The typical forms of the roof are "irimoya"roof, "kiriduma"roof, "yosemune"roof. These three are the main streams as to today's residence. Settlement flow, "karahahu", and so on are combined besides this, and a complicated roof is composed. japanese castle and so on is that representative example. The form of the roof has been introduced by China, the Korean Peninsula. Is rank of which of which of "irimoya"roof, "kiriduma"roof, "yosemune"roof ? It is safe if generally it can have it think with the order of "irimoya"roof, "yosemune"roof, "kiriduma"roof though it is wrong by the age.
