# Working stress design or Limit state design?« Back to Questions List

 Which method is better; working stress design or Limit state design and why? Posted by info civil Asked on February 27, 2016 11:32 am
 ▲ 3 ▼ Limit state design is better as it gives you economical section for structural members. Posted by civilweb Answered On February 27, 2016 11:46 am
 ▲ 1 ▼ Working stress considers material strength only upto elastic limit whereas limit state considers the material strength upto ultimate value. so it gives economical results Posted by Satish Kumar Answered On February 28, 2016 8:58 pm
 ▲ 1 ▼ deflection control requires working stress method better than limit state yet, limit state saves quantity of material but fire resistance on meterials suggest working strength is better working strength is safer but lesser economical now Euro code has removed all such resrictions refer to Euro codes for better understanding Posted by suraj Answered On June 13, 2016 2:00 am
 ▲ 0 ▼ General theory of WSD method is reducing the capacity of material. For example, in WSD method compressive capacity of concrete is considered as f’c=0.6*fc, but in USD method we consider the full capacity but a safety factor is always used in the equation.for example, f’u= fi * fc Posted by Badhan Saha Answered On January 28, 2017 12:07 am
 ▲ 0 ▼ General theory of WSD method is reduce the capacity of material. For example, in WSD method compressive capacity of conrete is considered as f’c=0.6*fc, but in USD method we cinsider the full capacity but a safety factor is always used in the equation.for example, f’u= fi * fc Posted by Badhan Saha Answered On January 28, 2017 12:07 am