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