○Rules for Housing Placement in Flat and Complex Terrains

     If possible, a circle of 4km (Flower of Life) is arranged, but the terrain can be complex in mountainous areas. Even in such cases, a multipurpose facility is first built in the center and residences are arranged as circularly as possible. If it's a narrow place where only one house can be built, residences might be lined up in a straight line. In that case too, a minimum distance of 4m is maintained between houses.

○A multi-purpose facility is first built in the center of the autonomous body (see right diagram).

○In accordance with the terrain, circles of 4km, 1333m, 444m, 148m, 49m (6 residences), 16m (1 residence) are arranged in sequence to fill the gaps (see right diagram).

○No residences are built along the river. Past flood data are examined, and construction is carried out tens of meters away from the riverbank (The left diagram might indicate that the river and residences are too close).

○Considering the risk of landslides and slope failures, construction is carried out at a distance beyond the predicted reach of sediment (The left diagram might indicate that the distance between the slope and residences is too close).

○Assume that when heavy rainfall continues for two days, a narrow place sandwiched between the slopes of a mountain will be hit by a muddy stream (The left diagram indicates a high risk if there is a river on the slope of the mountain).