No abstract

The definition of preliminary project cost estimates is one of the key aspects of investments in the real estate field. This kind of estimates plays a fundamental role in the decision-making process defining whether to proceed with the project. However, the definition of accurate estimates in preliminary phases is still an open issue and several researches have been developed to improve the performance of the process. Most of the researches are focused on the introduction of digital methods that are able to improve performance both in terms of precision and effort reduction. This paper is focused on the comparison between two traditional estimating methods used in the preliminary project phase and a digital method based on Building Information Modeling processes and instruments, to understand the impact of digital practices on the traditional estimating processes.

This paper summarizes the main results of the study, diagnostics, and restorations conducted and applied to a 16th century wall painting (a portion of the frieze and the Riario coat of arm) in Palazzo Gallo (Bagnaia, Viterbo district—central Italy) recently concluded, which was also the subject of a master’s degree thesis in Conservation and Restoration of Cultural Heritage at the University of Tuscia, Viterbo. Innovative imaging techniques were used for the first time on a wall painting on-site: hypercolorimetric multispectral imaging (HMI) and pulse-compression thermography (PuCT), combined with more traditional analysis such as X-ray fluorescence spectroscopy, Fourier transform infrared spectroscopy, and cross-section investigation. HMI allowed for mapping the conservation status before and after the removal of the scialbo layer that covered the original paintings. It also allowed different areas of the painting to be compared and for verifying the effectiveness of the cleaning. PuCT enabled the detection of cracks and discontinuities in the ground layers and to evaluate the depth of such anomalies, giving valuable support in the consolidation step. Moreover, passive thermography was used to monitor the penetration level of a hydraulic mortar in real time, a technique that was greatly helpful for verifying the successful fill and consolidation of voids beneath the pictorial layer. Overall, the multi-technique approach reported here was of considerable assistance for restoration of the mentioned artwork, the result of which has also been documented.

This paper summarizes the main results of the study, restoration and diagnostics applied to the 16 th century wall painting (a portion of the frieze and the Riario coat of arms) in Palazzo Gallo (Bagnaia, Viterbo -Central Italy) recently concluded and object of a master's degree work in Conservation and Restoration of Cultural Heritage. Innovative imaging techniques were used for the first time on a wall painting on-site: Hypercolorimetric Multispectral Imaging (HMI) and Pulse-compression Thermography (PuCT), combined with more traditional analysis. Multispectral imaging allowed for mapping the conservation status before and after the removal of the scialbo layer that covered the original paintings. It also allowed to compare between different areas of the painting and to verify the effectiveness of the cleaning. PuCT allowed to detect cracks and discontinuities in the ground layers and to evaluate the depth of such anomalies giving a valuable support in the consolidation step.

No abstract