Bending Strength of Webs of Cold-Formed Steel Beams

by Roger A. LaBoube, (M.ASCE), Research Engr.; Butler Manufacturing Co., Research Center, Grandview, Mo. 64030,
Wei-Wen Yu, (F.ASCE), Prof. of Civ. Engrg.; Univ. of Missouri at Rolla, Rolla, Mo. 65401,

Serial Information: Journal of the Structural Division, 1982, Vol. 108, Issue 7, Pg. 1589-1604

Document Type: Journal Paper


The postbuckling strength of web elements in bending and the interaction of beam web and flange have been studied to determine their influence on the moment capacity of beams having either stiffened or unstiffened compression flanges. Based on the test results of 68 beam specimens having stiffened compression flanges and 34 beam specimens having unstiffened compression flanges, four methods are developed for predicting the ultimate moment capacity of cold-formed steel beams with due consideration given to the actual bending strength of web elements.

Subject Headings: Cold-formed steel | Steel beams | Flanges | Compression | Bending (structural) | Flexural strength | Structural strength | Web beams

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