Integrated Survey to Extract Date for Structural Investigations

Abstract

This paper presents some results of a integrated survey, aimed to 3D modeling and the subsequent representation of the collapse of part of a historical building. The survey of a building in Salerno it has been made, built in Art Nouveau style, has the name taken from “Società Anonima per l'Edilizia”, which undertook its construction. The results have been a support characterized by metric valence for structural engineers who have examined the stability of the structure and determined the cause of the collapse. The collapse occurred during the night and covered the South-West corner of the building. However, there were no neither victims nor injured because the zone of the building housed the living room or rather the kitchen, and not the bedrooms. For this case study a integrated survey it has been conducted; in particular, laser scanning, topographical and terrestrial photogrammetry techniques in order to obtain the 3D model of buildings, plans and prospects and the particular of the collapsed area have been adopted. The experimental algorithm, developed by authors, in order to obtain 2D representation of whole building and the area of collapse, it has been used. The results has been an aid for the structural engineers. Of considerable support to the above analyzes were both the topographical survey of the collapse site, that the laboratory tests, some of them inferred by three-dimensional metric knowledge and by graphical representation provided.