The strength of compression members subjected to axial compression is defined by curves
corresponding to _______ classes.
-
A.
e, f, g
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B.
b, e, f
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C.
a, b, c and d
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D.
a, d
Correct Answer:
C. a, b, c and d
Explanation:
The axial compressive strength of a structural member is determined by multiple non-dimensional buckling curves that account for initial imperfections such as residual stresses and out-of-straightness. According to technical standards like IS 800:2007, these effects are categorized into four distinct buckling classes labeled a, b, c, and d. Selecting the appropriate curve depends on the cross-sectional shape, the thickness of the material, and the axis of buckling.
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