keshō daruki 化粧垂木

Exposed rafter. In general, any visible rafter as opposed to one not visible *nodaruki 野垂木. For example, the term *jidaruki 地垂木 (base rafter) which is seen in the pentroof or under the roof overhang can be called keshō daruki. Jidaruki was the common term before the hidden roof *noyane 野屋根 was invented at the end of the 10th century. In order to overcome a confusion in terminology, the term exposed rafter keshō daruki was used to distinguish it from the hidden rafter used in hidden roof construction.