The Terminal 1 T1X Project at Dublin Airport was procured under a Design & Build competition. The Client, Dublin Airport Authority (DAA) prepared an outline design for additional retail and office space within the airport as a means of linking the existing terminal to Piers A & D (100 & 300 gates). From the outline design O’Connor Sutton Cronin, in conjunction with Murray O’Laoire Architects and Michael McNamara & Company prepared the winning design.
The outline design issued by the DAA had used a 20m x 20m structural grid utilising a 1200mm structural zone. Through comparison of a number of structural solutions, O’Connor Sutton Cronin proposed an alternative compliant design with a revised grid of 20m x 10m with a steel truss and composite metal deck solution. This alternative design resulted in significant savings in steel weights and was a major factor in the successful bid.
The development consists of retail and office facilities over a 2 storey with part 3-storey extension to the north of the existing building within Terminal 1. The steel frame and composite metal deck was constructed at 1st, 2nd and roof level whilst normal airport operations such as the movement of baggage vehicles to and from the baggage hall progressed unhindered on the apron slab below. The project also required significant structural alterations to the existing building without affecting the daily operations of the airport facility.
The construction works were completed under the design and build process within budget and 5 weeks ahead of programme.