Radial variation in partial compression properties perpendicular to the grain of Japanese larch (Larix kaempferi)

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 2 Results of density, ARW, moisture content, and partial compression stress at 5 % strain perpendicular to the grain of air-dried wood samples

Log no.	Loading direction	n	Density (g/cm³)		ARW (mm)		MC (%)		σ _5% (N/mm²)
Log no.	Loading direction	n	Average	SD	Average	SD	Average	SD	Average	SD
S1	T	15	0.45	0.04	3.46	1.01	11.58	0.24	8.63	1.41
S1	R	14	0.45	0.04	3.59	0.94	11.66	0.27	7.58	1.37
S2	T	16	0.53	0.07	3.13	1.25	12.14	0.23	10.70	1.54
S2	R	15	0.52	0.06	3.20	1.02	12.15	0.49	7.60	0.71
S3	T	17	0.46	0.06	4.45	1.55	11.75	0.22	8.07	1.74
S3	R	17	0.45	0.07	4.23	1.28	11.73	0.46	7.05	0.82
M1	T	24	0.50	0.07	5.34	2.31	11.91	0.34	11.19	2.45
M1	R	24	0.50	0.07	5.02	2.54	11.78	0.33	9.29	2.15
M2	T	26	0.51	0.08	4.47	2.26	12.27	0.33	10.73	2.59
M2	R	26	0.50	0.08	4.37	2.14	12.17	0.29	8.80	1.32
M3	T	27	0.51	0.08	4.43	2.24	12.40	0.70	10.24	2.55
M3	R	26	0.52	0.07	4.64	2.38	12.60	0.52	8.99	1.48
L1	T	40	0.51	0.05	5.62	2.10	12.46	0.58	11.49	2.16
L1	R	41	0.50	0.05	5.71	2.33	12.15	0.44	9.23	1.35
L2	T	45	0.51	0.05	5.81	1.82	12.88	0.32	9.99	2.14
L2	R	45	0.51	0.05	5.75	1.92	12.76	0.31	8.67	1.38
L3	T	45	0.46	0.04	6.00	2.11	11.68	0.93	9.35	1.90
L3	R	44	0.46	0.04	5.70	2.28	11.79	0.79	8.44	2.04

n number of specimens, Density air-dried wood density, ARW average width of annual rings, MC moisture content, σ _5% partial compression stress at 5 % strain perpendicular to the grain, T tangential direction, R radial direction