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What is Crack Pattern Survey

Chapter 1
Handbook of Research on Seismic Assessment and Rehabilitation of Historic Structures
It is a complete survey of the structural and physical damages that can help in understanding the vulnerable points of the structure and also the possible future mechanisms. All cracks should be clearly represented on the buildings elevation drawings, with their correct location and shape. The crack pattern survey must be carried out in order to interpret the type of damage and its causes. Damages which are frequently attributed to the earthquake can have a different nature and can be caused by excessive dead load or soil settlements, or simply to lack of maintenance.
Published in Chapter:
Seismic Vulnerability of Historic Centers: A Methodology to Study the Vulnerability Assessment of Masonry Building Typologies in Seismic Area
Luigia Binda (Politecnico di Milano, Italy) and Giuliana Cardani (Politecnico di Milano, Italy)
Copyright: © 2015 |Pages: 29
DOI: 10.4018/978-1-4666-8286-3.ch001
Abstract
A methodology of investigation and diagnosis on the built patrimony of historic centres in seismic areas is presented with the aim of collecting an extensive knowledge on the structural typologies and behaviour of historic masonry buildings. This investigation is also the base for the prevention and/or repair of damages caused by earthquakes. Small historic centres or residential buildings in larger centres have been considered for long time as “minor architecture”, but they are meaningful testimonies of the local cultural heritage and express the evolution of a society and of its cultural identity. The results of the investigation carried out on different Italian historic centers, allowed also a critical review of the reliability of the analytical models and of the effectiveness of the repair techniques applied in the past decades. The guidelines emerging from the research results are here presented. A “minimal” diagnostic investigation program is also suggested, in order to support the designers in their projects and to set up appropriate mathematical models to study the vulnerability of the structures.
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