From point cloud to HBIM: an integrated workflow for 3D reconstruction of heritage building with model accuracy evaluation

Modern society is now facing significant difficulties in attempting to preserve its architectural heritage. Numerous challenges arise consequently when it comes to documentation, preservation and restoration. Fortunately, new perspectives on architectural heritage are emerging owing to the rapid development of digitalization. Therefore, this presents new challenges for architects, restorers and specialists. Additionally, this has changed the way they approach the study of existing heritage, changing from conventional 2D drawings in response to the increasing requirement for 3D representations. Recently, Building Information Modelling for historic buildings (HBIM) has escalated as an emerging trend to interconnect geometrical and informational data. Currently, the latest 3D geomatics techniques based on 3D laser scanners with enhanced photogrammetry along with the continuous improvement in the BIM industry allow for an enhanced 3D digital reconstruction of historical and existing buildings. This research study aimed to develop an integrated workflow for the 3D digital reconstruction of heritage buildings starting from a point cloud. The Pieve of San Michele in Acerboli’s Church in Santarcangelo Di Romagna (6th century) served as the test bed. The point cloud was utilized as an essential referential to model the BIM geometry using Autodesk Revit® 2022. To validate the accuracy of the model, Deviation Analysis Method was employed using CloudCompare software to determine the degree of deviation between the HBIM model and the point cloud. The acquired findings showed a very promising outcome in the average distance between the HBIM model and the point cloud. The conducted approach in this study demonstrated the viability of producing a precise BIM geometry from point clouds.

Implementazione della metodologia lean nella realizzazione di una nuova linea di assemblaggio per bruciatori residenziali. il caso Riello.

L'elaborato proposto illustra l'implementazione della metodologia di Lean Manufacturing nella progettazione di una linea di assemblaggio destinata alla realizzazione di bruciatori residenziali. Vengono messi in evidenza i principali strumenti avanzati dal Toyota Production System e viene condotta un'analisi sull'influenza di tale approccio sulle maggiori aziende del settore Automotive degli ultimi decenni. Il caso di studio mette a confronto la linea di produzione in oggetto a monte e a valle dell'implementazione Lean presso l'azienda Riello S.p.a. di Legnago (VR). Si evidenziano i benefici apportati in termini di output produttivo giornaliero e riduzione dei costi di manodopera attraverso il miglioramento continuo del processo, l'adozione di nuovi utensili e l'applicazione del metodo Yamazumi nel ribilanciamento delle operazioni manuali.