Bending strength and modulus of elasticity of Pinus sylvestris round timber from southern Norway
- 21 April 2010
- journal article
- research article
- Published by Taylor & Francis Ltd in Scandinavian Journal of Forest Research
- Vol. 25 (2), 185-195
- https://doi.org/10.1080/02827581003730757
Abstract
To enable use of round Scots pine timber in structural frameworks it is necessary to estimate the mechanical properties of the material. This paper presents data on density, bending strength and modulus of elasticity (MOE) of 533 debarked Scots pine logs with diameter from 75 mm to 250 mm sampled from 10 sites in southern Norway. The results show that round timber can have high values of bending strength and MOE, depending on the sites from which the trees have been collected. Some of the variation in bending properties can be explained by visual characteristics, but since a significant proportion of the residual variance is related to sites, criteria for visual strength grading have to be conservative to be valid across all sites. The potential for machine grading based on measuring MOE is better since this model is more accurate and the random effect of site is smaller.Keywords
This publication has 3 references indexed in Scilit:
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- Mechanical Grading of Round Timber BeamsJournal of Materials in Civil Engineering, 2006
- Principles of Wood Science and TechnologyPublished by Springer Science and Business Media LLC ,1968