At the time of strengthening the most important parameter of its strength and durability depending upon the structures. In this experimental investigation of nondestructive testing (NDT) is to obtain properties of in place specimens without the destruction of the specimen or the structure and also the study the strength, corrosion, crack monitoring of structural elements and effect of reinforcement on the obtained results. These Non Destructive Instruments were then used to test the columns, beams and slabs. To calculate the strength and durability without destructing it, using Rebound Hammer and Ultrasonic pulse Velocity Test.