Question

Which is an ideal section for compression member?

(a) one having different moment of inertia about any axis through its centre of gravity

(b) one having same moment of inertia about any axis through its centre of gravity

(c) one having larger length

(d) one made up of costly material

This question was addressed to me during an online interview.

I would like to ask this question from Behaviour of Compression Members & Types of Sections in chapter Design of Compression Members of Design of Steel Structures

Answer 1

Correct option is (b) one having same moment of inertia about any axis through its centre of gravity

For explanation: Ideal section is the one which has same moment of inertia about any axis through its centre of gravity.