Load sharing and weakest lamina effects on the compressive resistance of cross-laminated timber under in-plane loading

Journal of Wood Science

Official Journal of the Japan Wood Research Society

Table 3 Predicted compressive resistance of cross laminated timber (kN)

Type	Loading direction	Actual compressive resistance of CLT		Predicted compressive resistance of CLT
		Actual compressive resistance of CLT		Method 1				Method 2				Method 3
		AVE^a	5% WPE^b	AVE	Diff. ^c (%)	5% WPE	Diff. (%)	AVE	Diff. (%)	5% WPE	Diff. (%)	AVE	Diff. (%)	5% WPE	Diff. (%)
L^d-3^e-90^f	Major	234.4	198.6	315.7	34.7	250.8	26.3	315.7	34.7	250.8	26.3	291.9	24.5	209.5	5.4
L^d-3^e-90^f	Minor	118.8	101.7	123.8	4.2	82.4	− 19.0	123.8	4.2	82.4	− 19.0	123.8	4.2	82.4	− 19.0
L-5-120	Major	424.3	373.1	533.3	25.7	454.3	21.8	496.8	17.1	419.0	12.3	470.3	10.8	353.4	− 5.3
L-5-120	Minor	204.8	160.7	221.5	8.2	176.7	9.9	221.5	8.2	176.7	9.9	200.4	− 2.2	144.9	− 9.9
L-5-150	Major	620.7	511.0	733.0	18.1	634.3	24.1	665.1	7.2	577.6	13.0	646.9	4.2	514.5	0.7
L-5-150	Minor	426.6	361.1	553.3	29.7	442.3	22.5	553.3	29.7	442.3	22.5	413.2	− 3.1	310.3	− 14.1
P-3-90	Major	189.3	136.8	243.6	28.7	189.9	38.8	243.6	28.7	189.9	38.8	222.0	17.3	151.6	10.8
P-3-90	Minor	83.0	58.4	85.7	3.2	53.9	− 7.7	85.7	3.2	53.9	− 7.7	85.7	3.2	53.9	− 7.7
P-5-120	Major	322.4	235.2	402.8	24.9	337.2	43.4	372.0	15.4	306.9	30.5	350.9	8.8	255.0	8.4
P-5-120	Minor	160.7	128.4	152.3	− 5.2	118.3	− 7.8	152.3	− 5.2	118.3	− 7.8	138.8	− 13.6	97.0	− 24.5
P-5-150	Major	484.8	414.6	551.4	13.7	470.9	13.6	494.7	2.0	425.0	2.5	485.4	0.1	378.4	− 8.7
P-5-150	Minor	301.7	228.6	285.8	− 5.3	231.0	1.1	285.8	− 5.3	231.0	1.1	259.3	− 14.1	192.4	− 15.8

^aAverage value
^bLower 5th percentile point estimate using Weibull distribution fit
^cDifference between prediction and measured value: (predicted value−measured value)/measured value
^dSpecies; L larch, P pine
^eThe number of layers
^fThickness of cross-laminated timber (mm)