The article deals with the human activity that is carried out in the spatial-geometrical conditions of the city. The main interest presents the distribution of forms an activity on the territory of the urban area. The allocation identified the social and functional frames or carcases, which characterized by the consolidation of properties, density, sparsity, and scattering. The skeletons set the degree of mixed use and diversity activities, and track the social and functional processes of their dynamics and changes in the spatial and geometrical properties of the urban environment.

Keywords: Human activities, spatial and geometric conditions, distribution activities, social and functional carcases, consolidation and diversity of activities