Effect of size on the bending strength of laminated veneer lumber
- 205 Downloads
The effect of size on bending strength has been experimentally determined for laminated veneer lumber. Width was found to have no effect on bending strength. The effect of depth times length on bending strength obtained by the slope method was about 0.075, which is in good agreement with the results obtained by the shape parameter method. The effect of length is somewhat more severe than the effect of depth. Size was found to have no effect on modulus of elasticity or modulus of rigidity.
In addition, the relationships between bending strength, modulus of elasticity and density of laminated veneer lumber were experimentally modelled.
KeywordsShape Parameter Parameter Method Time Length Depth Time Laminate Veneer Lumber
Unable to display preview. Download preview PDF.
- Barrett, J. D.; Griffin, H. 1989: Size effects for Canadian dimension lumber. Proceedings of the CIB-W18A meeting 1989, Berlin, paper no 22-6-1Google Scholar
- Barrett, J. D. 1974: Effect of size on tension perpendicular-to-grain strength of Douglas-fir. Wood and Fiber 6(2): 126–143Google Scholar
- Bohannan, B. 1968: Structural engineering research in wood. Journal of the Structural Division 94(2): 403–416Google Scholar
- EN 408 1995: Timber structures — Structural timber and glued laminated timber — Determination of some physical and mechanical properties. European Committee for StandardizationGoogle Scholar
- Hayashi, T.;Oshiumi, S. 1993: Bending strength distribution of laminated-veneer-lumber for structural use. Journal of the Japan Wood Research Society 39(9): 985–992 (in Japanese)Google Scholar
- Madsen, B. 1992: Structural behaviour of timber. pp 242. North Vancouver, British Columbia, Canada: Timber Engineering LtdGoogle Scholar
- Madsen, B. 1990a: Length effects in 38 mm spruce-pine-fir dimension lumber. Canadian Journal of Civil Engineering 17(2): 226–237Google Scholar
- Madsen, B. 1990b: Size effects in defect-free Douglas fir. Canadian Journal of Civil Engineering 17(2): 238–242Google Scholar
- Madsen, B.;Buchanan, A. H. 1986: Size effects in timber explained by a modified weakest link theory. Canadian Journal of Civil Engineering 13(2): 218–232Google Scholar
- Sharp, D. J.;Suddarth, S. K. 1991: Volumetric effects in structural composite lumber. Proceedings of the 1991 International Timber Engineering Conference, London 3: 427–437Google Scholar