Abstract
The stability of Japanese castle masonry walls is determined by their 3 dimensional levels i. e. height, gradient, thickness and average density, and the stone piling-up techniques of respective time of construction of m. w.. The stability of the 3 dimensional levels of m. w. is analyzed by applying the lean-type wall design method. The stone pile-up techniques depend on the skill of cutting out stones, pile-up methods and filling condition of stones.
The stability reducing coeff. fn for these factors are introduced. The m. w. coeff. F which is obtained by multiplying these reducing coeff. fn, is expected to indicate the stability of m. w..
