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

Workin stress method is based method of R.C.C Design. Limit state method is based method of R.C.C Design. In working stress method, the material follows Hooke’s law as stress is not allowed to cross the yield limit. Limit state method, stress is allowed to cross the yield limit.

What’s working stress method?

Working Stress Design Method is a method used for the reinforced concrete design where concrete is assumed as elastic, steel and concrete act together elastically where the relation ship between loads and stresses is linear .

What is limit state method?

Limit state design (LSD) refers to a structural engineering design method. A degree of loading or other actions imposed on a structure can result in a ‘limit state’, where the structure’s condition no longer fulfils its design criteria, such as; fitness for use, structural integrity, durability, and so on.

What is stress block as per limit state method?

The stress block of structures or parts of structure designed on the basis of limit state method subjected to the designed loads or collapse loads represents the stress-strain diagram at the defined states of collapse and satisfy the requirements of strength and stability.

What are the different types of limit state method?

There are two main limit states: (i) limit state of collapse and (ii) limit state of serviceability (see Fig. 2.3. 1). (i) Limit state of collapse deals with the strength and stability of structures subjected to the maximum design loads out of the possible combinations of several types of loads.

What is meant by limit state?

A limit state is a condition of a structure beyond which it no longer fulfills the relevant design criteria. The condition may refer to a degree of loading or other actions on the structure, while the criteria refer to structural integrity, fitness for use, durability or other design requirements.