Abstract
It is possible to find many examples of medieval architecture preserved in ordinary structures in Nepal, but it is the Darbar palace in the cities of Kathmandu, Patan and Bhadgaon in the Kathmandu Valley, which best perpetuate the traditional style of Nepalese architecture. This article considers the structures of quardrangles called Chok which are a major architectural feature of palace construction by surveying original features of each buildings, in attempt to clarify their historical character. As a results, we were able to draw out the following conclusion : There were two typical types of structure as Chok quadrangle in Mal Chok and Sundara Chok of Palace buildings of Malla Dynasty. These Chok had their own specific structure in their courtyards consisting of a square courtyard and Dalans of three directions with symmetrical axis running from south to north, which was similiar with that of Budhhist monastery Baha. In the Shah Dynasty, the structure of Chok quardrangles were extended not only vertically but also horizontally with changing their coutyard structure to enphasis its front.
