Abstract
Public residential buildings make a large portion of the European existing stock and they quite often require deep renovation interventions. A methodology for setting priorities and targeting regeneration investments should be defined relying on the increasing use of building information modelling (BIM) tools even for managing existing buildings. The aim of this paper is to integrate the evaluation process into BIM Revit software developing a specific plug-in, a Decision support system (DSS) that will help to identify the most appropriate flats to be transformed. It is based on measuring three indicators: Usability, Fragmentation, and Constructive Modifiability. Through their weighted average it is possible to obtain a final transformability score. The proposed approach has been tested on a case study chosen within the 1st P.E.E.P. (1st public plan for council and affordable housing) that has been approved in Rome in 1964. The results demonstrate that the transformability of apartments is related mainly to the Constructive Modifiability indicator and buildings with reinforced concrete frames show higher scores. A widespread application of such a methodology on large real estate portfolio may lead stakeholders involved in housing management investments in clear choices related to maintenance of buildings.
Highlights
Existing buildings or districts can be an important resource as a tangible symbol of a community and because their renovation is crucial for a smart growth approach
In the context of decision support systems, Revit has been used for the generation of optimal renovation scenarios [56] that are based on five criteria: energy consumption, investment cost, thermal indoor comfort, aesthetic and spatial quality
At the operational phase, which is of primary interest for the scope of this paper, building information modelling (BIM) processes ensure qualitative and quantitative data and information that can support decision making procedures, especially when models are integrated with evaluation tools and actual/residual building performances
Summary
Existing buildings or districts can be an important resource as a tangible symbol of a community and because their renovation is crucial for a smart growth approach. Repurposing old buildings— those that are vacant or in very bad condition—reduces the consumption of land, energy, materials, and financial resources. Given these assumptions and taking into consideration the increasing use of BIM Residential buildings in Italy account for 40% of energy consumption and 36% of emissions [1,2] of the existing building stock. In Italy, around 60% of buildings have been built before the 1970s [4], before the first law on the control of energy consumption for thermal use in buildings was approved
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