Permissible Bending Stress in Steel

Bending stress is defined as the stress induced in an object or material when it undergoes a bending load or force. The permissible bending stress in steel refers to the maximum amount of bending stress that a steel material can withstand without undergoing permanent deformation or failure.

Permissible Bending Stress in Steel for SSC

The correct answer to the given question is option B, i.e., 1890 kg/cm2. This value is based on the standard permissible bending stress limit specified for mild steel, which is commonly used in various construction and engineering applications.

Factors Affecting Permissible Bending Stress in Steel

Several factors can affect the permissible bending stress limit of steel, including:

1. Material properties: The type and quality of steel used can significantly affect its bending stress limit. Higher-grade steels generally have higher permissible bending stress limits.

2. Cross-sectional area: The cross-sectional area of the steel material also plays a role in determining its bending stress limit. Thicker sections can generally withstand higher bending stresses compared to thinner sections.

3. Length of the beam: The length of the steel beam or material subjected to bending stress can impact its permissible bending stress limit. Longer beams are generally more susceptible to bending stress failure than shorter beams.

4. Loading conditions: The type and magnitude of the load or force applied to the steel material can also affect its bending stress limit. For example, dynamic or cyclic loads can cause fatigue failure of the material, reducing its permissible bending stress limit.

Conclusion

In summary, the permissible bending stress in steel refers to the maximum amount of bending stress that a steel material can withstand without undergoing permanent deformation or failure. The value of this limit for mild steel is commonly specified as 1890 kg/cm2, although it can vary depending on several factors such as material properties, cross-sectional area, length of the beam, and loading conditions.