Thickness Measurement of Masonry Wall Using Impact Echo Technique

Masonry is one of the most durable construction material. Ancient masonry structures can provide hundreds of years of wonderful performance with limited maintenance. Without any doubt, preservation of those structures is more important because they are the wealth of our nation. Heritage buildings require particular surveillance in structural assessment, because of the small amount of knowledge of the inner geometry, constructive materials and state of conservation. When nondestructive testing is used to evaluate a structure, many decisions must be made about the number and location of tests. Cost constraints work to minimize the number of tests while the desire to accurately assess the state of the structure argues for the maximum number. By using the non destructive testing (NDT) techniques, structure can be tested many times through the complete life cycle to ensure its continued integrity. The present study aims at applicability of impact echo in the measurement of thickness in masonry wall.