Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 3 Mean values, standard deviations, and 5% lower tolerance limits of each grade

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

Grade	n	MOE (GPa)			MOR (MPa)
Grade	n	Mean	SD	TL_75%,95%	Mean	SD	TL_75%,95%
SS	108	10.08	2.43	5.83	52.8	21.9	14.4
SS + No. 1	120	10.17	2.41	5.96	52.9	21.6	15.1
SS + No. 1 + No. 2	139	10.19	2.42	5.99	52.8	21.5	15.4
SS + No. 1 + No. 2 + No. 3	159	10.18	2.40	6.01	52.3	20.7	16.4

n number of lumber, MOE modulus of elasticity, MOR modulus of rupture, SD standard deviation, SS select structural, TL_75%,95%, 5% lower limit with a 75% confidence level (5% tolerance limit)

Back to article page