shi　枝

KEY WORD :　architecture / measurements

Also written 支. An ancient unit used to count long, slender objects. Remaining from this ancient system is the expression *isshi 一枝, used in reference to the placement of parallel inner roof or eaves rafters in temple and shrine architecture. In a system known as honshigewari 本繁割, isshi (literally one shi) is the distance from the center of one rafter to the center of the next (see *shinshin kyori 心々距離). Used from the late Kamakura period, isshi was in turn used to determine other architectural proportions, including the outer measurements *sotonori 外法 of both ends of bearing blocks *masu 斗, the width of small bearing blocks *makito 巻斗, the length of frog-leg struts *kaerumata 蟇股, and so on.

REFERENCES:

*tarukiwari 垂木割

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