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Question
Which of the following buckling curve is applicable about z-z axis for a rolled steel I- section used as a axially loaded compression member shown in the figure, if (h/bf) > 1.2 and tf ≤40 mm
A.
Class - d
B.
Class - a
C.
Class - c
D.
Class - b
Answer ( Option B)

Class - a

Solution

As per Table 10 of IS 800:2007, for a rolled I-section with:
h/bf > 1.2 and tf ≤ 40 mm,
the buckling class about the z–z axis is Class-a.

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