What is the difference between the limit state and working stress method?

Question

Accepted Answer

Limit state method and working stress method are two different approaches used in structural design.

Limit state method focuses on the ultimate limit state, ensuring that the structure can withstand extreme loads without failure.
Working stress method considers the working or service loads and aims to keep the stresses within the elastic range of the material.
Limit state method uses partial safety factors to account for uncertainties in material properties, loads, and design assumptions.
Working stress method relies on a factor of safety to ensure the structure can handle the applied loads.
Limit state method is more modern and widely used, while working stress method is considered more conservative and less accurate.

Accepted Answer

The strength assumption of the steel changes