Reinforced concrete is a material widely used in civil construction, due to the combination of concrete and steel, which guarantee both structural strength and flexibility to create different architectural forms. However, it is essential to understand that this material wears out over time and the knowledge of this deterioration process can guarantee and extend its service life. Yet, the complexity of the variables linked to the increase of the structure degradation makes the assessment of structural integrity a difficult subject to interpret, in which there is a certain subjectivity. For this, tools are used in civil engineering to mitigate possible inaccuracies in these analyses. Damage assessment methodologies in reinforced concrete structures are examples of resources for this purpose, also contemplating the quantitative methodology as a good approach to test hypotheses in an objective and systematic way. As an example, there is the MAIS Method (Oliveira, 2021), which follows a series of steps in the collection and analysis of numerical data to understand the phenomenon of degradation and provide a result that allows assessing the safety and durability of a reinforced concrete structure. Thus, this article proposes an analysis of the damage scales and equations used in this Method to quantify the integrity of a structure. In other words, the Method presents results that seek to represent the real level of criticality of an existing deteriorated reinforced concrete structure, in which the scales and equations used express what is observed at the time of an inspection carried out by a qualified professional. The results obtained were able to clearly translate the impact of the change in scales on the integrity curves. In addition, it was possible to observe numerical damage results, taken from a real structure, within the performance loss curve.