Physics · Design of Steel Structures
Which one of the following is NOT correct regarding the behavior of beam-columns subjected to bending moment about the minor axis compared to the major axis?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1The failure of short/stocky members is either due to section strength being reached at the ends or at the section of larger magnified moment
- 2As the slenderness decreases, the failure curves change from convex to concave, showing decreasing dominance of minor axis buckling✓
- 3The moment magnification is larger in the case of beam-columns bending about their weak axis
- 4In slender members under small axial load, there is very little reduction of moment capacity below Mp, since lateral torsional buckling is not a problem in weak axis bending
Correct answer
As the slenderness decreases, the failure curves change from convex to concave, showing decreasing dominance of minor axis buckling
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