DBTR — Volumetric unit — (UVL_GPG)

The surface of each building is divided into Volumetric Units through dividers, i.e. lines of separation between elements of different heights and homogeneous plant. Volumetric parts are those which are significant for the purposes of a volumetric quantification of the building structure regardless of the inclination and conformation of the rooftops. The volumetric parts of buildings shall be represented if the differences in eaves are greater than the permitted altimetric tolerance, with the following exclusions: swings, barks, skylights, terraces made in the groundwater, chimneys, chimneys on the roofs and any other element not directly connected with the volumetry of the building and such as not to identify a building body from sky to ground differentiated from the adjacent ones. Technical volumes protruding from the roof gauge (van lifts, stairwells, central and technological compartments, etc.) should also be excluded if they do not constitute a separate and autonomous building body.