Nondestructive testing plays an important role in identifying and detection of internal defects and cracks in many industrial applications such as concrete structures, pavements, and metal testing. Nondestructive testing of concrete allows the inspection of larger areas of concrete members at lesser cost than coring and provides more information than visual inspection. The deterioration of reinforced concrete structure such as elevated service reservoir is major problem in many countries of the world. Many of the existing water tanks in service today are inadequate to need the present water demand. To ensure safe durable service and selecting the most appropriate repair strategy it is essential to perform in situ inspection for a distressed concrete structure. The main objective of present work is to propose the developed systematic investigation for metrology and a condition ranking procedure based on Analytical hierarchy process (AHP). DER rating technique is used to find out the condition ranking of elevated service reservoir in Karad region in Maharashtra. The ranking assessment for elevated service reservoir structure has been carried our using different Non-destructive test methods like surface hardness, ultrasonic pulse velocity test, half cell potential methods and cover depth measure.
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