Il ruolo del rilievo integrato nell’interpretazione dell’edificio storico:Rocca di Sala a Pietrasanta (Lu)

• Greta Frosini ^[1] ; Luca Parodi ^[2] ; Angela Di Paola ^[3] ; Simone Vecchio ^[1] ; Sara Garuglieri ^[1] ; Beatrice Verona ^[1]
  1. [1] Red Studio Società di Ingegneria s.r.l,, Pietrasanta (LU), Italy
  2. [2] Archeol. Freelancer, Luni (SP), Italy
  3. [3] Red Studio Società di Ingegneria s.r.l,, Pietrasanta (LU), Italy, info@ redstudioingegneria.com, d Red Studio Società di Ingegneria s.r.l,, Pietrasanta (LU), Italy

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• Localización: FORTMED2023. Defensive architecture of the mediterranean : vol. XIII, XIV, XV / Marco Giorgio Bevilacqua (dir. congr.), Denise Ulivieri (aut.), 2023, ISBN 978-84-1396-129-3, págs. 1047-1054
• Idioma: italiano
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  • The subject of this paper is the architectural survey, realized with integrated methodology, of the Rocca di Sala fortress (Pietrasanta, Lucca, Italy) and the stratigraphic analysis of the elevations of the Palazzo Guinigi building, located inside the fortress. The task of surveying the fortress has been realized by us as a part of the ongoing feasibility study called “Restoration and reuse of the Rocca di Sala fortress and related access paths”, promoted by the Municipality of Pietrasanta. The medieval Rocca di Sala fortress (mentioned by historical sources since 1160 A.D.) is located on a promontory overlooking the old towncenter. Because of the position, the fortification can be reached by citizens with difficulty: therefore, the feasibility study aims at solving the problem of accessibility to the fortified perimeter. Due the complexity of this area, the project of new routes has requested the detailed knowledge of the characteristics of the promontory on which the fortress is; in fact, the hill has been modified over time by irregular paths, terraces and stretches of masonry, today partially underground and hidden by vegetation. The use of the 3D laser scanner technology, integrated with drones, made it possible to acquire plano-altimetric data, returning an accurate reading of both the hill and the entire fortified complex. The result of the relief campaign was a point cloud from which CAD drawings were obtained. These survey data were also the starting point of preliminary, archaeological investigations: in particular, a stratigraphic analysis of walls was carried out on the fifteenth-century Palazzo Guinigi using a photogrammetric relief by drone. Through the identification of various stratigraphic wall units (USM), it was possible to reconstruct the relative sequence of transformations of the façade of the building, allowing us to read part of the history of the fortress, directly on the monument.