In - place evaluation of masonry materials

An important element in the seismic retrofit of historic of older mansonry buildings is the accurate assessment of the structural condition of the building. Quantitative data is needed for engineering determination on the existing condition and for desing of any necessary retrofits. Non - destructive evaluation (NDE) methods adapted from concrete and rock technology or especially developed for masonry have been employed for condition assessment of existing brick masonry. Among These methods are ultrasonic and mechanical pulse tests, single and double flatjack tests and a bed - joint shear test. These NDE methods will be described and critiqued with respect to their application to historic masonry buildings, Examples of applications to historic and older masonry buildings will be given (AU)