Good day, When doing the strengthening project, when we think that there is no static project of the current state of the building, can it be strengthened only with the concrete samples taken from the columns and curtains and the reinforcement and stirrup information from the columns (with this limited information)? -Don't we need to know the current situation of reinforcement in beams, floors and foundations in the current state of the building? In addition, if the foundation system of the structure is a continuous foundation, how should its connection with the foundation be made while strengthening the column? Should additional measures be taken? Can you provide information and suggestions about these issues?