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BIM is representing a shift in the traditional process of building delivery. Its adoption in US reached 71% in 2012 rising from 17% in 2007; moreover, Europe is going to adopt BIM for public contracting as promoted by the European Union Public Procurement Directive. Meanwhile, BIM is widely diffused in UK and Northern Europe, as it includes a more accurate documentation, less rework and shorter project timelines. The use of BIM to provide data for energy performance evaluation and sustainability assessment is defined Green BIM and pioneering design organizations are adopting this approach to enable integrated design, construction and maintenance towards Net Zero Energy buildings. Green BIM includes Building Energy Modelling dealing with project energy performance to identify options optimising building energy efficiency during the life cycle. By allowing revisions during the design phase, project teams can ensure that customers’ green ambitions beyond regulation compliance can be realized, together with technical and economic requirements. Thus, BIM can provide information to support the calculation of a number of credit points to define goal levels of sustainability related to rating systems. The aim of the paper is to investigate the opportunity to include the “green dimension” in BIM considering the more diffused rating systems.

Bioclimatic design strategies have been proposed for decades, on a qualitative basis, because a quantitative approach, ineludibly based on dynamic measurements or simulations, was too expansive and complex. If simulation considerably evolved, in the last years, in terms of speed, cost and diffusion of available tools, their utilization is still complicated by the managing a huge amount of hourly data. The passive behavior of a building, moreover, is not effortlessly synthetized: conditioned buildings may be easily compared just summing the hourly consumption of primary energy, while buildings with no thermal plant need more sophisticated statistical analyses because in these kind of buildings, it is particularly difficult to assess the effect thermal inertia. The existing school buildings stock has a strong need of energy renovation in accordance with Government vision of a community 24 hours a day use and consequently increasing the requirement of comfort conditions and energy consumption. Hence, a current school building heated and not cooled is considered as application field of the novel methodology and a classroom is used to test different energy retrofit solutions compared against a base-line, in terms of capacity to decrease the indoor air temperature variation. The analyzed simulations have been thus compared with ideal comfort conditions by an original analysis approach based on a visual tool as a support for designers in choices comparison to simply assess and visualize the performance of building technologies.

Operations and maintenance optimization are primary issues in Facility Management (FM). Moreover, the increased complexity of the digitized assets leads Facility Managers to the adoption of interdisciplinary metrics that are able to measure the peculiar dynamics of the asset-service system. The aim of this research concerns the development of a cross-domain Decision Support System (DSS) for maintenance optimization. The algorithm underpinning the DSS enables the maintenance optimization through a wiser allocation of economic resources. Therefore, the primary metric encompassed in the DSS is a revised version of the Facility Condition Index (FCI). This metric is combined with an index measuring the service life of the assets, one measuring the preference of the owner and another measuring the criticality of each component in the asset. The four indexes are combined to obtain a Maintenance Priority Index (MPI) that can be employed for maintenance budget allocation. The robustness of the DSS has been tested on an office building in Italy and provided good results. Despite the proposed algorithm could be included in a wider Asset Management system employing other metrics (e.g., financial), a good reliability in the measurement of cross-domain performance of buildings has been observed.

The following paragraphs refer to the images included in the poster, focusing on the management of the Building Information Modeling in relation to the field of Architecture, Built Environment, Construction Engineering.

La denominazione dei prodotti da costruzione, realizzata nell'ambito del progetto INNOVance, si pone come obiettivo l'agevolazione dello scambio di informazioni nel settore delle costruzioni, in maniera condivisa e non ambigua.

The naming process of construction products in INNOVance aims at facilitating the exchange of information in the construction industry, in a shared and unambiguous way.

Herein we present the results of an experimental activity to assess the degradation evolution and the loss in hygrothermal performances of External Thermal Insulation Composite Systems with rendering (ETICS). We exposed to accelerated ageing a sample of ETICS (with vinyl resin added base coat and acrylic thick finishing coat onto expanded polystyrene) applied to a masonry wall. The sample was aged with a repetition of two macro-cycles consisting of 125 UV cycles, 125 summer thermal shock cycles, 50 winter thermal shock and freeze–thaw cycles. To assess the hygrothermal performances over time, we measured the thermal transmittance and the time shift when exposed to sinusoidal forcing, while degradation was surveyed with photographs at fixed positions. We note that, with ageing, the studied building component offered higher water absorption capability and, thus, the thermal resistance presented a decreasing trend, while an increasing trend was observed for heat capacity, and time shift. With regard to the evolution of degradation, we observed a very strong influence of the thermal shock and dilatation-contraction events, resulting in blistering and deformation of the top coat.

Simulation and predictive models to verify the energy performance of new or retrofitted existing buildings strongly need tuning procedures based on energy monitoring in the operational phase, thus to avoid performance gap concerns. The value chain of an uninterrupted information for energy models based on design data (e.g. for new buildings) or on paper documents and additional surveys (e.g. for existing buildings) is crucial to perform a reliable design optioneering process. The present research applies a BIM2BEM approach to provide a public administration with a model for facility management (i.e. BIM) and a model to assess energy improvement and check the choices (i.e. BEM), as a pilot project on school buildings renovation. Schools are frequently out-of-date buildings in harsh need of structural and energy refurbishment and public administrations require consistent economic evaluations considering the payback time of the proposed solutions. Additionally, O&M (Operation & Maintenance) costs should be included in a life cycle evaluation of the buildings. Two schools with different layouts and configuration adopted as case studies to compare energy simulation to actual consumption. The workflow empowers the energy simulation results highlighting the accuracy of energy modelling in different situations and it introduces possible tuning strategies to decrease uncertainty.

Information management for Urban Facility Management (UFM) is a key enabler for a more sustainable built environment [1]. This paper presents a further development of a case study research concerning the implementation an innovative UFM service. The UFM process is enabled thanks to a robust data engineering approach and Information Technology (IT) tools, based on Database Management Systems (DBMS) and Geographical Information Systems (GIS). The proposed methodology allows to streamline the survey phase enhancing the UFM services already in place, according to a continuous improvement logic. The scope of the research concerns the implantation of effective facility management methodologies, [2] through the use of current Information Communication Technologies (ICTs). The case study research concerns a business district in San Donato Milanese, Italy. After two years since the kick-off of UFM service, thanks to data provided by the UFM company operating in this context, authors aim at presenting advantages of adopting the proposed methodology. Information available concerns cost, technical historic datasets and budget CAPEX data until 2019. This information is georeferenced and processed through geo-spatial algorithms, in order to obtain spatial analysis and representation for monitoring and improving the UFM service. In conclusion, it can be stated that the proposed approach can improve UFM process fostering information management among stakeholders and reducing operational expenditure.