HERITAGE AND LAND GOVERNANCE: THE USE OF 3D SURVEYING TECHNIQUES FOR THE CULTURAL HERITAGE CONSERVATION

Le tecniche di rilevamento nel campo dei beni culturali sono in continua e costante evoluzione. Il presente contributo vuole descrivere come l’autore ha vissuto nella propria attività accademica ed in seguito professionale, all’interno di una azienda spin off dell’Università di Brescia, lo sviluppo di tali tecniche e le problematiche che l’evoluzione tecnologica introduce.Survey techniques in the cultural heritage field are always in progress. This paper intends to describe how the author is experimenting with their development and the critical aspects of the evolution technology in his own academic activity and later also in the professional one, inside the spin-off company of the University of Brescia

La tecnologia HERON per il Monitoraggio dello stato avanzamento lavori strutture verticali

L'articolo introduce alla tecnologia di mappatura mobile SLAM, eseguita tramite la il sistema HERON a doppia testa lidar e dotato di camera sferica. Tale strumentazione, applicata in cantiere, permette di effettuare un real time change detection della realtà ovvero di mostrare in tempo reale le differenze tra costuito e progetto. Tale processo può essere anche realizzato, in post processamento, in modo da effettuare un monitoraggio dello stato di avanzamento di cantiere. In particolare vengono descritte le esperienze realizzate presso il grattacielo Gioia 22 a Milano

Tecniche di rilievo 3D in territori complessi con zone ad elevato rischio idrogeologico. Condivisione in rete di dataset ad alta risoluzione (derivati da dati LiDAR)

Uno dei principali effetti indotti dai cambiamenti climatici osservabili nel territorio nazionale è la localizzazione di fenomeni meteorologici di eccezionale intensità in aree ristrette. Accade che disastri naturali (quali alluvioni e inondazioni) stiano assumendo in molte zone d’Italia – ma non solo – una periodicità assai più elevata rispetto al passato. Il contributo descrive una prima applicazione di condivisione in rete di dataset ad alta risoluzione (derivati da dati LiDAR) impiegata in aree di studio della Regione Veneto caratterizzate da un significativo rischio idrogeologico, nonché dai conseguenti dissesti territoriali. Nello specifico la ricerca propone una nuova modalità di gestione di dati 3D (nuvole di punti, mesh …), di trasmissione e di visualizzazione degli stessi via internet. Si ritiene che tale tecnologia possa essere considerata uno strumento di rapido supporto alle decisioni e al tempo stesso di archiviazione e consultazione ex post dei dati raccolti in fase critica. Il valore aggiunto desumibile dal primo caso test delle provincie di Verona e Vicenza (cfr. esondazioni dei Torrenti Tramigna, Alpone, Aldegà e Chiampo del 2010) risiede nella rapidità di integrazione tra il rilievo 3D dell’area oggetto dell’evento calamitoso e i diversi livelli informativi disponibili.One of the main consequences of climate changes in Italy is the occurrence of meteorological phenomena of outstanding intensity in small areas. In many of them natural disasters (floods and flash floods, for instance) are becoming more frequent. The paper aims at describing a first attempt to apply a high resolution dataset web sharing tool (using LiDAR data) to case study areas located in the Veneto region. Such areas are characterized by a high hydrogeological risk and by territorial instability. Our research suggests a new way of managing 3D data (point clouds, mesh..) as well as of transmitting and visualizing them via internet. Such a technology represents a flexible tool allowing to rapidly support decisions and store/consult ex-post data obtained in crucial phases of the phenomena studied. Our research provides a general and enabling methodology for a rapid integration of 3D surveys of areas involved in disasters (in our case the one hit by the autumn 2010 floods caused by the Torrenti Tramigna, Alpone, Aldegà and Chiampo) and different available layers. The added value of our proposal, gathered from the first tests carried out on the Provinces of Verona and Vicenza, lies in this and in the quick interrogation of data and interactions

