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1. Climatic, Cultural, Behavioural and Technical Influences on the Indoor Environment Quality and Their Relevance for a Regenerative Future Regenerative future

Author

Haselsteiner, Edeltraud, Ferreira Silva, Marielle, Kordej-De Villa, Željka, Ahern, Jack, Editorial Board Member, Bolte, John, Editorial Board Member, Dawson, Richard J., Editorial Board Member, Devine-Wright, Patrick, Editorial Board Member, Farina, Almo, Editorial Board Member, Green, Ray, Editorial Board Member, Guntenspergen, Glenn R., Editorial Board Member, Haase, Dagmar, Editorial Board Member, Jenks, Mike, Editorial Board Member, Konijnendijk, Cecil C., Series Editor, Nassauer, Joan, Editorial Board Member, Pauleit, Stephan, Editorial Board Member, Pickett, Steward, Editorial Board Member, Vale, Robert, Editorial Board Member, Yeang, Ken, Editorial Board Member, Yokohari, Makoto, Editorial Board Member, Andreucci, Maria Beatrice, editor, Marvuglia, Antonino, editor, Baltov, Milen, editor, and Hansen, Preben, editor

Published
2021
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2. CIRCULAR ARCHITECTURE: MODELS AND STRATEGIES TO REUSE AND RECYCLE BUILDINGS

Author

Ferreira Silva, Marielle, HERTWECK, Dr Florian [superviser], MIESSEN, Dr Markus [president of the jury], SCHOLZEN, Dr Frank [member of the jury], WALDMANN, Dr Danièle [member of the jury], and KONSTANTINOU, Dr Thaleia [member of the jury]

Subjects
Architecture [C02] [Engineering, computing & technology], Circular architecture, Sustainable buildings, Architecture [C02] [Ingénierie, informatique & technologie], Ecological architecture
Abstract

How we design, construct and live in our houses as well as go to work can mitigate carbon dioxide (CO2) emissions and global climate change. Furthermore, the complex world we live in is in an ongoing transformation process. The housing shortage problem is increasing as the world population and cities are increasingly growing. Thereby, we must think of all the other issues that come along with population growth, such as increased demand for built space, mobility, expansion of cities into green areas, use of resources, and materials scarcity. Various projects from history have used alternatives to solve the problem of social housing, such as increasing density in cities through housing complexes, fast and low-cost constructions with prefabricated methods and materials, and modularisation systems. However, the current architecture is not designed to meet users’ future needs and reduce the environmental impact. A proposal to change this situation would be to go back to the beginning of architecture’s conception and to design it differently. In addition, nowadays, there is an increasing focus on moving towards sustainable and circular living spaces based on shared, adaptable and modular built environments to improve residents’ quality of life. For this reason, the main objective of this thesis is to study the potential of architecture that can reconfigure spatially and temporally, and produce alternative generic models to reuse and recycle architectural elements and spaces for functional flexibility through time. To approach the discussion, a documentary research methodology was applied to study the modular, prefabricated and ecological architectural typologies to address recyclability in buildings. The Atlas with case studies and architectural design strategies emerged from the analyses of projects from Durant to the 21st century. Furthermore, this thesis is a part of the research project Eco-Construction for Sustainable Development (ECON4SD), which is co-funded by the EU in partnership with the University of Luxembourg, and it presents three new generic building typologies. They are named according to their strong characteristics: Prototype 1 - Slab typology, a building designed as a concrete shelf structure in which timber housing units can be plugged in and out; Prototype 2 - Tower typology, a tower building with a flexible floor plan combining working and residential facilities with adjacent multi-purpose facilities; and Prototype 3 - Block typology, a structure characterised by the entire disassembly. The three new typologies combine modularity, prefabrication, flexibility and disassembly strategies to address the increasing demand for multi-use, reusable and resourceefficient housing units. The prototypes continually adapt to the occupants’ needs as the infrastructure incorporates repetition, exposed structure, central core, terrace, open floors, unfinished spaces, prefabrication, combined activities, and have reduced and different housing unit sizes, in which parts can be disassembled. They also densify the region that they are being implemented in. Moreover, the new circular typologies can offer more generous public and shared space for the occupants within the same building size as an ordinary building. The alternative design allows the reconversion of existing buildings or the reconstruction of the same buildings in other places reducing waste and increases its useful lifespan. Once the building is adapted and reused as much as possible, and the life cycle comes to an end, it can be disassembled, and the materials can be sorted for reusable or recyclable resources. The results demonstrate that circular architecture is feasible, realistic, adapts through time, increases material use, avoids unnecessary demolition, reduces construction waste and CO2 emissions and extends the useful life of the buildings.

