Question

The maximum effective slenderness ratio for a tension member in which reversal of direct stress occurs due to loads other than wind or seismic force: 
1. 180
2. 220
3. 550
4. 430
5. 500

Answer 1

Correct Answer - Option 1 : 180

Explanation

As per clause number 3.8 of IS 800:2007, table number 3:

i) The maximum effective slenderness ratio for the members always under tension (other than pre-tensioned members) shall not exceed 400

ii) Code also recommends that the tension members such as bracing’s pre-tensioned members to avoid sag, need not to be satisfy the maximum slenderness ratio limits.

Important Points:

Maximum slenderness ratios for tension members:

Type of Member	λ
A tension member in which a reversal of direct stress occurs due to loads other than wind or seismic forces.	180
A member normally acting as a tie in roof truss or a bracing system but subjected to a possible reversal of stresses resulting from the action of the wind or earthquake forces.	350
Member always under tension	400