An analysis of key factors in the visual quality of the walls of residential buildings in the Qajar period of Tabriz

analyzing the visual quality of the walls of residential buildings in Qajar houses in Tabriz. The method used in the present study is descriptive, analytical and exploratory and its approach is documentary and survey. In the present study, in order to analyze the data, the method of structural studies in the form of Mick Mac software has been used to identify the key factors of the system. In this regard, 50 experts in the field of architecture of historical monuments and cultural heritage were used to weigh the indicators. Based on the results, 10 factors of architectural creativity, the presence of visual richness in the building facade, unity of elements, visual proportions of the facade, balance-rhythm-similarity-symmetry-homogeneity, the proportion of visual elements, the degree of balance, hierarchy , The degree of attention to visual beauty and the existence of hierarchy between different scales were identified as key factors influencing the system. Also 10 very influential components of the system including psychological perception of beauty, the presence of visual richness in the building facade, the amount of visual attraction, beauty and fit of doors and windows, unity and harmony, fit and continuity of the building, the fit of architecture in the facade