Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia
Abstract The quality of dimension lumber (2 by 4 lumber) was preliminarily investigated in four common Mongolian softwoods: Pinus sylvestris L., Pinus sibirica Du Tour, Picea obovata Ledeb., and Larix sibirica Ledeb. to produce high quality dimension lumber for structural use. In total 61, 39, 67, a...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-10-01
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| Series: | Journal of Wood Science |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s10086-020-01919-7 |
| _version_ | 1818885108561608704 |
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| author | Murzabyek Sarkhad Futoshi Ishiguri Ikumi Nezu Bayasaa Tumenjargal Yusuke Takahashi Bayartsetseg Baasan Ganbaatar Chultem Jyunichi Ohshima Shinso Yokota |
| author_facet | Murzabyek Sarkhad Futoshi Ishiguri Ikumi Nezu Bayasaa Tumenjargal Yusuke Takahashi Bayartsetseg Baasan Ganbaatar Chultem Jyunichi Ohshima Shinso Yokota |
| author_sort | Murzabyek Sarkhad |
| collection | DOAJ |
| description | Abstract The quality of dimension lumber (2 by 4 lumber) was preliminarily investigated in four common Mongolian softwoods: Pinus sylvestris L., Pinus sibirica Du Tour, Picea obovata Ledeb., and Larix sibirica Ledeb. to produce high quality dimension lumber for structural use. In total 61, 39, 67, and 37 pieces of lumber were prepared for Pinus sylvestris, Pinus sibirica, Picea obovata, and L. sibirica, respectively. The lumber was visually graded and then tested in static bending to obtain the 5% lower tolerance limits at 75% confidence level (f 0.05) of the modulus of elasticity (MOE) and the modulus of rupture (MOR). In addition, the effects of sawing patterns on bending properties were also analyzed. The f 0.05 of the MOE and MOR were 4.75 GPa and 15.6 MPa, 3.39 GPa and 11.0 MPa, 3.78 GPa and 11.7 MPa, and 6.07 GPa and 22.3 MPa for Pinus sylvestris, Pinus sibirica, Picea obovata, and L. sibirica, respectively. These results suggested that with a few exceptions, characteristic values of MOR in the four common Mongolian softwoods resembled those in similar commercial species already used. In visual grading, over 80% of total lumber was assigned to select structural and No. 1 grades in Pinus sylvestris and Pinus sibirica, whereas approximately 40% of total lumber in L. sibirica was No. 3 and out of grades. Sawing patterns affected bending properties in Pinus sylvestris and L. sibirica, but did not affect Pinus sibirica and Picea obovata. Dynamic Young's modulus was significantly correlated with bending properties of dimension lumber for the four species. Based on the results, it was concluded that dimension lumber for structural use can be produced from the four common Mongolian softwoods. |
| first_indexed | 2024-12-19T16:00:12Z |
| format | Article |
| id | doaj.art-bfa078e88d11439981df0c1bb9c25254 |
| institution | Directory Open Access Journal |
| issn | 1435-0211 1611-4663 |
| language | English |
| last_indexed | 2024-12-19T16:00:12Z |
| publishDate | 2020-10-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of Wood Science |
| spelling | doaj.art-bfa078e88d11439981df0c1bb9c252542022-12-21T20:14:58ZengSpringerOpenJournal of Wood Science1435-02111611-46632020-10-0166111210.1186/s10086-020-01919-7Preliminary evaluation for quality of dimension lumber in four common softwoods in MongoliaMurzabyek Sarkhad0Futoshi Ishiguri1Ikumi Nezu2Bayasaa Tumenjargal3Yusuke Takahashi4Bayartsetseg Baasan5Ganbaatar Chultem6Jyunichi Ohshima7Shinso Yokota8School of Agriculture, Utsunomiya UniversitySchool of Agriculture, Utsunomiya UniversitySchool of Agriculture, Utsunomiya UniversitySchool of Agriculture, Utsunomiya UniversitySchool of Agriculture, Utsunomiya UniversityTraining and Research Institute of Forestry and Wood Industry, Mongolian University of Science and TechnologySchool of Industrial Technology, Mongolian University of Science and TechnologySchool of Agriculture, Utsunomiya UniversitySchool of Agriculture, Utsunomiya UniversityAbstract The quality of dimension lumber (2 by 4 lumber) was preliminarily investigated in four common Mongolian softwoods: Pinus sylvestris L., Pinus sibirica Du Tour, Picea obovata Ledeb., and Larix sibirica Ledeb. to produce high quality dimension lumber for structural use. In total 61, 39, 67, and 37 pieces of lumber were prepared for Pinus sylvestris, Pinus sibirica, Picea obovata, and L. sibirica, respectively. The lumber was visually graded and then tested in static bending to obtain the 5% lower tolerance limits at 75% confidence level (f 0.05) of the modulus of elasticity (MOE) and the modulus of rupture (MOR). In addition, the effects of sawing patterns on bending properties were also analyzed. The f 0.05 of the MOE and MOR were 4.75 GPa and 15.6 MPa, 3.39 GPa and 11.0 MPa, 3.78 GPa and 11.7 MPa, and 6.07 GPa and 22.3 MPa for Pinus sylvestris, Pinus sibirica, Picea obovata, and L. sibirica, respectively. These results suggested that with a few exceptions, characteristic values of MOR in the four common Mongolian softwoods resembled those in similar commercial species already used. In visual grading, over 80% of total lumber was assigned to select structural and No. 1 grades in Pinus sylvestris and Pinus sibirica, whereas approximately 40% of total lumber in L. sibirica was No. 3 and out of grades. Sawing patterns affected bending properties in Pinus sylvestris and L. sibirica, but did not affect Pinus sibirica and Picea obovata. Dynamic Young's modulus was significantly correlated with bending properties of dimension lumber for the four species. Based on the results, it was concluded that dimension lumber for structural use can be produced from the four common Mongolian softwoods.http://link.springer.com/article/10.1186/s10086-020-01919-7Pinus sylvestrisPinus sibiricaPicea obovataLarix sibiricaModulus of elasticityModulus of rupture |
| spellingShingle | Murzabyek Sarkhad Futoshi Ishiguri Ikumi Nezu Bayasaa Tumenjargal Yusuke Takahashi Bayartsetseg Baasan Ganbaatar Chultem Jyunichi Ohshima Shinso Yokota Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia Journal of Wood Science Pinus sylvestris Pinus sibirica Picea obovata Larix sibirica Modulus of elasticity Modulus of rupture |
| title | Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia |
| title_full | Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia |
| title_fullStr | Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia |
| title_full_unstemmed | Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia |
| title_short | Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia |
| title_sort | preliminary evaluation for quality of dimension lumber in four common softwoods in mongolia |
| topic | Pinus sylvestris Pinus sibirica Picea obovata Larix sibirica Modulus of elasticity Modulus of rupture |
| url | http://link.springer.com/article/10.1186/s10086-020-01919-7 |
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