DBTR2013 - Volumetric unit - (UVL_GPG)

The surface of each building is divided into volumetric units by means of dividers, or lines of separation between elements of different heights and homogeneous plan. By volumetric parts we mean those significant for the purposes of a volumetric quantification of the building structure regardless of the inclination and conformation of the roof pitches. The volumetric parts of the buildings must be represented if the height differences in the gutters are greater than the permitted altimetric tolerance, with the following exclusions: roof terraces, dormer windows, skylights, terraces obtained in the groundwater, chimney pots, flues on the roofs and any other element not directly connected with the volume of the building and such as not to identify a building body from heaven to earth that can be differentiated from the adjacent ones. The technical volumes protruding from the shape of the roof (lift shafts, stairwells, power plants and technological rooms, etc.) are also to be excluded if they do not constitute a distinct and autonomous building body.