Experimental Study and Direct Strength Method for Cold-Formed Steel Built-Up I-Sectional Columns under Axial Compression

Table 5

Section matrix of CFS built-up columns in FEA and maximum percent ratio of decreasing of load capacity.

Section series	h (mm)	b (mm)	a (mm)	t (mm)	fy (MPa)	Slenderness ratio	Maximum percent ratio of decreasing of load capacity (%)
DC7510	75	40	8	1	550	12.15∼150.12	76.72
DC10010	100	51	12	1	550	9.88∼118.58	58.74
DC10075	100	51	12	0.75	550	9.88∼118.58	50.11
DC7012	69	35	11.3	1.2	350	13.89∼166.64	76.9
DC14008	140	50	10.3	0.8	350	11.24∼134.88	48.26
DC14012	140	50	11.3	1.2	350	11.24∼134.88	43.88
DC8910	89	41	13	1	280	11.71∼140.60	58.77
DC14010	140	41	13	1	280	13.14∼157.74	58.89