The author thanks Keiichi Miyatani for his discussion, and the answers are as follows;
1, Seismic reinforcement of important cultural properties is divided into alteration or non-alteration. Medical restoration means the status quo.
2, Seismic reinforcement of Yamagata prefectural assembly hall was connected with the concept of Venice charter.
3, This paper focused on the modern reinforced concrete architectures in Japan. Their seismic reinforcement prevail inside because modern buildings give emphasis to maintain exterior.