The purpose of the study is to determine the methodological principles of architectural - planning the expansion of art museums. The object of the research is the art museum. Purpose of the study - methodical bases of architectural - planning the expansion of art museums. Research methods. General method of investigation is based on a complex method of functional - structural analysis, which includes: a method of critical analysis of the scientific and technical literature, and virtual field surveys photofixation, statistical analysis of the museums, literature and project documentation, search design. The methods, expansion of art museums calculation based on the number and size of the pieces of land, the maximum number of simultaneous visitors, determine the volume - spatial construction expansion. Research based on their own experience of scientific - research, search, and project work. Scientific novelty of the results is that: classification by expansion of art museums set criteria (by capacity, on floors, on a relatively main building and relatively level ground, by the number of functional areas, the period of use, etc.) first considered and systematic methods of expanding art museums, by historical stages of development; scientific principles formulated by the expansion of art museums (the museum's integrity, continuity view exhibits, architectural - spatial integrity, comfort conditions, visit the museum, safety deposit exhibits); the technique of designing expansion of art museums depending on the number and size of the pieces of land, improved method of calculating the maximum number of simultaneous visitors, the method of determining the volume - spatial construction expansion; further developed techniques of architectural - artistic expression art museums. The use of the results will help apply them in the real expansion of the design and construction of museums, can be taken into account when developing regulations and used in the educational process of higher education institutions architectural - building structure and scientific - methodical work of employees of museums.
