Cross section distortion due to cutting of cold-formed steel lipped C-section

X. P. Wang, Siu Shu Eddie Lam, Kwok Fai Chung

Research output: Journal article publicationJournal articleAcademic researchpeer-review

14 Citations (Scopus)


The process of cutting a roll-formed steel section to specified length may lead to cross section distortion and may cause initial geometric imperfection. Two roll-formed steel lipped C-sections of grade G450 were cut to stub columns using an electric saw. Cross section distortions of cut segments and stub columns were measured using a vernier caliper. Initial geometric imperfections of the cut stub columns along the longitudinal direction were estimated using a laser transducer. When a roll-formed steel lipped C-section is cut into two segments, there will be cross section distortions in the vicinity of the cut. For a cut stub column, variation of imperfection along the longitudinal direction at the flanges can be represented by a half-sine wave. The initial geometric imperfection of a cut stub column attains maximum values at the flanges, and is insignificant at the corners where the web and the flanges intersect.
Original languageEnglish
Pages (from-to)271-280
Number of pages10
JournalThin-Walled Structures
Issue number3
Publication statusPublished - 1 Mar 2006


  • Cold-formed steel
  • Cut stub column
  • Distortion
  • Initial imperfection
  • Lipped C-section

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Mechanical Engineering


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