Bending properties of dimension lumber produced from Siberian larch (Larix sibirica) in Mongolia

The modulus of elasticity (MOE) and modulus of rupture (MOR) were evaluated for 190 pieces of dimension lumber (2 by 4 lumber, 38 by 89 mm in cross-section) produced from Larix sibirica trees grown in Mongolia. The 5% tolerance limits of the MOE and MOR were 5.70 GPa and 15.1 MPa, respectively. The...

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Veröffentlicht in:Journal of wood science 2020-12, Vol.66 (1), p.1-8, Article 17
Hauptverfasser: Tumenjargal, Bayasaa, Ishiguri, Futoshi, Takahashi, Yusuke, Nezu, Ikumi, Baasan, Bayartsetseg, Chultem, Ganbaatar, Aiso-Sanada, Haruna, Ohshima, Jyunichi, Yokota, Shinso
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Sprache:eng
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Zusammenfassung:The modulus of elasticity (MOE) and modulus of rupture (MOR) were evaluated for 190 pieces of dimension lumber (2 by 4 lumber, 38 by 89 mm in cross-section) produced from Larix sibirica trees grown in Mongolia. The 5% tolerance limits of the MOE and MOR were 5.70 GPa and 15.1 MPa, respectively. The value of the 5% tolerance limit of the MOR exceeded the characteristic value of 2 by 4 lumber in visual grading class No. 3 of the Japanese Agricultural Standard for the D. fir-L, Hem-Tam, JS-III and S-P-F softwood species groups. A significant positive correlation was found between the MOE and MOR, although air-dry density was weakly correlated with bending properties in L. sibirica .
ISSN:1435-0211
1611-4663
DOI:10.1186/s10086-020-01863-6