Experimental Investigation and Load Capacity of Slender Cold-Formed Lipped Channel Sections with Holes in Compression

Table 1

Nominal and measured section dimensions of specimens.

Specimen	Nominal section dimensions					Measured section dimensions						Maximum of initial geometric imperfections
	h (mm)	b (mm)	a (mm)	t (mm)	Slenderness ratio	L (mm)	h1 (mm)	b1 (mm)	b2 (mm)	a1 (mm)	a2 (mm)	Δmax (mm)
C7508-CH3-1	75	40	10	0.8	89.91	2000.00	74.73	38.51	40.35	9.75	8.87	0.927
C7508-CH3-2						2000.00	73.94	39.81	39.34	9.65	9.72	1.062
C7508-CH5-1						1999.95	74.66	38.95	38.93	10.31	9.69	0.823
C7508-CH5-2						2000.00	73.78	39.63	39.73	9.57	10.06	1.326
C7508-CH7-1						1999.60	74.01	39.58	39.58	9.56	9.84	1.856
C7508-CH7-2						1999.70	73.92	38.95	39.83	10.22	9.64	0.902
C7510-NH-1	75	40	10	1	90.55	2000.00	75.05	39.97	39.84	9.98	9.84	0.812
C7510-NH-2						2000.10	75.13	39.95	40.00	9.85	9.98	1.856
C7510-RH2-1						2001.25	74.51	39.50	39.69	9.39	9.92	0.925
C7510-RH2-2						2001.15	73.97	39.24	38.91	10.00	10.50	0.756
C7510-RH4-1						2001.20	73.70	40.09	39.47	9.52	9.93	1.012
C7510-RH4-2						2001.10	74.04	39.45	39.41	9.70	10.04	1.201
C7510-RH6-1						2001.25	73.91	39.35	39.68	9.83	9.86	0.856
C7510-RH6-2						2001.15	74.10	38.83	39.83	9.90	9.44	0.914
C9008-NH-1	90	50	15	0.8	72.38	2000.05	89.96	49.69	49.67	14.83	14.95	1.302
C9008-NH-2						1999.85	89.91	50.02	50.04	14.86	14.84	1.202
C9008-CH3-1						1999.25	89.82	48.95	50.13	14.21	14.45	0.852
C9008-CH3-2						1999.25	89.85	48.18	49.27	15.48	14.58	0.962
C9008-CH5-1						1999.55	88.25	49.65	50.81	14.09	14.71	0.861
C9008-CH5-2						1999.50	89.97	50.26	49.52	14.02	14.53	0.934
C9008-CH7-1						1999.58	89.99	50.26	49.52	14.02	14.53	1.023
C9008-CH7-2						1999.62	89.97	50.26	49.52	14.02	14.53	0.954
C9008-RH2-1						1999.60	89.96	49.79	49.60	13.96	14.84	0.895
C9008-RH2-2						1999.70	89.26	49.65	49.93	14.29	15.33	0.697
C9008-RH4-1						1999.95	89.07	48.45	49.08	15.57	14.52	1.203
C9008-RH4-2						2000.05	89.58	49.76	48.86	14.60	14.70	1.322
C9008-RH6-1						1999.80	90.01	49.35	49.29	14.71	14.77	0.891
C9008-RH6-2						1999.85	89.95	49.57	49.38	15.04	14.78	1.849
C8008-NH-1	80	60	10	0.8	82.00	2000.05	80.02	59	59.04	9.84	9.86	2.467
C8008-NH-2						1999.8	79.89	60.03	60.07	9.6	9.58	1.312
C8008-CH3-1						1999.7	79.88	59.62	60.27	8.88	9.11	1.512
C8008-CH3-2						1999.85	79.14	60.58	59.84	9.62	8.49	0.912
C8008-CH5-1						2000.05	80.22	59.10	59.41	10.01	9.32	1.325
C8008-CH5-2						1999.9	79.66	59.34	59.46	9.87	9.40	0.816
C8008-CH7-1						2000	79.90	58.71	59.28	9.75	9.81	0.988
C8008-CH7-2						2000.05	80.43	58.70	59.01	10.07	9.70	1.324
C8008-RH2-1						2000.10	79.29	59.33	59.40	9.74	9.92	1.624
C8008-RH2-2						2000.15	79.48	59.02	59.86	10.22	9.16	1.214
C8008-RH4-1						1999.95	80.24	59.80	58.75	9.61	9.22	1.212
C8008-RH4-2						2000.00	80.51	58.67	59.10	10.02	9.39	0.897
C8008-RH6-1						1999.90	78.25	59.10	59.02	10.92	9.80	1.245
C8008-RH6-1						2000.00	79.80	59.48	59.26	9.09	9.30	1.311