1,721,027 research outputs found
A cura di Calogero Vinci - Rassegna giusprudenzale della Cassazione.
No full textBousquet G.-H. A cura di Calogero Vinci - Rassegna giusprudenzale della Cassazione.. In: Revue économique, volume 25, n°5, 1974. p. 885
Historic additional stories in the cultural heritage of Palermo: critical analysis for the purpose of structural and energy improvement
Full text linkThis paper analyses construction features and performances of additional storeys in historic buildings. The recurring characteristics of these historic accretions are investigated by focusing on the cultural heritage of Palermo, where the practice of extending buildings by raising new levels was widespread both in monumental and vernacular architecture, in public and private constructions. The performance deficiencies of additional storeys are examined in terms of structural safety, thermal comfort and building energy demand. On this basis, the utility of mapping these structures, their morphology and their location in the urban fabric is discussed
I balconi in travertino di Alcamo. Analisi e conoscenza per un recupero compatibile
No full textThis study analyses the construction techniques of balconies made of Travertine in the historical building of Alcamo, a small town in western Sicily. The study, supported by tests of mechanical characterisation of the travertine, provides the first supporting information for the proposal of intervention methods for compatible consolidation and restoration. After analysing the general characteristics of balconies in historical construction in the Mediterranean area, the individual components of the balconies of Alcamo - the soils and corbels - were analysed from a geometric-constructive and static point of view. In the second part of the paper, the results of the laboratory mechanical tests performed on the travertine are analysed, and some considerations are proposed based on the comparison between the results of the verification performed with the finite element method (FEM) and the failures found in real cases. The main purpose of this study is to provide the first data to contribute to the definition of good practices for a compatible recovery of these fragile architectural elements for which indiscriminate demolition is increasingly resorted to in the event of instability
Image segmentation for the automatic recognition of historic masonry walls
No full textThis study approaches the potential of image recognition based on artificial
intelligence to automate the construction analysis of stone walls, as support to the
typological study of historic masonry. Santo Stefano di Camastra, Sicily, was used as
case study. A set of 60 photos, each representing one of the visible walls in the historic
centre, were assessed in six aspects of image quality and three aspects of wall
complexity. Each photo was segmented through the open access tool Meta AI and a
score was assigned to the quality of segmentation. The association was analyzed
between the quality of segmentation and the variables on image quality and wall
complexity, considered individually or in linear combinations. Somers’D index was
used. The study suggests that image quality is partially associated with the result of
automatic segmentation through the presence of other building components and
external elements in the picture, and the focal distance of photography. Association
was not observed between segmentation and construction features of masonry, while
the relationship is strong with features describing the appearance of wall surface
MURATURE STORICHE, UN’ANALISI FEM PER VALUTARNE LE PROPRIETÀ TERMOFISICHE
No full textThe crisis related to COVID-19 pandemic and to the Ukrainian conflict led to increase the en- ergetic poverty and social inequalities. The European building energetic sector has a relevant weight in the primary energy demand. Among the European strategies, the Renovation Wave plan aims to encourage the process of restoring the built heritage, in a sustainable way for all EU member countries. Considering the economic difficulties and the European strategic direc- tion for the energetic requalification of buildings, the risk of operate on the historical building heritage with interventions incompatible with the conservation of needs is not negligible. This work has focused attention, in particular, on the recovery of historical buildings and on masonry, in conformity with the energetic aspects. Four different geometric masonry layouts were mod- eled, which represent the most recurring ones, with the aim of evaluating their thermo-physical performance. The geometric differences are found in single-layer, two-layers or sack masonry, in which there are “diatoni” or “semi-diatoni” ashlars. The evaluation of the energetic performance of masonry was carried out through 3D finite elements models (FEM Finite-elements-modeling) implemented within the software Comsol Multiphysics v. 5.6. In addition, the typical effect of thermal bridges that can be generated in the presence of passing construction elements, such as “diatono” or “semi-diatono” ashlars, was studied. The presence of these constructive elements is fundamental for the structural aspects, like the best distribution of the structural loads. However, according to an approach that also takes into account the energetic performances, it was showed that these constructive elements determine a favorable condition for heat transfer. Consequently, it’s necessary to plan a series of recovery interventions that are compatible with the needs of the construction, then carrying out interventions suitable for each condition, and, finally, considering the energetic contribution of the masonry
Nature-based solutions as climate change adaptation measures: lessons and best-practices from European cities
No full textClimate change is the greatest challenge facing our planet. Heavy overbuilding and the associated sealing of soils in recent decades have lim ited the availability of green spaces in cities, the fundamental importance of which is now recognised. The urgent need to create more green spaces and areas in the built environment draws attention to nature-based solutions configured as preferred adaptation solutions that enable the built environ ment to cope with the effects of climate change.
