Structural performance of a novel Interlocking Glued Solid Timber system

Table 1 Comparison between the theoretical capacity to EC5 of a solid C24 cross-section with the same dimensions, and the experimentally observed capacity of the IGST series

	Series
	A	B	C	D	E
	Solid joist	Glued joist	Edge-glued	Parallel-glued	Cross-glued
Theoretical Capacity of a solid C24 cross-section (N)	14,040	14,040	38,025	76,050	76,050
Experimental capacity (N)
Joist group
1	18,693	17,494	31,273^a	85,169	96,343
2	20,388	14,286	40,065	89,693	101,771
3	20,136	19,691	45,939	90,180	91,262
4	13,510	21,463	53,270	96,057	115,456
5	24,852	19,217	46,367	94,076	105,729
Mean	19,516	18,430	43,383	91,035	102,112
CoV	0.19	0.13	0.17	0.04	0.08
Experimental IGST capacity to theoretical C24 capacity	1.39	1.31	1.14	1.20	1.34

^aOutlying values excluded from the calculation of the Mean and CoV calculations