The article presents a system research of the factors of formation of architectural and typological models of a medium-rise dwelling. The research was conducted in two stages. At the first stage, the main internal and external factors of building architectural and typological models based on the study and processing of literary sources, analysis of modern domestic and foreign experience in designing medium-rise housing are collected and systematized. The structural elements of the factors are systematized according to well-established architectural concepts. At the second stage of the study, a matrix of dependencies between external and internal factors was formed, and the number of dependencies between internal and external factors was calculated. Based on the data obtained, the internal factors were grouped by the number of links with external factors. The obtained results of the system research provide the basis for further construction of a limited number of the most versatile and flexible architectural and typological models that take into account the greatest number of environmental conditions.

Keywords: architectural and typological models, urban planning conditions, cultural conditions, national and ethnographic conditions, natural and climatic conditions, socio-demographic conditions, medium-rise housing

The article examines the current state of classification of planning structures of medium-rise residential buildings. An extension of the classification is offered based on the results of the analysis of modern national and foreign experience in the design of medium-rise residential buildings and the study of literary sources. New types are designated: a blocked and atrium medium-rise residential building. Medium-rise single-family and small-family block houses, their features, advantages and variations of the architectural and spatial structure depending on the location of residential cells are analyzed. The classification of atrium low-rise and multi-apartment medium-rise residential buildings is formulated. The closed and open atrium houses, their socio-economic and sanitary-hygienic advantages are considered. It has been established that residential cells in medium-rise blockaded and atrium residential buildings provide active recreation and professional work for a significant part of the modern urban population. The conclusion about the prospects of new types of medium-rise residential buildings is substantiated.

Keywords: architectural and spatial structure, atrium, atrium house, blocked house, urban dwelling, classification of residential buildings, planning structure, socio-professional structure of the population, medium-rise apartment building, residential cell

The article analyzes the evolution of the architectural and spatial structure and recreational complex of mass housing in the largest cities of Southern Russia in relation to the socio-professional structure of the population from the beginning of the twentieth century to the present day. The research method is based on the provisions of the concept of the evolution of residential architecture based on the development of a recreational complex, developed by Professor V.M. Molchanov. The research method consists of conducting a retrospective analysis of the architectural and spatial structure and recreational complex of housing in the largest cities of Southern Russia based on the study and processing of literary sources, graphical analysis of the prevailing APS residential development in each designated period. Based on the revealed relationship, the social foundations of the formation of the architecture of mass housing in the period under review were revealed. Based on the results obtained, a forecast was made about prospective forms of organization of the architectural and spatial structure of the dwelling, taking into account current changes in professional groups of the post-industrial era, including a growing number of workers employed in the information sphere, culture and education. The conclusion is substantiated about the prospects of medium-rise urban development, which provides active recreation and professional work for a significant part of the modern urban population.

Keywords: architectural and spatial structure, urban housing, mass housing, recreation and wellness complex, social foundations of design, socio-professional structure of the population, evolution of housing