Published
2022

3. Luxembourg 2050 - A Guide on Repairing Commercial Zones : Report Phase 3

Author

Hertweck, Florian [editor], Coignet, Philippe [editor], Gibon, Thomas [editor], Hitaj, Claudia [editor], Kessler, Sabine [editor], Molz, Markus [editor], Maric, Marija [editor], Schneider, Norry [editor], Schulz, Christian [editor], Becker, Tom, Gomes Costa, Diogo, Evrard, Estelle, Faber, Caroline, Ferreira Silva, Marielle, Floros, Christos, Hadji-Minaglou, Jean-Régis, Hansen, Joachim, Hesse, Markus, Jones, Catherine, Maric, Marija, Miessen, Markus, Popova, Simona Bozhidarova, Reckinger, Rachel, Schulz, Christian, Zarnescu, Diana Valentina, Viti, Francesco, Waldmann, Daniele, Zimmer, Céline, Benetto, Enrico, Braun, Christian, Daher, Elie, Gibon, Thomas, Hitaj, Claudia, Junk, Jürgen, Molz, Markus, Schneider, Norry, Zuang, Sophie, Kessler, Sabine, Coignet, Philippe, Monnier, Christelle, Hertweck, Florian [editor], Coignet, Philippe [editor], Gibon, Thomas [editor], Hitaj, Claudia [editor], Kessler, Sabine [editor], Molz, Markus [editor], Maric, Marija [editor], Schneider, Norry [editor], Schulz, Christian [editor], Becker, Tom, Gomes Costa, Diogo, Evrard, Estelle, Faber, Caroline, Ferreira Silva, Marielle, Floros, Christos, Hadji-Minaglou, Jean-Régis, Hansen, Joachim, Hesse, Markus, Jones, Catherine, Maric, Marija, Miessen, Markus, Popova, Simona Bozhidarova, Reckinger, Rachel, Schulz, Christian, Zarnescu, Diana Valentina, Viti, Francesco, Waldmann, Daniele, Zimmer, Céline, Benetto, Enrico, Braun, Christian, Daher, Elie, Gibon, Thomas, Hitaj, Claudia, Junk, Jürgen, Molz, Markus, Schneider, Norry, Zuang, Sophie, Kessler, Sabine, Coignet, Philippe, and Monnier, Christelle

Published
2022

4. Luxembourg 2050 - Prospects for a Regenerative City Landscape : Report Phase 2

Author

Hertweck, Florian [editor], Benetto, Enrico [editor], Coignet, Philippe [editor], Gibon, Thomas [editor], Hitaj, Claudia [editor], Kessler, Sabine [editor], Molz, Markus [editor], Maric, Marija [editor], Paris, Karine [editor], Schneider, Norry [editor], Schulz, Christian [editor], Abdullah, Aisha, Babic, Eldin, Becker, Tom, Cane, Francelle, Charitonidou, Marianna, Evrard, Estelle, Faber, Caroline, Ferreira Silva, Marielle, Hadji-Minaglou, Jean-Régis, Hansen, Joachim, Hesse, Markus, Katsikis, Nikolaos, König, Ariane, Maric, Marija, Miessen, Markus, Neupane, Saroj, Odenbreit, Christoph, Popova, Simona Bozhidarova, Reckinger, Rachel, Schulz, Christian, Swinnen, Peter, Viti, Francesco, Waldmann, Daniele, Weichold, Ivonne, Zimmer, Céline, Almenar, Javier Babi, Benetto, Enrico, Braun, Christian, Daher, Elie, Gibon, Thomas, Hitaj, Claudia, Junk, Jürgen, Kubicki, Sylvain, Leopold, Ulrich, Salazar, Lisette Cantu, Titeux, Nicolas, Fox, Katy, Molz, Markus, Paris, Karine, Schneider, Norry, Wengler, Jill, Kessler, Sabine, Coignet, Philipppe, de Gori, Lucie, Monnier, Christelle, Hertweck, Florian, Hertweck, Florian [editor], Benetto, Enrico [editor], Coignet, Philippe [editor], Gibon, Thomas [editor], Hitaj, Claudia [editor], Kessler, Sabine [editor], Molz, Markus [editor], Maric, Marija [editor], Paris, Karine [editor], Schneider, Norry [editor], Schulz, Christian [editor], Abdullah, Aisha, Babic, Eldin, Becker, Tom, Cane, Francelle, Charitonidou, Marianna, Evrard, Estelle, Faber, Caroline, Ferreira Silva, Marielle, Hadji-Minaglou, Jean-Régis, Hansen, Joachim, Hesse, Markus, Katsikis, Nikolaos, König, Ariane, Maric, Marija, Miessen, Markus, Neupane, Saroj, Odenbreit, Christoph, Popova, Simona Bozhidarova, Reckinger, Rachel, Schulz, Christian, Swinnen, Peter, Viti, Francesco, Waldmann, Daniele, Weichold, Ivonne, Zimmer, Céline, Almenar, Javier Babi, Benetto, Enrico, Braun, Christian, Daher, Elie, Gibon, Thomas, Hitaj, Claudia, Junk, Jürgen, Kubicki, Sylvain, Leopold, Ulrich, Salazar, Lisette Cantu, Titeux, Nicolas, Fox, Katy, Molz, Markus, Paris, Karine, Schneider, Norry, Wengler, Jill, Kessler, Sabine, Coignet, Philipppe, de Gori, Lucie, Monnier, Christelle, and Hertweck, Florian

