Question:
In the design of lacing system for a built-up steel column, the maximum allowable slenderness ratio of lacing bars is
In the design of lacing system for a built-up steel column, the maximum allowable slenderness ratio of lacing bars is
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Important IS 800:2007 limits:
• Maximum slenderness ratio of lacing bars = 1
• Lacing bars ensure that built-up columns behave as a single member.
• Maximum slenderness ratio of lacing bars = 1
• Lacing bars ensure that built-up columns behave as a single member.
Updated On: Jul 23, 2026
- \(120\)
- \(145\)
- \(180\)
- \(250\)
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Verified By Collegedunia
The Correct Option is B
Solution and Explanation
Concept:
Lacing bars are provided in built-up steel columns to connect the individual components and ensure that they act as a single unit.
According to IS 800:2007, the slenderness ratio of lacing bars should not exceed
\[
\boxed{1}
\]
This limitation prevents excessive buckling of the lacing members.
Step 1: Understand the purpose of lacing bars. Lacing bars provide stability by transferring shear between the individual members of a built-up column. They ensure that all components deform together under loading.
Step 2: Apply the IS code provision. As per IS 800:2007, \[ \boxed{\lambda_{\max}=1} \] Hence, the maximum permissible slenderness ratio is \[ 1 \] Therefore, the correct option is \[ \boxed{(B)\;1} \]
Step 1: Understand the purpose of lacing bars. Lacing bars provide stability by transferring shear between the individual members of a built-up column. They ensure that all components deform together under loading.
Step 2: Apply the IS code provision. As per IS 800:2007, \[ \boxed{\lambda_{\max}=1} \] Hence, the maximum permissible slenderness ratio is \[ 1 \] Therefore, the correct option is \[ \boxed{(B)\;1} \]
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