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National Children's Hospital, Dublin

2 minute read
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April 18, 2023

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Aerial view of a large, oval-shaped stadium under construction, with the steel framework of the roof clearly visible.

"Incredible work in a fantastic and necessary facility. Aesthetically pleasing and structurally sound! A well-designed structure delivered through BIM. The complexity of the structure and the interaction of services was simplified by the BIM software which was very well coordinated indeed. Amazing structural design and recognition for the work at the HSE, and especially after COVID! There is an incredible amount of detail involved, this was compounded by the requirement for Execution Class 4." - Audience comments

Winner of the public choice

About the project

Project category

Public

Project participants

Struccie Design Associates, KH Engineering, BAM Ireland

Location

Leinster, Dublin

Images

View of the phase nearing completion

Aerial view of a large, curved building under construction, with exposed metal framework for the roof and visible construction activity.

Construction of the Great Biome through the center of the oval

An aerial view of a large, oval-shaped stadium under construction, featuring exposed steel framework for the roof and a facade of vertical panels.

Aerial view showing the oval shape

Aerial view of the St. James's Hospital structure under construction in Dublin, with multiple green cranes surrounding the oval-shaped building.

Project in numbers

The BIM model contains

26072 screws

Paper drawings used

3881 assembly drawings

Used Trimble products

Tekla Structures, Tekla Model Sharing, Trimble Connect

A world-class medical facility

The National Children's Hospital will provide world-class medical facilities for children and young people throughout Ireland who have complicated and serious illnesses

We were asked by metal structure manufacturer KH Engineering to carry out the steel detailing for the roof package at the NCH. The oval shape alludes to the architecture of Dublin's best-known civic spaces and buildings, most notably the Georgian squares, as well as Kilmainham Royal Hospital (Ireland's oldest hospital). Once completed, the new hospital will overlook Kilmainham and Phoenix Park. The NCH is the largest, most complex and significant capital investment project in Ireland, consisting of seven floors, 6150 rooms and 1000 parking spaces.

Drastically reduce man-hours

There were many challenging sides to this project, the beams were curved with the transverse purlins extending over the curved beams, creating a faceted structure. We also have steel-to-concrete connections and, due to the geometry, the connections were challenging. We imported the site survey data to allow us to define the concrete cores - which were also inclined, making the connections even more challenging. The entire steel structure was galvanized, which meant that weep holes (along with lifting points) were introduced in all the beams and columns, we were able to use components for this workflow, drastically reducing working hours. We also had six chimneys to accommodate.

Using Trimble Connect, we were able to import all the other design team models, giving us an accurate multidisciplinary model to work from. We were able to invite everyone we felt would benefit from using Trimble Connect and highlight interferences and suggest changes to the project by tagging the design team members using the "To Do" action tool. In this way, we could keep a live diary of what actions were needed and what actions had been taken. Using Trimble Connect meant that we had access to the latest design team templates, offering an excellent coordination tool. The curved beams were cut in Holland and transported during Covid. We exported to Strumis when issuing manufacturing packages to our client.

Important points or benefits:

  • User-defined attribute fields were used to highlight the zones that were worked on at the construction site.

  • The project was Execution Class 4

  • Parts: 25806

  • Screws: 26072

  • Assemblies: 13069

  • Assembly drawings: 3881

  • One-piece designs: 6017

  • Total tons: 576

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