ISO 22111:2019
Bases for design of structures — General requirements
This document provides the requirements for structural design and procedures following a semi-probabilistic approach that conform to the general principles for structural reliability as stipulated by ISO 2394. The scope of requirements and procedures are accordingly limited to the design of structures for which sufficient knowledge and experience are commonly available on design and construction practice to ensure that target levels of reliability account for the nature and consequences of structural failure. Situations outside these limitations are covered by ISO 2394.
The methods that are included in this document are the semi-probabilistic limit states approaches that are proven to achieve sufficient and consistent levels of structural reliability.
This document relies on standardized procedures for the characterization of the load bearing performance of the structures within its scope. Sufficient information is needed on uncertainties of design variables and models to be able to derive semi-probabilistic design measures for verification of structural reliability within the scope of this and the related design standards.
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 General terms
3.2 Terms related to design and assessment
3.3 Terms related to actions and resistances
4 Symbols and abbreviated terms
4.1 General
4.2 Latin characters
4.3 Greek characters
4.4 Subscripts
5 Fundamental requirements for structural performance
5.1 General
5.2 Design situations
5.3 Limit states
5.4 Considerations for actions, environmental influences and action combinations
5.5 Considerations for resistance
5.6 Considerations for design verification
6 Classification for establishing reliability
6.1 Safety consideration
6.2 Serviceability consideration
6.3 Reliability classes
7 Principles of limit states design
7.1 General
7.2 Verification of ultimate limit states
7.3 Verification of serviceability limit states
8 Actions
8.1 General
8.2 Permanent actions
8.3 Variable actions
8.4 Accidental actions
8.5 Evaluation of actions and their effects
8.6 Design values of actions
8.7 Characteristic values of actions
9 Combinations of actions
9.1 General
9.2 Design scenarios
9.3 Additional considerations for serviceability limit state
9.4 Design values of combinations of action effects
10 Resistance
10.1 General
10.2 Material properties
10.3 Geometrical data
10.4 Characteristic values of resistance parameters
10.5 Design value of resistance
11 Analysis and testing
11.1 Analysis
11.2 Testing
12 Demonstrating conformance with requirements
12.1 General
12.2 Ultimate limit state
12.2.1 Resistance
12.2.2 Static equilibrium
12.2.3 Accidental design situation
12.2.4 Seismic design situation
12.3 Serviceability
12.4 Robustness
12.4.1 General
12.4.2 Design strategies
12.4.3 Prescriptive verification measures
12.4.4 Collapse scenarios
12.5 Durability
Annex A (informative) Guidance for the adoption of this document
Annex B (informative) Formats for presentation of design values for combinations of actions
Annex C (informative) Target reliability differentiation in existing standard practice
Annex D (informative) Design procedure
Bibliography
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Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
3.1 General terms
3.2 Terms related to design and assessment
3.3 Terms related to actions and resistances
4 Symbols and abbreviated terms
4.1 General
4.2 Latin characters
4.3 Greek characters
4.4 Subscripts
5 Fundamental requirements for structural performance
5.1 General
5.2 Design situations
5.3 Limit states
5.4 Considerations for actions, environmental influences and action combinations
5.5 Considerations for resistance
5.6 Considerations for design verification
6 Classification for establishing reliability
6.1 Safety consideration
6.2 Serviceability consideration
6.3 Reliability classes
7 Principles of limit states design
7.1 General
7.2 Verification of ultimate limit states
7.3 Verification of serviceability limit states
8 Actions
8.1 General
8.2 Permanent actions
8.3 Variable actions
8.4 Accidental actions
8.5 Evaluation of actions and their effects
8.6 Design values of actions
8.7 Characteristic values of actions
9 Combinations of actions
9.1 General
9.2 Design scenarios
9.3 Additional considerations for serviceability limit state
9.4 Design values of combinations of action effects
10 Resistance
10.1 General
10.2 Material properties
10.3 Geometrical data
10.4 Characteristic values of resistance parameters
10.5 Design value of resistance
11 Analysis and testing
11.1 Analysis
11.2 Testing
12 Demonstrating conformance with requirements
12.1 General
12.2 Ultimate limit state
12.2.1 Resistance
12.2.2 Static equilibrium
12.2.3 Accidental design situation
12.2.4 Seismic design situation
12.3 Serviceability
12.4 Robustness
12.4.1 General
12.4.2 Design strategies
12.4.3 Prescriptive verification measures
12.4.4 Collapse scenarios
12.5 Durability
Annex A (informative) Guidance for the adoption of this document
Annex B (informative) Formats for presentation of design values for combinations of actions
Annex C (informative) Target reliability differentiation in existing standard practice
Annex D (informative) Design procedure
Bibliography