Slenderness ratio in a tension member as per IS code:
The slenderness ratio is an important parameter in the design of tension members in structural engineering. It is defined as the ratio of the effective length of the member to its least radius of gyration.

The Indian Standard code for the design of steel structures, IS 800:2007, provides guidelines for the design of tension members. According to this code, the slenderness ratio in a tension member where reversal of stress is due to loads other than winds or seismic load should not exceed 180.

Explanation:
The slenderness ratio is a measure of the member's stability against buckling. When a tension member is subjected to axial loads, it experiences compressive forces that can cause buckling if the member is slender. The slenderness ratio is used to determine if the member is slender or not.

In the case of tension members, the slenderness ratio is calculated by dividing the effective length of the member by its least radius of gyration. The effective length depends on the end conditions of the member and can be different for different support conditions. The least radius of gyration is a property of the cross-section of the member and is related to its shape and dimensions.

According to IS 800:2007, the slenderness ratio in a tension member where reversal of stress is due to loads other than winds or seismic load should not exceed 180. This means that the effective length of the member should be limited in relation to its least radius of gyration. By limiting the slenderness ratio, the code ensures that the member is stable and can resist buckling under the applied load.

Limiting the slenderness ratio to 180 ensures that tension members are designed to have sufficient stiffness and stability. The code takes into account the possible reversals of stress in the member, which can occur due to loads other than wind or seismic loads. By setting a limit on the slenderness ratio, the code ensures that the member can withstand these reversals without buckling or failure.

In conclusion, as per IS code, the slenderness ratio in a tension member where reversal of stress is due to loads other than winds or seismic load should not exceed 180. This limit ensures the stability and strength of the tension member under various loading conditions.