What is the ratio between the effective slenderness ratio of battened columns and the maximum slenderness ratio of the columns?
- A1.05
- B1.10Correct
- C1.15
- D1.20
Solution
Concept
Effective slenderness of battened columns
Formula
λe = 1.1 λmax
Step-by-step solution
1. IS 800: the effective slenderness of a battened column is 1.1 times the maximum actual slenderness.
Explanation
The factor 1.1 allows for shear deformation in the battens (1.05 for laced columns).
Why the other options are wrong
1.05 is for laced columns.
Shortcut
Battened 1.1, laced 1.05.
Common mistake
Taking 1.05.
Correct answer: B) 1.10