Question

Consider the following statements :

The true statements are:

• A. 2 and 3
• B. 1 and 3
• C. 1, 2 and 3
• D. 1 and 2

Answer 1

The correct option is D 1 and 2

1. Effective length of a battened column is increased by 10%


2. Permissible stress is bending compression, depends on the yield stress of steel and on slenderness ratio.

$Eulerbucklingstress=\frac{{\pi }^{2}E}{{\lambda }^2}$
$\lambda =f_n\left(\text{Euler buckling stress}\right)$

So ${\sigma }_{cbc}$ depends on both yield stress of steel and Euler buckling stress.

3. Ideal condition is that column effectively held in position at both ends but not restrained against the rotation. Both are the same hence statement 3 is false .