The building structure construction in a period of last 25 years is become enlarge and become more important in development of India and to built infrastructure

The building structure construction in a period of last 25 years is become enlarge and become more important in development of India and to built infrastructure. Concrete structures construction taken place very rapidly due to the shifting of rural populations to urban areas is mainly due to urban biases in terms of development and economic opportunities. It has been observed in developing countries that urban residents have a better standard of living. In this study we focus on old structure which is constructed before, need special attention for maintenance, repair rehabilitation. The purpose of this Research to understand the important of monitoring the condition of old concrete building, durability and reliability of concrete structures. Therefore, effective methods for evaluating the dilapidated level are required to proposed repair technique. This leads to use combined development of several non destructive test methods. Ultrasonic pulse velocity test over any concrete structure reflects its conditions. Several physical and chemical properties of concrete structures significantly influence the density condition. Rebound hammer test provide compressive strength. Cover meter test provide cover details as well as reinforcements details and all this test combine will determine the present condition of reinforced concrete structures and by optimization and analysis of all these tests jointly would be significant for planning maintenances and replacement of old buildings