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TermMeaning
Semi-probabilistic performance assessmentAssessment executed by semi-probabilistic approach (e.g. in partial safety factor format and in the global resistance format) where the compliance with the criterion that a design value of a resistance is larger than a design value of a corresponding load effect is verified.1
1 Design values for the load bearing capacity Rd are chosen to have a sufficiently low non-exceedance probability and design values for loads Sd are chosen to have a sufficiently low exceedance probability such that the design criterion in the limit (Rd = Sd) corresponds to the required level of reliability.
Semi-quantitative risk analysisEstimation of level of risk in a descriptive manner, where either probabilities or consequences of undesirable events are being categorized instead of quantified.
Structural componentComponents to be used as load-bearing part of works designed to provide mechanical resistance and stability to the works and/or fire resistance, including aspects of durability and serviceability.
Structural memberPhysically distinguishable part of a structure, e.g. column, beam, plate, foundation.
Structural performanceThe behaviour of a structure, a structural component, or a condition as a consequence of actions, usually classified by means of a quantitative parameters (e.g. reliability index, ratio between resistance capacity and action effect).
Structural performance assessmentSet of activities performed in order to verify the reliability of an existing structure, allowing a prognosis to be made of current and future performance, taking account of relevant deterioration mechanisms and, if appropriate, predictions of potential future damage.
Structural performance criteriaQuantitative limits, associated to a performance requirement, defining the border between desired and adverse behaviour.1
1 in context of limit state approach, performance criteria are the threshold values that describe for each limit state the conditions to be fulfilled.
Structural performance evaluationProcess undertaken after to performance assessment, that is concerned with evaluating whether any intervention is required to meet the specified performance requirements (original or revised) in order to allow the structure to remain in service during the specific period of time.
Structural performance requirementsA condition for design, or an actual, potential or intended option for intervention, aiming at meeting a specified performance criterion during the service life with appropriate reliability and in a sustainable way.1,2
1 Performance requirements are established by means of performance criteria and associated performance indicators and constraints related to service life and reliability.
2 Performance requirements refer to the fulfilment of the essential demands of the stakeholders (i.e. owners, users, contractors, society) during the intended lifetime of structures or structural elements. […..]
Structural safetyAbility (of a structure, structural component or structural member) to guarantee the overall stability as well as an adequate ultimate bearing resistance, corresponding to the assumed actions and the required reliability for the specified reference period1,2
1 Structural safety is usually expressed by the ratio (safety factor) between the actions that would cause collapse or other similar forms of structural failure and the actions that are imposed upon it in service.
2 In context of Limit State Approach Structural safety is defined as ability exceedance of the Ultimate Limit States.
StructureOrganized combination of connected structural components designed to fulfil specific functions with adequate reliability with regard to safety, serviceability and sustainability, for a defined period of time.
Surveying technologyTechnology applied to collect data during the survey process, which aims at gathering information about the shape and current condition for a network, structure, its components or elements and/or to about the relevant actions and hazards.