INFRASTRUCTURE BREAKDOWN AND HIERARCHICAL ORGANIZATION
For rational maintenance of the pavement, all covered surfaces are divided into different zones based on the hierarchical principle of different levels, known as the Pavement Grid Map. The first level consists of operating areas (branches), which have various functions: runway, carriageway, connections, parking, service roads, etc. These zones, in turn, are divided into Homogeneous sections, i.e., sections with similar design features:
The thickness of the screed and the status of the permissible load;
Traffic and the level of general load.
This division is essential to define the decline curves of each section and to decide on the maintenance activities to be performed.
Each section is further divided into adequate zones of constant area (300-400 m²) in the number of elementary zones, which are defined according to various indicators that are associated with them (PCI, roughness, permissible load, friction, etc.). For each zone, the destruction indicator is assessed for a number of structural or functional aspects.