The CA–ORD project ensures the long-term preservation and FAIR accessibility of selected digital archives held at the Archives de la construction moderne (Acm) at EPFL. Over 4 TB of digital materials were at risk of loss due to obsolete media and lack of management. The project implemented Archivematica, an OAIS-compliant open-source digital preservation system, enabling automated ingest, normalization, and metadata generation. Approximately 1 TB of representative data (over 300,000 files) was processed and dissemination through Morphé (AtoM), which makes metadata and shareable content FAIRly accessible to researchers. The project strengthens Open Research Data practices in architecture, engineering and the digital humanities, contributing a replicable FAIR model for digital heritage.