Rehabilitation of a Rammed Earth building

Saint-André Le Gaz, France, 2021

Studies and work carried out as part of the DSA-Earth Architecture 2020-2022, CRAterre - ENSAG

The Isère Rhône-Alpes region in France boasts the largest concentration of traditional rammed earth houses. This rammed earth heritage now faces multiple challenges: changing lifestyles, loss of knowledge and know-how related to maintenance, restoration, and construction in rammed earth, regulatory constraints, laborious implementation, the rise and competition of industrial construction materials, mixing of populations, and loss of local memories, etc. In the absence of knowledge, desire, or ability to preserve it, a part of this heritage is thus disappearing from the landscapes and memories.

This building serves as a prime example of the traditional rammed earth constructions prevalent in Saint-André Le Gaz, located in North Isère. However, akin to many of its counterparts, this building has endured inadequate rehabilitation efforts and a lack of ongoing maintenance.

Over the course of a two-week on-site intervention, our approach was comprehensive. Initially, we conducted an exhaustive study encompassing the historical, geographical, geological, and sociological context of both the locality and the edifice. Subsequently, a meticulous diagnostic assessment was undertaken, meticulously delineating all pathologies present, their origins, and prescribing precise treatment methodologies for each identified issue. This methodological rigor underscores our commitment to ensuring the effective preservation and restoration of cultural heritage assets.

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