TRACKING MEP INSTALLATION WORKS

Previous research has shown that “Scan-vs-BIM” systems are powerful to provide valuable information for tracking structural works (progress, quality, safety). However, the transferability of this capability to other construction areas such as MEP works has not been assessed so far. Comparatively, the construction of MEP systems, in particular pipes and ducts, tends to be more flexible with respect to the positioning of individual components, so that Scan-vs-BIM systems could be defeated when tracking MEP installation works. This paper presents recent results on the feasibility and performance of using a Scan-vs-BIM system to track MEP works. The approach followed is presented and then tested with two real-life challenging case studies were conducted simultaneously but totally independently in Canada and Italy. The results show that, as expected, pipes and ducts tend to be more loosely positioned than structural elements leading to a poorer performance of the Scan-vs-BIM system. Nonetheless, it appears that the system works well to assess the level of conformance of site installation works, providing valuable information for estimating emerging performance metrics like “percent built as-designed”. In addition, the proposed system could also be useful to accelerate and thus reduce the cost of delivering as-built BIM models for in the case of new builds

THE PHYSICAL EVOLUTION OF AND THE ANTHROPIC IMPACT ON A GLACIER SUBJECTED TO A HIGH INFLUX OF TOURISTS: VEDRETTA PlANA GLACIER (ITALIAN ALPS)

Vedretta Pi an a Glacier is situated in Valle di Trafoi, near Stelvio P ass (Italian Alps ). Summer skiing has been a popular sport on this glacier for over seventy yea rs. On this glacier a stu dy for determining its recent evolut ion was carried out by means of a quantitative, detailed an alysis (G P S and GPR surveys) carried out in 1999 and in 2000 . Th e data elaboration shows th at the loss of ice and snow during the September 1999 - September 2000 period was equal to 938.920 rn'. The specific net ma ss balance for th e 1999/2000 hydrological year thus amounts to - 2.138 mm. The glacier's mean thickness proved to be equal to 71 m. Th e glacier volume proved to be equal to 72.500 .000 m' over a surface area of about 1 km ' . The survival time of the glacier is valu ed of about 35 yea rs (KEY W ORDS: Glaciers , Tourism, Vedretta Pi an a, Alps

San Carlo Basilica in Rome: the results of the deformation measurements.

In this article it is briefly described the control network of the "San Carlo al Corso" Basilica in Rome. This network has the task to observe the movements and the deformations of the structure, using both automatic and non-automatic instruments. The article presents the main characteristics of the automatic instruments installed, the procedures used to define the position, and the number of the control points and also some results of the deformations control

Integrated Laser Scanner Techniques to Produce High-Resolution DTM of Vegetated Territory

The paper presents the first part of a research project concerning the creation of 3D terrain models useful to understand landslide movements. Thus, it illustrates the creation process of a multi-source high-resolution Digital Terrain Model (DTM) in very dense vegetated areas obtained by integrating 3D data coming from three sources, starting from long and medium-range Terrestrial Laser Scanner up to a Backpack Indoor Mobile Mapping System. The point clouds are georeferenced by means of RKT GNSS points and automatically filtered using a Cloth Simulation Filter algorithm to separate points belonging to the ground. Those points are interpolated to produce the DTMs which are then mosaicked to obtain a unique multi-resolution DTM that plays a crucial role in the detection and identification of specific geological features otherwise visible. Standard deviation of residuals of the DTM varies from 0.105 m to 0.176 m for Z coordinate, from 0.065 m to 0.300 m for X and from 0.034 m to 0.175 m for Y. The area under investigation belongs to the Municipality of Piuro (SO) and includes both the town and surrounding valley. It was affected by a dramatic landslide in 1618 that destroyed the entire village. Numerous challenges have been faced, caused both by the characteristics of the area and the processed data. The complexity of the case study turns out to be an excellent test bench for the employed technologies, providing the opportunity to precisely identify the needed direction to obtain future promising results