About SASAKI TETSUYA
About technical standard
About earthwork
About earthquake-resistant design
About earthquake disaster
About inspection
About road
About performance evaluation
About rule
About structural design
About performance based design
About performance guideline
About seismic performance checking
About Great East Japan Earthquake
About road earthworks
About Road facilities and construction
About Standardization and standards of science and technology
About 技術基準
About 道路土工
About 指針
About 設計
About 耐震設計