Table 5. Average hardness of laminated bamboo at different culm position and lamination direction (kgf/cm²)

Lamination direction	Culm position			Average
	Lower	Middle	Upper
Vertical	986.87 (100.39)	1,284.13 (132.54)	1,422.80 (266.53)	1,231.27 (166.48)
Horizontal	625.53 ( 86.71)	1,019.11 ( 76.21)	939.12 (105.70)	861.25 ( 89.54)
Average	806.20 ( 93.55)	1,151.62 (104.375)	1,180.96 (186.115)	1,046.26 (128.01)

Numbers in parentheses are SD.