Which one of the following is NOT a parameter for determining the strength of the column ?
- AMaterial of the column
- BCross-sectional configuration
- CWidth of the columnCorrect
- DResidual stress
Solution
Concept
Parameters of column strength
Step-by-step solution
1. Column strength depends on the material (yield stress), the cross-section (radius of gyration), slenderness, end conditions, residual stress and initial crookedness. 2. The width of the section alone is not a governing parameter.
Explanation
The strength is governed by slenderness and section properties together, not by one dimension such as the width.
Why the other options are wrong
Material, cross-sectional shape and residual stresses all affect the column curve.
Shortcut
Column strength = f(material, slenderness, section, residual stress).
Correct answer: C) Width of the column