Abstract
The architecture design today has new expressive features due to the parametric and computational modelling software, which greatly amplify the potential of language. This condition makes it possible to generate customised elements and systems through a process of cyber-physical interaction between design and architectural production. As well as the geometric constraints, dictated by manufacturing and assembly processes of materials, they can be incorporated in the generative design codes. The article examines the possibility to also include the main conditions that enable the selective disassembly of the elements and their reuse at the end of life, avoiding the generation of parts that are not remanufacturable or reusable.
Highlights
Introduction and objectivesThe integrated digital design allows the construction systems to be described in great detail with all their parameters in terms of geometry, material and external load, reconstructing their mechanical and functional behaviour
Considering the need to minimise the consumption and use of non-renewable resources in the industrial production and construction phase and in the entire life cycle of the building, this contribution examines the use of generative codes – nowadays used almost exclusively to control the manufacturing and assembly processes of customised systems – to figure out different reversibility thresholds of the construction, as well as to constrain the building components to geometric, performative specifications that are compatible with potential remanufacturing and reuse processes
The main barriers to the spread of reuse processes are represented by: the regulatory gap which still does not take into account the marking for second-life materials; the waste regulation itself, which does not contemplate virtuous alternative processes rather than consolidated recycling chains, which cannot always recycle the materials due to treatments or contaminations of the basic material; high reverse-logistics costs and scarce capability to supply the market and production chains promptly, generating uncertainty; and last but not least, the problems strictly connected to the workability of the recovered materials
Summary
5.1 Controllo geometrico dei bordi 5.2 Gestione tipologie di connessione 5.3 Verifica accessibilità alle connessioni 5.4 Controllo morfologia dei giunti 5.5 Gestione delle tolleranze. Some of them are based exclusively on qualitative parameters (Durmisevic, 2006; Langston et al, 2008), while the possibility of a future reuse of components has only recently been contemplated (Conejos, 2013; Akinade et al, 2015; Sanchez and Haas, 2020) Analysing these methods, the advantage of developing a digital disassembly model, organised according to relational rules that can be implemented in the most common BIM software, is evident. Digital assessment (BIM 6D) of the relational model for an assembly prototype, strip out cost estimation and life cycle assessment parameterised to the components’ end of life (demolition vs disassembly), source: Sanchez, Haas, 2020 demolizione selettiva e nel recupero dei componenti – hanno avviato di recente un servizio di Urban Mining Scan per gli immobili esistenti (Devlieger, 2019), volto a quantificare e qualificare il potenziale di riuso dei materiali all’interno di anagrafiche digitali (Material Passport). Le geometrie a doppio incastro risultano meno adatte al disassemblaggio, perché gli elementi possono essere smontati previa demolizione gli elementi collegati (Fig. 5)
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