Experimental Study and Effective Width Method for Cold-Formed Steel Lipped Channel Stud Columns with Holes

Table 5

Ultimate strengths of section C7020-02 series and section C16020-05 series by using FEA and the modified EWM.

Stud columns	h	b	a	t	HL/HH	PA (kN)	PM (kN)	PM/PA
C7020-02-NH	70	30	12	2	—	149.65	140.67	0.94
C7020-02-CH3					—	143.51	139.2	0.97
C7020-02-CH5						103.98	98.78	0.95
C7020-02-CH7						85.65	78.80	0.92
C7020-02-RH2					2	145.08	139.28	0.96
C7020-02-RH4						141.58	137.33	0.97
C7020-02-RH6						97.3	95.8	0.98
C7020-02-RH2-1					1	142.35	140.23	0.99
C7020-02-RH3-1						142.10	139.2	0.98
C7020-02-RH4-1						140.78	138.9	0.99
C7020-02-RH5-1						99.53	98.78	0.99
C7020-02-RH6-1						98.87	97.2	0.98
C7020-02-RH7-1						82.36	78.80	0.96
C16020-05-NH	160	60	20	2	—	203.89	191.66	0.94
C16020-05-CH3					—	193.62	189.75	0.98
C16020-05-CH5						159.27	148.12	0.93
C16020-05-CH7						135.76	124.90	0.92
C16020-05-RH2					2	195.52	189.65	0.97
C16020-05-RH4						193.22	185.49	0.96
C16020-05-RH6						138.61	132.19	0.95
C16020-05-RH2-1					1	193.56	190.37	0.98
C16020-05-RH3-1						193.05	189.75	0.98
C16020-05-RH4-1						190.88	187.25	0.98
C16020-05-RH5-1						152.34	148.12	0.97
C16020-05-RH6-1						136.23	134.66	0.99
C16020-05-RH7-1						127.12	124.90	0.98
Average								0.9663
Standard deviation								0.0179
Coefficient of variation								0.0185