FETIS by AUXAU atelier d’architecture

Feel the convenience and efficiency of prefabricated structure

Project Specs


非常感谢 AUXAU atelier d’architecture 对gooood的分享。
Appreciation towards AUXAU atelier d’architecture for providing the following description:


The project transforms and enlarges a small house located in the center of Brussels. The architectural intervention is limited to the addition of an extension at the rear facade that connects the living spaces to the existing small garden. The added volume is carved near the adjoining terraces for respect of the direct neighborhood and to limit the densification of the island interior.

▼项目概览,project preview © Severin Malaud


The small width of façade (less than 5 meters), the formal complexity of the volumetry developed, the limited timing of construction and the difficulties of access have oriented the architectural design towards the prefabrication of a steel shell. The ancestral methods of boilermaking, and modern welds, together with a thorough reflection of the structural capabilities of steel sheets have reduced to a strict minimum the amount of material required for the realization of the module.

▼从起居空间看向花园,view from the living space to the garden © Severin Malaud

▼从扩展区域看向空间内部,look inside the space from the extended area © Severin Malaud

▼从二楼阁楼空间看向花园,views from the second floor loft space to the garden © Severin Malaud



The new shell consists of a single sheet of steel 5mm thick. It is stiffened by a set of 5 stiffening gantries of 20mm thick for 100mm deep. This simple structure makes it possible to optimize the space generated by the intervention. The new envelope regulates all interior finishing details generated by the complex formal volumetry generated by the project. This allowed to integrate the staircase to the envelope to minimize the cost of implementation. With a simple painting, the steel becomes the visual signature and the inner skin of the project.

Finally, the physical characteristics of steel allow it to serve as a natural vapor barrier vis-à-vis the outer insulation that surrounds it completely. The principle of prefabrication allowed a significant saving of time for the implementation of the project: 3 weeks of manufacture in workshop, 1 week of painting, and only 3 hours for installation by mobile crane. Steel also has the advantage of being 100% recyclable, suggesting that within a few decades, the module can be extracted from the project and recycled in its entirety.

▼厨房,kitchen © Severin Malaud

▼从厨房看向楼梯与储物柜,view from the kitchen to the stairs and lockers © Severin Malaud

▼通往二楼的钢制楼梯,a steel staircase leads to the second floor © Severin Malaud 

▼阶梯细部,staircase detail © Severin Malaud

▼空间细部,details © Severin Malaud

▼卧室,bedroom © Severin Malaud

▼柜体细节,cabinet details © Severin Malaud

▼木制阶梯细部,wooden staircase detail © Severin Malaud

▼底层平面,ground floor plan © AUXAU atelier d’architecture

▼一层平面,first floor plan © AUXAU atelier d’architecture

▼正立面图,front elevation © AUXAU atelier d’architecture

▼后立面图,rear elevation © AUXAU atelier d’architecture

▼剖面图,section ©AUXAU atelier d’architecture

Customer: Private
Architect: AUXAU atelier d’architecture: www.auxau.com
Engineer: UTIL struktuurstudies: www.util.be
Steel structure: Melens-Dejardin Workshops: www.melensdejardin.be
Minimal windows: View – Less frame view: www.view.design
Zincs, Techniques & Finishes: JW BATIDECOR sprl
Sanded concrete: Passion concrete: www.passionbeton.com
Ironwork: Denis Romainville: www.denisromainville.com
Photographer: Severin Malaud: www.severinmalaud.com
Location: Rue Fétis 56, 1040 Brussels – Belgium (do not give the exact address)
Dates: 2018 – 2019

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