Solar terms that don't block light

1, according to national regulations (design code), the sunshine time from winter to morning shall not be 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. It can also be calculated by the ratio of building height to building spacing = 1: 1.2.

2. The relative distance between the newly-built multi-storey building and the adjacent non-residential building should be no less than 1 times the eaves height of the newly-built building, the distance between the gable and the adjacent building should be no less than 10 m, and the distance between the gables should be no less than 6 m.. The relative distance between a new high-rise building and an adjacent non-residential building shall be determined with reference to the minimum distance between adjacent houses.

If the height of the new building exceeds 10 m, the relative distance between the gable of the new building and the longitudinal wall of the adjacent house, and between the longitudinal wall of the new building and the gable of the adjacent house shall not be less than 10 m; If the height is less than 10 m, the relative distance between the gable of the new building and the longitudinal wall of the adjacent building shall not be less than 1 times the eaves height of the new building; The relative distance between the gables of new buildings and the gables with windows of adjacent houses should not be less than 6m or meet the requirements of fire control laws and regulations.