Experimental Investigation on Embedding Strength Perpendicular to Grain of Parallel Strand Bamboo

Table 1

Tested result.

Specimen group	Number	Diameter of bolt (mm)	①	②	③	④	⑤	⑥	⑦	⑧
								H1	8	12	80.84	5.88	72.16	68.42	133.26	1.12	1.18	1.65
H2	8	14	77.40	8.42	68.61	63.34	114.30	1.13	1.22	1.48
H3	8	16	76.52	10.63	65.25	59.26	105.35	1.17	1.29	1.38
H4	8	20	74.20	12.20	59.04	53.00	99.32	1.26	1.40	1.34
H5	8	24	67.01	13.34	53.42	48.38	84.54	1.25	1.39	1.26

Note. ① is the average value of yielding strength based on the 5% bolt diameter offset method (MPa). ② is the variable coefficient of tested yielding strength (%). ③ is the calculating value of formula in BS EN 1995 (MPa). ④ is the calculating value of formula in NDS-2015 (MPa). ⑤ is the average value of ultimate tested strength (MPa).