A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
General Structural Design Criteria
The chapter deals with structural safety, that is the definition of the safety margins to assure that failure of a structure will occur or that specific criteria will be exceeded for very low probability levels. These levels depend on the type of construction and consequences on the safety of people and damage to property. Any dangerous situation for a building is denoted as a “limit state”: it represents a condition at which the building is no longer able to perform the functions for which it was designed. The limit states are classified into ultimate limit states (ULS) and serviceability limit states (SLS) according to the severity of their consequences. ULS are associated with the collapse of the whole structure or some of its parts. SLS affect the functioning of the structure, comfort of people and appearance of the structure and can be reversible (no residual effect remains once the loads are removed) or irreversible (some effects remain). The structural safety verification method indicated in EN1992-1-1, as well as in all Eurocodes, is the partial factor method or semi-probabilistic method. The method does not require the designer to have any knowledge of the probabilistic methods for the analysis of structural safety, because the probabilistic aspects of the problem are already considered in the calibration process of the method itself, i.e., in the choice of the characteristic values, the partial safety factors, etc.
General Structural Design Criteria
The chapter deals with structural safety, that is the definition of the safety margins to assure that failure of a structure will occur or that specific criteria will be exceeded for very low probability levels. These levels depend on the type of construction and consequences on the safety of people and damage to property. Any dangerous situation for a building is denoted as a “limit state”: it represents a condition at which the building is no longer able to perform the functions for which it was designed. The limit states are classified into ultimate limit states (ULS) and serviceability limit states (SLS) according to the severity of their consequences. ULS are associated with the collapse of the whole structure or some of its parts. SLS affect the functioning of the structure, comfort of people and appearance of the structure and can be reversible (no residual effect remains once the loads are removed) or irreversible (some effects remain). The structural safety verification method indicated in EN1992-1-1, as well as in all Eurocodes, is the partial factor method or semi-probabilistic method. The method does not require the designer to have any knowledge of the probabilistic methods for the analysis of structural safety, because the probabilistic aspects of the problem are already considered in the calibration process of the method itself, i.e., in the choice of the characteristic values, the partial safety factors, etc.
General Structural Design Criteria
Angotti, Franco (author) / Guiglia, Matteo (author) / Marro, Piero (author) / Orlando, Maurizio (author)
Reinforced Concrete with Worked Examples ; Chapter: 1 ; 1-21
2022-06-05
21 pages
Article/Chapter (Book)
Electronic Resource
English
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