The Exo, Dublin

At a glance

Completion Date:

Q4 2017

Construction Cost:


Development Size

16,000M² Office space & 1000M² External Roof Terrace


Grant Thornton


Shay Cleary Architects / Michael Collins Architects



Service provided:

Mechanical / Electrical


Martin McGrath / William Forsyth

The Exo is a landmark building located adjacent to the 3Areana in Dublin’s North Docklands and is the city’s tallest office building, with its 17 storeys. OCSC carried out multidisciplinary consultancy engineering services on the building, including Civil, Structural, Mechanical, Electrical, Sustainability, and Environmental Services. The building provides 16,000m2 of office space, with a 1000m2 external roof terrace at level 8

  • The EXO building has a unique structural form
  • The entire floorplate at each level is supported by full-height trusses located external to the façade line
  • Each truss is supported by three mega-columns
  • Internal spans measuring up to 20M in length
  • Entire building cantilevers at each end by upto 21M in length
  • The bespoke hydraulic jacking system was developed in conjunction with the steel fabricator
  • Unpredicted deflection of 2mm measured at the cantilever tip


IStructE 2022 – Large Structures Category Winner

Irish Building & Design Awards 2023 – Engineering Project of the Year

ACEI Awards 2023 – Innovation Category Large Project

ACEI Awards 2023 – M&E Category Large Project

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Martin McGrath

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