We use various type of method for the civil structure inspection.
We collect the necessary data on site for using in the repair and retrofit of civil structure. In the inspection, in addition to the measure of cross section of structure, we use non destructive method of electromagnetic wave on the steel bar. For the measurement of diameter of bar, cover depth, we will break the concrete and measure it directly. Concrete core is needed when the compressive strength and static elasticity is required. We conduct the ultrasonic inspection in checking the thickness of steel or its coating.