Interdisciplinary Study for Knowledge and Dating of the San Francesco Convent in Stampace, Cagliari – Italy (Xiii-Xxi Century)

Abstract

ABSTRACT:The Franciscan monastery, situated in the historic center of Cagliari (Sardinia), was founded in the thirteenth century, and transformed during the later centuries, up to the present day. The complexity of the case and the lack of objective data about its history has led us to carry out an interdisciplinary inquiry, in order to achieve a better knowledge of the building, preliminary for the drafting of a restoration project that respects all the signs that the time left. Starting from a deep examination of the indirect sources, turned out to be incomplete, the investigation continued with the execution of a survey with laser scanner and with the characterization of materials and related diseases of degradation. For the laser scanner survey we used a Faro Focus 3D, versatile and lightweight instrument that allows to perform scans with high speed point acquisition and high accuracy. For data elaboration we used the JRC 3D Reconstructor Software by the Gexcel srl. The characterization of the materials was performed on a reasoned sampling of natural and artificial materials, referring to masonry, interstitial mortars and plasters, carried out at strategic points, representative of the various phases of the construction. The samples were studied through mineralogical-petrographic methods with instrumental techniques for the analysis of component materials (OM, X-Ray diffraction). The data obtained, crossed with the results of the reconstruction of historical maps, of the examination of masonry techniques and of the analysis of pattern elements (arches, vaults, decorative elements), have facilitated stratigraphic analysis and helped to advance chronological reasoned hypothesis referring to the building. Besides, an interdisciplinary approach for the study of cultural heritage is very important to define a proper restoration and conservation intervention.

Integrated Study of the Beata Vergine Assunta Dome With Structure From Motion and Diagnostic Approaches

“…Therefore, the knowledge and protection of this patrimony from phenomena of obsolescence or ruination takes undoubtedly importance, especially in Italy where this inheritance is huge especially through the old town centres. For that reason, in the last few years, local governments led their interest to the integrated study of measuring and monitoring methods which, quickly and low cost, allow to define accurately the origins of the decay (Giannattasio et al, 2013). The most frequent protocol of monitoring and control can be classified as follows: assessment of the deformation and damage caused by natural calamities (e.g.…”

Tooteko: A Case Study of Augmented Reality for an Accessible Cultural Heritage. Digitization, 3d Printing and Sensors for an Audio-Tactile Experience

“…The achievement of the facade was reached with the Faro Focus 3D instrument, well known on the market (Balletti C. et al, 2013, Giannattasio et al, 2013 and characterized by a high speed of acquisition (up to 900.000points/sec) and high precision (± 2 mm between 10 and 25 m). The scan acquisition scheme recalls the monoscopic convergent photogrammetry scheme that requires a central station, one from the right and one from the left to minimize shadow zones (at least those with horizontal trend).…”

Geomatics and Archaeometric Investigations for the Sustainable Reuse of Ruins. The Santa Chiara Convent Ruin in Cagliari (Sardinia)

“…In particular, during the phase of restitution and editing, a more accurate study of the geometric characteristics of the vertical and horizontal structures was prepared. In fact, the aim of the TLS survey was not only to provide the graphic documentation to support the final project such as plans, sections and elevations but also to investigate possible anomalies or stratigraphies of the building (Giannattasio et al, 2013). For that reason, a series of graphic outputs were extracted from the convent's 3D model.…”

“…al., , 2017 and urban ruins (Fiorino, et. al., 2017;Giannattasio et. al., 2013), finds here its application on the urban ruined conventual complex of Santa Chiara, chosen for its strategic position into the historical core (Pilia, 2017).…”