Table 1. Information of specimens

Mechanical test	Size of specimens	No. of specimens	No. of repetition
Nail withdrawal	50 mm × 50 mm × 150 mm	6 (PSF); 6 (PSM)	1 (some are repeated)
Compression	20 mm × 20 mm × 30 mm	5 (PSF); 5 (PSM)	2
Bending	20 mm × 20 mm × 300 mm	5 (PSF); 5 (PSM)	2

PSM: Pinus sylvestris var. mongoliaca.