A Data Processing Methodology to Analyze Construction and Demolition Dynamics in the European Metropolisof Lille, France – Buildings – 2023 : 13(10), 2671

Cédric Mpié Simba 1, Emmanuel Lemelin 1,* , Eric Masson 2 , Ahmed Senouci 3 and Walid Maherzi

1 Centre for Materials and Processes, IMT Nord Europe, Institut Mines-Télécom, University of Lille,F-59000 Lille, France; cedric.mpie-simba@imt-nord-europe.fr / 2 Territoires Villes Environnement Société—ULR 4477, University of Lille, F-59000 Lille, France;eric.masson@univ-lille.fr / 3 Department of Construction Management, College of Technology Building, 4730 Calhoun Road #300,Houston, TX 77204-4020, USA; asenouci@uh.edu / 4 ULR 4515—LGCgE—Laboratoire de Génie Civil et géo-Environnement, University of Lille,F-59000 Lille, France*

In the absence of industry data, organisms, and researchers leverage free and available data, specifically building and demolition permits. Geospatial processing is essential to integrate information from various files into a single GIS layer containing all relevant attributes for analysis. This article proposes a Geographic Information System (GIS) processing model aimed at monitoring construction and demolition dynamics in the European metropolis of Lille to quantify the urban production of mineral waste from buildings. Author methodology is based on that that the deposit potential can be analyzed using the observation of the spatiotemporal dynamics of building and demolition permits. The results demonstrate that combining construction and demolition (C&D) permits with other GIS layers allows us to produce data to quantify demolition surfaces per year in a given French area. The applicability of this methodology extends to all French regions, providing insights into the impact of crises on deconstruction activities and C&D waste generation. The study focuses on C&D French public data bases (French government and European Metropolis of Lille) attributed to the region (area) of the European Metropolis of Lille (MEL) between 2013 and 2022. Some data for 2022 were incomplete due to ongoing treatment, emphasizing the importance of understanding the dynamics of demolition rates or surfaces to identify data gaps or errors. Historical trajectories of C&D permits were quantified and analyzed, revealing over 21,000 permits granted from 2013 to 2022, categorized by site type (new construction, rehabilitations, prior declarations, and demolitions). Construction sites during this period covered approximately 3,345,948 m2, constituting 20% of the MEL’s building stock, while demolition sites amounted to 1,977,911 m2, equivalent to 5% of the total area of buildings in the metropolis. Employing GIS allowed for a spatial analysis, visualizing data by municipality, urban fabric, and year. The analysis highlighted territories with high and low potential for demolition and construction, as well as the most impacted urban fabrics and dynamic periods. The article discusses potential crisis impacts (e.g., COVID-19 or economic downturns) and the implications of incomplete data. Finally, the study demonstrates how these findings can be utilized to quantify C&D waste, leveraging GIS and the production rate calculation method (GRC).

Correspondence: emmanuel.lemelin@imt-nord-europe.fr (E.L.); walid.maherzi@imt-nord-europe.fr (W.M.)
Available from: https://doi.org/10.3390/buildings13102671

Regional demolition waste treatment capacity: a case studybased onthe identification of building selective deconstruction value chain’s stakeholders – European Journal of Social Impact and Circular Economy – 2023 : 4(3), 17-35.

Benjamin Cordrie1 and Emmanuel Lemelin 2*

1 Teacher-researcher, UniLaSalle Rennes –Ecole des métiers de l’environnement, Cyclann, Campus de Ker Lann, 35170 Bruz, France benjamin.cordrie@unilasalle.fr / 2 (Contact Author) Centre for Materials and Processes, IMT Nord Europe, Institut Mines-Télécom, University of Lille, F-59000 Lille, (France) Emmanuel.lemelin@imt-nord-europe.fr

The construction and demolition sector is a major contributor to waste generation, prompting European and national public authorities to adopt a waste management strategy based on circular economy (CE) principles. This strategy aims to promote thereuse and recycling of construction materials. A key prerequisite for this strategy is selective deconstruction, which allows for more efficient waste recovery by separating materials based on their treatment, reuse, recyclingand landfillpotential. Selective deconstruction involves a value chain that includes a range of stakeholders. This paper proposes a methodology for identifying the stakeholders involved in this value chain, from project owners to waste reclamation and recycling companies. This methodology is applied to the Lille European Metropolis(France–LEM) to estimate the Deconstruction Resources Treatment Capacityof this Region(DRTCR). Finally, this capacity is analysed in relation to the volume of resources generated by deconstruction, and to the objectives set by the circular economy strategy. Results demonstrate the importance ofdevelopingselective deconstruction at a local scale, and highlight the need for investment in this sectorand potential of sustainable business.

available from : https://doi.org/10.13135/2704-9906/7603