Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 3 Stress reduction factor for GLT beams composed of heterogeneous grade [4]

From: Study on the strength of glued laminated timber beams with round holes: proposal of the design formula for the splitting strength

Strength grade	k_M,comp	k_Q,comp
E170-F495	0.72	0.95
E150-F435	0.71	0.95
E135-F375	0.73	0.95
E120-F330	0.74	0.95
E105-F300	0.74	0.95
E95-F270	0.72	0.95
E85-F255	0.69	0.94
E75-F240	0.65	0.94
E65-F225	0.60	0.93
E55-F200	0.53	0.91

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