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Completed Canopy

Aerial Visual

Closeup on Node Connection

Complete Canopy during final lift

Completed Canopy

Adamstown Railway Station Canopy, Dublin, Ireland

Situated over the new railway station, the fabric covered spaceframe canopy installed by MERO (UK) PLC will soon become the central landmark to the new town of Adamstown, that is springing up 16km to the West of Dublin.

From an initial design by Iarnrod Eireann, MERO have engineered a spaceframe structure that spans 50m by 30m, and seems to float above the station’s concourse and the railway lines below, due to it being supported in just four seperate locations on the building. Covered in a lightweight tensioned membrane of PTFE, the canopy provides shelter from the Irish weather whilst allowing light to filter through to the concourse below.

Weighing in at just 37 tonnes, and with a curving aerofoil profile through the canopy, the main design concern was that the canopy would literally take off under high winds, where the uplift was calculated at over three times the canopy’s weight. Through MERO’s advanced modelling techniques, the structure and supports were designed to comfortably withstand these extreme forces whilst retaining the canopy’s lightweight appearance.

Above the MERO spaceframe, 70x70 SHS purlins run parallel to the railway line and are bolted back to each top spaceframe node to provide the support for the fabric membrane. The PTFE membrane, in just 8 huge segments, is fixed into aluminium tracks ontop of the purlins, and tensioned through a perimeter tensioning arrangement to provide the cladding to the canopy. When used in conjuction with the integrated fall arrest system, the membrane can be safely walked over for maintenance.

Due to the need to keep the main Dublin to Cork railway lines open during construction, the entire canopy was constructed on the ground adjacent to the station, and then lifted into position overnight in a four hour railway closure lifting window. Using a 500 tonne crane, MERO successfully executed one of the first lifts of it’s kind in Ireland, providing a spectacular climax to this innovative project.

[Download this project as a PDF document] 

_ _
Project Title:
Adamstown Railway Station Canopy
Adamstown, Lucan, Dublin
_ Scope of Works: Spaceframe Canopy including cladding, mansafe access system and rainwater management
_ Cladding Details:

0.9 tonnes 1125sqm PTFE tensioned fabric membrane in 8 segments, clamped to canopy via 0.8 tonnes aluminium tracks.

_ Steelwork Details: 24 tonnes MERO spaceframe galvanised and painted RAL9010
10.3 tonnes 100x150 RHS perimeter members, 70x70 SHS purlin members, 10mm thick steel plate brackets, all galvanised and painted RAL9010
0.9 tonnes 3mm thick aluminium gutters
2.5 tonnes temporary support steelwork to support canopy during construction on the ground
_ Year of Completion: 2006
_ Contract Duration: 5 months
_ Client: Iarnrod Eireann
_ Architect: Building Design Partnership (Ireland) Ltd.
_ Main Contractor: Laing O'Rourke Ireland Ltd.
_ Related External Articles:
(NB: MERO-SCHMIDLIN is not responsible for the availability or content of external websites)
Building Specifier 6/10/2006 'Raising the roof in Adamstown' Interview with Architect BDP and MERO

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