Published
2021

5. Designing of the module envelope of a hybrid modular building to meet the passive house standards in Luxembourg

Author

Investissement pour la Croissance et l’emploi (2017-02-015-15) [sponsor], Rakotonjanahary, Tahiana Roland Michaël, Scholzen, Frank, Ferreira Silva, Marielle, Waldmann, Daniele, Investissement pour la Croissance et l’emploi (2017-02-015-15) [sponsor], Rakotonjanahary, Tahiana Roland Michaël, Scholzen, Frank, Ferreira Silva, Marielle, and Waldmann, Daniele

Abstract

To face the challenges of climate change, new buildings need to be further greener while being able to ensure a minimum comfort to the tenants. Nonetheless, extensibility and flexibility could be added to buildings. In this context, the architect jointly with the team of this research project have designed a hybrid modular construction called “slab building” which is composed of a permanent concrete structure and several removable wooden modules. A module offers 27m² of living space but larger housings can be realized by combining two up to four modules. The aim of this paper is to design the walls of the modules to meet the criteria of nZEB. The thicknesses of the studied thermal insulations, namely rock wool, wood wool, polyurethane and aerogel, have been determined in accordance with the passive house requirements in Luxembourg. The embodied energy of the building materials has also been considered in the designing of the modules. Steady state calculations revealed that a wall thickness of 40 cm, comprising 31cm of insulation is sufficient but according to the LCA outcomes, there is no environmental benefit in having the modules comply with the AAA energy class requirements at reasonable wall thicknesses.

Published
2020

6. Recyclable Architecture: Prefabricated and Recyclable Typologies

Author

European Regional Development Fund [sponsor], Ferreira Silva, Marielle, Jayasinghe, Laddu Bhagya, Waldmann, Danièle, Hertweck, Florian, European Regional Development Fund [sponsor], Ferreira Silva, Marielle, Jayasinghe, Laddu Bhagya, Waldmann, Danièle, and Hertweck, Florian

Abstract

Buildings are being demolished without taking into the account the waste generated, and the housing shortage problem is getting more critical as cities are growing and the demand for built space and the use of resources are increasing. Architectural projects have been using prefabrication and modular systems to solve these problems. However, there is an absence of structures that can be disassembled and reused when the structure’s life ran its course. This paper presents three building prototypes of new recyclable architectural typologies: (i) a Slab prototype designed as a shelf structure where wooden housing modules can be plugged in and out, (ii) a Tower prototype allowing for an easy change of layout and use of different floors and (iii) a Demountable prototype characterized by the entire demountability of the building. These typologies combine modularity, flexibility, and disassembling to address the increasing demands for multi-use, re-usable and resource-efficient constructions. Design, drawings, plans, and 3D models are developed, tested and analyzed as a part of the research. The results show that the implementation of the recyclable architectural concept at the first design stage is feasible and realistic, and ensures the adaptation through time, increases life span, usability and the material reusability, while avoiding demolition, which in turn reduces the construction waste and, consequently, the CO2 emissions.

Published
2020
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9. Post-occupancy evaluation of residential buildings in Luxembourgwith centralized and decentralized ventilation systems, focusing onindoor air quality (IAQ). Assessment by questionnaires and physicalmeasurements

Author

University of Luxembourg - UL [sponsor], Societé Nationale des Habitations à Bon Marché [sponsor], Federal University of Ouro Preto, Brasil [sponsor], Ferreira Silva, Marielle, Maas, Stefan, Artur de Souza, Henor, Pinto Gomes, Adriano, University of Luxembourg - UL [sponsor], Societé Nationale des Habitations à Bon Marché [sponsor], Federal University of Ouro Preto, Brasil [sponsor], Ferreira Silva, Marielle, Maas, Stefan, Artur de Souza, Henor, and Pinto Gomes, Adriano

Abstract

tComplete knowledge about habits of the occupants, including their opinions regarding ventilation sys-tems is an important condition for reducing the consumption of natural resources and improving indoorcomfort. In addition, uncomforted occupants tend to take measures to improve their situation, whichmay increase energy consumption. Advanced thermal models for buildings can perhaps predict interac-tions between the IAQ determinants, e.g. energy consumption, ventilation and comfort, but do not takeinto account the behavior of residents. By questionnaires and physical measurements this study evalu-ated dwellings equipped partly with centralized and partly with decentralized ventilation systems withheat recovery. This field study involved two post-occupied residential buildings situated in the city ofEsch-sur-Alzette, Luxembourg, during spring season 2015. Thus, both the physical measurements andquestionnaires were considered. The results obtained demonstrated that more than 80% of the residentswere satisfied and the perceived IAQ was judged “normal”, “good” or even “very good”. Furthermore,the measurements performed detected in some cases malfunction of ventilation devices, wherefore theoccupants were unable.

Published
2017

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