Correct Answer - Option 4 : 50
Explanation
- The slenderness ratio of the component members, in the case of laced built-up columns, should not exceed 50 or 0.7 times the unfavorable slenderness ratio of the column as the whole
- For the same configuration and end conditions, a laced column is stronger as compared to the battened columns.
Note:
Here it is asked about the slenderness ratio of elements (Component members) of a built-up section. So the answer is 50
Slenderness ratio limits:
- For the pure tension member, the maximum slenderness ratio is 400.
- For a hanger bar (selling fan rod) maximum slenderness ratio is 160.
- If a tension member subjected to reversal of stress due to live load or any other load then the maximum slenderness ratio is 180.
- For a tension member in a roof truss subjected to reversal of stress due to wind load or earthquake load, the maximum slenderness ratio will be 350.
- The Maximum slenderness ratio for lacing members is 145.
