A Cost-Benefit Methodology for Selecting Analytical Reinforced Concrete Corrosion Onset Models

Table 13

Level of complexity with respect to the situation of supplying model’s parameters.

Complexity level	Supplied from
	Expert advice	Auscultation data
1	Available in the building archive	Available data (e.g., meteorological data)
2	Not directly available in the building archive, may be assessed by empirical relationships using data of level 1, or with an average level of expert knowledge	Destructive or NDT (may require extraction process with limited experimental testing and direct assessment with NDT)
3	Not available in the building archive, requires literature investigation, could be assessed with intermediate models using data from level 2, requires good expert knowledge	Destructive or NDT (may require extraction process with specific experimental testing and requires indirect assessment from NDT data analysis)
4	Could only be computed with advanced intermediate models, could be assessed with a high level of expert knowledge	Only destructive testing, with particular experimental procedure, or may require combination of several experimental tests