Table 6.

Axial load carrying capacity comparison of plain webs ⁴², unstiffened slotted webs, and edge-stiffened slotted webs.

Specimen	plain webs	Un-stiffened holes			Edge-stiffened holes
	PEXP	PFEM	PFEM/PEXP	Strength changes due to holes	PFEM	PFEM/PEXP	Strength changes due to holes
	kN	kN	–	%	kN	–	%
BU45-7-1	124	108	0.87	− 12.7	119	0.96	− 3.7
BU45-7-2	123	115	0.93	− 6.6	131	1.07	6.5
BU45-7-3	121	112	0.92	− 7.9	124	1.02	2.4
BU90-3-1	119	105	0.88	− 11.7	118	0.99	− 0.6
BU90-3-2	119	106	0.89	− 11.5	118	0.99	− 0.8
BU90-3-3	118	114	0.96	− 3.8	127	1.08	7.5
BU105-2-1	117	109	0.93	− 7.4	119	1.01	1.5
BU105-2-2	117	111	0.94	− 5.9	120	1.03	2.5
BU105-2-3	117	105	0.89	− 10.9	115	0.98	− 2.4
BU60-7-1	123	109	0.89	− 11.3	123	1.00	0.4
BU60-7-2	122	118	0.96	− 3.7	117	0.96	− 3.9
BU60-7-3	121	108	0.89	− 11.3	117	0.96	− 3.6
BU110-3-1	117	107	0.91	− 9.1	112	0.95	− 4.7
BU110-3-2	118	106	0.90	− 9.8	117	0.99	− 0.6
BU110-3-3	119	111	0.93	− 6.8	116	0.98	− 2.0
BU60-3-1	116	108	0.92	− 7.6	116	0.99	− 0.7
BU60-3-2	117	114	0.98	− 1.8	117	1.01	0.6
BU60-3-3	116	106	0.92	− 8.2	115	1.00	− 0.1
Average			0.92	− 8.22		1.00	− 0.10
S			0.03	0.03		0.03	0.03