Jia in Traditional Chinese Timber-Frame Architecture:The Terminological Meaning and Structural Evolution
Sorting out historical documents,material objects,and the development of traditional Chinese timber-frame architecture,this paper points out the original meaning of Jia is a structural unit of two pillars supporting a purlin,and investigates the evolving usage of"jia"as a fundamental term to describe the depth of traditional Chinese timber frame architecture.Considering the use of jian"(bay)as associated with"jia",this paper examines the conceptual changes behind the terms and the relationship between the terms and the transformation of the structural frame.