Abstract
In the pre-war Showa era while flat shaped small and medium housing was established, the room environment became westernized and secured separation. On the other hand, hygiene of the home was given more importance and it is considered that passive methods were applied based on climatic design theory to improve ventilation within the home. Therefore, in our research, we categorically extracted interior design methods developed for pre-war Showa era climatic design theory from floor plan related books published from the start of the Showa era (1926) to the 16th year (1941). As a result, we categorically extracted 14 items of interior climate control methods and 10 indexes of analyses. Showa pre-war era passive methods of applied ingenuity content for flat shaped houses as seen in traditional private homes are quite a few, however it can be considered that a scientific approach was developed such as the setting of goal index standards for optimum conditions of interior climate control.
