limit state method Archives » Technical Civil

Working Stress Method

December 3, 2018March 30, 2019 Technical Civil

This is the traditional method of design, used not only for reinforced concrete but also for structural steel and timber. This method of designed was evolved around the year 1900. This method was accepted by many national codes. India’s code IS:456-1953 was based on this method. It was revised in 1957, 1964, 1978, 2000 and reaffirmed in 2005 and its tenth reprint was in 2007. This method is based on linear elastic theory. This method ensures adequate safety by suitably restricting the stresses in the materials induced by expected working…

Limit State Method

November 23, 2018April 9, 2019 Technical Civil

In this method of design, the is designed to withstand the safety of for all loads liable to act on it throughout its life, it also satisfied the serviceability requirements such as limitation on deflection and cracking. The aim of design through this method is to achieve acceptable probabilities that structure will become unfit for use to which it is built. It means that it will not reach a limit state or critical state. All relevant limit states should be considered in design to ensure an adequate degree of safety…