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

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 6 Mean values and standard deviations of lumber properties in each sawing pattern

Lumber type	n	ARW (mm)		AD (g/cm³)		MOE (GPa)		MOR (MPa)
Lumber type	n	Mean	SD	Mean	SD	Mean	SD	Mean	SD
I	57	2.1^a	1.1	0.59^a	0.05	9.28^a	2.21	43.2^a	12.5
II	104	2.0^a	1.1	0.60^a	0.04	10.15^a	2.36	52.3^b	21.4
III	29	1.9^a	1.2	0.65^b	0.04	10.14^a	2.92	57.4^b	25.2

The same letters (a and b) followed by mean values indicate no significance at the 5% level according to the Tukey–HSD test. The values of the MOE and MOR were adjusted to the values at 15% moisture content
n number of lumber pieces, ARW annual ring width, AD air-dry density at testing, MOE modulus of elasticity, MOR modulus of rupture, SD standard deviation, I lumber including pith at an almost-center position in cross-section, II lumber obtained near the pith (sometimes including pith on the surface area of the lumber), III lumber obtained from outer part of the logs (without pith)