Official Journal of the Japan Wood Research Society
Table 2 Statistical values of lumber properties
From: Preliminary evaluation for quality of dimension lumber in four common softwoods in Mongolia
Property | Pinus sylvestris (n = 61) | Pinus sibirica (n = 39) | Picea obovata (n = 67) | L. sibirica (n = 37) |
|---|---|---|---|---|
ARW (mm) | 1.6 ± 0.5 | 2.2 ± 0.5 | 2.5 ± 0.6 | 2.4 ± 0.6 |
(1.0–3.4) | (1.4–3.3) | (0.2–3.5) | (1.0–3.6) | |
Crook (%) | 0.06 ± 0.04 | 0.10 ± 0.09 | 0.08 ± 0.06 | 0.08 ± 0.06 |
(0.00–0.16) | (0.00–0.49) | (0.00–0.27) | (0.00–0.27) | |
Bow (%) | 0.03 ± 0.03 | 0.05 ± 0.07 | 0.06 ± 0.06 | 0.07 ± 0.07 |
(0.00–0.16) | (0.00–0.36) | (0.00–0.30) | (0.00–0.27) | |
Twist (degree) | 0.5 ± 0.0 | 0.3 ± 0.7 | 2.4 ± 2.7 | 3.5 ± 4.5 |
(0.0–2.2) | (0.0–3.3) | (0.0–11.1) | (0.0–17.7) | |
AD (g/cm3) | 0.44 ± 0.03 | 0.43 ± 0.03 | 0.39 ± 0.02 | 0.59 ± 0.07 |
(0.40–0.50) | (0.38–0.50) | (0.36–0.48) | (0.45–0.75) | |
DMOE (GPa) | 10.55 ± 1.57 | 8.16 ± 1.57 | 8.55 ± 1.17 | 13.11 ± 2.21 |
(6.22–13.95) | (5.59–12.04) | (4.54–11.80) | (9.13–18.71) | |
MOE (GPa) | 6.56 ± 1.01 | 5.10 ± 0.93 | 5.32 ± 0.86 | 8.52 ± 1.33 |
(3.47–8.41) | (3.44–6.86) | (3.22–7.30) | (6.48- 11.95) | |
MOR (MPa) | 38.6 ± 12.8 | 25.0 ± 7.6 | 26.7 ± 8.4 | 44.5 ± 16.4 |
(14.4–68.4) | (11.2–40.5) | (9.7–49.1) | (18.0–95.2) | |
MOE f0.05 (GPa) | 4.75 | 3.39 | 3.78 | 6.07 |
MOR f0.05 (MPa) | 15.6 | 11.0 | 11.7 | 22.3 |