The district idea is a urban planning theory used for the design of cities during the reconstruction period after the Second World War.
In the book The City of the Future, the future of the city, already written during the Second World War, ir. Bos and Ir. Willem van Tijen set apart their theory, the district idea. Also, the Rotterdam CIAM Delegation Building was involved in the development and implementation of the neighborhood idea, including Lotte Stam-Beese, who processed the theory in the Rotterdam districts of Pendrecht and Hoogvliet.
The basic idea of the district idea is decentralization of the city. According to this theory, people's lives are organized hierarchically around different social groups on different scales. A neighborhood unit with a district center should consist of 20,000 people, consisting of neighborhoods each with a neighborhood. An important assumption in this system is that a neighborhood is equal to a village. A big city would be too conspicuous to live, so it could better consist of a network of neighborhoods, which form a neighborhood in neighborhoods. For the neighborhood idea it is important to keep insightful of the spatial units in the city. Therefore, it is often clear to the urban planning of the district that the different ranks are placed.
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