Second, the building spacing regulations.
It can be calculated by the ratio of building height to building spacing = 1: 1.2.
According to the national regulations (design code), the sunshine time from winter solstice is not less than 1 hour (bottom window of residence). The distance is the height from the outdoor terrace of the building to the eaves of the building /tan(a)a—— the solar altitude angle at noon from winter to Sunday.
Left-right spacing of houses: 6m for multi-storey buildings (4-6 floors and below), 9m for multi-storey buildings and high-rise buildings (12 floors and above), and 13m for high-rise buildings.
In general, the building spacing on the planning drawings of development and construction projects should meet the requirements, otherwise it will not pass the examination and approval. But if you think the building spacing is too small, you can look for the supervisor or someone who knows the drawings.