The Treasury Building, Lower Grand Canal Street, Dublin 2 with structural design by CORA Consulting Engineers is a major refurbishment and extension of a protected 1946 industrial building, delivering nine storeys of Grade A office accommodation. The project involved the addition of two new floors, mezzanines, rooftop and basement plantrooms, and a significant atrium extension, all carefully integrated within the existing riveted steel frame structure.

The careful dismantling, testing, recertification and re-use of 85 tonnes of original structural steel broke new ground in Ireland, maintaining continuity with the building’s historic fabric while dramatically reducing embodied carbon.

Strengthening and extending the existing structure within tight spatial constraints required detailed finite element modelling, innovative foundation design and close collaboration between contractor, fabricator and design team. The resulting building combines heritage retention with exemplary low-carbon structural innovation.