Abstract
It has been 400 years since many castle masonry walls were constructed. Most of them are deformed and in the critical situation of collapse. In order to restore these masonry walls, as cultural properties, it is necessary to grasp their characteristics of deformation as correct as possible. First, the cross sectional shape of the castle masonry walls was measured. Secondly, it was examined whether the three design procedures are adaptable to the restoration of the walls. They are three manuals adopted in Japan in the past, “Gotou-ke Monjyo”, “Ishigaki Hiden-no-sho” and “Sekishou-sho”. As a result it has clarified that three design procedures can be formulated as three different equations. Besides, good correlation was found between the equations and the really measured values of masonry walls.