The focus of this study is on the impact of climate change on urban are as, which are recognised as a major contributor to greenhouse gas emissions and a significant proportion of energy consumption. After analysing the concept of Nature-based Solutions (NbS) with particular reference to green and blue strategies, this study proposes an investigation of the application of
NbS in different European cities in order to define a framework that out lines the phases for the implementation of NbS in urban areas and promotes climate adaptation. This framework consists of five phases, ranging from the definition of the challenge to the monitoring of the proposed solutions, to the phases in which the application circuits, the scale of application and
the associated measures to be implemented are defined.
Although cities are defined as complex systems responsible for high en ergy consumption, this study highlights the key role of nature-based solu tions from an environmental, social, and economic perspective, configured as best practices and preferred solutions to test and outline city-level adap tation strategies whose replicability is essential for orienting urban envi ronments towards a sustainable ecological transition. The inclusion of NbS in planning enables the creation of sustainable cities and communities in line with current European policies to achieve climate neutrality and sus tainable development goals
Philological HBIM for Knowledge, Management, and Valorisation of the Industrialized Building: The Case of Prefabricated Large Panels Systems (1950–80)
No full textThe paper presents the results of an ongoing research relating to the application of HBIM for the knowledge and management of industrialized buildings of the second half of the Twentieth century (1950–1980). The main aim of the study is to advance the HBIM approaches dedicated to the heritage of contemporary buildings, setting up a methodological framework that supports the technical knowledge and the management of the existing building stock, focusing on the novel use of the BIM model as a tool to collect, organize, classify, and access, the archival documents and the historical survey-derived data. The methodology concerns three phases, following the different HBIM roles as a knowledge, systematization, and representation tool, within the historical-technical analyses: (1) design of the CDE and classification of the documentary sources; (2) 3D crossreference and verifications of the documents-derived data; (3) production of opendata and interactive visualizations. Theworkflowrelied on modelling strategies for an effective exploitation of the native functionalities of the BIM Authoring commercial platforms and the IFC open standards, with the aim to extend the proposed approach to the professional communities for the management of the Twentieth century building heritage. The methodological framework is applied to the digitalization of the noteworthy Camus system, a French patent used in the Gratosoglio district (Milan) in the 1960s. Such system is a benchmark of reinforced concrete large panels prefab systems and it has a large-scale and world-wide diffusion
Damage to technical elements of the building envelope in the typical multi-risk scenario of the Campi Flegrei area.
No full textDamage to technical elements of the building envelope can have unacceptable consequences for the functionality and safety of a building. Recent interest in such damage is mostly linked to intensive events, neglecting the study of extensive events. Despite the known connection between technical envelope vulnerability and building functionality and safety, systematic vulnerability studies are missing. This study proposes investigation sheets for damaged technical elements as preliminary tools for assessing envelope vulnerability and hazardous events, related to this vulnerability, in urban areas. The study focuses on frequent but non-catastrophic hazards, typical of the Campi Flegrei area, where recent bradyseismic activity has renewed national interest and necessitated risk prevention measures. The research methodology involves three phases: identification of
the most vulnerable technical elements, comparison with bibliographic data, and direct application in a multi-risk scenario, specifically bradyseismic activity combined with different environmental exposures. Analysis reveals balconies and cornices
as the most frequently damaged elements, particularly vulnerable to bradyseismic activity and environmental exposure. Associations between observed damage and hazard characteristics will support the identification of the degradation pattern of technical elements which is needed to analyse their vulnerability and to assess the risk onto the urban system associate with it
Energy Refurbishment of Hotels in Greece and Italy: The Validation of S.O.L.E.H. Expeditive Tool.
No full textThe hotels building stock allows to investigatemany operative features to improve the effectiveness of energy refurbishment process. S.O.L.E.H. (Sustainable Operation Low-cost Energy for Hotels) project proposed an expeditive tool to facilitate the refurbishment process of hotels in Mediterranean countries, making the hotel building stock more efficient and the tourism industry more competitive.
As every simplified energy tool, it must be checked about the consumption and energy saving data, both concerning the in-put and out-put, to validate the tool itself. The paper presents one of the calculation checks carried out by a real case study in Alexandroupolis (Evros, Greece) underling the gap between the data of tool’s simulation and the complete one done with EnergyPlus+®. The work is part of an ongoing research between Italy and Greece aiming to set shared practices and tool to improve the refurbishment process in Mediterranean countries
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