The most common are the proportions of the “golden section”, since they most meet the laws of visual perception of a person. When such a “divine”, according to the ideas of the architects of the Renaissance, proportionality, proceeds from the fact that the division of a whole segment into two unequal parts is proportional to when a smaller part refers to more as a large one, and vice versa. Approximately the numerical value of this proportion is 3: 5. The proportions of the “golden section” in architecture, sculpture, decorative art have already been known for many centuries. So, during excavations of an ancient Pompei in the sculptor’s house, a proportional compass was found, installed on such a ratio. Moreover, these proportions are also characteristic of many objects of wildlife. We add that the principle of proportion is characteristic not only for professional architecture. In folk architecture, in particular in wooden buildings, a system of proportions was widely used, based on the use of the principle of geometric likeness of the whole (facade and volume of the house) and its parts, elements, details. This system arose as a result of the use of accumulated construction experience. So, when laying the first crown of the quadraries of the quadrary (four -stand), the correctness of the location of the parties was determined by comparison with the diagonals. “The ratio of the sides of the square and its diagonals became the basis for determining the vertical sizes of buildings, primarily cult, but often residential and economic. The maximum simplicity and accessibility of this system made it possible to present the future structure without a drawing and calculate the required amount of material in advance. The system of measures used in Rus’, closely related to the size of a person, also made it possible to make any part of the future building at any time at any time of construction ”. However, closer to business. By setting the dimensions of the building and its parts, we, according to a certain proportional row (for example, according to the ratio of the sides of the square 1: 1, a rectangle 1: 1, 5; 1: 2; 2: 3 and t. D.) We will try to achieve a certain balance of spatial forms and volumes.