karamatsu single-piece laminae. It was determined that finger-joints and knots in the edge-glued laminae played a significant role in the failure of specimens. However, the use of glued edge-joints did not appear to affect the failure of specimens.

References

  1. Shibata N, Hashizume T, Ito Y (2004) Strength properties of karamatsu (Larix kaempferi) glued laminated timber using edgeglued lumber with non-overlapping finger-joints on tensile side lamination (in Japanese). Bull Nagano Prefect Forest Res Cent 18: 103–110

    Google Scholar 

  2. Janowiak JJ, Manbeck HB, Hernandez R, Moody RC, Blankenhorn PR, Labosky P (1995) Efficient utilization of red maple lumber in glued-laminated timber beams. FPL-RP-541, US Forest Service, Forest Products Laboratory, Madison

    Google Scholar 

  3. Fujimoto K, Hiramatsu Y, Miyatake A, Shindo K, Karube M, Harada M, Ukyo S (2008) Strength properties of edge-glued karamatsu laminae. In: Proceedings of the 10th World Conference on Timber Engineering. June 2–5, 2008, Miyazaki, Japan

  4. The Ministry of Agriculture, Forestry and Fisheries of Japan (2007) Japanese agricultural standard for glued laminated timber. The Ministry, Tokyo

    Google Scholar 

  5. British Standards Institution (2003) BS EN 408:2003 Timber structures — structural timber and glued laminated timber — determination of some physical and mechanical properties. The Institution, London

    Google Scholar 

  6. Hashizume T, Yoshida T, Saito T, Ishihara S (1997) Properties of laminae from a planted Japanese larch tree, and the mechanical properties of glued laminated timber II. Grading for laminae and estimation of the strength grade for glulam (in Japanese). Mokuzai Gakkaishi 43:940–947

    CAS  Google Scholar 

  7. Hashizume T, Ito Y, Yoshida T (2009) Strength properties of mixedspecies glued laminated timber of sugi (Cryptomeria japonica) and karamatsu (Larix kaempferi) (in Japanese). Bull Nagano Prefect Forest Res Cent 23:127–140

    Google Scholar 

Download references

Author information

Authors and Affiliations

Authors

Corresponding author

Correspondence to Yasushi Hiramatsu.

Additional information

Part of this article was presented at the 25th Annual Meeting of the Wood Technological Association of Japan in Asahikawa, September 2007, and at the 10th World Conference on Timber Engineering in Miyazaki, June 2008

Rights and permissions

Reprints and permissions

About this article

Cite this article

Hiramatsu, Y., Fujimoto, K., Miyatake, A. et al. Strength properties of glued laminated timber made from edge-glued laminae II: bending, tensile, and compressive strength of glued laminated timber. J Wood Sci 57, 66–70 (2011). https://doi.org/10.1007/s10086-010-1127-0

Download citation

  • Received:

  • Accepted:

  • Published:

  • Issue Date:

  • DOI: https://doi.org/10.1007/s10086-010-1127-0

Key words