Question

Consider the following two statement related to structural steel design, and identify whether they are TRUE or FALSE.

I. The Euler buckling load of a slender steel column depends on the yield strength of steel.

II. In the design of laced column, the maximum spacing of the lacing does not depend on the slenderness of column as a whole.

• A. Both statements I and II are TRUE
• B. Statement I is FALSE, and Statement II is TRUE
• C. Both Statements I and II are FALSE
• D. Statement I is TRUE, and Statement II is FALSE

Answer 1

The correct option is C Both Statements I and II are FALSE

$\text{Euler buckling load (P)}=\frac{{\pi }^{2}EI}{l_{eff}^2}$

$\therefore$ Euler buckling load is independent of yield strength of steel.
Maximum spacing of lacing bars shall be such that the maximum slenderness of the main member between consecutive lacing connection is not greater than 50 or 0.7 times the most unfavourable slenderness ratio of the member as a whole.