Effect of the Nonprestressed/Prestressed BFRP Bar on Flexural Performance of the Bamboo Beam

Table 4

Positions of neutral axis under different loads in the first series.

Load (kN)	A0		A1
	hl (mm)	hl/h	hl (mm)	hl/h
2	32.70	0.545	22.14	0.369
4	32.22	0.537	23.04	0.384
6	31.26	0.521	23.22	0.387
8	29.64	0.494	21.78	0.363
10	28.08	0.468	18.24	0.304

Note: h_l is the distance between the neutral axis and the bottom surface of the bamboo beam; h is the beam height.