The effect of proportional of open space to semi-open space in better use of climatic conditions in houses in coastal and foothill areas of East Gilan

Having a mild and humid climate, Gilan province is closer to the comfort zone than other regions of Iran. In addition, the use of radiation, wind, precipitation and humidity components in the spatial organization of native houses has led to the formation of a semi-open space next to the closed space. In general, the placement of spaces in this climate is such that there is no clear border between them. In the native houses of these regions, there have long been ways of construction and proportions in each of the four climate zones: coastal, foothills, plains, and mountains, which made it possible to create a place for comfortable living by using passive systems. Therefore, in the current situation and considering the unfavorable environmental situation and lack of energy in the world, this type of design is important. This article aims to make better use of the climatic conditions in the design of the house in search of an answer to the question, what is the relationship between the ratio of closed and semi-open space with the range of comfort? And what proportion of the two semi-open and closed spaces, in the houses of coastal and mountain areas, is closer to the comfort zone? This research is of the correlation type; Its research method is observation and field sampling in the data collection step, and data analysis and inductive reasoning in the judgment step. The article first investigates and analyzes how climatic components affect the comfort optimization of houses; Then, by random sampling, it analyzes and evaluates the relationship between the ratio of closed to semi-open space with the range of comfort in the houses of the two regions. The achievement of the article is that the semi-open space occupies a significant percentage of the area of ​​the houses in the coastal and foothill areas. The difference in the width, length and height as well as the orientation of the porch in these two areas is due to the difference in microclimate of these two areas, and the native architecture of this area has been able to help improve the thermal comfort of the residents of the houses by harmonizing with the special climatic conditions of each area. In houses in the foothills, the ratio of closed to semi-open spaces is 3.63 on average, and in coastal houses, this ratio is 1.47. Thus, it can be concluded that if this ratio is observed in contemporary houses, more comfort will be created.