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

Autor: Bayasaa Tumenjargal, Futoshi Ishiguri, Yusuke Takahashi, Ikumi Nezu, Bayartsetseg Baasan, Ganbaatar Chultem, Haruna Aiso-Sanada, Jyunichi Ohshima, Shinso Yokota
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Journal of Wood Science, Vol 66, Iss 1, Pp 1-8 (2020)
Druh dokumentu: article
ISSN: 1435-0211
1611-4663
DOI: 10.1186/s10086-020-01863-6
Popis: Abstract 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.
Databáze: Directory of Open Access Journals
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