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This study presents a high speed and precise inspection system that allows remote measurement of cracks using a non-prism total station incorporating a crack width ruler. Its applicability is shown with long and large bridges in Aomori Prefecture which leads Japan in bridge asset management. Through this study, not only have such technical issues as the hazard and time limitations in constructing temporary footholds been provided fundamental resolutions but also timely production of crack measurements, coordinate conversions and transformation into CAD drawings have become possible, to create a unique crack measurement and 3D database management system. キーワード: クラックスケール,光波測量器,ひび割れ幅,遠隔,座標化,3次元 CAD

Development and On Site Application of Inspection System Utilizing Non-prism Total Station Incorporating Crack Width Ruler