There are many combinations of details in external walls. But they ought to be classified into limited combinations by qualitative analysis in details of external walls which are used in usual. The aim of this study is suggestion of all types of layerd compositior^ of external walls, according to systematic classiication, not only of actual types of combination, but of probable types in layerd composition of external walls systematicaly. In this study, it turned out that layerd composition of external walls can be classified to only a small number of types.
