Towards a reliable prediction of the seismic behaviour of historic structures: the importance of structural survey

Abstract eng:
This paper illustrates the major significance of the identification and thorough study of the bearing system of historic structures. Using some examples, such as the behaviour of three-leaf masonry, the effect of materials used for deep re-jointing on the mechanical properties and the failure mode of masonry, as well as the effect of timber ties, the paper shows that the assessment of the actual state of a historic structure, as well as the prediction of its behaviour cannot be made in a reliable way, unless the bearing structure (including in-situ materials, construction type of masonry, interconnection of structural members) are identified, surveyed and investigated. Experimental and analytical results are presented to support the views expressed in this paper.

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