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Official Journal of the Japan Wood Research Society

Journal of Wood Science Cover Image

Table 4 Mean values and standard deviations of the air-dry density and bending properties of lumber in each visual grade

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

GradenAD (g/cm3)MOE (GPa)MOR (MPa)
MeanSDMeanSDMeanSD
SS1080.60a0.0510.08a2.4352.8a21.9
No. 1120.63a0.0610.90a2.1654.2ab19.8
No. 2190.61a0.0510.37a2.5652.1ab21.1
No. 3200.60a0.0410.07ab2.3548.8ab14.4
Out grading310.60a0.048.38b2.0040.2b14.9
  1. The same letters (a and b) followed by mean values indicate no significance at the 5% level according to the Tukey–HSD test
  2. n number of lumber pieces, AD air-dry density, MOE modulus of elasticity, MOR modulus of rupture, SD standard deviation, SS select structural