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Monitoring over two years to make decisions: structural monitoring under real conditions

Case study
10 November 2025 by
GS Conseils, Support GS


In Accous, in the Pyrénées-Atlantiques, the Saint-Martin church is undergoing an ambitious restoration project. Classified, ancient and precious, the building is also fragile. To secure the work, the BGEA STRUCTURES SUD-OUEST study office called upon a connected solution: our sensors allowed for continuous monitoring of the state of the vaults and the central nave throughout the interventions.

The context: an ancient building, sensitive work


The project, led by the SARL ARREBAT and managed by Patrick Etchevers, aimed to reinforce the vaults and repair the cracked masonry of the Saint-Martin church. A complex scaffolding was set up to reach the most vulnerable areas, while minimising risks to the building.

But monitoring cracks in a structure of this nature is no small task. Access is limited, and the margins for manoeuvre are small. This is where our sensors come in.


The installed solution


  • 2 DELTA L+ to measure the opening of cracks
  • 2 DELTA R to monitor inclinations
  • 1 DELTA L+ mini to track movements in a more localized area

Thanks to our mobile application, the data is accessible remotely, alerts can be configured in just a few clicks, and PDF reports are generated automatically to accompany the stages of the site.


Objective: leave nothing to chance


By equipping the vaults and the nave, the project team has implemented a continuous monitoring system. Result: a better anticipation of risks, fewer site visits, and a faster decision-making in case of changes.


💡

Bilan

La solution a convaincu par sa facilité d’installation et sa précision. Sur ce type de patrimoine, chaque mouvement compte : nos capteurs ont apporté la tranquillité d’esprit nécessaire pour intervenir sereinement.



Press contact

Agence Impulse Communication Paris

Marie Legrand – marie@impulse-communication.fr – 06 09 88 62 27

Julie Dalsace – julie@impulse-communication.fr – 06 78 70 96 05



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