Experimental Study and Proposal to Improve the EWM Design of Cold-Formed Steel Lipped Channel Columns with Circular Holes under Axial Compression

Figure 6

Initial geometric imperfections of specimens. (a)Specimen C80-05-1H3-1. (b)Specimen C80-10-1H3-1. (c)Specimen C80-20-3H3-1.

(a)

(b)

(c)