Steel Structure Design - Section 1 (5)

The most economical section for a column, is

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The equivalent axial tensile load Pe, which produces an average axial tensile stress in the section equivalent to the combined stress due to axial tension P and bending M, at the extreme fibre of the section, is given by (where Z is the section modulus of the section).

A structural member subjected to compressive stress in a direction parallel to its longitudinal axis, is generally known as

Pick up the correct statement from the following:

Slenderness ratio of a compression member is

The critical load for a column of length I hinged at both ends and having flexural rigidity El, is given by

If the moment of inertia of a section about its axis is I and its effective sectional area is A, its radius of gyration r about the axis, is